Plastid Genome Evolution in the Early-Diverging Legume Subfamily Cercidoideae (Fabaceae)
Wang, Yin-Huan1,2,3; Wicke, Susann4; Wang, Hong1; Jin, Jian-Jun2,3; Chen, Si-Yun2; Zhang, Shu-Dong2; Li, De-Zhu1,2; Yi, Ting-Shuang1,2
2018-02-08
Source PublicationFRONTIERS IN PLANT SCIENCE
ISSN1664-462X
Volume9Issue:1Pages:138
Abstract

The subfamily Cercidoideae is an early-branching legume lineage, which consists of 13 genera distributed in the tropical and warm temperate Northern Hemisphere. A previous study detected two plastid genomic variations in this subfamily, but the limited taxon sampling left the overall plastid genome (plastome) diversification across the subfamily unaddressed, and phylogenetic relationships within this clade remained unresolved. Here, we assembled eight plastomes from seven Cercidoideae genera and conducted phylogenomic-comparative analyses in a broad evolutionary framework across legumes. The plastomes of Cercidoideae all exhibited a typical quadripartite structure with a conserved gene content typical of most angiosperm plastomes. Plastome size ranged from 151,705 to 165,416 bp, mainly due to the expansion and contraction of inverted repeat (IR) regions. The order of genes varied due to the occurrence of several inversions. In Tylosema species, a plastome with a 29-bp IR-mediated inversion was found to coexist with a canonical-type plastome, and the abundance of the two arrangements of isomeric molecules differed between individuals. Complete plastome data were much more efficient at resolving intergeneric relationships of Cercidoideae than the previously used selection of only a few plastid or nuclear loci. In sum, our study revealed novel insights into the structural diversification of plastomes in an early-branching legume lineage, and, thus, into the evolutionary trajectories of legume plastomes in general.

KeywordInversion Isomeric Plastomes Ir Expansion/contraction Plastome Variation Cercidoideae Fabaceae
DOI10.3389/fpls.2018.00138
Language英语
WOS IDWOS:000424444200001
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/60460
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Kunming Coll Life Sci, Beijing, Peoples R China
4.Univ Munster, Inst Evolut & Biodivers, Munster, Germany
Recommended Citation
GB/T 7714
Wang, Yin-Huan,Wicke, Susann,Wang, Hong,et al. Plastid Genome Evolution in the Early-Diverging Legume Subfamily Cercidoideae (Fabaceae)[J]. FRONTIERS IN PLANT SCIENCE,2018,9(1):138.
APA Wang, Yin-Huan.,Wicke, Susann.,Wang, Hong.,Jin, Jian-Jun.,Chen, Si-Yun.,...&Yi, Ting-Shuang.(2018).Plastid Genome Evolution in the Early-Diverging Legume Subfamily Cercidoideae (Fabaceae).FRONTIERS IN PLANT SCIENCE,9(1),138.
MLA Wang, Yin-Huan,et al."Plastid Genome Evolution in the Early-Diverging Legume Subfamily Cercidoideae (Fabaceae)".FRONTIERS IN PLANT SCIENCE 9.1(2018):138.
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