1 Maathuis F J M. Physiological functions of mineral macronutrients. Curr Opin Plant Biol, 2009, 12: 250-258
[2]
2 Maathuis F J, Diatloff E. Roles and functions of plant mineral nutrients. Methods Mol Biol, 2013, 953: 1-21
[3]
3 Guo J H, Liu X J, Zhang Y, et al. Significant acidification in major Chinese croplands. Science, 2010, 327: 1008-1010
[4]
4 Zhang Q. Strategies for developing Green Super Rice. Proc Natl Acad Sci USA, 2007, 104: 16402-16409
[5]
5 Xu G, Fan X, Miller A J. Plant nitrogen assimilation and use efficiency. Annu Rev Plant Biol, 2012, 63: 153-182
[6]
6 Arth I, Frenzel P, Conrad R. Denitrification coupled to nitrification in the rhizosphere of rice. Soil Biol Biochem, 1998, 30: 509-515
[7]
7 Wang M Y, Siddiqi M Y, Ruth T J, et al. Ammonium uptake by rice roots: I. Fluxes and subcellular distribution of 13NH4+. Plant Physiol, 1993, 103: 1249-1258
[8]
8 Kronzucker H J, Kirk G J D, Siddiqi M Y, et al. Effects of hypoxia on 13NH4+ fluxes in rice roots: kinetics and compartmental analysis. Plant Physiol, 1998, 116: 581-587
[9]
9 Kronzucker H J, Siddiqi M Y, Glass A D M, et al. Nitrate-ammonium synergism in rice: a subcellular flux analysis. Plant Physiol, 1999, 119: 1041-1045
[10]
10 Kirk G J, Kronzucker H J. The potential for nitrification and nitrate uptake in the rhizosphere of wetland plants: a modelling study. Ann Bot, 2005, 96: 639-646
[11]
11 Li Y L, Fan X R, Shen Q R. The relationship between rhizosphere nitrification and nitrogen-use efficiency in rice plants. Plant Cell Environ, 2008, 31: 73-85
[12]
12 Ta T C, Tsutsumi M, Kurihara K. Comparative study on the response of Indica and Japonica rice plants to ammonium and nitrate nitrogen. Soil Sci Plant Nutr, 1981, 27: 83-92
[13]
13 Ta T C, Ohira K. Effects of various environmental and medium conditions on the response of Indica and Japonica rice plants to ammonium and nitrate nitrogen. Soil Sci Plant Nutr, 1981, 27: 347-355
[14]
78 Konishi M, Yanagisawa S. Arabidopsis NIN-like transcription factors have a central role in nitrate signalling. Nat Commun, 2013, 4: 1617
[15]
79 Huang X Z, Qian Q, Liu Z B, et al. Natural variation at the DEP1 locus enhances grain yield in rice. Nat Genet, 2009, 41: 494-497
[16]
80 Sun H Y, Qian Q, Wu K, et al. Heterotrimeric G proteins regulate nitrogen-use efficiency in rice. Nat Genet, 2014, 46: 652-656
[17]
81 Liang C Z, Wang Y Q, Zhu Y N, et al. OsNAP connects abscisic acid and leaf senescence by fine-tuning abscisic acid biosynthesis and directly targeting senescence-associated genes in rice. Proc Natl Acad Sci USA, 2014, 111: 10013-10018
[18]
82 Raghothama K G. Phosphate acquisition. Annu Rev Plant Physiol Plant Mol Biol, 1999, 50: 665-693
[19]
83 Secco D, Jabnoune M, Walker H, et al. Spatio-temporal transcript profiling of rice roots and shoots in response to phosphate starvation and recovery. Plant Cell, 2013, 25: 4285-4304
[20]
84 Franco-Zorrilla J M, Gonzalez E, Bustos R, et al. The transcriptional control of plant responses to phosphate limitation. J Exp Bot, 2004, 55: 285-293
[21]
85 Hu B, Chu C. Phosphate starvation signaling in rice. Plant Signal Behav, 2011, 6: 927-929
[22]
86 Bari R. PHO2, MicroRNA399, and PHR1 define a phosphate-signaling pathway in plants. Plant Physiol, 2006, 141: 988-999
[23]
87 Schachtman D P, Shin R. Nutrient sensing and signaling: NPKS. Annu Rev Plant Biol, 2007, 58: 47-69
[24]
88 Rubio V. A conserved MYB transcription factor involved in phosphate starvation signaling both in vascular plants and in unicellular algae. Genes Dev, 2001, 15: 2122-2133
[25]
89 Nilsson L, Müller R, Nielsen T H. Increased expression of the MYB-related transcription factor, PHR1, leads to enhanced phosphate uptake in Arabidopsis thaliana. Plant Cell Environ, 2007, 30: 1499-1512
[26]
90 Miura K, Rus A, Sharkhuu A, et al. The Arabidopsis SUMO E3 ligase SIZ1 controls phosphate deficiency responses. Proc Natl Acad Sci USA, 2005, 102: 7760-7765
[27]
91 Fujii H, Chiou T J, Lin S I, et al. A miRNA involved in phosphate-starvation response in Arabidopsis. Curr Biol, 2005, 15: 2038-2043
[28]
92 Chiou T J. Regulation of phosphate homeostasis by MicroRNA in Arabidopsis. Plant Cell, 2006, 18: 412-421
[29]
93 Liu T Y, Huang T K, Tseng C Y, et al. PHO2-dependent degradation of PHO1 modulates phosphate homeostasis in Arabidopsis. Plant Cell, 2012, 24: 2168-2183
[30]
94 Huang T K, Han C L, Lin S I, et al. Identification of downstream components of ubiquitin-conjugating enzyme PHOSPHATE2 by quantitative membrane proteomics in Arabidopsis roots. Plant Cell, 2013, 25: 4044-4060
[31]
95 Lin W Y, Huang T K, Chiou T J. NITROGEN LIMITATION ADAPTATION, a target of MicroRNA827, mediates degradation of plasma membrane-localized phosphate transporters to maintain phosphate homeostasis in Arabidopsis. Plant Cell, 2013, 25: 4061-4074
[32]
100 Chen Y F, Li L Q, Xu Q, et al. The WRKY6 transcription factor modulates PHOSPHATE1 expression in response to low Pi stress in Arabidopsis. Plant Cell, 2009, 21: 3554-3566
[33]
101 Devaiah B N, Karthikeyan A S, Raghothama K G. WRKY75 transcription factor is a modulator of phosphate acquisition and root development in Arabidopsis. Plant Physiol, 2007, 143: 1789-1801
[34]
