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在玉米中,在玉米核发育过程中,氨酸和氨酸的积累动态,以及不透明2,不透明16和双突变 (不透明2/不透明16) 基因型中的核修饰

Gulab Chand^1,2, Vignesh Muthusamy¹, Tanu Allen²

¹Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India.

Journal of applied genetics

|June 8, 2025

概括

玉米不透明2 (o2) 和不透明16 (o16) 基因增加了氨酸和氨酸. o2o16基因型显示了最高的氨基酸含量,这两种特征在核发育过程中都在减少.

科学领域:

植物遗传学和育种.
营养生物化学营养生物化学
发展玉米的发展.

背景情况:

众所周知,递归不透明2 (o2) 和不透明16 (o16) 基因可增强玉米核中的氨酸和氨酸含量.
关于O2,O16和O2O16玉米基因型中质量属性和种子形态的发育过渡的研究有限.

研究的目的:

调查O2和O16基因在调节必需氨基酸 (氨酸和氨酸) 和玉米核发育过程中玉米核不透明性的作用.
分析 lysine 和 tryptophan 的积累模式,以及在不同发育阶段 (15,30 和 45 天授粉后) 发生核不透明的情况.

主要方法:

在基于O2,O16和O2O16的玉米杂交系中分析氨酸和氨酸的积累和核的不透明度.
在三个关键的发育阶段进行评估:授粉后15,30和45天 (DAP).

主要成果:

与单独使用o2 (lysine 0.48%, tryptophan 0.18%) 和o16 (lysine 0.46%, tryptophan 0.17%) 相比,o2o16基因型表现出显著更高的氨酸 (0.64%) 和氨酸 (0.25%).
在所有分析的基因型中,氨基酸积累和内核不透明度都在各个发展阶段 (15至45 DAP) 呈现下降趋势.
在氨酸和氨酸 (r=0.95) 之间,以及每个氨基酸和核不透明度 (r=0.60) 之间发现了正相关性.
野生种类中的硬内和o16与o2和o2o16相比,被归因于具有较高蛋白质基质的紧型粉粒.

结论:

这项研究提供了第一个关于玉米核发育过程中的营养质量和不透明性动态的综合报告,其中包括基于O2,O16和O2O16的基因型.
这些发现强调了O2和O16基因组合在整个发育过程中对必需氨基酸含量和核特征的重大影响.

关键词:

重要的氨基酸是必不可少的.核心的修改是核心的修改.修改器修改器是一个修改器.蛋白质质量的质量蛋白质质量在QPM中,QPM是QPM.

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