在玉米化过程中,通过两个定量位置控制单一或双核行的确定
Manjun Cai1,2, Qing Xiong2, Ruijie Mao2
1National Health Commission Science and Technology Innovation Platform for Nutrition and Safety of Microbial Food, Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, People's Republic of China.
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
|September 19, 2024
概括
玉米化通过遗传变化增加了内核行数 (KRN). 一个关键的基因,Zm00001d033675,通过影响斯酸生物合成和尖细胞发育来影响KRN.
科学领域:
- 植物遗传学和基因组学
- 农作物的化和进化.
- 分子生物学分子生物学
背景情况:
- 玉米的化大大增加了耳朵的大小和谷物生产率.
- 核心排序号 (KRN),一个关键的产量特征,从teosinte的2增加到现代玉米的8.
- 对于KRN化的遗传基础尚未完全理解.
研究的目的:
- 阐明玉米内核行号 (KRN) 化的遗传和分子机制.
- 为了识别控制KRN变异的基因在teosinte和玉米之间.
主要方法:
- 开发了一个teosinte-maize BC2F7入侵群体.
- 确定了一个具有减少KRN的theosinte线 (Ter1).
- 精细映射的定量特征位点 (QTL) 和已识别的候选基因.
主要成果:
- 确定了Ter1的两个QTL,主要的QTL映射到300kb间隔.
- 建议Zm00001d033675 (qPEDS1) 作为KRN的因果基因.
- Ter1通过影响斯酸生物合成和spikelet命运来影响KRN.
结论:
- Zm00001d033675 (qPEDS1) 是一个主要的QTL基因,在玉米化过程中控制KRN.
- 斯蒙酸生物合成与决定尖端细胞命运和KRN有关.
- 提供了对KRN化和新的化潜力的见解.
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