102 Zhou J, Jiao F, Wu Z, et al. OsPHR2 is involved in phosphate-starvation signaling and excessive phosphate accumulation in shoots of plants. Plant Physiol, 2008, 146: 1673-1686
[35]
103 Liu F, Wang Z, Ren H, et al. OsSPX1 suppresses the function of OsPHR2 in the regulation of expression of OsPT2 and phosphate homeostasis in shoots of rice. Plant J, 2010, 62: 508-517
[36]
104 Wang C, Ying S, Huang H, et al. Involvement of OsSPX1 in phosphate homeostasis in rice. Plant J, 2009, 57: 895-904
[37]
105 Wang Z, Ruan W, Shi J, et al. Rice SPX1 and SPX2 inhibit phosphate starvation responses through interacting with PHR2 in a phosphate-dependent manner. Proc Natl Acad Sci USA, 2014, 111: 14953-14958
[38]
117 Misson J, Thibaud M C, Bechtold N, et al. Transcriptional regulation and functional properties of Arabidopsis Pht1;4, a high affinity transporter contributing greatly to phosphate uptake in phosphate deprived plants. Plant Mol Biol, 2004, 55: 727-741
[39]
118 Jia H, Ren H, Gu M, et al. The phosphate transporter gene OsPht1;8 is involved in phosphate homeostasis in rice. Plant Physiol, 2011, 156: 1164-1175
[40]
119 Bayle V, Arrighi J F, Creff A, et al. Arabidopsis thaliana high-affinity phosphate transporters exhibit multiple levels of posttranslational regulation. Plant Cell, 2011, 23: 1523-1535
[41]
120 Chen J, Liu Y, Ni J, et al. OsPHF1 regulates the plasma membrane localization of low- and high-affinity inorganic phosphate transporters and determines inorganic phosphate uptake and translocation in rice. Plant Physiol, 2011, 157: 269-278
[42]
121 Gonzalez E. PHOSPHATE TRANSPORTER TRAFFIC FACILITATOR1 is a plant-specific SEC12-related protein that enables the endoplasmic reticulum exit of a high-affinity phosphate transporter in Arabidopsis. Plant Cell, 2005, 17: 3500-3512
[43]
122 Leigh R A, Jones R G W. A hypothesis relating critical potassium concentrations for growth to the distribution and functions of this ion in the plant cell. New Phytol, 1984, 97: 1-13
[44]
123 Walker D J, Leigh R A, Miller A J. Potassium homeostasis in vacuolate plant cells. Proc Natl Acad Sci USA, 1996, 93: 10510-10514
[45]
124 Gierth M, M？ser P. Potassium transporters in plants-involvement in K+ acquisition, redistribution and homeostasis. FEBS Lett, 2007, 581: 2348-2356
[46]
125 Fu H H, Luan S. AtKUP1: a dual-affinity K+ transporter from Arabidopsis. Plant Cell, 1998, 10: 63-73
[47]
126 Kim E J, Kwak J M, Uozumi N, et al. AtKUP1: an Arabidopsis gene encoding high-affinity potassium transport activity. Plant Cell, 1998, 10: 639-639
[48]
127 Elumalai R P, Nagpal P, Reed J W. A mutation in the Arabidopsis KT2/KUP2 potassium transporter gene affects shoot cell expansion. Plant Cell, 2002, 14: 119-131
[49]
128 Rigas S, Debrosses G, Haralampidis K, et al. TRH1 encodes a potassium transporter required for tip growth in Arabidopsis root hairs. Plant Cell, 2001, 13: 139-151
[50]
129 Gierth M. The potassium transporter AtHAK5 functions in K+ deprivation-induced high-affinity K+ uptake and AKT1 K+ channel contribution to K+ uptake kinetics in Arabidopsis roots. Plant Physiol, 2005, 137: 1105-1114
[51]
130 Santa-Maria G E, Rubio F, Dubcovsky J, et al. The HAK1 gene of barley is a member of a large gene family and encodes a high-affinity potassium transporter. Plant Cell, 1997, 9: 2281-2289
[52]
131 Banuelos M A. Inventory and functional characterization of the HAK potassium transporters of rice. Plant Physiol, 2002, 130: 784-795
[53]
132 Barragan V, Leidi E O, Andres Z, et al. Ion exchangers NHX1 and NHX2 mediate active potassium uptake into vacuoles to regulate cell turgor and stomatal function in Arabidopsis. Plant Cell, 2012, 24: 1127-1142
[54]
133 Bassil E, Tajima H, Liang Y C, et al. The Arabidopsis Na+/H+ antiporters NHX1 and NHX2 control vacuolar pH and K+ homeostasis to regulate growth, flower development, and reproduction. Plant Cell, 2011, 23: 3482-3497
[55]
134 Cellier F, Conéjéro G, Ricaud L, et al. Characterization of AtCHX17, a member of the cation/H+ exchangers, CHX family, from Arabidopsis thaliana suggests a role in K+ homeostasis. Plant J, 2004, 39: 834-846
[56]
135 Padmanaban S, Chanroj S, Kwak J M, et al. Participation of endomembrane cation/H+ exchanger AtCHX20 in osmoregulation of guard cells. Plant Physiol, 2007, 144: 82-93
[57]
136 Song C P, Guo Y, Qiu Q, et al. A probable Na+(K+)/H+ exchanger on the chloroplast envelope functions in pH homeostasis and chloroplast development in Arabidopsis thaliana. Proc Natl Acad Sci USA, 2004, 101: 10211-10216
[58]
148 Lee S C, Lan W Z, Kim B G, et al. A protein phosphorylation/dephosphorylation network regulates a plant potassium channel. Proc Natl Acad Sci USA, 2007, 104: 15959-15964
[59]
149 Wang Y, He L, Li H D, et al. Potassium channel α-subunit AtKC1 negatively regulates AKT1-mediated K+ uptake in Arabidopsis roots under low-K+ stress. Cell Res, 2010, 20: 826-837
[60]
150 Ren X L, Qi G N, Feng H Q, et al. Calcineurin B-like protein CBL10 directly interacts with AKT1 and modulates K+ homeostasis in Arabidopsis. Plant J, 2013, 74: 258-266
[61]
151 Zhao L N, Shen L K, Zhang W Z, et al. Ca2+-dependent protein kinase 11 and 24 modulate the activity of the inward rectifying K+ channels in Arabidopsis pollen tubes. Plant Cell, 2013, 25: 649-661
[62]
