与MYB相关的转录因子ZmMYBR29参与了谷物填充
Jia Wen Wu1, Xiao Yi Wang1, Ru Yu Yan1
1State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, China.
BMC plant biology
|May 26, 2024
概括
玉米基底内精转移层 (BETL) 中的一种转录因子ZmMYBR29,对核发育至关重要. 它的缺失会损害谷物填充,并通过影响营养物质运输来降低谷粒重量.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 农业科学 农业科学
背景情况:
- 胚芽为玉米核的发育提供营养.
- 基底内精转移层 (BETL) 转移细胞 (TCs) 对于营养物质的运输和防御至关重要.
- BETL发育的分子机制尚未完全理解.
研究的目的:
- 为了研究ZmMYBR29在玉米核发育中的作用.
- 阐明ZmMYBR29在基底内精转移层 (BETL) 中的功能.
主要方法:
- 在现场杂交分析ZmMYBR29表达式.
- 通过CRISPR/Cas9基因编辑,创建一个zmmybr29功能丧失突变体.
- 核心形态和细胞壁内生长的组织学分析.
- RNA测序 (RNA-seq) 用于分析基因表达变化.
主要成果:
- ZmMYBR29在基底内精中得到特定的表达.
- zmmybr29突变体表现出较小的内核大小和异常的BETL形态.
- 在突变者中,谷物填充率下降了26.7%,影响了谷粒重量.
- 参与粉合成和碳水化合物代谢的基因在突变者中被下调.
结论:
- ZmMYBR29是一种与MYB相关的转录因子,对玉米核发育至关重要.
- ZmMYBR29通过影响谷物填充率和营养物质运输来调节谷粒重量.
- 这项研究提供了对玉米内发育分子调节网络的见解.
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