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The complete chloroplast genome of Rhododendron kawakamii (Ericaceae).

ABSTRACT: Rhododendron kawakamii is endemic in Taiwan island and is a unique and epiphytic species. Here, we report its complete chloroplast genome. The length of the R. kawakamii chloroplast genome is 230,777 bp, with a large single-copy region of 146,155 bp, a small single-copy region of 72,082 bp, and a pair of inverted repeat regions (IRA) of 6,270 bp each. The genome contains 77 protein-coding genes, 29 transfer RNA genes, and four ribosomal RNA genes. In addition, the genome contains 81 simple sequence repeats. Phylogenetic analysis revealed that R. kawakamii is genetically related to R. datiandingense.

SUBMITTER: Wang ZF

PROVIDER: S-EPMC8330798 | biostudies-literature |

REPOSITORIES: biostudies-literature

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The complete chloroplast genome of Rhododendron datiandingense (Ericaceae).

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Project description:BACKGROUND: A complex of incipient species with different degrees of morphological or ecological differentiation provides an ideal model for studying species divergence. We examined the phylogeography and the evolutionary history of the Rhododendron pseudochrysanthum s. l. RESULTS: Systematic inconsistency was detected between gene genealogies of the cpDNA and nrDNA. Rooted at R. hyperythrum and R. formosana, both trees lacked reciprocal monophyly for all members of the complex. For R. pseudochrysanthum s.l., the spatial distribution of the cpDNA had a noteworthy pattern showing high genetic differentiation (FST=0.56-0.72) between populations in the Yushan Mountain Range and populations of the other mountain ranges. CONCLUSION: Both incomplete lineage sorting and interspecific hybridization/introgression may have contributed to the lack of monophyly among R. hyperythrum, R. formosana and R. pseudochrysanthum s.l. Independent colonizations, plus low capabilities of seed dispersal in current environments, may have resulted in the genetic differentiation between populations of different mountain ranges. At the population level, the populations of Central, and Sheishan Mountains may have undergone postglacial demographic expansion, while populations of the Yushan Mountain Range are likely to have remained stable ever since the colonization. In contrast, the single population of the Alishan Mountain Range with a fixed cpDNA haplotype may have experienced bottleneck/founder's events.

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Isolation and characterization of microsatellite loci for Rhododendron shanii (Ericaceae).

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