氨酸/氨酸丰富的拼接因子PtoRSZ21中的罕见变异调节口腔大小,以确定Populus的干旱耐受性
Rui Huang1,2,3, Zhuoying Jin1,2,3, Donghai Zhang1,2,3
1State Key Laboratory of Tree Genetics and Breeding, College of Biological Sciences and Technology, Beijing Forestry University, No. 35, Qinghua East Road, Beijing, 100083, China.
The New phytologist
|July 9, 2024
概括
罕见的变种显著影响植物特征,如口腔大小和Populus的干旱适应性. 在PtoRSZ21中有一种特定的罕见变异影响口腔特征和气候适应.
科学领域:
- 植物遗传学 植物遗传学
- 进化生物学是进化的生物学.
- 分子生物学分子生物学
背景情况:
- 罕见的变体有助于"遗传性缺失"在定量特征.
- 树木植物中罕见变异的全基因组特征和适应性作用在很大程度上是未知的.
研究的目的:
- 调查罕见变异对口腔形态和干旱适应性的影响.
- 探索不同Populus物种中罕见变异的分布和适应意义.
主要方法:
- 全基因组罕见变异关联研究 (RVAS)
- 表达式定量特征位置 (eQTL) 映射.
- 基因转换和分子实验
- 对五种Populus物种进行比较分析.
主要成果:
- 确定了75个与口腔大小 (SS) 和口腔密度 (SD) 相关的候选基因.
- 在与SS.密切相关的PtoRSZ21促销器中,一种罕见的单元型 (PtoRSZ21hap2) 与SS.密切相关.
- PtoRSZ21通过影响PtoATG2b的替代拼接 (AS) 来调节干旱耐受性.
- 该PtoRSZ21hap2类型影响PtoRSZ21表达和SS,与干旱/潮湿气候中的Populus分布相关.
结论:
- 稀有变种在Populus口腔形态和气候适应方面发挥着至关重要的作用.
- 通过替代拼接,PtoRSZ21作为干旱耐受性的关键调节器.
- 这些发现为繁殖耐旱Populus品种提供了潜在的目标.
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