Molecular evidence for the inclusion of the Korean endemic genus "Echinosophora" in Sophora (Fabaceae), and embryological features of the genus
Molecular evidence for the inclusion of the Korean endemic genus "Echinosophora" in Sophora (Fabaceae), and embryological features of the genus
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DOI：
10.1007/s10265-004-0150-x
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发表时间：
2004-06-01
影响因子：
2.8
通讯作者：
Heo, K
中科院分区：
文献类型：
--
作者：
Lee, WK;Tokuoka, T;Heo, K
棘豆属(Echinosophora Nakai)是豆科(Fabaceae)豆科(Papillionoideae)的一个单型特有属，但它是否与苦参属(Sophora)相区别或合并，一直存在争议。为了解决这个问题，我们利用叶绿体rbcL基因和trnL(UAA)内含子的核苷酸序列数据进行了分子系统发育分析。简约分析表明，虽然苦参亚科的53个分类单元(包括苦参[Nakai]Nakai和苦参属及相关属的几个种)被划分为两个分支，但朝鲜苦参与该属模式种和苦参亚科的20个分类单元形成了一个共同的分支。因此，应将E.koreensis视为S.koreensis Nakai，并取消棘尾目的属名。我们还对朝鲜乳杆菌和黄色乳杆菌的胚胎学进行了研究，发现它们之间没有差异。我们的分子研究，像其他研究一样，强烈地表明苦豆目是多系的。在这项研究中，我们总结了核心苦参的胚胎学特征，以便将来与相关和不相关的分类群进行关键比较。
Although Echinosophora Nakai has been known as a monotypic and endemic genus of Papillionoideae of Fabaceae in Korea, it has been controversial whether it is distinct from or merged with Sophora. To resolve this matter, we conducted molecular phylogenetic analyses using nucleotide sequence data from the plastid rbcL gene and trnL (UAA) intron. Parsimony analysis, using a total of 53 taxa of the Papillionoideae (including E. koreensis [Nakai] Nakai and several species of Sophora and related genera) and using 20 taxa of Caesalpinioideae and Mimosoideae as outgroups, showed that, although the examined species of Sophora are split into two clades, E. koreensis formed a common clade with S. tomentosa (the type species of the genus) and S. flavescens. E. koreensis therefore should be treated as S. koreensis Nakai, and the generic name Echinosophora be eliminated. We also investigated the embryology of S. koreensis (= E. koreensis) and S. flavescens and found that no differences existed between them. Our molecular study, like other studies, strongly suggested that Sophora is polyphyletic. In this study we presented a summary of embryological features of the core Sophora for future critical comparison with related and unrelated taxa.