152 Sors T G, Ellis D R, Salt D E. Selenium uptake, translocation, assimilation and metabolic fate in plants. Photosynth Res, 2005, 86: 373-389
[63]
153 Curie C, Briat J F. Iron transport and signaling in plants. Annu Rev Plant Biol, 2003, 54: 183-206
[64]
199 Waters B M, Grusak M A. Whole-plant mineral partitioning throughout the life cycle in Arabidopsis thaliana ecotypes Columbia, Landsberg erecta, Cape Verde Islands, and the mutant line ysl1ysl3. New Phytol, 2008, 177: 389-405
[65]
200 Stomph T J, Jiang W, Van Der Putten P E, et al. Zinc allocation and re-allocation in rice. Front Plant Sci, 2014, 5: 8
[66]
201 Ozturk L, Yazici M A, Yucel C, et al. Concentration and localization of zinc during seed development and germination in wheat. Physiol Plant, 2006, 128: 144-152
[67]
202 Zayed A, Lytle C M, Terry N. Accumulation and volatilization of different chemical species of selenium by plants. Planta, 1998, 206: 284-292
[68]
203 Van Huysen T, Abdel-Ghany S, Hale K L, et al. Overexpression of cystathionine-gamma-synthase enhances selenium volatilization in Brassica juncea. Planta, 2003, 218: 71-78
[69]
204 LeDuc D L. Overexpression of selenocysteine methyltransferase in Arabidopsis and indian mustard increases selenium tolerance and accumulation. Plant Physiol, 2004, 135: 377-383
[70]
205 Ellis D R, Sors T G, Brunk D G, et al. Production of Se-methylselenocysteine in transgenic plants expressing selenocysteine methyltransferase. BMC Plant Biol, 2004, 4: 1-11
[71]
206 Peng J S, Gong J M. Vacuolar sequestration capacity and long-distance metal transport in plants. Front Plant Sci, 2014, 5: 19
[72]
207 Ren Z H, Gao J P, Li L G, et al. A rice quantitative trait locus for salt tolerance encodes a sodium transporter. Nat Genet, 2005, 37: 1141-1146
[73]
208 Horie T, Costa A, Kim T H, et al. Rice OsHKT2;1 transporter mediates large Na+ influx component into K+-starved roots for growth. EMBO J, 2007, 26: 3003-3014
[74]
209 Horie T, Brodsky D E, Costa A, et al. K+ Transport by the OsHKT2;4 transporter from rice with atypical Na+ transport properties and competition in permeation of K+ over Mg2+ and Ca2+ ions. Plant Physiol, 2011, 156: 1493-1507
[75]
210 Lee S, Chiecko J C, Kim S A, et al. Disruption of OsYSL15 leads to iron inefficiency in rice plants. Plant Physiol, 2009, 150: 786-800
[76]
211 Inoue H, Kobayashi T, Nozoye T, et al. Rice OsYSL15 is an iron-regulated iron(Ⅲ)-deoxymugineic acid transporter expressed in the roots and is essential for iron uptake in early growth of the seedlings. J Biol Chem, 2009, 284: 3470-3479
[77]
212 Aoyama T, Kobayashi T, Takahashi M, et al. OsYSL18 is a rice iron(Ⅲ)-deoxymugineic acid transporter specifically expressed in reproductive organs and phloem of lamina joints. Plant Mol Biol, 2009, 70: 681-692
[78]
213 Ishimaru Y, Suzuki M, Kobayashi T, et al. OsZIP4, a novel zinc-regulated zinc transporter in rice. J Exp Bot, 2005, 56: 3207-3214
[79]
214 Zhang Y, Xu Y H, Yi H Y, et al. Vacuolar membrane transporters OsVIT1 and OsVIT2 modulate iron translocation between flag leaves and seeds in rice. Plant J, 2012, 72: 400-410
[80]
215 Yamaji N, Xia J, Mitani-Ueno N, et al. Preferential delivery of zinc to developing tissues in rice is mediated by P-type heavy metal ATPase OsHMA2. Plant Physiol, 2013, 162: 927-939
[81]
216 Takahashi R, Ishimaru Y, Shimo H, et al. The OsHMA2 transporter is involved in root-to-shoot translocation of Zn and Cd in rice. Plant Cell Environ, 2012, 35: 1948-1957
[82]
217 Satoh-Nagasawa N, Mori M, Nakazawa N, et al. Mutations in rice (Oryza sativa) heavy metal ATPase 2 (OsHMA2) restrict the translocation of zinc and cadmium. Plant Cell Physiol, 2012, 53: 213-224
[83]
218 Sasaki A, Yamaji N, Ma J F. Overexpression of OsHMA3 enhances Cd tolerance and expression of Zn transporter genes in rice. J Exp Bot, 2014, 65: 6013-6021
[84]
219 Miyadate H, Adachi S, Hiraizumi A, et al. OsHMA3, a P1B-type of ATPase affects root-to-shoot cadmium translocation in rice by mediating efflux into vacuoles. New Phytol, 2011, 189: 190-199
[85]
197 Vitart V, Baxter I, Doerner P, et al. Evidence for a role in growth and salt resistance of a plasma membrane H+-ATPase in the root endodermis. Plant J, 2001, 27: 191-201
[86]
198 Hussain D, Haydon M J, Wang Y, et al. P-type ATPase heavy metal transporters with roles in essential zinc homeostasis in Arabidopsis. Plant Cell, 2004, 16: 1327-1339
[87]
220 Lee S, Kim Y Y, Lee Y, et al. Rice P1B-type heavy-metal ATPase, OsHMA9, is a metal efflux protein. Plant Physiol, 2007, 145: 831-842
[88]
221 Feng Y, Cao L, Wu W, et al. Mapping QTLs for nitrogen-deficiency tolerance at seedling stage in rice (Oryza sativa L.). Plant Breed, 2010, 129: 652-656
[89]
222 Hu S K, Zeng D L, Su Y, et al. QTL analysis of nitrogen content of plant shoot under two nitrogen conditions in rice (Oryza sativa L.). Aust J Crop Sci, 2012, 6: 1734-1744
[90]
223 Lian X M, Xing Y Z, Yan H, et al. QTLs for low nitrogen tolerance at seedling stage identified using a recombinant inbred line population derived from an elite rice hybrid. Theor Appl Genet, 2005, 112: 85-96
[91]
224 Teng S, Tian C, Chen M, et al. QTLs and candidate genes for chlorate resistance in rice (Oryza sativa L.). Euphytica, 2006, 152: 141-148
[92]
