生物
突变体
单系
克莱德
属
部落
兰科
性格演变
进化生物学
分子系统发育学
植物
系统发育树
人类学
生物化学
基因
社会学
作者
Wei‐Chang Huang,Zhong‐Jian Liu,Kai Jiang,Yi‐Bo Luo,Xiaohua Jin,Ze Zhang,Ru-hua Xu,John K. Muchuku,Stanely S Musungwa,Tomohisa Yukawa,Wei Wang,Xinhua Zeng,Huiming Zhang,Youming Cai,Chao Hu,Siren Lan
标识
DOI:10.1016/j.ympev.2021.107362
摘要
Delimitation of the tribe Arethuseae has varied considerably since it was first defined. The relationships within Arethuseae, particularly within the subtribe Arethusinae, remain poorly elucidated. In this study, we reconstructed the phylogeny of Arethuseae, using six plastid markers (matK, ycf1, rbcL rpoc1, rpl32-trnL and trnL-F) from 83 taxa. The ancestral state reconstruction of 11 selected morphological characters was also conducted to identify synapomorphies and assess potential evolutionary transitions. Morphological character comparision between the distinct species Bletilla foliosa and other species are conducted. Our results unequivocally supported the monophyly of Arethuseae, which included highly supported clades and a clear synapomorphy of non-trichome-like lamellae. Furthermore, B. foliosa formed a separate clade in the subtribe Arethusinae, instead of clustering with the other Bletilla species in the subtribe Coelogyninae. The morphological characters comparision further showed that the B. foliosa clade could be distinguished from other genera in Arethuseae by multiple characters, including presence of lateral inflorescence, three lamellae with trichome-like apex and four pollinia. In light of these molecular and morphological evidences, we propose Mengzia as a new genus to accommodate B. foliosa and accordingly provide descriptions of this new genus and combination.
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