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The natural hybridization between species Ligularia nelumbifolia and Cremanthodium stenoglossum (Senecioneae, Asteraceae) suggests underdeveloped reproductive isolation and ambiguous intergeneric boundary
Hu,Li; Yang,Rui; Wang,Yue-Hua; Gong,Xun
2021
Source PublicationAOB PLANTS
ISSN2041-2851
Volume13Issue:2Pages:plab012
AbstractNatural hybridization is frequent in plants and is considered an important factor facilitating speciation. The natural intergeneric hybridization between Ligularia and Cremanthodium was previously confirmed using a couple of DNA markers. However, the mechanism of this intergeneric hybridization and the role of reproductive isolation in the process of hybridization remain unclear. Here we used double-digest restriction site-associated DNA sequencing (ddRAD-seq) to further quantify the occurrence of hybridization, the genetic structure of the hybrid population and the role of reproductive isolation between Ligularia nelumbifolia and Cremanthodium stenoglossum. The results based on the ddRAD-seq SNP data sets indicated that hybridization between L. nelumbifolia and C. stenoglossum was restricted to F(1)s, and no gene introgression was identified between these two species. STRUCTURE analysis and maximum likelihood (ML) tree results showed a slightly larger genetic contribution of L. nelumbifolia to putative hybrid F(1)s. We deduced that the reproductive isolation between these two parent species is not well-developed but still strong enough to maintain the genetic integrity of the species, and that their F(1)s are sterile or with low fertility. Given the poorly resolved phylogenetic relationship between Ligularia and Cremanthodium, the occurrence of natural hybridization between L. nelumbifolia and C. stenoglossum may provide new insights into the re-circumscription and re-delimitation of these two genera.
KeywordCremanthodium ddRAD-seq F(1)s Ligularia natural hybridization HYBRID SPECIATION YUNNAN INTROGRESSION DISPLACEMENT RADIATION VELLEREA PATTERNS PROGRAM STACKS
DOI10.1093/aobpla/plab012
WOS IDWOS:000637980500001
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/73230
Collection中国科学院昆明植物研究所
Affiliation1.Yunnan Univ, Sch Life Sci, Plant Sci Inst, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650201, Yunnan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hu,Li,Yang,Rui,Wang,Yue-Hua,et al. The natural hybridization between species Ligularia nelumbifolia and Cremanthodium stenoglossum (Senecioneae, Asteraceae) suggests underdeveloped reproductive isolation and ambiguous intergeneric boundary[J]. AOB PLANTS,2021,13(2):plab012.
APA Hu,Li,Yang,Rui,Wang,Yue-Hua,&Gong,Xun.(2021).The natural hybridization between species Ligularia nelumbifolia and Cremanthodium stenoglossum (Senecioneae, Asteraceae) suggests underdeveloped reproductive isolation and ambiguous intergeneric boundary.AOB PLANTS,13(2),plab012.
MLA Hu,Li,et al."The natural hybridization between species Ligularia nelumbifolia and Cremanthodium stenoglossum (Senecioneae, Asteraceae) suggests underdeveloped reproductive isolation and ambiguous intergeneric boundary".AOB PLANTS 13.2(2021):plab012.
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