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鉴定了涉及ABA和MAPK信号通路的基因,以积极调节大米的耐寒性

Guohua Ding^1,2, Zhugang Li^1,2, Zubair Iqbal³

¹Institute of Crop Cultivation and Tillage, Heilongjiang Academy of Agricultural Sciences/Heilongjiang Rice Quality Improvement and Genetic Breeding Engineering Research Center, Harbin 150086, China.

Plants (Basel, Switzerland)

|February 26, 2025

概括

寒冷压力严重影响到大米的生长. 一个耐寒米线 (LD18) 显示了增强的MAPK和ABA信号通路,这对于耐寒育种至关重要.

科学领域:

植物科学植物科学
遗传学是一个遗传学.
农业学是一种农业学.

背景情况:

寒冷压力 (CS) 对大米 (Oryza sativa L.) 的生产力产生负面影响,特别是在种植和标题阶段.
鉴定耐寒性的遗传变异对于改善在具有挑战性的环境中种植大米至关重要.

研究的目的:

为了研究大米冷应激耐受性背后的分子机制.
为了确定关键的基因和代谢途径参与寒冷应激反应.

主要方法:

在两年内进行实地观测,以识别对比的品种 (L9敏感,LD18耐受).
转录组分析以确定差异表达基因 (DEG) 和丰富的通路.
定量PCR (qPCR) 用于验证基因表达水平.
代谢分析以评估途径的丰富性.

主要成果:

与L9相比,LD18表现出明显更高的耐寒性,同时保持了光合作用效率.
转录组分析显示,在LD18.中,丰富的碳固定,谷氨和MAPK信号通路在LD18.中被发现.
关键的MAPK相关基因 (LOC4342017,LOC9267741,LOC4342267) 和ABA信号基因在CS下在LD18表达显著更高.
在CS下,代谢分析表明在LD18中酸盐代谢,TCA循环和碳代谢的丰富.

结论:

米的寒冷耐受性涉及重新编程碳同化途径.
MAPK和ABA信号通路在调节大米冷应激反应方面发挥着关键作用.
确定了关键的DEG,提供了基因工程的目标,以提高大米的耐寒性.

关键词:

在 ABA 信号传输中.在MAPK信号传输中.寒冷的压力是冷的压力.综合性分析是一种综合性分析.转录规则转录规则转录规则

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