乌尔维利亚 (Paullinieae,Sapindaceae) 的分子基因组及其对干血管多样性的影响
Israel L Cunha Neto1, Yanã C Rizzieri1, Pablo A Cabanillas2
1School of Integrative Plant Sciences and L. H. Bailey Hortorium, Cornell University, Ithaca, NY 14853, USA.
Annals of botany
|July 10, 2023
概括
小型的Urvillea属表现出显著的茎血管多样性,有五种不同的本体,包括独特的裂纹茎. 这种多样性凸显了Paullinieae lianas.中的的发育可塑性.
科学领域:
- 植物解剖学 植物解剖学
- 进化生物学是进化的生物学.
- 人类遗传学 是一个学科.
背景情况:
- 在Paullinieae部落的种子植物中显示了广泛的血管变异多样性.
- 在Paullinieae中较小的属,如Urvillea,在它们的血管发育和原生学方面没有得到充分的研究.
- 了解Urvillea的干血管系统进化对于理解Paullinieae.ae的多样性至关重要.
研究的目的:
- 为了研究Urvillea.a.属的干血管发育的进化.
- 建立Urvillea的分子系谱及其与其他Paullinieae属的关系.
- 描述Urvillea.内茎本体和血管变异的多样性.
主要方法:
- 通过最大概率和贝叶斯分析,使用11个遗传标记生成了Urvillea的分子系谱.
- 分析了来自田间,草本馆和木材收藏的茎发育解剖学.
- 采用随机的特征映射来追踪干细胞生长过程中的进化变化.
主要成果:
- 乌尔维利亚形成了一个单体群,是塞尔贾尼亚的姐妹.
- 确定了五种茎本体,包括典型生长和四种变体;二次生长中的叶片茎是祖先的,但经常丢失.
- 浮膜,裂变的茎和异胎变形独立进化,裂变的茎是Urvillea.独特的.
结论:
- 乌维利亚是Paullinieae的第三个血管多样性最多的属.
- 不同的变形活动和异位变形是Urvillea茎多样性的关键驱动因素.
- 这项研究揭示了显著的发育可塑性和Paullinieae lianas中复杂的干部解剖学的重复演变.
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