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Natural hybridization among three Rhododendron species (Ericaceae) revealed by morphological and genomic evidence
Zheng,Wei; Yan,Li-Jun; Burgess,Kevin S.; Luo,Ya-Huang; Zou,Jia-Yun; Qin,Han-Tao; Wang,Ji-Hua; Gao,Lian-Ming
2021
Source PublicationBMC PLANT BIOLOGY
ISSN1471-2229
Volume21Issue:1Pages:529
AbstractBackground Natural hybridization can influence the adaptive response to selection and accelerate species diversification. Understanding the composition and structure of hybrid zones may elucidate patterns of hybridization processes that are important to the formation and maintenance of species, especially for taxa that have experienced rapidly adaptive radiation. Here, we used morphological traits, ddRAD-seq and plastid DNA sequence data to investigate the structure of a Rhododendron hybrid zone and uncover the hybridization patterns among three sympatric and closely related species. Results Our results show that the hybrid zone is complex, where bi-directional hybridization takes place among the three sympatric parental species: R. spinuliferum, R. scabrifolium, and R. spiciferum. Hybrids between R. spinuliferum and R. spiciferum (R. xduclouxii) comprise multiple hybrid classes and a high proportion of F-1 generation hybrids, while a novel hybrid taxon between R. spinuliferum and R. scabrifolium dominated the F-2 generation, but no backcross individuals were detected. The hybrid zone showed basically coincident patterns of population structure between genomic and morphological data. Conclusions Natural hybridization exists among the three Rhododendron species in the hybrid zone, although patterns of hybrid formation vary between hybrid taxa, which may result in different evolutionary outcomes. This study represents a unique opportunity to dissect the ecological and evolutionary mechanisms associated with adaptive radiation of Rhododendron species in a biodiversity hotspot.
KeywordddRAD sequencing Hybrid zone Morphological trait Genetic structure Natural hybridization Rhododendron SAGEBRUSH ARTEMISIA-TRIDENTATA NARROW HYBRID ZONE ASYMMETRIC HYBRIDIZATION REPRODUCTIVE ISOLATION AQUILEGIA-FORMOSA PINUS-DENSATA MOUNT-ETNA SPECIATION ORIGIN ADAPTATION
DOI10.1186/s12870-021-03312-y
WOS IDWOS:000717520600003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/73692
Collection中国科学院昆明植物研究所
Affiliation1.[Zheng, Wei
2.Yan, Li-Jun
3.Luo, Ya-Huang
4.Zou, Jia-Yun
5.Qin, Han-Tao
6.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
7.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
8.Yunnan Normal Univ, Coll Vocat & Tech Educ, Kunming 650092, Yunnan, Peoples R China
9.[Burgess, Kevin S.] Columbus State Univ, Univ Syst Georgia, Dept Biol, Columbus, GA 31907 USA
10.Yunnan Acad Agr Sci, Flower Res Inst, Kunming 650205, Yunnan, Peoples R China
11.Chinese Acad Sci, Kunming Inst Bot, Lijiang Forest Biodivers Natl Observat & Res Stn, Lijiang 674100, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Zheng,Wei,Yan,Li-Jun,Burgess,Kevin S.,et al. Natural hybridization among three Rhododendron species (Ericaceae) revealed by morphological and genomic evidence[J]. BMC PLANT BIOLOGY,2021,21(1):529.
APA Zheng,Wei.,Yan,Li-Jun.,Burgess,Kevin S..,Luo,Ya-Huang.,Zou,Jia-Yun.,...&Gao,Lian-Ming.(2021).Natural hybridization among three Rhododendron species (Ericaceae) revealed by morphological and genomic evidence.BMC PLANT BIOLOGY,21(1),529.
MLA Zheng,Wei,et al."Natural hybridization among three Rhododendron species (Ericaceae) revealed by morphological and genomic evidence".BMC PLANT BIOLOGY 21.1(2021):529.
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