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基于系统发育和形态学证据，从（闭鞘姜科）中分离出的一个新属。

, a new genus segregated from (Costaceae) based on phylogenetic and morphological evidence.

作者信息

Chen Juan, Zeng Sijin, Zeng Linya, Nguyen Khang Sinh, Yan Jiawei, Liu Hua, Xia Nianhe

机构信息

Guangdong Provincial Key Laboratory of Applied Botany/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, People's Republic of China.

Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam.

出版信息

Plant Divers. 2022 Mar 8;44(4):389-405. doi: 10.1016/j.pld.2022.02.001. eCollection 2022 Jul.

DOI:10.1016/j.pld.2022.02.001
PMID:35967252
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9363654/
Abstract

Previous studies recognized three major lineages of the family Costaceae: a South American clade, an Asian clade and a clade. However, the genus within the Asian clade has been shown to be non-monophyletic and its morphology has not been studied carefully. Therefore, the complete plastid genomes of species were obtained and the monophyly of was tested through four different datasets in this study. Plastid phylogenomic analyses of Costaceae revealed that is strongly supported as paraphyletic. Two major clades are recovered, namely the subclade and the subclade. Phylogenetic analyses based on an enlarged taxon sampling of the Asian clade using a two chloroplast markers dataset (K intron and L-F spacer) confirmed the paraphyly of . Meanwhile, morphological analyses suggested that members of the subclade differ from the remaining species in many characters including inflorescences, bracts, stigma, axillary buds, floral tubes and labellum. According to the present molecular and morphological evidence, the latter subclade is recognized as a new genus, . Two new species are described, four new combinations are made, and identification keys are also provided.

摘要

以往的研究识别出闭鞘姜科的三个主要谱系

一个南美洲分支、一个亚洲分支和一个分支。然而，亚洲分支内的[属名]属已被证明并非单系类群，且其形态尚未得到仔细研究。因此，本研究获得了[物种名]物种的完整质体基因组，并通过四个不同的数据集对[属名]属的单系性进行了检验。闭鞘姜科的质体系统发育基因组分析表明，[属名]属被强烈支持为并系类群。恢复了两个主要分支，即[分支名1]亚分支和[分支名2]亚分支。基于使用两个叶绿体标记数据集（K内含子和L-F间隔区）对亚洲分支进行的扩大分类群抽样的系统发育分析证实了[属名]属的并系性。同时，形态学分析表明，[分支名1]亚分支的成员在包括花序、苞片、柱头、腋芽、花管和唇瓣在内的许多特征上与其余[物种数量]个物种不同。根据目前的分子和形态学证据，后一个亚分支被确认为一个新属，即[新属名]属。描述了两个新物种，进行了四个新组合，并提供了鉴定检索表。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/295463543f55/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/ab86f40c3a88/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/dd297fda623d/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/346dc2d47a0d/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/f894045ad587/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/d709391e4658/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/10554c097f35/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/3d0f6736f643/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/a4ceadce09ab/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/deac540bacd4/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/295463543f55/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/ab86f40c3a88/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/dd297fda623d/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/346dc2d47a0d/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/f894045ad587/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/d709391e4658/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/10554c097f35/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/3d0f6736f643/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/a4ceadce09ab/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/deac540bacd4/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0259/9363654/295463543f55/gr10.jpg

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