Molecular phylogeny and divergence times of Astragalus section Hymenostegis: An analysis of a rapidly diversifying species group in Fabaceae.
Molecular phylogeny and divergence times of Astragalus section Hymenostegis: An analysis of a rapidly diversifying species group in Fabaceae.
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DOI：
10.1038/s41598-017-14614-3
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发表时间：
2017-10-25
影响因子：
4.6
通讯作者：
Blattner FR
中科院分区：
文献类型：
--
作者：
Bagheri A;Maassoumi AA;Rahiminejad MR;Brassac J;Blattner FR
黄芪群是西南亚山地和草原生境的重要组成部分。通过对106种303个个体的核糖体DNA内转录间隔区（ITS）和质体ycf1序列的分析，得到了膜骨组的系统发育假说，其中包括目前归属于膜骨组的89个分类群、其他黄苑科的14个分类群以及2种棘豆属和1种双叶藻属的外群。贝叶斯系统发育推断和简约性分析表明，来自另外两个密切相关的部门的三个物种在膜骨组中分组，使该部门成为副属。膜骨生物类群的DNA序列多样性总体上很低，这与近年来剖面的多样化是一致的。我们估计Hymenostegis组的多样化发生在更新世中期至晚期，许多物种仅在过去的100万年中出现，当时西南和中亚山区的环境条件在干燥和湿润条件之间反复循环。
The taxa of Astragalus section Hymenostegis are an important element of mountainous and steppe habitats in Southwest Asia. A phylogenetic hypothesis of sect. Hymenostegis has been obtained from nuclear ribosomal DNA internal transcribed spacer (ITS) and plastid ycf1 sequences of up to 303 individuals from 106 species, including all 89 taxa currently assigned to sect. Hymenostegis, 14 species of other Astragalus sections, and two species of Oxytropis and one Biserrula designated as outgroups. Bayesian phylogenetic inference and parsimony analyses reveal that three species from two other closely related sections group within sect. Hymenostegis, making the section paraphyletic. DNA sequence diversity is generally very low among Hymenostegis taxa, which is consistent with recent diversification of the section. We estimate that diversification in sect. Hymenostegis occurred in the middle to late Pleistocene, with many species arising only during the last one million years, when environmental conditions in the mountain regions of Southwest and Central Asia cycled repeatedly between dry and more humid conditions.
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DOI：
10.1111/j.1096-0031.1996.tb00196.x
发表时间：
1994-09-01
期刊：
CLADISTICS-THE INTERNATIONAL JOURNAL OF THE WILLI HENNIG SOCIETY
影响因子：
--
作者：
FARRIS, JS;KALLERSJO, M;BULT, C
通讯作者：
BULT, C
影响因子：
6.5
作者：
Brassac J;Blattner FR
通讯作者：
Blattner FR
影响因子：
0.9
作者：
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通讯作者：
Blattner, Frank R.
影响因子：
3.7
作者：
Bagheri, Ali;Maassoumi, Ali Asghar;Blattner, Frank R.
通讯作者：
Blattner, Frank R.
DOI：
10.1111/j.1095-8312.2007.00907.x
发表时间：
2008-03-01
影响因子：
1.9
作者：
Catalano, Santiago Andres;Vilardi, Juan Cesar;Saidman, Beatriz Ofelia
通讯作者：
Saidman, Beatriz Ofelia