225 Wei D, Cui K H, Ye G Y, et al. QTL mapping for nitrogen-use efficiency and nitrogen-deficiency tolerance traits in rice. Plant Soil, 2012, 359: 281-295
[93]
226 Zhao C F, Zhou L H, Zhang Y D, et al. QTL mapping for seedling traits associated with low-nitrogen tolerance using a set of advanced backcross introgression lines of rice. Plant Breed, 2013, 133: 189-195
[94]
227 Wissuwa M, Yano M, Ae N. Mapping of QTLs for phosphorus-deficiency tolerance in rice (Oryza sativa L.). Theor Appl Genet, 1998, 97: 777-783
[95]
228 Shimizu A, Kato K, Komatsu A, et al. Genetic analysis of root elongation induced by phosphorus deficiency in rice (Oryza sativa L.): fine QTL mapping and multivariate analysis of related traits. Theor Appl Genet, 2008, 117: 987-996
[96]
229 Li J, Xie Y, Dai A, et al. Root and shoot traits responses to phosphorus deficiency and QTL analysis at seedling stage using introgression lines of rice. J Genet Genomics, 2009, 36: 173-183
[97]
230 Heuer S, Lu X, Chin J H, et al. Comparative sequence analyses of the major quantitative trait locus phosphorus uptake 1 (Pup1) reveal a complex genetic structure. Plant Biotechnol J, 2009, 7: 456-471
[98]
231 Gao J P, Lin H X. QTL analysis and map-based cloning of salt tolerance gene in rice. Methods Mol Biol, 2013, 956: 69-82
[99]
232 Wang Z, Chen Z, Cheng J, et al. QTL analysis of Na+ and K+ concentrations in roots and shoots under different levels of NaCl stress in rice (Oryza sativa L.). PLoS One, 2012, 7: e51202
[100]
233 Wu P, Ni J, Luo A. QTLs underlying rice tolerance to low-potassium stress in rice seedlings. Crop Sci, 1998, 38: 1458-1462
[101]
234 Huang R, Jiang L, Zheng J, et al. Genetic bases of rice grain shape: so many genes, so little known. Trends Plant Sci, 2013, 18: 218-226
[102]
235 Huang X, Kurata N, Wei X, et al. A map of rice genome variation reveals the origin of cultivated rice. Nature, 2012, 490: 497-501
[103]
236 Huang X, Zhao Y, Wei X, et al. Genome-wide association study of flowering time and grain yield traits in a worldwide collection of rice germplasm. Nat Genet, 2012, 44: 32-39
[104]
237 Huang X, Wei X, Sang T, et al. Genome-wide association studies of 14 agronomic traits in rice landraces. Nat Genet, 2010, 42: 961-967
[105]
238 Haefele S M, Nelson A, Hijmans R J. Soil quality and constraints in global rice production. Geoderma, 2014, 235: 250-2592015-6-15
[106]
14 Sohlenkamp C, Wood C C, Roeb G W, et al. Characterization of Arabidopsis AtAMT2, a high-affinity ammonium transporter of the plasma membrane. Plant Physiol, 2002, 130: 1788-1796
[107]
15 Sohlenkamp C, Shelden M, Howitt S, et al. Characterization of Arabidopsis AtAMT2, a novel ammonium transporter in plants. FEBS Lett, 2000, 467: 273-278
[108]
16 Loque D, Yuan L, Kojima S, et al. Additive contribution of AMT1;1 and AMT1;3 to high-affinity ammonium uptake across the plasma membrane of nitrogen-deficient Arabidopsis roots. Plant J, 2006, 48: 522-534
[109]
17 Yuan L, Loque D, Kojima S, et al. The organization of high-affinity ammonium uptake in Arabidopsis roots depends on the spatial arrangement and biochemical properties of AMT1-type transporters. Plant Cell, 2007, 19: 2636-2652
[110]
18 Yuan L, Graff L, Loque D, et al. AtAMT1;4, a pollen-specific high-affinity ammonium transporter of the plasma membrane in Arabidopsis. Plant Cell Physiol, 2009, 50: 13-25
[111]
19 Suenaga A, Moriya K, Sonoda Y, et al. Constitutive expression of a novel-type ammonium transporter OsAMT2 in rice plants. Plant Cell Physiol, 2003, 44: 206-211
[112]
20 Bu Y Y, Takano T, Nemoto K, et al. Research progress of ammonium transporter in rice plants. Genomics Appl Biol, 2009, 28: 19-23
[113]
21 Sonoda Y, Ikeda A, Saiki S, et al. Distinct expression and function of three ammonium transporter genes (OsAMT1;1-1;3) in rice. Plant Cell Physiol, 2003, 44: 726-734
[114]
22 Xuan Y H, Priatama R A, Huang J, et al. Indeterminate domain 10 regulates ammonium-mediated gene expression in rice roots. New Phytol, 2013, 197: 791-804
[115]
23 Hoque M S, Masle J, Udvardi M K, et al. Over-expression of the rice OsAMT1-1 gene increases ammonium uptake and content, but impairs growth and development of plants under high ammonium nutrition. Funct Plant Biol, 2006, 33: 153-163
[116]
24 Ranathunge K, El-Kereamy A, Gidda S, et al. OsAMT1;1 transgenic rice plants with enhanced NH4+ permeability show superior growth and higher yield under optimal and suboptimal NH4+ conditions. J Exp Bot, 2014, 65: 965-979
[117]
25 Sonoda Y, Ikeda A, Yamaya T, et al. Feedback regulation of the ammonium transporter gene family AMT1 by glutamine in rice. Plant Cell Physiol, 2003, 44: 1396-1402
[118]
26 Gaur V S, Singh U S, Gupta A K, et al. Influence of different nitrogen inputs on the members of ammonium transporter and glutamine synthetase genes in two rice genotypes having differential responsiveness to nitrogen. Mol Biol Rep, 2012, 39: 8035-8044
[119]
27 Gaur V S, Singh U S, Gupta A K, et al. Understanding the differential nitrogen sensing mechanism in rice genotypes through expression analysis of high and low affinity ammonium transporter genes. Mol Biol Rep, 2012, 39: 2233-2241
[120]
28 Li S M, Li B Z, Shi W M. Expression patterns of nine ammonium transporters in rice in response to N status. Pedosphere, 2012, 22: 860-869
[121]
