Incomplete reproductive isolation between Rhododendron taxa enables hybrid formation and persistence
Yan, Li-Jun1,2,3,4; Burgess, Kevin S.5; Zheng, Wei1,3; Tao, Zhi-Bin1,3; Li, De-Zhu1,2,3; Gao, Lian-Ming1
Corresponding AuthorLi, De-Zhu(dzl@mail.kib.ac.cn) ; Gao, Lian-Ming(gaolm@mail.kib.ac.cn)
2019-04-01
Source PublicationJOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN1672-9072
Volume61Issue:4Pages:433-448
AbstractThe evolutionary consequences of hybridization ultimately depend on the magnitude of reproductive isolation between hybrids and their parents. We evaluated the relative contributions of pre- and post-zygotic barriers to reproduction for hybrid formation, hybrid persistence and potential for reproductive isolation of hybrids formed between two Rhododendron species, R. spiciferum and R. spinuliferum. Our study established that incomplete reproductive isolation promotes hybrid formation and persistence and delays hybrid speciation. All pre-zygotic barriers to reproduction leading to hybrid formation are incomplete: parental species have overlapping flowering; they share the same pollinators; reciprocal assessments of pollen tube germination and growth do not differ among parents. The absence of post-zygotic barriers between parental taxa indicates that the persistence of hybrids is likely. Reproductive isolation was incomplete between hybrids and parents in all cases studied, although asymmetric differences in reproductive fitness were prevalent and possibly explain the genetic structure of natural hybrid swarms where hybridization is known to be bidirectional but asymmetric. Introgression, rather than speciation, is a probable evolutionary outcome of hybridization between the two Rhododendron taxa. Our study provides insights into understanding the evolutionary implications of natural hybridization in woody plants.
DOI10.1111/jipb.12718
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Plant Sciences
WOS SubjectBiochemistry & Molecular Biology ; Plant Sciences
WOS IDWOS:000466373800006
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/66763
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 AuthorLi, De-Zhu; Gao, Lian-Ming
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Kunming Coll Life Sci, Kunming 650201, Yunnan, Peoples R China
4.Yunnan Normal Univ, Coll Vocat & Tech Educ, Kunming 650092, Yunnan, Peoples R China
5.Univ Syst Georgia, Columbus State Univ, Coll Letters & Sci, Dept Biol, Columbus, GA 31907 USA
Recommended Citation
GB/T 7714
Yan, Li-Jun,Burgess, Kevin S.,Zheng, Wei,et al. Incomplete reproductive isolation between Rhododendron taxa enables hybrid formation and persistence[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2019,61(4):433-448.
APA Yan, Li-Jun,Burgess, Kevin S.,Zheng, Wei,Tao, Zhi-Bin,Li, De-Zhu,&Gao, Lian-Ming.(2019).Incomplete reproductive isolation between Rhododendron taxa enables hybrid formation and persistence.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,61(4),433-448.
MLA Yan, Li-Jun,et al."Incomplete reproductive isolation between Rhododendron taxa enables hybrid formation and persistence".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 61.4(2019):433-448.
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