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首页> 外文期刊>Plant Protection Science >Effect of 5-azacytidine induced DNA demethylation on abiotic stress tolerance in Arabidopsis thaliana
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Effect of 5-azacytidine induced DNA demethylation on abiotic stress tolerance in Arabidopsis thaliana

机译：5-氮杂胞苷诱导的DNA去甲基化对拟南芥中非生物胁迫耐受性的影响

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摘要

The effect of 5-azacytidine (5A)-induced DNA hypomethylation on the growth and abiotic stress tolerance of Arabidopsis thaliana were analysed. Growth analysis revealed that aqueous solutions of 5A added to the soil did not affect the fresh and dry biomass accumulation but led to a higher percentage of flowering A. thaliana plants after four weeks of cultivation. The 5A treatment considerably lowered survival rates of Arabidopsis plants under high soil salinity, heat stress, and drought, while it did not affect the survival rates after freezing stress. 5A eliminated the stimulatory effect of the heat and drought stresses on the transcriptional levels of a number of stress-inducible genes, such as DREB1, LEA, SOS1, or RD29A. A less clear but similar trend has been detected for the effect of 5A on expression of the stress-inducible genes under salt and cold stresses. The data indicate that DNA methylation is an important mechanism regulating plant abiotic stress resistance.
机译：分析了5-氮杂胞苷（5A）诱导的DNA低甲基化对拟南芥拟南芥生长和非生物胁迫耐受性的影响。 成长分析显示，在土壤中添加5A的水溶液并未影响新鲜干燥的生物质积累，而是导致培养四周后的植物植物的百分比较高。 5A治疗在高土壤盐度，热应激和干旱下显着降低了拟南芥植物的存活率，同时它不会影响冷冻胁迫后的存活率。 5A消除了热量和干旱胁迫对多种应激诱导基因的转录水平的刺激作用，例如DREB1，LEA，SOS1或RD29A。 对于5A对盐和冷应力下应激诱导基因的表达的影响，已经检测到较小但相似的趋势。 数据表明DNA甲基化是调节植物非生物胁迫性的重要机制。

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