硝酸还原酶介导的一氧化氮对植物<br/>铝胁迫耐受性的增强作用-《江苏农业科学》

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Title:: Potentiation of nitrate reductase-mediated nitric oxide to aluminum tolerance of plants

作者:: 王华华; 李焱; 候俊杰; 河南师范大学生命科学学院，河南新乡 453007

Author(s):: Wang Huahua; et al

关键词:: 一氧化氮; 铝毒害; 硝酸还原酶; 一氧化氮突变体; 耐受性

Keywords:: -

分类号:: Q945.78

DOI:: -

文献标志码:: A

摘要:: 以拟南芥野生型、一氧化氮(NO)产生途径相关突变体Atnoa1(NO合成酶缺失突变体)和nialnia2(硝酸还原酶缺失突变体)为材料，研究铝毒害对拟南芥野生型、Atnoa1和nialnia2的影响。试验结果显示，不同浓度(0～200 μmol/L)AlCl₃处理抑制了拟南芥中根的生长，野生型和Atnoa1突变体表现出一致的抑制趋势，而nialnia2突变体中根生长的抑制程度更严重。进一步的结果显示，AlCl₃处理增加了拟南芥中丙二醛和活性氧(H₂O₂和O^-₂· )含量，野生型和Atnoa1突变体表现出一致的增加趋势，而nialnia2突变体中丙二醛和活性氧含量增加幅度更大；此外，AlCl₃处理显著增加了拟南芥中还原型抗坏血酸(AsA)和谷胱甘肽(GSH)的含量，野生型和Atnoa1突变体表现出一致的增加趋势，而nialnia2突变体中AsA和GH含量增加幅度最小。这些结果表明，硝酸还原酶途径介导的NO在增强植物抗铝毒害过程中起着重要的作用。

Abstract:: -

参考文献/References:

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