29 Ding Z, Wang C, Chen S, et al. Diversity and selective sweep in the OsAMT1;1 genomic region of rice. BMC Evol Biol, 2011, 11: 61
[122]
30 Leran S, Varala K, Boyer J C, et al. A unified nomenclature of NITRATE TRANSPORTER 1/PEPTIDE TRANSPORTER family members in plants. Trends Plant Sci, 2014, 19: 5-9
[123]
31 Tsay Y F, Schroeder J I, Feldmann K A, et al. The herbicide sensitivity gene CHL1 of Arabidopsis encodes a nitrate-inducible nitrate transporter. Cell, 1993, 72: 705-713
[124]
32 Liu K H, Huang C Y, Tsay Y F. CHL1 is a dual-affinity nitrate transporter of Arabidopsis involved in multiple phases of nitrate uptake. Plant Cell, 1999, 11: 865-874
[125]
33 Huang N C, Liu K H, Lo H J, et al. Cloning and functional characterization of an Arabidopsis nitrate transporter gene that encodes a constitutive component of low-affinity uptake. Plant Cell, 1999, 11: 1381-1392
[126]
34 Cerezo M, Tillard P, Filleur S, et al. Major alterations of the regulation of root NO3- uptake are associated with the mutation of NRT2.1 and NRT2.2 genes in Arabidopsis. Plant Physiol, 2001, 127: 262-271
[127]
35 Little D Y, Rao H, Oliva S, et al. The putative high-affinity nitrate transporter NRT2.1 represses lateral root initiation in response to nutritional cues. Proc Natl Acad Sci USA, 2005, 102: 13693-13698
[128]
36 Li W, Wang Y, Okamoto M, et al. Dissection of the AtNRT2.1:AtNRT2.2 inducible high-affinity nitrate transporter gene cluster. Plant Physiol, 2007, 143: 425-433
[129]
37 Okamoto M, Kumar A, Li W, et al. High-affinity nitrate transport in roots of Arabidopsis depends on expression of the NAR2-like gene, AtNRT3.1. Plant Physiol, 2006, 140: 1036-1046
[130]
38 Orsel M, Chopin F, Leleu O, et al. Characterization of a two-component high-affinity nitrate uptake system in Arabidopsis. Physiology and protein-protein interaction. Plant Physiol, 2006, 142: 1304-1317
[131]
39 Lin S H, Kuo H F, Canivenc G, et al. Mutation of the Arabidopsis NRT1.5 nitrate transporter causes defective root-to-shoot nitrate transport. Plant Cell, 2008, 20: 2514-2528
[132]
40 Li J Y, Fu Y L, Pike S M, et al. The Arabidopsis nitrate transporter NRT1.8 functions in nitrate removal from the xylem sap and mediates cadmium tolerance. Plant Cell, 2010, 22: 1633-1646
[133]
41 Wang Y Y, Tsay Y F. Arabidopsis nitrate transporter NRT1.9 is important in phloem nitrate transport. Plant Cell, 2011, 23: 1945-1957
[134]
42 Chen C Z, Lv X F, Li J Y, et al. Arabidopsis NRT1.5 is another essential component in the regulation of nitrate reallocation and stress tolerance. Plant Physiol, 2012, 159: 1582-1590
[135]
43 Chiu C C, Lin C S, Hsia A P, et al. Mutation of a nitrate transporter, AtNRT1:4, results in a reduced petiole nitrate content and altered leaf development. Plant Cell Physiol, 2004, 45: 1139-1148
[136]
44 Fan S C, Lin C S, Hsu P K, et al. The Arabidopsis nitrate transporter NRT1.7, expressed in phloem, is responsible for source-to-sink remobilization of nitrate. Plant Cell, 2009, 21: 2750-2761
[137]
45 Hsu P K, Tsay Y F. Two phloem nitrate transporters, NRT1.11 and NRT1.12, are important for redistributing xylem-borne nitrate to enhance plant growth. Plant Physiol, 2013, 163: 844-856
[138]
46 Kiba T, Feria-Bourrellier A B, Lafouge F, et al. The Arabidopsis nitrate transporter NRT2.4 plays a double role in roots and shoots of nitrogen-starved plants. Plant Cell, 2012, 24: 245-258
[139]
47 Almagro A, Lin S H, Tsay Y F. Characterization of the Arabidopsis nitrate transporter NRT1.6 reveals a role of nitrate in early embryo development. Plant Cell, 2008, 20: 3289-3299
[140]
48 Chopin F, Orsel M, Dorbe M F, et al. The Arabidopsis ATNRT2.7 nitrate transporter controls nitrate content in seeds. Plant Cell, 2007, 19: 1590-1602
[141]
49 Bergsdorf E Y, Zdebik A A, Jentsch T J. Residues important for nitrate/proton coupling in plant and mammalian CLC transporters. J Biol Chem, 2009, 284: 11184-11193
[142]
50 De Angeli A, Monachello D, Ephritikhine G, et al. The nitrate/proton antiporter AtCLCa mediates nitrate accumulation in plant vacuoles. Nature, 2006, 442: 939-942
[143]
51 Geelen D, Lurin C, Bouchez D, et al. Disruption of putative anion channel gene AtCLC-a in Arabidopsis suggests a role in the regulation of nitrate content. Plant J, 2000, 21: 259-267
[144]
52 von der Fecht-Bartenbach J, Bogner M, Dynowski M, et al. CLC-b-mediated NO3-/H+ exchange across the tonoplast of Arabidopsis vacuoles. Plant Cell Physiol, 2010, 51: 960-968
[145]
53 Lin C M, Koh S, Stacey G, et al. Cloning and functional characterization of a constitutively expressed nitrate transporter gene, OsNRT1, from rice. Plant Physiol, 2000, 122: 379-388
[146]
54 Ouyang J, Cai Z, Xia K, et al. Identification and analysis of eight peptide transporter homologs in rice. Plant Sci, 2010, 179: 374-382
[147]
55 Fang Z, Xia K, Yang X, et al. Altered expression of the PTR/NRT1 homologue OsPTR9 affects nitrogen utilization efficiency, growth and grain yield in rice. Plant Biotechnol J, 2013, 11: 446-458
[148]
56 Araki R, Hasegawa H. Expression of rice (Oryza sativa L.) genes involved in high-affinity nitrate transport during the period of nitrate induction. Breed Sci, 2006, 56: 295-302
[149]
57 Cai C, Wang J Y, Zhu Y G, et al. Gene structure and expression of the high-affinity nitrate transport system in rice roots. J Integr Plant Biol, 2008, 50: 443-451
