Multiple lines of evidence supports the two varieties of Halenia elliptica (Gentianaceae) as two species

	Multiple lines of evidence supports the two varieties of Halenia elliptica (Gentianaceae) as two species
	Wu, JF; Jia, DR; Liu, RJ; Zhou, ZL; Wang, LL; Chen, MY; Meng, LH; Duan, YW
刊名	PLANT DIVERSITY
	2022
卷号	44 期号:3 页码:290
英文摘要	Delimiting species requires multiple sources of evidence. Here, we delimited two varieties of Halenia elliptica (Gentianaceae) using several lines of evidence, including morphological traits and mating system in a sympatric population, phylogenetic relationships based on nrITS and cpDNA (rpl16) data, and complete chloroplast genome sequences. Comparative analysis of 21 morphological traits clearly separates the two varieties of H. elliptica. Examination of the flowering process and pollination treatments indicate that H. elliptica var. grandiflora produces seeds via outcrossing, whereas H. elliptica var. elliptica produces seeds via mixed mating. Furthermore, hand-pollinated hybridization of the two varieties produced no seeds. Observations of pollinators showed that when bees began a pollination bout on H. elliptica var. grandiflora they preferred to continue pollinating this variety; however, when they began a pollination bout on H. elliptica var. elliptica, they showed no preference for either variety. Phylogenetic analysis confirmed the monophyly of H. elliptica, which was further divided into two monophyletic clades corresponding to the two varieties. A large number of variants from the chloroplast genomes reflected remarkable genetic dissimilarities between the two varieties of H. elliptica. We recommend that the two varieties of H. elliptica should be revised as two species (H. elliptica and H. grandiflora). Our findings indicate that H. elliptica varieties may have split into two separate species due to a shift in mating system, changes in flowering phenology and/or post-pollination reproductive isolation. Copyright (c) 2021 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/61229]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Wu, JF,Jia, DR,Liu, RJ,et al. Multiple lines of evidence supports the two varieties of Halenia elliptica (Gentianaceae) as two species[J]. PLANT DIVERSITY,2022,44(3):290.
APA	Wu, JF.,Jia, DR.,Liu, RJ.,Zhou, ZL.,Wang, LL.,...&Duan, YW.(2022).Multiple lines of evidence supports the two varieties of Halenia elliptica (Gentianaceae) as two species.PLANT DIVERSITY,44(3),290.
MLA	Wu, JF,et al."Multiple lines of evidence supports the two varieties of Halenia elliptica (Gentianaceae) as two species".PLANT DIVERSITY 44.3(2022):290.