Characterization of early microbial communities on volcanic deposits along a vegetation gradient on the Island of Miyake, Japan

Yong Guo, Reiko Fujimura, Yoshinori Sato, Wataru Suda, Seok Won Kim, Kenshiro Oshima, Masahira Hattori, Takashi Kamijo, Kazuhiko Narisawa, Hiroyuki Ohta

研究成果: Article査読

15 被引用数 (Scopus)

抄録

The 2000 eruption of Mount Oyama on the island of Miyake (Miyake-jima) created a unique opportunity to study the early ecosystem development on newly exposed terrestrial substrates. In this study, bacterial and fungal communities on 9- and 11-year-old volcanic deposits at poorly to fully vegetation-recovered sites in Miyake-jima, Japan, were characterized by conventional culture-based methods and pyrosequencing of 16S rRNA and 18S rRNA genes. Despite the differences in the vegetation cover, the upper volcanic deposit layer samples displayed low among-site variation for chemical properties (pH, total organic carbon, and total nitrogen) and microbial population densities (total direct count and culturable count). Statistical analyses of pyrosequencing data revealed that the microbial communities of volcanic deposit samples were phylogenetically diverse, in spite of very low-carbon environmental conditions, and their diversity was comparable to that in the lower soil layer (buried soil) samples. Comparing with the microbial communities in buried soil, the volcanic deposit communities were characterized by the presence of Betaproteobacteria and Gammaproteobacteria as the main bacterial class, Deinococcus-Thermus as the minor bacterial phyla, and Ascomycota as the major fungal phyla. Multivariate analysis revealed that several bacterial families and fungal classes correlated positively or negatively with plant species.

本文言語English
ページ(範囲)38-49
ページ数12
ジャーナルMicrobes and Environments
29
1
DOI
出版ステータスPublished - 2014
外部発表はい

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 土壌科学
  • 植物科学

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