Phylogenetic relationships between Hystrix and its closely related genera (Triticeae; Poaceae) based on nuclear Acc1, DMC1 and chloroplast trnL-F sequences.
Phylogenetic relationships between Hystrix and its closely related genera (Triticeae; Poaceae) based on nuclear Acc1, DMC1 and chloroplast trnL-F sequences.
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DOI：
10.1016/j.ympev.2009.05.005
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发表时间：
2010-02
影响因子：
4.1
通讯作者：
L. Sha;Xing Fan;Ruiwu Yang;Houyang Kang;C. Ding;Li Zhang;Youliang Zheng;Yonghong Zhou
中科院分区：
文献类型：
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作者：
L. Sha;Xing Fan;Ruiwu Yang;Houyang Kang;C. Ding;Li Zhang;Youliang Zheng;Yonghong Zhou
为了估计小麦科多倍体 Hystrix 的系统发育关系，我们对 6 个 Hystrix 类群的两个单拷贝核基因（Acc1 和 DMC1）和叶绿体 trnL-F 序列与来自 7 个单基因属的 9 个羊草属 (NsXm)、4 个披碱草属 (StH) 和 13 个二倍体类群进行了分析。系统发育分析表明，尽管 Hystrix 类群在形态和生态上具有相似性，但 Hystrix 类群包含两种不同类型的基因组构成。基因组构成的一种类型是作为披碱草的StH (Hy. patula)，另一种是作为赖草的NsXm (Hy. californica、Hy. coreana、Hy. duthiei、Hy. duthiei ssp. longearistata 和Hy. komarovii)。 Hystrix 中的 St、H 和 Ns 基因组分别由 Pseudoroegneria、Hordeum 和 Psathyrostachys 捐赠。 Xm基因组的供体与冰草(P)密切相关。 trnL-F数据特别表明Hystrix物种中存在母本单倍型多态性。基于这些结果，我们建议 Hy。科雷阿纳，Hy.杜蒂埃，Hy.杜蒂埃岛长耳斯塔，Hy。科马罗维和Hy。 californica 应该包括在羊草属和 Hy 属中。孔雀草属披碱草属。
To estimate the phylogenetic relationship of polyploid Hystrix in Triticeae, two single-copy nuclear genes (Acc1 and DMC1) and chloroplast trnL-F sequences of six Hystrix taxa were analyzed with those of nine Leymus species (NsXm), four Elymus species (StH) and 13 diploid taxa from seven monogenomic genera. Phylogenetic analyses reveal that Hystrix taxa contain two distinct types of genome constitution, despite the overall morphological and ecological similarity among Hystrix taxa. One type of genome constitution is StH (Hy. patula) as Elymus, the other is NsXm (Hy. californica, Hy. coreana, Hy. duthiei, Hy. duthiei ssp. longearistata and Hy. komarovii) as Leymus. The St, H and Ns genomes in Hystrix are donated by Pseudoroegneria, Hordeum and Psathyrostachys, respectively. The donor of the Xm genome is closely related to Agropyron (P). The trnL-F data especially indicate that there has been a maternal haplotype polymorphism in Hystrix species. Based on these results, we suggest that Hy. coreana, Hy. duthiei, Hy. duthiei ssp. longearistata, Hy. komarovii and Hy. californica should be included in the genus Leymus, and Hy. patula in the genus Elymus.