Does reproductive isolation reflect the segregation of color forms in Spiranthes sinensis (Pers.) Ames complex (Orchidaceae) in the Chinese Himalayas?
Tao, Zhi-Bin1,2; Ren, Zong-Xin1; Bernhardt, Peter3; Liang, Huan1,2; Li, Hai-Dong1; Zhao, Yan-Hui1; Wang, Hong1; Li, De-Zhu4
2018-06-01
Source PublicationECOLOGY AND EVOLUTION
ISSN2045-7758
Volume8Issue:11Pages:5455-5469
Abstract

Isolation between species, or taxa sharing a common lineage, depends primarily on the relative strengths of various reproductive barriers. Previous studies on reproductive isolation between orchids emphasized mechanical and ethological barriers in flowers of species showing food and/or sexual mimicry. In this study, we investigated and quantified a series of prepollination and postpollination barriers between pink and white forms of Spiranthes sinensis sl, a nectar-secreting complex. We generated ML trees based on trnS-G and matK to explore phylogenetic relationships in this species complex. Spiranthes sinensis sl segregated from some other congeners, but the white form constituted a distinct clade in relation to the pink form. The white form secreted 2-Phenylethanol as it is a single-scent compound and was pollinated almost exclusively by native, large-bodied Apis cerana and Bombus species (Apidae). Apis cerana showed a high floral constancy to this form. The scentless, pink form was pollinated primarily by smaller bees in the genera Ceratina (Apidae), and members of the family Halictidae, with infrequent visits by A.cerana and Bombus species. Fruit set and the production of large embryos following interform pollination treatments were significantly lower compared to intraform pollination results for the white form. Our results suggested that pollinator isolation, based on color and scent cues, may result in greater floral constancy in white populations when both forms are sympatric as two different, guilds of pollinators forage selectively preventing or reducing prospective gene flow. Postpollination barriers appear weaker than prepollination barriers but they also play a role in interform isolation, especially in the white form. Our findings suggest that floral color forms in S.sinensis do not represent an unbalanced polymorphism. Interpretations of the evolutionary status of these forms are discussed.

KeywordBee Pollinators Floral Color Floral Scent Phylogenetics Reproductive Isolation Spiranthes Sinensis
DOI10.1002/ece3.4067
WOS IDWOS:000435776600022
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/61412
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, Kunming, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Kunming Coll Life Sci, Kunming, Yunnan, Peoples R China
3.St Louis Univ, Dept Biol, St Louis, MO 63103 USA
4.Chinese Acad Sci, Germplasm Bank Wild Species, Kunming Inst Bot, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Tao, Zhi-Bin,Ren, Zong-Xin,Bernhardt, Peter,et al. Does reproductive isolation reflect the segregation of color forms in Spiranthes sinensis (Pers.) Ames complex (Orchidaceae) in the Chinese Himalayas?[J]. ECOLOGY AND EVOLUTION,2018,8(11):5455-5469.
APA Tao, Zhi-Bin.,Ren, Zong-Xin.,Bernhardt, Peter.,Liang, Huan.,Li, Hai-Dong.,...&Li, De-Zhu.(2018).Does reproductive isolation reflect the segregation of color forms in Spiranthes sinensis (Pers.) Ames complex (Orchidaceae) in the Chinese Himalayas?.ECOLOGY AND EVOLUTION,8(11),5455-5469.
MLA Tao, Zhi-Bin,et al."Does reproductive isolation reflect the segregation of color forms in Spiranthes sinensis (Pers.) Ames complex (Orchidaceae) in the Chinese Himalayas?".ECOLOGY AND EVOLUTION 8.11(2018):5455-5469.
Files in This Item: Download All
File Name/Size DocType Version Access License
64.pdf(1219KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tao, Zhi-Bin]'s Articles
[Ren, Zong-Xin]'s Articles
[Bernhardt, Peter]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tao, Zhi-Bin]'s Articles
[Ren, Zong-Xin]'s Articles
[Bernhardt, Peter]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tao, Zhi-Bin]'s Articles
[Ren, Zong-Xin]'s Articles
[Bernhardt, Peter]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 64.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.