[150]
58 Feng H M, Yan M, Fan X R, et al. Spatial expression and regulation of rice high-affinity nitrate transporters by nitrogen and carbon status. J Exp Bot, 2011, 62: 2319-2332
[151]
59 Yan M, Fan X, Feng H, et al. Rice OsNAR2.1 interacts with OsNRT2.1, OsNRT2.2 and OsNRT2.3a nitrate transporters to provide uptake over high and low concentration ranges. Plant Cell Environ, 2011, 34: 1360-1372
[152]
60 Tang Z, Fan X, Li Q, et al. Knockdown of a rice stelar nitrate transporter alters long-distance translocation but not root influx. Plant Physiol, 2012, 160: 2052-2063
[153]
61 Crawford N M. Nitrate: nutrient and signal for plant growth. Plant Cell, 1995, 7: 859-868
[154]
62 Stitt M. Nitrate regulation of metabolism and growth. Curr Opin Plant Biol, 1999, 2: 178-186
[155]
63 Forde B G. Local and long-range signaling pathways regulating plant responses to nitrate. Annu Rev Plant Biol, 2002, 53: 203-224
[156]
64 Malamy J E. Intrinsic and environmental response pathways that regulate root system architecture. Plant Cell Environ, 2005, 28: 67-77
[157]
65 Ho C H, Lin S H, Hu H C, et al. CHL1 functions as a nitrate sensor in plants. Cell, 2009, 138: 1184-1194
[158]
66 Wang R, Xing X, Wang Y, et al. A genetic screen for nitrate regulatory mutants captures the nitrate transporter gene NRT1.1. Plant Physiol, 2009, 151: 472-478
[159]
67 Hu H C, Wang Y Y, Tsay Y F. AtCIPK8, a CBL-interacting protein kinase, regulates the low-affinity phase of the primary nitrate response. Plant J, 2009, 57: 264-278
[160]
68 Krouk G, Lacombe B, Bielach A, et al. Nitrate-regulated auxin transport by NRT1.1 defines a mechanism for nutrient sensing in plants. Dev Cell, 2010, 18: 927-937
[161]
69 Parker J L, Newstead S. Molecular basis of nitrate uptake by the plant nitrate transporter NRT1.1. Nature, 2014, 507: 68-72
[162]
70 Sun J, Bankston J R, Payandeh J, et al. Crystal structure of the plant dual-affinity nitrate transporter NRT1.1. Nature, 2014, 507: 73-77
[163]
71 Tsay Y F. Plant science: how to switch affinity. Nature, 2014, 507: 44-45
[164]
72 Zhang H, Forde B G. An Arabidopsis MADS box gene that controls nutrient-induced changes in root architecture. Science, 1998, 279: 407-409
[165]
73 Remans T, Nacry P, Pervent M, et al. The Arabidopsis NRT1.1 transporter participates in the signaling pathway triggering root colonization of nitrate-rich patches. Proc Natl Acad Sci USA, 2006, 103: 19206-19211
[166]
74 Gan Y, Bernreiter A, Filleur S, et al. Overexpressing the ANR1 MADS-box gene in transgenic plants provides new insights into its role in the nitrate regulation of root development. Plant Cell Physiol, 2012, 53: 1003-1016
[167]
75 Rubin G, Tohge T, Matsuda F, et al. Members of the LBD family of transcription factors repress anthocyanin synthesis and affect additional nitrogen responses in Arabidopsis. Plant Cell, 2009, 21: 3567-3584
[168]
76 Castaings L, Camargo A, Pocholle D, et al. The nodule inception-like protein 7 modulates nitrate sensing and metabolism in Arabidopsis. Plant J, 2009, 57: 426-435
[169]
77 Marchive C, Roudier F, Castaings L, et al. Nuclear retention of the transcription factor NLP7 orchestrates the early response to nitrate in plants. Nat Commun, 2013, 4: 1713
[170]
96 Park B S, Seo J S, Chua N H. NITROGEN LIMITATION ADAPTATION recruits PHOSPHATE2 to target the phosphate transporter PT2 for degradation during the regulation of Arabidopsis phosphate homeostasis. Plant Cell, 2014, 26: 454-464
[171]
97 Devaiah B N, Nagarajan V K, Raghothama K G. Phosphate homeostasis and root development in Arabidopsis are synchronized by the zinc finger transcription factor ZAT6. Plant Physiol, 2007, 145: 147-159
[172]
98 Chen Z, Nimmo G, Jenkins G, et al. BHLH32 modulates several biochemical and morphological processes that respond to Pi starvation in Arabidopsis. Biochem J, 2007, 405: 191-198
[173]
99 Devaiah B N, Madhuvanthi R, Karthikeyan A S, et al. Phosphate starvation responses and gibberellic acid biosynthesis are regulated by the MYB62 transcription factor in Arabidopsis. Mol Plant, 2009, 2: 43-58
[174]
106 Lv Q, Zhong Y, Wang Y, et al. SPX4 negatively regulates phosphate signaling and homeostasis through its interaction with PHR2 in rice. Plant Cell, 2014, 26: 1586-1597
[175]
107 Hu B, Zhu C, Li F, et al. LEAF TIP NECROSIS1 plays a pivotal role in the regulation of multiple phosphate starvation responses in rice. Plant Physiol, 2011, 156: 1101-1115
[176]
108 Hu B, Wang W, Deng K, et al. MicroRNA399 is involved in multiple nutrients starvation responses in rice. Front Plant Sci, 2015, 6: 188
[177]
109 Dai X, Wang Y, Yang A, et al. OsMYB2P-1, an R2R3 MYB transcription factor, is involved in the regulation of phosphate-starvation responses and root architecture in rice. Plant Physiol, 2012, 159: 169-183
[178]
110 Yi K, Wu Z, Zhou J, et al. OsPTF1, a novel transcription factor involved in tolerance to phosphate starvation in rice. Plant Physiol, 2005, 138: 2087-2096
[179]
111 Gamuyao R, Chin J H, Pariasca-Tanaka J, et al. The protein kinase Pstol1 from traditional rice confers tolerance of phosphorus deficiency. Nature, 2012, 488: 535-539
[180]
