期刊
PLANT DIVERSITY
卷 43, 期 4, 页码 292-298出版社
KEAI PUBLISHING LTD
DOI: 10.1016/j.pld.2021.04.003
关键词
Rhododendron; New species; RAD-seq; Phylogenetic position
资金
- National Natural Science Foundation of China [31770418, 31760231]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [2018428]
- Reserve Talents for Academic and Technical Leaders of Middle-aged and Young People in Yunnan Province [2018HB066]
A new species of Rhododendron, Rhododendron kuomeianum, from Yiliang County, NE Yunnan, China is described and illustrated. Phylogenomic studies confirmed its relationship with other species and highlighted the utility of next-generation sequencing in resolving taxonomic problems in plants.
Rhododendron kuomeianum Y.H. Chang, J. Nielsen & Y.P. Ma, a new species of Rhododendron (Ericaceae) within subsect. Maddenia in sect. Rhododendron from Yiliang County, NE Yunnan, China, is described and illustrated. The new species is similar to R. valentinianum, but it can be easily distinguished by its sparse scales on the abaxial surface of the leaf blade, fewer flowers per inflorescence and white corolla with pale red margins. There are also differences in the widths of calyx lobes, leaf blade shape and indumentum characteristics of the petiole between the new species and Rhododendron linearilobum. We confirmed that R. kuomeianum is a new species closely related to R. valentinianum and R. changii with phylogenomic studies of 10 species within this subsection based on restriction site-associated DNA sequencing (RADseq) data. These phylogenomic analyses also clarified additional taxonomic problems in this subsection previously raised by morphological analysis. Our findings make a strong case for using next-generation sequencing to explore phylogenetic relationships and identify new species, especially in plants groups with complicated taxonomic problems. Copyright (C) 2021 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
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