Protective effect of exogenously applied nitric oxide on aluminum-induced oxidative stress in soybean plants

Protective effect of exogenously applied nitric oxide on aluminum-induced oxidative stress in soybean plants
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外源一氧化氮对铝诱导的大豆氧化应激的保护作用

DOI:
10.1134/s1021443711050037
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发表时间:
2011-08
影响因子:
1.4
通讯作者:
Cai Miaozhen
Cai Miaozhen
中科院分区:
生物学4区
文献类型:
--
作者:
Wang Fangmei;Wang Ning;Xu Shiyou;Zhang Shuna;Cai Miaozhen

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铝毒促进了植物的氧化损伤,而一氧化氮(NO)可能对大豆铝毒状况产生有益的影响。在铝胁迫前用NO供体硝普钠(SNP)预处理可显著降低大豆根尖铝的积累和MDA的诱导。与单独铝处理相比,SNP预处理还增加了相对根伸长、叶绿素含量和保护酶过氧化物酶活性。结果表明,外源性NO对Al诱导的氧化应激具有保护作用,而NO清除剂2-(4-羧基-2-苯基)-4,4,5,5-四甲基咪唑啉-1-氧基-3-氧化物(cPTIO)对Al诱导的氧化应激具有逆转作用。
Aluminum (Al) toxicity promotes oxidative damage in plants, while nitric oxide (NO) may exert a beneficial effect on Al toxicity condition in soybean. Pretreatment with NO donor sodium nitroprusside (SNP) before soybean exposure to Al significantly reduced Al accumulation and MDA induction in the root apex. Pretreatment with SNP also increased the relative root elongation, chlorophyll content, and activity of the protective enzyme peroxidase compared to Al treatment alone. These results show the effect of exogenously applied NO as a protector against oxidative stress induced by Al. Moreover, the ameliorating effect can be reversed by the addition of NO scavenger 2-(4-carboxy-2-phenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO) in the presence of Al.
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发表时间: 2009-11
影响因子: 4.3
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