112 Paszkowski U, Kroken S, Roux C, et al. Rice phosphate transporters include an evolutionarily divergent gene specifically activated in arbuscular mycorrhizal symbiosis. Proc Natl Acad Sci USA, 2002, 99: 13324-13329
[181]
113 Wu P, Shou H, Xu G, et al. Improvement of phosphorus efficiency in rice on the basis of understanding phosphate signaling and homeostasis. Curr Opin Plant Biol, 2013, 16: 205-212
[182]
114 Sun S, Gu M, Cao Y, et al. A constitutive expressed phosphate transporter, OsPht1;1, modulates phosphate uptake and translocation in phosphate-replete rice. Plant Physiol, 2012, 159: 1571-1581
[183]
115 Ai P, Sun S, Zhao J, et al. Two rice phosphate transporters, OsPht1;2 and OsPht1;6, have different functions and kinetic properties in uptake and translocation. Plant J, 2009, 57: 798-809
[184]
116 Shin H, Shin H S, Dewbre G R, et al. Phosphate transport in Arabidopsis: Pht1;1 and Pht1;4 play a major role in phosphate acquisition from both low- and high-phosphate environments. Plant J, 2004, 39: 629-642
[185]
137 Zhao J, Cheng N H, Motes C M, et al. AtCHX13 is a plasma membrane K+ transporter. Plant Physiol, 2008, 148: 796-807
[186]
138 Gambale F, Uozumi N. Properties of shaker-type potassium channels in higher plants. J Membr Biol, 2006, 210: 1-19
[187]
139 Very A A, Sentenac H. Molecular mechanisms and regulation of K+ transport in higher plants. Annu Rev Plant Biol, 2003, 54: 575-603
[188]
140 Wang Y, Wu W H. Potassium transport and signaling in higher plants. Annu Rev Plant Biol, 2013, 64: 451-476
[189]
141 Gupta M, Qiu X H, Wang L, et al. KT/HAK/KUP potassium transporters gene family and their whole-life cycle expression profile in rice (Oryza sativa). Mol Genet Genomics, 2008, 280: 437-452
[190]
142 Fuchs I, St？lzle S, Ivashikina N, et al. Rice K+ uptake channel OsAKT1 is sensitive to salt stress. Planta, 2004, 221: 212-221
[191]
143 Li J, Long Y, Qi G N, et al. The Os-AKT1 channel is critical for K+ uptake in rice roots and is modulated by the rice CBL1-CIPK23 complex. Plant cell, 2014, 26: 3387-3402
[192]
144 Isayenkov S, Isner J C, Maathuis F J M. Rice two-pore K+ channels are expressed in different types of vacuoles. Plant Cell, 2011, 23: 756-768
[193]
145 Xu J, Li H D, Chen L Q, et al. A protein kinase, interacting with two calcineurin B-like proteins, regulates K+ transporter AKT1 in Arabidopsis. Cell, 2006, 125: 1347-1360
[194]
146 Held K, Pascaud F, Eckert C, et al. Calcium-dependent modulation and plasma membrane targeting of the AKT2 potassium channel by the CBL4/CIPK6 calcium sensor/protein kinase complex. Cell Res, 2011, 21: 1116-1130
[195]
147 Liu L L, Ren H M, Chen L Q, et al. A protein kinase, calcineurin B-like protein-interacting protein kinase 9, interacts with calcium sensor calcineurin B-like protein 3 and regulates potassium homeostasis under low-potassium stress in Arabidopsis. Plant Physiol, 2012, 161: 266-277
[196]
154 Fox T C, Mary L G. Molecular biology of cation transport in plants. Annu Rev Plant Physiol Plant Mol Biol, 1998, 49: 669-696
[197]
155 Thomine S W R, Ward J M, Crawford N M, et al. Cadmium and iron transport by members of a plant transporter gene family in Arabidopsis with homology to NRAMP genes. Proc Natl Acad Sci USA, 2000, 97: 4991-4996
[198]
156 Ishimaru Y, Suzuki M, Tsukamoto T, et al. Rice plants take up iron as an Fe3+-phytosiderophore and as Fe2+. Plant J, 2006, 45: 335-346
[199]
157 Ishimaru Y, Kim S, Tsukamoto T, et al. Mutational reconstructed ferric chelate reductase confers enhanced tolerance in rice to iron deficiency in calcareous soil. Proc Natl Acad Sci USA, 2007, 104: 7373-7378
[200]
158 Vert G. IRT1, an Arabidopsis transporter essential for iron uptake from the soil and for plant growth. Plant Cell, 2002, 14: 1223-1233
[201]
159 Vert G A, Briat J F, Curie C. Dual regulation of the Arabidopsis high-affinity root iron uptake system by local and long-distance signals. Plant Physiol, 2003, 132: 796-804
[202]
160 Vert G, Barberon M, Zelazny E, et al. Arabidopsis IRT2 cooperates with the high-affinity iron uptake system to maintain iron homeostasis in root epidermal cells. Planta, 2009, 229: 1171-1179
[203]
161 Lin Y F, Liang H M, Yang S Y, et al. Arabidopsis IRT3 is a zinc-regulated and plasma membrane localized zinc/iron transporter. New Phytol, 2009, 182: 392-404
[204]
162 Connolly E L, Campbell N H, Grotz N, et al. Overexpression of the FRO2 ferric chelate reductase confers tolerance to growth on low iron and uncovers posttranscriptional control. Plant Physiol, 2003, 133: 1102-1110
[205]
163 Curie C, Cassin G, Couch D, et al. Metal movement within the plant: contribution of nicotianamine and yellow stripe 1-like transporters. Ann Bot, 2009, 103: 1-11
[206]
164 Bashir K, Ishimaru Y, Nishizawa N K. Iron uptake and loading into rice grains. Rice, 2010, 3: 122-130
[207]
165 Takahashi M N H, Kawasaki S, Nishizawa N K, et al. Enhanced tolerance of rice to low iron availability in alkaline soils using barley nicotianamine aminotransferase genes. Nat Biotechnol, 2001, 19: 466-469
[208]
166 Inoue H, Takahashi M, Kobayashi T, et al. Identification and localisation of the rice nicotianamine aminotransferase gene OsNAAT1 expression suggests the site of phytosiderophore synthesis in rice. Plant Mol Biol, 2008, 66: 193-203
[209]
