Complete chloroplast genome sequence and phylogenetic analysis of Rhododendron molle G. Don, an endangered Ericaceae species located on Dabie Mountains (central China)

Xu Bilin; Li Zhiliang; Liu Yan; Zhang Wanjing; Yu Jiaojun; Dong Hongjin; Zhang Jialiang; Wang Shuzhen

doi:10.1007/s11816-023-00818-9

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자료유형: 학술저널

저자정보: Xu Bilin (College of Biology and Agricultural Resources Huanggang Normal University) Li Zhiliang (College of Biology and Agricultural Resources Huanggang Normal University) Liu Yan (College of Biology and Agricultural Resources Huanggang Normal University) Zhang Wanjing (College of Biology and Agricultural Resources Huanggang Normal University) Yu Jiaojun (College of Biology and Agricultural Resources Huanggang Normal University) Dong Hongjin (College of Biology and Agricultural Resources Huanggang Normal University) Zhang Jialiang (College of Biology and Agricultural Resources Huanggang Normal University) Wang Shuzhen (College of Biology and Agricultural Resources Huanggang Normal University)

저널정보: 한국식물생명공학회 Plant Biotechnology Reports Plant Biotechnology Reports 제17권 제2호

발행연도: 2023.4

수록면: 303 - 314 (12page)

DOI: 10.1007/s11816-023-00818-9

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Rhododendron molle G. Don, an endemic species of the Ericaceae family, possesses valuable medicinal and horticultural values. In this research, R. molle cp genome proved to be a typical quadripartite structure with the length of 200,878 bp. In particular, the lengths of large single-copy region (LSC), small single-copy region (SSC), and inverted repeat regions (IR) were 198,019 bp, 629 bp, and 1117 bp, respectively. Among the 149 unique genes, 97 were protein-coding genes, 44 were tRNA genes, and 8 were rRNA genes, respectively. Leucine was the most representative amino acid (10.663%), while Cysteine was the lowest representative (1.178%). A set of 30 codons showed obvious codon usage bias, while 29 were A/U- ending codons. Six gene regions showed high levels of nucleotide diversity (Pi > 0.02). Totally, 273 SSRs were identified. Maximum-likelihood (ML) phylogenetic analysis revealed that R. molle was relatively closed to the R. pulchrum and R. delavayi. High similarity was detected among Ericaceae species, and the coding regions were more conserved than the non- coding regions. Expansion and contraction detected in IR region could be the main length variation in R. molle and related Ericaceae species. This research will supply rich genetic resource for R. molle and related species of Ericaceae.

#Rhododendron molle G. Don · Chloroplast genome · Ericaceae · Phylogeny · Microsatellite

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