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タイトル: Exploring phylogeny and genomic vulnerability of Melastoma (Melastomataceae) endemic to a World Natural Heritage site, the Bonin Islands著者: Kobayashi, Yukihiro; Komaki, Yoshiteru; Isagi, Yuji抄録: Melastoma (Melastomataceae) includes ca. 100 species across tropical to subtropical regions of Asia and Oceania. The Bonin Islands harbor three endemic taxa: M. tetramerum, M. tetramerum var. pentapetalum, and M. candidum var. alessandrense. Of these, M. tetramerum is critically endangered and faces near extinction in the wild. This study investigates the phylogenetic relationships among these endemic Melastoma species in the Bonin Islands based on the whole chloroplast genome and nuclear SNPs. The results revealed that M. candidum var. alessandrense was placed in the clade of the widespread East Asian M. candidum and has a distinct evolutionary origin from the other two taxa. The population genomics analyses (heterozygosity, rates of deleterious mutations, and numbers and ...

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