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Allopolyploidy enhances survival advantages for urban environments in the native plant genus Commelina.
Shimomai, Hina; Taichi, Nakata; Katsuhara, Koki R; Kato, Seiji; Ushimaru, Atushi; Ohmido, Nobuko.
Afiliación
  • Shimomai H; Graduate School of Human Development and Environment, Kobe University, Tsurukabuto 3-11, Nada, 657-8501, Kobe, Japan.
  • Taichi N; Graduate School of Human Development and Environment, Kobe University, Tsurukabuto 3-11, Nada, 657-8501, Kobe, Japan.
  • Katsuhara KR; Graduate School of Environmental and Life Science, Okayama University, Okayama, Okayama 700-8530, Japan.
  • Kato S; Graduate School of Human Development and Environment, Kobe University, Tsurukabuto 3-11, Nada, 657-8501, Kobe, Japan.
  • Ushimaru A; Graduate School of Human Development and Environment, Kobe University, Tsurukabuto 3-11, Nada, 657-8501, Kobe, Japan.
  • Ohmido N; Graduate School of Human Development and Environment, Kobe University, Tsurukabuto 3-11, Nada, 657-8501, Kobe, Japan.
Ann Bot ; 2024 Aug 23.
Article en En | MEDLINE | ID: mdl-39175163
ABSTRACT
BACKGROUND AND

AIMS:

Urbanization-induced environmental changes affect the geographical distribution of natural plant species. This study focused on how polyploidization, a dynamic genome change, influences the survival and distribution of Commelina communis L. (Cc) and its subspecies, C. communis f. ciliata (Masam.) Murata (Ccfc) which have different chromosome numbers (e.g. Cc 2n = 88, Ccfc 2n = 46). The aim is to investigate polyploidization effects on natural plant distribution in urban environments.

METHODS:

The geographical distribution across urban-rural gradients was investigated at a total of 218 sites in Japan. Stomata size and density were measured and compared between Cc and Ccfc. Flow cytometry determined genome size and polyploidy. Chromosome karyotyping was performed using genomic in situ hybridization (GISH) method. KEY

RESULTS:

Urban areas were exclusively dominated by Cc, while Cc and Ccfc coexisted in rural areas. Cc had larger and fewer stomata and more than twice the genome size than Ccfc. GISH results indicated that Cc possesses Ccfc and another unknown genome, suggesting allopolyploidy.

CONCLUSIONS:

Our results show that the ploidy difference affects the geographical distribution, the stomata traits, and genome size between two distinct taxa in the genus Commelina, C. communis as a neo-tetraploid and C. communis f. ciliata, the diploid. Cc is an allopolyploid, therefore, not only polyploidy but also an additional genome with new sets of genes and alleles contributes to Cc having enhance survival potentials in urban environments compared to Ccfc. This is the first investigation to clarify the distribution difference related to urban environments, the difference in stomata traits and genome size, and to conduct chromosome composition in Commelina species.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ann Bot Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ann Bot Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido