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Mn对超富集植物短毛蓼(Polygonum pubescens Blume)抗氧化机理的影响

Keywords: ,短毛蓼,抗氧化酶,非酶物质

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Abstract:

采用水培的方法,研究了不同浓度Mn(0、0.5、1、2、4、8mmol·L-1)对新发现的Mn超富集植物短毛蓼(PolygonumpubescensBlume)生长、Mn吸收及Mn对其抗氧化酶和非酶系统的影响。结果表明,锰处理显著增加了(P<0.05)短毛蓼根、茎、叶中Mn的含量,锰处理还引起了短毛蓼叶片中过氧化氢(H2O2)和丙二醛(MDA)的累积。当Mn处理浓度大于1mmol·L-1时,显著降低了短毛蓼的株高、株重(P<0.05);当Mn处理浓度为8mmol·L-1时,短毛蓼叶片中叶绿素a、叶绿素b、叶绿素a+b含量最低,与对照差异显著(P<0.05)。Mn处理显著提高了短毛蓼叶片中超氧物歧化酶(SOD)活性(P<0.05),而过氧化物酶(POD)、过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)的活性呈先升后降趋势,表明Mn处理打破了短毛蓼活性氧物质的正常代谢,并启动了抗氧化酶系统。8mmol·L-1的Mn处理,显著提高了短毛蓼叶片中巯基(-SH)、还原型谷胱甘肽(GSH)的含量(P<0.05),比对照分别提高了10.6%和20%,表明-SH、GSH在短毛蓼缓解Mn毒害的过程中起着重要作用。

References

[1]  Seth C S;Chaturvedi P K;Misra V,Therole of phyt ochelatins and antioxidants in tolerance to Cd accumulation in Brassica juncea L,Ecotoxicology and Environmental Safety,2008(I).
[2]  郑爱珍.重金属Cr6+污染对辣椒幼苗生理生化特性的影响[J].农业环境科学学报,2007(4)
[3]  汤叶涛;关丽捷;仇荣亮.镉对超富集植物滇苦菜抗氧化系统的影响[J].生态学报,2010(2)
[4]  Wang C;Zhang S H;Wang P F,The effect of excess Zn on mineral nutrition and antioxidative response in rapeseed seedlings,Chemosphere,2009.
[5]  Zhao F J;Wang, J. R;Barker, J. H. A;Schat, H., Bleeker, P. M., McGrath, S. P,The role of phytochelatins in arsenic tolerance in the hyperaccumulator Pteris vittata,New Phytologist? ,2003, 159.
[6]  Gallego S M;Benavides M P;Tomaro M L,Effect of cadmium ions on antioxidant defense system in sunflower cotyledons,Biological Plant,1999(1).
[7]  Liu Y;Wang H B;Wong M H,The role of arsenate reductase and superoxide dismutase in As accumulation in four Pteris species,Environment International,2009.
[8]  邹琦,植物生理学实验指导,北京:中国农业出版社,2008.
[9]  Shamsi I H;Jilani G;Zhang G P,Cadmium stress tolerance through potassium nutrition in soybean,Asian Journal of Chemistry,2008.
[10]  M.M.Posmyk ;R.Kontek ;K.M.Janas,Antioxidant Enzymes Activity And Phenolic Compounds Content In Red Cabbage Seedlings Exposed To Copper Stress,Ecotoxicology and Environmental Safety?,2009, 72(2).
[11]  中国科学院上海植物生理研究所,现代植物生理学实验指南,北京:科学出版社,1999.
[12]  Xinde Cao ;Lena Q. Ma ;Cong Tu,Antioxidative responses to arsenic in the arsenic-hyperaccumulator Chinese brake fern (Pteris vittata L.),Environmental Pollution?,2004, 128(3).
[13]  李合生;孙群;赵世杰,植物生理生化试验原理和技术,北京:高等教育出版社,2000.
[14]  Mishra S;Srivastava S;Tripathi RD,Phytochelatin synthesis and response of antioxidants during cadmium stress in Bacopa monnieri L,Plant Physiology and Biochemistry? ,2006, 44.
[15]  李红;冯永忠;杨改河.铜胁迫对芥菜光合特性及叶绿素荧光参数的影响[J].农业环境科学学报,2009(8)
[16]  邓华;李明顺;陈英旭.锰在短毛蓼不同器官中的亚细胞分布及化学形态[J].广西师范大学学报(自然科学版),2010(1)
[17]  邓华;李明顺;陈英旭.短毛蓼对Cd的富集特征研究[J].安徽农业科学,2010(10)
[18]  邓华;李明顺;陈英旭.超富集植物短毛蓼对锰的富集特征[J].生态学报,2009(10)
[19]  孙守琴;何明;曹同.Pb、Ni胁迫对大羽藓抗氧化酶系统的影响[J].应用生态学报,2009(4)
[20]  谢飞;王宏镔;王海娟.砷胁迫对不同砷富集能力植物叶片抗氧化酶活性的影响[J].农业环境科学学报,2009(7)
[21]  Fu J M;Huang B R,Involvement of antioxidants and lipidperoxidation in the adaptation of two cool-season grasses to localized drought stress,Environmental and Experimental Botany? ,2001, 45.
[22]  吴惠芳;刘鹏;龚春风.Mn胁迫对龙葵和小飞蓬生长及叶绿素荧光特性的影响[J].农业环境科学学报,2010(4)
[23]  Najeeb U;Xu L;Ali S;Jilani G Gong HJ Shen WQ Zhou WJ,Citric acid enhances the phytoextraction of manganese and plant growth by alleviating the ultrastructural damages in Juncus effusus L,Journal of Hazardous Materials? ,2009, 170.
[24]  任立民;刘鹏;蔡妙珍.水蓼、小飞蓬、杠板归和美洲商陆对锰毒的生理响应[J].水土保持学报,2007(3)
[25]  于方明;汤叶涛;仇荣亮.Cd胁迫下超富集植物圆锥南芥抗氧化机理[J].环境科学学报,2010(2)
[26]  陈燕珍;陶毅明;梁振鑫.锰胁迫对商陆(Phytolacca acinosa)保护酶的影响[J].生物学杂志,2008(3)
[27]  Shi Q H;Zhu Z J;Xu M;Qian Q Q,Yu J Q,Effects of excess manganese on the antioxidant system in Cucumis sativus L.under two light intensities,Environmental and Experimental Botany? ,2006, 58.

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