論文

基本情報

氏名 矢野 興一
氏名(カナ) ヤノ オキヒト
氏名(英語) Yano Okihito
所属 生物地球学部 生物地球学科
職名 准教授
researchmap研究者コード B000339337
researchmap機関 岡山理科大学

題名

Cryptic intraspecific diversity of a polyploid complex of Abildgaardia ovata (Cyperaceae)

単著・共著の別

共著

著者

Yu Ito, Yuki Tamura, Yukiko Saito, Hiroshi Ikeda, Kyong-Sook Chung, Hyoung-Tak Im, Keshab Raj Rajbhandari, Tian-Chuan Hsu, Okihito Yano

概要

Abildgaardia ovata (Cyperaceae) is a widely distributed herbaceous plant found in tropical to warm-temperate regions, including East, South-east and South Asia, Oceania, Africa and Central and South America. Preliminary data suggested intraspecific diversity in A. ovata in Japan; thus, we investigated the genetic diversity of A. ovata using chloroplast DNA and the internal transcribed spacers of nuclear ribosomal DNA (nrITS) sequence data and analysed its distribution patterns and morphological traits. Further, we observed its chromosomes. We identified two distinct major lineages with slightly overlapping yet unique distribution patterns, one in Japan’s Honshu, Kyushu, Nansei, Korea’s Jeju Isl. and Nepal, while the other was restricted to Nansei and Taiwan. Species delimitation analysis supported the existence of two A. ovata intraspecies. Ecological niche modelling further suggested ecological differentiation between the two intraspecies. Samples with heterogeneous nrITS sequences were also found in Nansei where the two species are distributed; those may have resulted from hybridisation between the above-mentioned two intraspecies. Other samples with heterogeneous nrITS distributed in Kyushu. With respect to chromosome numbers, the former is a homoploid hybrid between 2n = 20 intraspecies while the latter is an allopolyploid with 2n = 40. Together, we identified novel cryptic diversity within the widespread polyploid species complex; however, the lack of diagnostic characters precludes formal description at this point. Further taxon sampling and additional genetic analyses may reveal whether the more narrowly distributed lineage differentiated from the widely distributed one in Asia.

発表雑誌等の名称

Plant Systematics and Evolution

出版者

310

36

開始ページ

1

終了ページ

17

発行又は発表の年月

2024/09

査読の有無

有り

招待の有無

無し

記述言語

英語

掲載種別

研究論文(学術雑誌)

ISSN

ID:DOI

https://doi.org/10.1007/s00606-024-01920-3

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

ORCIDのPut Code

DBLP ID