通过改变硫化信号,CmoPIP1-4赋予了南瓜的干旱耐受性
Hamza Sohail1, Iqra Noor1, Mirza Hasanuzzaman2
1National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, PR China.
Plant physiology and biochemistry : PPB
|March 13, 2024
概括
的抗干旱能力由CmoPIP1-4蛋白增强,该蛋白调节硫化信号传递和口腔功能. 淘汰CmoPIP1-4会增加南瓜植物对干旱的敏感性.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 干旱压力严重限制了南瓜的生长和发育.
- 血内在蛋白质 (PIPs) 是重要的水通道,调节细胞水平衡.
- 在干旱压力下的南瓜中,CmoPIP1-4,一个PIP,是上调调的.
研究的目的:
- 调查CmoPIP1-4在南瓜干旱耐受性中的作用.
- 阐明CmoPIP1-4介导干旱反应背后的分子机制.
主要方法:
- 在酵母中过度表达CmoPIP1-4 .
- 在南瓜根中CmoPIP1-4的CRISPR介导淘汰.
- 测量生理参数 (水的损失,口腔导电,H2S,ABA).
- 对基因表达特征和蛋白质相互作用的分析.
主要成果:
- 过度表达CmoPIP1-4增强了酵母的抗干旱能力.
- 在南瓜中CmoPIP1-4淘汰会增加干旱敏感性,降低H2S和ABA水平.
- 淘汰植物显示增加了水损失,透气和口腔导电性.
- 在淘汰植物中观察到抗氧化酶活性降低,素和糖含量降低.
- 关键干旱反应基因 (CmoHSP70s,CmoNCED3,CmoNCED4) 的表达在淘汰植物中下降.
- 确定了CmoPIP1-4和CmoDCD之间的相互作用,这表明它在H2S信号传输中的作用.
结论:
- CmoPIP1-4对于南瓜的干旱耐受性至关重要.
- CmoPIP1-4调节H2S介导的信号通路.
- CmoPIP1-4影响口腔密度和口腔孔径,影响水分的流失.
- CmoPIP1-4在增强南瓜抵御干旱压力的能力方面发挥着重要作用.
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