Hybridization of Bornean Melastoma: implications for conservation of endemic plants in Southeast Asia
Hybridization of Bornean Melastoma: implications for conservation of endemic plants in Southeast Asia
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DOI：
10.1080/23818107.2019.1585284
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发表时间：
2019-05-25
期刊：
影响因子：
1.5
通讯作者：
Zhou, Renchao
中科院分区：
文献类型：
--
作者：
Cai, Yacheng;Wang, Fei;Zhou, Renchao
杂交是自然界中普遍存在的现象，在生物进化、物种形成乃至灭绝中起着重要作用。在这项研究中，我们专注于两个物种的植物属Mexila，这已经经历了一个快速的物种辐射在过去的100万年。我们成功地检测到了M. malabathricum和M.通过对五个核基因和两个叶绿体片段的测序，研究了马来西亚婆罗洲疑似杂交区中的一个三叶草属植物。大多数疑似杂交种的个体被认为是第一代杂交种，而5个个体对应于先进的早期杂交种。虽然在M. malabathricum和M.因此，有必要对限制分布的物种进行灭绝风险评估，其中M.金叶子这项研究是东南亚地区的第一个自然杂交的案例，更多的案例正在等待在野外发现。
Hybridization has been found as a prevalent circumstance in nature, and it plays important roles in organismal evolution, speciation and even extinction. In this study, we focus on two species of the plant genus Melastoma, which has gone through a rapid species radiation during the last one million years. We successfully detected the hybridization signal between M. malabathricum and M. laevifolium in a suspected hybrid zone in Borneo, Malaysia, by sequencing five nuclear genes and two chloroplast fragments. Most individuals of the suspected hybrids were considered as first generation hybrids, while five individuals corresponded to advanced, early generations of hybrids. Although we did not find any introgression signal between M. malabathricum and M. laevifolium, it is necessary to pay more attention to assess the extinction risk of the species with restricted distribution, here M. laevifolium. This study is the first case of natural hybridization between Melastoma species in Southeast Asia, and more cases are waiting to be found in the field.