比较解剖学和转录学揭示了较大的细胞大小是杏仁水果大小的主要贡献者
Mengzhen Huang1,2,3,4, Xuchun Zhu1,3,4, Haikun Bai1,3,4
1State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China.
International journal of molecular sciences
|May 27, 2023
概括
杏仁果的大小差异主要是由于细胞大小的变化. 调节辅酶信号和细胞壁扩张的关键基因被确定为控制杏仁大小的关键基因,有助于未来的育种工作.
科学领域:
- 植物科学 植物科学
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 果实大小是影响杏仁经济价值的关键特征.
- 了解果实大小变化的遗传和分子基础对于作物改进至关重要.
研究的目的:
- 为了研究底层的分子机制水果大小差异在杏仁品种.
- 确定调节细胞大小和果实发育的关键基因和途径.
主要方法:
- 在水果发育过程中对解剖学和转录学动态的比较分析.
- 差异基因表达分析和权重基因同表达网络分析 (WGCNA).
主要成果:
- 果实大小的差异主要归因于大 ("Sungold") 和小 ("F43") 杏仁品种之间的细胞大小的变化.
- 在细胞扩张期间观察到显著的转录差异,特别是在辅酶信号传递和细胞壁松途径.
- 一个枢纽基因,PRE6/bHLH,和其他13个候选基因被确定为杏仁水果大小的积极调节者.
结论:
- 细胞大小是杏仁果实大小的主要决定因素.
- 参与auxin反应和细胞壁修饰的特定基因在调节杏仁果子大小方面发挥着至关重要的作用.
- 这些发现为标记器辅助的选择和更大的杏仁品种的育种提供了基础.
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