Phylogenomic analysis reveals multiple evolutionary origins of selfing from outcrossing in a lineage of heterostylous plants
Zhong, Li1,2; Barrett, Spencer C. H.3; Wang, Xin-Jia1,2; Wu, Zhi-Kun4; Sun, Hua-Ying1; Li, De-Zhu5; Wang, Hong1; Zhou, Wei5
Corresponding AuthorWang, Hong(wanghong@mail.kib.ac.cn) ; Zhou, Wei(zhouwei@mail.kib.ac.cn)
2019-11-01
Source PublicationNEW PHYTOLOGIST
ISSN0028-646X
Volume224Issue:3Pages:1290-1303
AbstractEvolutionary 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.
Keywordfloral evolution genetic diversity heterostyly homostyly mating systems phylogenomics Primula selfing
DOI10.1111/nph.15905
Indexed BySCI ; SCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000491130900028
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/70914
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorWang, Hong; Zhou, Wei
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
3.Univ Toronto, Dept Ecol & Evolutionary Biol, Toronto, ON M5S 3B2, Canada
4.Guiyang Univ Tradit Chinese Med, Dept Pharm, Guiyang 550002, Guizhou, Peoples R China
5.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
Recommended Citation
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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