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镉在不结球白菜中的积累及外源脱落酸对镉积累的影响

DOI: 10.7685/j.issn.1000-2030.2008.04.011, PP. 61-65

Keywords: ,脱落酸,不结球白菜,蒸腾速率

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Abstract:

采用溶液培养的方法,研究了镉(Cd)和脱落酸(ABA)对不结球白菜幼苗生长以及Cd积累的影响。结果表明,10μmol?L-1Cd处理显著抑制不结球白菜幼苗的干物质积累,降低不结球白菜叶片的净光合速率、蒸腾速率、气孔导度、PSⅡ最大光化学效率、PSⅡ光合电子传递量子效率、电子传递速率和光化学猝灭系数,增加不结球白菜叶片的非光化学猝灭系数。5μmol?L-1ABA处理对不结球白菜地上部干物质的积累及净光合速率没有显著影响,但降低了不结球白菜的根系干重、叶片的蒸腾速率和气孔导度。而在100μmol?L-1Cd胁迫下,外源ABA处理明显增加不结球白菜根系Cd含量,降低Cd向地上部的转运能力,降低不结球白菜地上部Cd含量。试验结果还显示不结球白菜地上部Cd含量占总Cd含量的百分比与叶片蒸腾速率呈显著正相关。

References

[1]  Zhou Wenbin,Qiu Baosheng.Effects of cadmium hyperaccumulation on physiological characteristics of Sedum alfredii Hance(Crassulaceae)[J].Plant Science.2005,169:737-745
[2]  李德明,朱祝军,刘永华.镉对小白菜光合作用特性影响的研究[J].浙江大学学报(农业与生命科学版).2005,31(4):459-464
[3]  孙光闻.小白菜镉积累及毒害生理机制的研究[D].杭州:浙江大学.2004
[4]  Gorinova N,Nedkovska M,Todorovska E.Improved phytoaccumulation of cadmium by genetically modified tobacco plants(Nicotiana tabacum L.):physiological and biochemical response of the transformants to cadmium toxicity[J].Environmental Pollution.2007,145:161-170
[5]  Gong J-M,Lee D A,Schroeder J I.Long-distance root-to-shoot transport of phytochelatins and cadmium in Arabidopsis[J].Proceedings of the National Academy of Sciences(USA).2003,100(17):10118-10123
[6]  Mantyla E,Lang V,Palva E T.Role of abscisic acid in drought-induced freezing tolerance,cold acclimation,and accumulation of LTI78 and RAB18 proteins in Arabidopsis thaliana[J].Plant Physiology.1995,107:141-148
[7]  刘传平,郑爱珍,田娜.外源GSH对青菜和大白菜镉毒害的缓解作用[J].南京农业大学学报.2004,27(4):26-30
[8]  陈亚华,黄少华,刘胜环.南京地区农田土壤和蔬菜重金属污染状况研究[J].长江流域资源与环境.2006,15(3):356-360
[9]  张宪政.作物生理研究法[M].北京:中国农业出版社.1992:129-150
[10]  Toppi L S,Gabbrielli R.Response to cadmium in higher plants[J].Environmental and Experimental Botany.1999,41:105-130
[11]  潘瑞炽.植物生理学[M].北京:高等教育出版社.2001:195-197
[12]  Haag-Kerwer A,Schafer H J,Heiss S.Cadmium exposure in Brassica juncea causes a decline in transpiration rate and leaf expansion without effect on photosynthesis[J].Journal of Experimental Botany.1999,50(341):1827-1835
[13]  Perfus-Barbeoch L,Leonhardt N,Vavasseur A.Heavy metal toxicity:cadmium permeates through calcium channels and disturbs the plant water status[J].Plant Journal.2002,32:539-548
[14]  张守仁.叶绿素荧光动力学参数的意义及讨论[J].植物学通报.1999,16(4):444-448
[15]  Salt D E,Prince R C,Pickering I J.Mechanisms of cadmium mobility and accumulation in Indian mustard[J].Plant Physiology.1995,109:1427-1433
[16]  Florijn P J,van Beusichem M L.Uptake and distribution of cadmium in maize inbred lines[J].Plant and Soil.1993,150:25-32
[17]  孙仲秧.外源脱落酸缓解水稻镉毒害的生理机制研究[D].杭州:浙江大学.2006
[18]  Hsu Y T,Kao C H.Role of abscisic acid in cadmium tolerance of rice(Oryza sativa L.)seedlings[J].Plant Cell and Environment.2003,26:867-874
[19]  Hsu Y T,Kao C H.Abscisic acid accumulation and cadmium tolerance in rice seedlings[J].Physiologia Plantarum.2005,124:71-80

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