Phylogenetic study of the endemic species Oxytropis almaatensis (Fabaceae) based on nuclear ribosomal DNA ITS sequences.
Phylogenetic study of the endemic species Oxytropis almaatensis (Fabaceae) based on nuclear ribosomal DNA ITS sequences.
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DOI：
10.1186/s12870-017-1128-x
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发表时间：
2017-11-14
影响因子：
5.3
通讯作者：
Abugalieva S
中科院分区：
文献类型：
--
作者：
Almerekova S;Mukhitdinov N;Abugalieva S
喜马拉雅棘豆是哈萨克斯坦外伊犁阿拉套山脉的一种稀有、狭窄的特有种。迄今为止，还没有关于O. Almaatensis进行。本分析的目的是评估O。almaatensis的核核糖体DNA内转录间隔区（ITS）的核苷酸序列的基础上，并评估该属内的物种的位置。O. almaatensis采集于外伊犁阿拉套山脉的邻近峡谷。对两个居群的O. almaatensis是相同的。系统发育分析表明，O. almaatensis在棘豆属中与O. glabra作为这些种形成一个单独的亚支。用9个形态性状对居群的表型变异进行了评价，并与O.光滑的建立了两个群体间性状的变异范围。O. almaatensis和O.花序梗长与叶长之比为光滑型。这是在O。almaatensis1.56，而O. glabra，是1.0。 本研究首次对稀有特有种O.阿尔马坦西斯。对两种O. almaatensis种群表现出高水平的表型变异。虽然与O. glabra，ITS系统发育将这些种归类为属内的一个亚支。本文的在线版本（10.1186/s12870-017-1128-x）包含补充材料，可供授权用户使用。
Oxytropis almaatensis Bajt. is a rare, narrow endemic species of the Trans-Ili Alatau mountains in Kazakhstan. Up to now, no studies regarding the taxonomy and variation of key morphological traits of O. almaatensis were undertaken. The purpose of this analysis was to evaluate phenotypic variation of O. almaatensis and assess the position of the species within the genus based on nucleotide sequences of the nuclear ribosomal DNA internal transcribed spacer (ITS) region. Two populations of O. almaatensis were collected in neighboring gorges of the Trans-Ili Alatau Mountains. The ITS sequences from the samples of two populations of O. almaatensis were identical. The phylogenetic analysis indicated that O. almaatensis is within Oxytropis genetically close to O. glabra as these species formed a separate subclade. The phenotypic variation of populations was assessed using nine morphological traits and compared to descriptions of O. glabra. The range of variation for the traits between two populations was established. A clear morphological difference of O. almaatensis and O. glabra was found in peduncle length to leaf length ratio. This was in O. almaatensis 1.56, while in O. glabra, it was 1.0. The study provides the first phenotypic description and phylogenetic placement of the rare endemic species O. almaatensis. The morphological traits in two O. almaatensis populations showed a high level of phenotypic variability. Although clearly different from O. glabra, the ITS phylogeny grouped these species in a subclade within the genus. The online version of this article (10.1186/s12870-017-1128-x) contains supplementary material, which is available to authorized users.
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影响因子：
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DOI：
10.1073/pnas.0503123102
发表时间：
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