根源衍生型转子素类型的细胞因素通过调节能量代谢来增加大米苗的寒冷耐受性
Yi Yang1, Jian Luo1,2, Jingyi Feng1
1College of Agronomy, Northwest A&F University, Yangling, China.
Plant, cell & environment
|September 24, 2025
概括
细胞因素,特别是跨酸 (tZ),通过促进能量代谢,增强大米幼苗的寒冷耐受性. 这项研究揭示了tZ运输是冷却适应的关键,为改善大米抗寒能力提供了策略.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 米苗易受寒冷压力影响,影响作物产量.
- 细胞因子是重要的植物信号分子,参与应激反应.
- 细胞激素在米寒冷应激适应中的确切作用尚未完全理解.
研究的目的:
- 为了研究米中细胞因素介导的冷应激反应的机制.
- 阐明跨酸 (tZ) 类型细胞因子在米冷却适应中的作用.
- 为了确定增强大米抗寒能力的潜在途径.
主要方法:
- 在低温下对寒冷耐受性和寒冷敏感性大米品种的比较转录组和代谢组分析.
- 对细胞因素缺陷突变物 (例如,abcg18) 的分析,以评估细胞因素运输.
- 外源性应用的转乙 (tZ) 评估其对寒冷耐受性和能量代谢的影响.
主要成果:
- 耐寒米在叶子中表现出较高水平的根系tZ型细胞因子,增加能量代谢,并增加ATP含量.
- 一种tZ运输缺陷突变体显示寒冷耐受性降低和能量代谢受损.
- 外源的tZ应用改善了敏感大米和突变动物的能量代谢和耐寒性.
结论:
- 源自根系的tZ型细胞因素通过促进能量代谢和维持细胞能量平衡来增强大米苗的低温适应性.
- 携带tZ型细胞因子的运输对大米寒冷应激反应至关重要.
- 操纵细胞因素信号通路为改善大米抗寒能力提供了一个有希望的策略.
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