波赫梅里亚 (科) 的多重性与塑体结构变异一致
Min Zhan1, Ling Xue1, Jian-Jun Zhou2
1College of Forestry, Central South University of Forestry and Technology, Changsha, China.
Frontiers in plant science
|August 14, 2024
概括
质体结构变异,包括基因丢失和逆转,澄清了具有挑战性的Bohmeria属及其亲属中的进化关系. 这些变化也可能反映出适应不同息地的情况.
科学领域:
- 植物进化生物学 植物进化生物学
- 分子进化是分子进化的过程.
- 人类基因组学是什么?
背景情况:
- 科 (Urticaceae) 的 *Boehmeria* 属面临着由于多重性和形态同型性而带来的分类学挑战.
- 质体结构变异越来越被认为是解决植物进化关系的有价值标记.
研究的目的:
- 调查塑体结构变化的有用性,以解决 * Boehmeria * 和相似的基系.
- 为了重建波希米亚岛的进化历史. 通过结合来自相关基因的新塑体数据.
主要方法:
- 使用来自 * Boehmeria * 和相关属的塑体序列进行了家族基因组分析,包括首次采集 * Cypholophus * * Sarcochlamys * * Archiboehmeria * * 和 * Astrothalamus * * 的样本.
- 将塑体结构变异的映射,例如基因丢失/重复和反向重复 (IR) 动态,映射到家族遗传树上.
主要成果:
- 遗传学分析强烈支持*sarcochlamys*与*leucosyke puya*比与*bohmeria*更为密切相关.
- 这种属性是 *Boehmeria* s.l.l. 被分为四个不同的亚分类,早期分离的分类显示保存的塑料体,后来分离的分类表现出更大的结构变异.
- 观察到的变异包括基因丢失/重复,红外收缩/扩张和逆转,大小从142,627bp到170,958bp.
结论:
- 质体结构变异是重建*Bohmeria* s.l.进化历史的有效特征.
- 观察到的塑体变异可能与*Boehmeria* s.l.的适应有关. 在不同的环境中,从潮湿的森林到干旱的沙漠.
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