全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
植物研究  2015 

KCl对NaCl胁迫下燕麦幼苗活性氧代谢和渗透溶质积累的影响

DOI: 10.7525/j.issn.1673-5102.2015.02.011, PP. 233-239

Keywords: 燕麦,NaCl胁迫,KCl,活性氧代谢,渗透溶质,Na+/K+

Full-Text   Cite this paper   Add to My Lib

Abstract:

?在温室砂培条件下,研究了不同浓度KCl(1、10、20、30mmol·L-1)对120mmol·L-1NaCl胁迫下‘定莜6号’燕麦植株生长、叶片活性氧代谢和渗透溶质积累的影响。结果表明:(1)与1mmol·L-1KCl处理相比,10和20mmol·L-1KCl显著提高了NaCl胁迫下燕麦幼苗的鲜重、干重和相对含水量;叶片超氧阴离子、H2O2、丙二醛和谷胱甘肽含量及质膜相对透性明显下降;超氧化物歧化酶、过氧化物酶和抗坏血酸过氧化物酶活性显著提高,其中20mmol·L-1KCl的作用大于10mmol·L-1KCl;过氧化氢酶活性和抗坏血酸含量则变化不大,而30mmol·L-1KCl却加剧了盐胁迫伤害。(2)10和20mmol·L-1KCl处理的燕麦叶片可溶性蛋白质、可溶性糖和脯氨酸的含量显著高于其它处理,而游离氨基酸含量与1mmol·L-1KCl处理相比明显下降,有机酸含量则保持相对稳定。(3)随着KCl浓度提高,燕麦叶片K+/Na+增大,质膜H+-ATP酶活性先升后降。上述结果表明,以Na+/K+6∶1施用钾肥可通过提高活性氧清除能力和渗透溶质积累有效缓解盐胁迫对燕麦幼苗的伤害。

References

[1]  2.Wei T,Ronald J.Newton Polyamines reduce salt-induced oxidative damage by increasing the activities of antioxidant enzymes and decreasing lipid peroxidation in Virginia pine[J].Plant Growth Regulation,2005,46:31-43.
[2]  3.Hassan I A.Interactive effects of salinity and ozone pollution on photosynthesis,stomatal conductance,growth,and assimilate partitioning of wheat( Triticum aestivum L.)[J].Photosynthetica,2004,42(1):111-116.
[3]  4.Maathuis F J M,Amtmann A.K + nutrition and Na + toxicity:The basis of cellular K +/Na + ratios[J].Annals of Botanny,1999,84:123-133.
[4]  5.Cengiz K A,Levent T,Muhnmmad A,et al.Improved salt tolerance of melon( Cucumis melo L.) by the addition of proline and potassium nitrate[J].Environmental and Experimental Botany,2007,60:397-403.
[5]  6.Zheng Y,Jia A,Ning T,et al.Potassium nitrate application alleviates sodium chloride stress in winter wheat cultivars differing in salt tolerance[J].Journal of Plant Physiology,2008,165(14):1455-1465.
[6]  7.黄增荣,隆小华,刘兆普,等.KNO3对NaCl胁迫下两菊芋品种幼苗生长及光合能力的影响[J].草业学报,2011,20(1):82-88.
[7]  8.葛江丽,姜闯道.盐胁迫下钾离子对甜高粱碳同化和光系统Ⅱ的影响[J].东北农业大学学报,2012,43(7):70-74.
[8]  9.王波,张金才,宋凤斌,等.燕麦对盐碱胁迫的生理响应[J].水土保持学报,2007,21(3):86-89.
[9]  10.杨科,张保军,胡银岗,等.混合盐碱胁迫对燕麦种子萌发及幼苗生理生化特性的影响[J].干旱地区农业研究,2009,27(3):188-192.
[10]  11.Tan W,Liu J,Dai T,et al.Alterations in photosynthesis and antioxidant enzymes activity in winter wheat subjected to postanthesis water-logging[J].Photosynthetica,2008,46:21-27.
[11]  12.Sui N,Liu X,Wang N,et al.Response of xanthophylls cycle and chloroplastic antioxidant enzymes to chilling stress in tomato over-expressing glycerol-3-phosphate acyltransferase gene[J].Photosynthetica,2007,45:447-454.
[12]  13.Moloi M J,Westhuizen A J.The reactive oxygen species are involved in resistance responses of wheat to the Russian wheat aphid[J].Journal of Plant Physiology,2006,163:1118-1125.
[13]  14.Predieri S,Norman H A,Krizek D T,et al.Influence of UV-B radiation on membrane lipid composition and ethylene of evolution in ‘Doyenne d’Hiver’ pear shoots grown in vitro under different photosynthetic photo fluxes[J].Environmental and Experimental Botany,1995,35:152-160.
[14]  15.李合生.植物生理生化实验原理和技术[M].北京:高等教育出版社,2000:119-263.
[15]  16.Ellman G L.Tissue sulfhydryl groups[J].Archives of Biochemistry and Biophysics,1959,82:70-77.
[16]  17.Arakawa N,Tsutsumi K,Sanceda N G,et al.A rapid and sensitive method for the determination of ascorbic acid using 4,7-diphenyl-1,10-phenanthroline[J].Agricultural Biology and Chemistry,1981,45:1289-1290.
[17]  18.陈海燕,崔香菊,陈熙,等.盐胁迫及La 3+对不同耐盐性水稻根中抗氧化酶及质膜H +-ATPase的影响[J].作物学报,2007,33(7):1086-1093.
[18]  19.赵旭,王林权,周春菊,等.盐胁迫对四种基因型冬小麦幼苗Na +、K +吸收和累积的影响[J].生态学报,2007,27(1):205-213.
[19]  20.郑延海,宁堂原,贾爱君,等.钾营养对不同基因型小麦幼苗NaCl胁迫的缓解作用[J].植物营养与肥料学报,2007,13(3):381-386.
[20]  21.宋姗姗,刘玲,隆小华,等.氯化钾对长春花盛花期盐胁迫效应和生物碱含量的影响[J].西北植物学报,2010,30(7):1415-1419.
[21]  22.刘建新,王金成,王瑞娟.燕麦幼苗活性氧代谢和渗透调节物质积累对NaCl胁迫的响应[J].生态学杂志,2012,31(9):2255-2260.
[22]  23.Shabala S N,Shabala I,Van V E.Effect of calcium on root development and root ion fluxes in salinised barley seedlings[J].Functional Plant Biology,2003,30(5):507-514.
[23]  24.郑延海,蒋高明.外源硝酸钾对小麦氯化钠胁迫缓解机理的研究进展[J].中国科学,2008,53(24):3140.
[24]  25.周峰,周泉澄,华春,等.NaCl和KCl对毕氏海蓬子生长和几种抗氧化酶活性的影响[J].植物生理学通讯,2008,44(1):51-54.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133