绞股蓝属植物系统进化研究进展述评

绞股蓝属植物为典型的热带亚洲分布类型,中国是绞股蓝属的现代分布中心和多样化中心。绞股蓝属植物多倍体的系统进化研究表明,该属内广布物种绞股蓝多倍体种群经历了同源多倍化起源的过程。同时,形态学结合分子生物学证据的研究解决了绞股蓝属部分物种间的系统发育关系。分子标记研究结果表明,绞股蓝属植物具有低水平的群体遗传多样性和高水平的种群分化。另外,分子亲缘地理学研究表明,绞股蓝属植物发生了冰期后的种群范围扩张事件,气候波动和环境变迁可能驱使了该属植物的物种分化。本文从以上几方面进行研究述评,以期为绞股蓝属植物资源利用、保护和评价提供科学依据和理论基础。

A Review on Studies of Systematic Evolution of Gynostemma Bl.

Gynostemma Bl.(Cucurbitaceae) is widely distributed in the tropical Asia areas,and China is the central area of geographical distribution and diversification of Gynostemma Bl..The previously studies on systematic evolution of Gynostemma Bl.polyploids suggested that the populations of the widely distributed Gynostemma pentaphyllum have experienced the processes of auto-polyploidization.Meanwhile,the phylogenetic relationships of partial Gynostemma Bl.species were constructed inferred from the morphological and molecular evidences.The molecular marker results suggested that the Gynostemma Bl.species have the low level of genetic diversity and high level of population differentiation.In addition,the molecular phylogeography results showed that the populations of Gynostemma Bl.have experienced the post-glacial expansions,the climate oscillations and environmental changes might have forced on the species divergence of the Gynostemma Bl.This review mainly focused on the above mentioned aspects and aim is to provide the scientific evidence and theoretical basis for the resource utilization,conservation and assess of the Gynostemma Bl..