细胞酸甘-3-酸盐脱酶调节氧化应激下植物干细胞的维持
Jiaqi Qiu1, Minghuang Chen1, Zheqi Cai1
1State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Fujian, 361102, China.
Plant cell reports
|May 13, 2025
概括
细胞质糖-3-酸脱酶 (GAPDH) 作为植物中过氧化 (H2O2) 的关键传感器. 这种蛋白质通过在氧化应激下与WUS/WOX蛋白相互作用来调节植物干细胞的维持.
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 生化学
背景情况:
- 植物干细胞平衡对于持续的生长和发育至关重要.
- 环境压力,如过氧化 (H2O2) 的增加,可以破坏干细胞的功能.
- 植物干细胞感知和响应H2O2的机制尚未完全理解.
研究的目的:
- 研究细胞质甘-3-酸脱酶 (GAPDH) 在氧化应激下植物干细胞维持中的作用.
- 阐明GAPDH对H2O2信号的反应的分子机制.
主要方法:
- 研究了Arabidopsis中细胞质GAPDH异型 (GAPC1和GAPC2) 的局部化和功能.
- 分析了GAPDH与WUSCHEL (WUS) 和WUSCHEL相关的HOMEOBOX (WOX) 蛋白质的相互作用.
- 研究了改变GAPC1和GAPC2表达在H2O2治疗下对干细胞稳态和植物生长的影响.
主要成果:
- 过氧化 (H2O2) 诱导细胞质GAPDH (GAPC1和GAPC2) 从细胞质转移到细胞核.
- 核GAPDH异型与WUS/WOX蛋白相互作用,并通过与促进体结合来调节WUS/WOX基因表达.
- 减少GAPC1和GAPC2的表达导致干细胞稳态和植物生长对H2O2.2的敏感性增加.
结论:
- 细胞质GAPDH功能作为植物干细胞维护的关键调节者,以应对H2O2.2.
- GAPDH作为氧化应激的传感器,通过与WUS/WOX转录因子的相互作用来调解反应.
- 了解GAPDH的作用为植物适应环境压力和保持生长提供了洞察力.
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