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综合转录组和代谢组分析确定了调节玉米对性压力耐受性的关键基因

Shouxu Liu¹, Zichang Jia², Xuanxuan Hou¹

¹National Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China.

International journal of molecular sciences

|November 13, 2025

概括

玉米根通过分泌马龙酸来对抗性压力,降低土壤pH值并保持根生长. 这涉及调节像阿斯巴拉金合成酶这样的关键基因,为开发耐盐作物提供目标.

科学领域:

农业科学农业科学
植物生物学植物生物学
分子遗传学分子遗传学

背景情况:

土壤盐化对全球粮食安全构成重大威胁.
开发耐盐条件的作物对于可持续农业至关重要.

研究的目的:

调查玉米中性应力耐受性背后的分子机制.
确定玉米对压力的反应中涉及的遗传因素和代谢途径.

主要方法:

对369个玉米杂交品种进行选,以确定耐和敏感品种.
分析根结构,树根球pH值,代谢学和转录学.
RT-qPCR和多omics的相关性分析.

主要成果:

耐的玉米品种保持了根结构,降低了树根球的pH值.
通过pyrimidine途径分泌的马龙酸在耐药品种中增强.
在耐药品种中观察到阿斯巴拉金合成酶 (Zm00001eb396990) 的上调和细胞因素脱酶 (Zm00001eb370000) 的下调.

结论:

玉米根通过马龙酸分泌和基因调节减轻性压力.
阿斯巴拉金合成酶表达与马龙酸积累相关,有助于应激耐受.
这项研究为种植耐玉米提供了理论基础和潜在的遗传点.

关键词:

性压力是一种性压力.玉米玉米玉米是一种代谢组代谢组的代谢有机酸有机酸有机酸根系根系根系根系根系转录组 (transcriptome) 是一个转录组.

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