一般微生物的筛选和开发流程（PLoSOne中科院辰山中心严岳鸿研究组发表里白科分子系统学研究进展）

一般微生物的筛选和开发流程（PLoSOne中科院辰山中心严岳鸿研究组发表里白科分子系统学研究进展）Because synonymy treatment traditionally relies on morphological judgments it usually causes many problems in species delimitation and in the biodiversity catalogue. For example Diplopterygium simulans which belongs to the Gleicheniaceae family has been considered to be synonymous with D. glaucum or D. giganteum based mainly on the morphology of its pinna rachis and blade. In the absence of mol

2017年3月15日，国际知名学术期刊《PLOS genetics》杂志在线发表了中国科学院上海生命科学研究院辰山中心植物系统与进化研究组严岳鸿研究组题为“Re-establishment of species from synonymies based on DNA barcoding and phylogenetic analysis using Diplopterygium simulans (Gleicheniaceae) as an example”的研究论文，论文报道了在里白科分子系统学研究进展。

全世界已接受植物种类大约35万种，但是过去发表的约47万种植物，因被认为是重复发表而被丢进历史和故纸堆了，还有约24万种植物不知真假对错。传统上，异名处理主要是基于形态学性状的差异来判断是否为所谓的“好种”，因此在生物多样性编目和物种鉴定过程中通常会出现很多问题。例如 ，隶属于里白科里白属的海南里白，分类学家基于叶片和羽轴的形态将其处理为里白或大里白的异名。然而由于缺少分子证据，这些修订仍然存在争议。

上海辰山植物园(中国科学院上海辰山植物科学研究中心)蕨类植物多样性与进化课题组和深圳仙湖植物园、中国科学院华南植物园、印度尼西亚巴厘植物园合作，通过对中国及印度尼西亚等地的里白属植物进行DNA条形码分析，结果显示海南里白是一个独立物种，而不应处理为里白或大里白的异名。而且， 综合系统发育分析、地理分布和形态特征等研究，发现海南里白不仅作为一个好种与广东里白是姐妹类群，而且还广泛分布于云南、海南和印度尼西亚等多个地区。本研究为异名处理的验证和隐存种的发现提供了一个方便而有效的方法。

DNA条形码分析

系统发育分析、形态差异分析和地理分布

原文链接：

Re-establishment of species from synonymies based on DNA barcoding and phylogeneticanalysis using Diplopterygium simulans (Gleicheniaceae) as an example

原文摘要：

Because synonymy treatment traditionally relies on morphological judgments it usually causes many problems in species delimitation and in the biodiversity catalogue. For example Diplopterygium simulans which belongs to the Gleicheniaceae family has been considered to be synonymous with D. glaucum or D. giganteum based mainly on the morphology of its pinna rachis and blade. In the absence of molecularevidence these revisions remain doubtful. DNA barcoding which is considered to be a powerful method for species-level identification was employed to assess the genetic distance among 9 members of the Diplopterygium genus. The results indicate that D. simulans is an independent species rather than a synonymy of D.glaucum or D. giganteum. Moreover phylogenetic analysis uncovered the sisterhood of D.simulans and D. cantonense which is supported by their geographical distributions and morphological traits. Incorrect synonymy treatment is prevalent in the characterization of biological diversity and our study proposes a convenient and effective method for validating synonym treatments and discovering cryptic species.

作者：严岳鸿 点击：次