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Phylogenomic analysis reveals multiple evolutionary origins of selfing from outcrossing in a lineage of heterostylous plants

文献类型：期刊论文

作者Zhong, Li2,3; Barrett, Spencer C. H.4; Wang, Xin-Jia2,3; Wu, Zhi-Kun5; Sun, Hua-Ying3; Li, De-Zhu1; Wang, Hong3; Zhou, Wei1
刊名NEW PHYTOLOGIST
出版日期2019-11-01
卷号224期号:3页码:1290-1303
关键词floral evolution genetic diversity heterostyly homostyly mating systems phylogenomics Primula selfing
ISSN号0028-646X
DOI10.1111/nph.15905
通讯作者Wang, Hong(wanghong@mail.kib.ac.cn) ; Zhou, Wei(zhouwei@mail.kib.ac.cn)
英文摘要Evolutionary transitions from outcrossing to selfing often occur in heterostylous plants. Selfing homostyles originate within distylous populations and frequently evolve to become reproductively isolated species. We investigated this process in 10 species of Primula section Obconicolisteri using phylogenomic approaches and inferred how often homostyly originated from distyly and its consequences for population genetic diversity and floral trait evolution. We estimated phylogenetic relationships and reconstructed character evolution using the whole plastome comprised of 76 protein-coding genes. To investigate mating patterns and genetic diversity we screened 15 microsatellite loci in 40 populations. We compared floral traits among distylous and homostylous populations to determine how phenotypically differentiated homostyles were from their distylous ancestors. Section Obconicolisteri was monophyletic and we estimated multiple independent transitions from distyly to homostyly. High selfing rates characterised homostylous populations and this was associated with reduced genetic diversity. Flower size and pollen production were reduced in homostylous populations, but pollen size was significantly larger in some homostyles than in distylous morphs. Repeated transitions to selfing in section Obconicolisteri are likely to have been fostered by the complex montane environments that species occupy. Unsatisfactory pollinator service is likely to have promoted reproductive assurance in homostyles leading to subsequent population divergence through isolation.
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000491130900028
源URL[http://ir.kib.ac.cn/handle/151853/70913]  
专题昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者Wang, Hong; Zhou, Wei
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
4.Univ Toronto, Dept Ecol & Evolutionary Biol, Toronto, ON M5S 3B2, Canada
5.Guiyang Univ Tradit Chinese Med, Dept Pharm, Guiyang 550002, Guizhou, Peoples R China
推荐引用方式
GB/T 7714		 Zhong, Li,Barrett, Spencer C. H.,Wang, Xin-Jia,et al. Phylogenomic analysis reveals multiple evolutionary origins of selfing from outcrossing in a lineage of heterostylous plants[J]. NEW PHYTOLOGIST,2019,224(3):1290-1303.
APA Zhong, Li.,Barrett, Spencer C. H..,Wang, Xin-Jia.,Wu, Zhi-Kun.,Sun, Hua-Ying.,...&Zhou, Wei.(2019).Phylogenomic analysis reveals multiple evolutionary origins of selfing from outcrossing in a lineage of heterostylous plants.NEW PHYTOLOGIST,224(3),1290-1303.
MLA Zhong, Li,et al."Phylogenomic analysis reveals multiple evolutionary origins of selfing from outcrossing in a lineage of heterostylous plants".NEW PHYTOLOGIST 224.3(2019):1290-1303.

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来源：昆明植物研究所

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