Molecular, morphological, and morphometric evidence reveal a new, critically endangered rattlepod (Crotalaria, Fabaceae/Leguminosae, Papilionoideae) from tropical China

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-11 DOI:10.3897/phytokeys.242.122407

S. Rather, Sirilak Radbouchoom, Kaikai Wang, Yunxue Xiao, Hongmei Liu, Harald Schneider

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引用次数: 0

Abstract

Here, we describe a new species of Crotalaria L. discovered in Mengla County, Xishuangbanna Dai Autonomous Prefecture, Yunnan, China. The new species, Crotalaria menglaensis S.A.Rather, was confirmed by identifying diagnostic morphological characteristics, performing principal component analyses of phenotypic traits, and phylogenetic analyses based on nuclear ITS and plastid matK sequences. Phylogenetic analyses recovered the two accessions of the new species to be sister to C. bracteata Roxb. ex DC. In turn, these two species formed the sister clade to the two accessions of C. incana L. The morphometric analyses revealed that all three species were distinct, while the analyses of distinctive characters enabled unambiguous distinction of the new species by its growth habit, leaflets, flower structure and pod morphology. In contrast to the two related species, the new species is currently known only from ca. 100 mature individuals. Thus, this species is considered to be critically endangered.

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分子、形态和形态计量学证据揭示了中国热带地区一种新的、极度濒危的鼠尾草属植物（Crotalaria, Fabaceae/Leguminosae, Papilionoideae）。

本文描述了在中国云南省西双版纳傣族自治州勐腊县发现的一个新种Crotalaria L.。通过识别诊断形态特征、表型特征的主成分分析以及基于核ITS和质粒matK序列的系统发育分析，我们确认了这个新物种，即Crotalaria menglaensis S.A.Rather。系统发育分析表明，该新种的两个登录品系与 C. bracteata Roxb.形态分析表明，这三个物种都是独特的，而独特特征的分析则通过生长习性、小叶、花结构和荚果形态将新物种明确区分开来。与两个相关物种相比，新物种目前仅从约 100 个成熟个体中获知。因此，该物种被认为极度濒危。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.