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编码DNA甲基转移酶的ZMET2中的自然多态度调节了玉米皮层的数量

Zi Wang¹, Aiai Xia¹, Qi Wang¹

¹State Key Laboratory of Maize Bio-breeding, National Maize Improvement Center of China, China Agricultural University, Beijing 100094, China.

Plant physiology

|March 2, 2024

概括

甲基转移酶2 (ZMET2) 基因的自然变异会影响玉米中的DNA甲基化和层数量. 这个基因,这个基因.

科学领域:

植物遗传学和表观遗传学
提高作物质量和适应作物的方法.

背景情况:

基因甲基化对于作物的农学特征和环境适应性至关重要.
玉米 (Zea mays) 中的DNA甲基化相关基因的自然遗传变异及其对特征的影响尚未得到充分理解.
甲基转移酶2 (ZMET2) 是一个关键基因,参与维持DNA甲基化.

研究的目的:

研究玉米中与DNA甲基化相关的基因中自然多态的作用.
确定Zea甲基转移酶2 (ZMET2) 的变异如何促进表型多样性,特别是层数.

主要方法:

在ZMET2.2.的3'UTR中确定了一个多态的10bp插入/删除变体.
分析了ZMET2转录水平及其与外层变异的相关性.
研究ZMET2破坏突变体中的全基因组DNA甲基化模式.
进行了种群遗传分析,以评估对ZMET的选择压力2.

主要成果:

一种ZMET2 3'UTR插入/删除变体显著改变了玉米中的ZMET2转录水平和层数量.
破坏ZMET2会导致皮层增加和成千上万的差异甲基化区域.
自然的ZMET2基因表现出与观察到的表型变异相关的甲基化模式.
ZMET2一直在选择中,可能有助于玉米适应不同气候.

结论:

在ZMET2的自然变异显著影响玉米的全球和特定位置的DNA甲基化.
ZMET2变异有助于表型多样性,影响诸如外层数量的特征.
ZMET2在玉米适应中发挥作用,可能使其在不同的环境中传播.

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