A new species in the genus Nomocharis Franchet (Liliaceae): evidence that brings the genus Nomocharis into Lilium
A new species in the genus Nomocharis Franchet (Liliaceae): evidence that brings the genus Nomocharis into Lilium
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DOI：
10.1007/s00606-011-0524-1
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发表时间：
2012-01-01
影响因子：
1.9
通讯作者：
Wan, Juan
中科院分区：
文献类型：
--
作者：
Gao, Yun-Dong;Hohenegger, Markus;Wan, Juan
野马蹄（Nomocharis aperta（Franchet）E.威尔逊是一个异质种，包括形态型与粉红色花被片轴承sedimentary在内花被片的基部中央通道两侧和那些黄色花被片缺乏sedimentary。nrITS和叶绿体psbA-trnH的分子系统发育和成对距离分析支持识别黄花的形态型缺乏蜜腺过程作为一个新的，单独的种Nomocharis。本文报道了中国植物志上的一个新种：贡山野马蹄Nomocharis gongshanensis Y. D. Gao et X. J. He sp. nov.，并利用ITS和psbA-trnH标记解析了该基因在百合-野百合复合体中的系统位置。从N.贡山最大简约法和贝叶斯分析将克隆定位于两个不同的Nomocharis分支，N。aperta + N. saluenensis和Sect. Eunomocharis，表明该新种可能为杂种起源。psbA-trnH序列是N. gongshanensis与N. saluenensis，表明后者可能是母系祖先。我们的分析支持百合属的单系性和两属的并系性。Nomocharis在百合属中被认为是欧洲百合组Liriotypus的姐妹。在这项研究中恢复的12百合Nomocharis分支与以前的分子研究是一致的，但不符合传统的限制和百合属内的亚属划分。这些结果强调了百合属的分类修订，以适应Nomocharis和Nomocharis的起源和进化的重新思考的必要性。
Nomocharis aperta (Franchet) E. Wilson is a heterogeneous species including morphotypes with pink tepals bearing swellings on both sides of the inner tepal's basal median channel and those with yellow tepals lacking swellings. Molecular phylogenetic and pair-wise distance analyses of nrITS and chloroplast psbA-trnH support recognition of the yellow-flowered morphotype lacking nectary processes as a new, separate species of Nomocharis. Here, we present the new species, Nomocharis gongshanensis Y. D. Gao et X. J. He sp. nov., and resolve its systematic position in the Lilium-Nomocharis complex using the ITS and psbA-trnH markers. Seven variant copies of ITS were isolated from N. gongshanensis. Maximum parsimony and Bayesian analyses placed the clones in two different Nomocharis clades, N. aperta + N. saluenensis and sect. Eunomocharis, suggesting a putative hybrid origin of the new species. The psbA-trnH sequence of N. gongshanensis is identical to that of N. saluenensis, indicating that the latter may be the maternal ancestor. Our analyses support the monophyly of Lilium-Nomocharis and mutual paraphyly of the two genera. Nomocharis was resolved within Lilium as sister to the European lilies of sect. Liriotypus (sensu A degrees kinci). The 12 Lilium-Nomocharis clades recovered in this study are consistent with previous molecular studies but are incongruent with traditional circumscription of and subgeneric divisions within Lilium. These results highlight the need for taxonomic revision of Lilium to accommodate Nomocharis and reconsideration of the origin and evolution of Nomocharis.