167 Inoue H H K, Takahashi M, Nakanishi H, et al. Three rice nicotianamine synthase genes, OsNAS1, OsNAS2, and OsNAS3 are expressed in cells involved in long-distance transport of iron and differentially regulated by iron. Plant J, 2003, 36: 366-381
[210]
168 Masuda H, Kobayashi T, Ishimaru Y, et al. Iron-biofortification in rice by the introduction of three barley genes participated in mugineic acid biosynthesis with soybean ferritin gene. Front Plant Sci, 2013, 4: 132
[211]
169 M？ser P, Thomine S, Schroeder J I, et al. Phylogenetic relationships within cation transporter families of Arabidopsis. Plant Physiol, 2001, 126: 1646-1667
[212]
170 Grotz N, Guerinot M L. Molecular aspects of Cu, Fe and Zn homeostasis in plants. Biochim Biophys Acta, 2006, 1763: 595-608
[213]
171 Ishimaru Y, Masuda H, Suzuki M, et al. Overexpression of the OsZIP4 zinc transporter confers disarrangement of zinc distribution in rice plants. J Exp Bot, 2007, 58: 2909-2915
[214]
172 Lee S, Jeong H J, Kim S A, et al. OsZIP5 is a plasma membrane zinc transporter in rice. Plant Mol Biol, 2010, 73: 507-517
[215]
173 Lee S, Kim S A, Lee J, et al. Zinc deficiency-inducible OsZIP8 encodes a plasma membrane-localized zinc transporter in rice. Mol Cells, 2010, 29: 551-558
[216]
174 Palmgren M G, Clemens S, Williams L E, et al. Zinc biofortification of cereals: problems and solutions. Trends Plant Sci, 2008, 13: 464-473
[217]
175 Arnold T, Kirk G J, Wissuwa M, et al. Evidence for the mechanisms of zinc uptake by rice using isotope fractionation. Plant Cell Environ, 2010, 33: 370-381
[218]
176 Yang Z, Wu Y, Li Y, et al. OsMT1a, a type 1 metallothionein, plays the pivotal role in zinc homeostasis and drought tolerance in rice. Plant Mol Biol, 2009, 70: 219-229
[219]
177 Arrivault S, Senger T, Kramer U. The Arabidopsis metal tolerance protein AtMTP3 maintains metal homeostasis by mediating Zn exclusion from the shoot under Fe deficiency and Zn oversupply. Plant J, 2006, 46: 861-879
[220]
178 Haydon M J, Cobbett C S. A novel major facilitator superfamily protein at the tonoplast influences zinc tolerance and accumulation in Arabidopsis. Plant Physiol, 2007, 143: 1705-1719
[221]
179 Terry N, Zayed A M, De Souza M P, et al. Selenium in higher plants. Annu Rev Plant Physiol Plant Mol Biol, 2000, 51: 401-432
[222]
180 Shibagaki N R A, McDermott J P, Fujiwara T, et al. Selenate-resistant mutants of Arabidopsis thaliana identify Sultr1;2, a sulfate transporter required for efficient transport of sulfate into roots. Plant J, 2002, 29: 475-486
[223]
181 El Kassis E, Cathala N, Rouached H, et al. Characterization of a selenate-resistant Arabidopsis mutant. Root growth as a potential target for selenate toxicity. Plant Physiol, 2007, 143: 1231-1241
[224]
182 Zhang L, Shi W, Wang X. Difference in selenite absorption between high- and low-selenium rice cultivars and its mechanism. Plant Soil, 2006, 282: 183-193
[225]
183 Arvy M. Some factors influencing the uptake and distribution of selenite in the bean plant (Phaseolus vulgaris). Plant Soil, 1989, 117: 129-133
[226]
184 Arvy M. Selenate and selenite uptake and translocation in bean plants (Phaseolus vulgaris). J Exp Bot, 1993, 44: 1083-1087
[227]
185 Ulrich J M S A. Selenium absorption by excised astragalus roots. Plant Physiol, 1968, 43: 14-20
[228]
186 Zhang L, Yu F, Shi W, et al. Physiological characteristics of selenite uptake by maize roots in response to different pH levels. J Plant Nutr Soil Sci, 2010, 173: 417-422
[229]
187 Zhao X Q, Mitani N, Yamaji N, et al. Involvement of silicon influx transporter OsNIP2;1 in selenite uptake in rice. Plant Physiol, 2010, 153: 1871-1877
[230]
188 Li H F, McGrath S P, Zhao F J. Selenium uptake, translocation and speciation in wheat supplied with selenate or selenite. New Phytol, 2008, 178: 92-102
[231]
189 Zhang L H, Hu B, Li W, et al. OsPT2, a phosphate transporter, is involved in the active uptake of selenite in rice. New Phytol, 2014, 201: 1183-1191
[232]
190 Yokosho K, Yamaji N, Ueno D, et al. OsFRDL1 is a citrate transporter required for efficient translocation of iron in rice. Plant Physiol, 2009, 149: 297-305
[233]
191 von Wiren N K S, Bansal S, Briat J F, et al. Nicotianamine chelates both FeⅢ and FeⅡ: implications for metal transport in plants. Plant Physiol, 1999, 119: 1107-1114
[234]
192 Stephan U W, Schmidke I, Stephan V W, et al. The nicotianamine molecule is made-to-measure for complexation of metal micronutrients in plants. Biometals, 1996, 9: 84-90
[235]
193 Ling H Q, Koch G, Baumlein H, et al. Map-based cloning of chloronerva, a gene involved in iron uptake of higher plants encoding nicotianamine synthase. Proc Natl Acad Sci USA, 1999, 96: 7098-7103
[236]
194 Koike S, Inoue H, Mizuno D, et al. OsYSL2 is a rice metal-nicotianamine transporter that is regulated by iron and expressed in the phloem. Plant J, 2004, 39: 415-424
[237]
195 Ishimaru Y, Masuda H, Bashir K, et al. Rice metal-nicotianamine transporter, OsYSL2, is required for the long-distance transport of iron and manganese. Plant J, 2010, 62: 379-390
[238]
196 DiDonato R J Jr, Roberts L A, Sanderson T, et al. Arabidopsis Yellow Stripe-Like2 (YSL2): a metal-regulated gene encoding a plasma membrane transporter of nicotianamine-metal complexes. Plant J, 2004, 39: 403-414
