Nitric oxide inhibits aluminum-induced programmed cell death in peanut (Arachis hypoganea L.) root tips

文献类型： 外文期刊

第一作者： Huang, Wenjing

作者： Huang, Wenjing;Oo, Thet Lwin;Gu, Minghua;He, Long-Fei;He, Huyi;He, Long-Fei

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关键词： Al toxicity;Programmed cell death;Nitric oxide;Peanut;Root tips

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

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收录情况： SCI

摘要： It had been reported that Aluminum (Al) stress altered nitric oxide (NO) concentration and induced programmed cell death (PCD) in plants. However, the relationship between NO and PCD occurrence under Al stress is unclear. The results showed that cell death induced by Al was significant negative correlation with the inhibition of Al on root elongation growth in peanut. AlCl3 at 100 mu mol L-1 induced DNA ladder, chromatin condensation, typical apoptotic chromatin condensation staining with DAPI, apoptosis related gene Hrs203j expression and caspase3-like protease activation in peanut root tip cells, and showed that Al-induced cell death in peanut root tip cells was a typical PCD. Exogenous NO donor sodium nitroprusside (SNP) at 200 mu mol L-1 inhibited Al-induced PCD occurrence, but NO specific scavenger cPTIO aggravated PCD production. It suggests that NO is a negative regulator of Al-induced PCD in peanut root tips. (C) 2017 Elsevier B.V. All rights reserved.

分类号： TB1

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