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Sulfur assimilation in corals with aposymbiotic and symbiotic zooxanthellae.
Higuchi, Tomihiko; Tanaka, Kentaro; Shirai, Kotaro; Yuyama, Ikuko; Mezaki, Takuma; Takahata, Naoto; Sano, Yuji.
Afiliação
  • Higuchi T; Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan.
  • Tanaka K; Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan.
  • Shirai K; Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan.
  • Yuyama I; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan.
  • Mezaki T; Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi, 753-8512, Japan.
  • Takahata N; Kuroshio Biological Research Foundation, Nishidomari, Otsuki, Kochi, 788-0333, Japan.
  • Sano Y; Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan.
Environ Microbiol Rep ; 13(2): 98-103, 2021 04.
Article em En | MEDLINE | ID: mdl-33196142
ABSTRACT
Although sulfate ions are the main form of sulfur in the ocean, there is limited knowledge on their use by living organisms. Stable isotope labelling and NanoSIMS analysis were used in this study to clarify how sulfate, in seawater, is assimilated by corals and zooxanthellae at the cellular level. Aposymbiotic and symbiotic coral juveniles from the genus Acropora were incubated for 2 days in filtered seawater with 34 S-labelled sulfate. Further, the labelled corals were incubated for additional 2 days in natural seawater. Mapping of sulfur isotopes (34 S/32 S) showed that the 'hotspots' were enriched in 34 S on a sub-micro level and were heterogeneously distributed in the coral soft tissues. Specifically, 34 S hotspots were found in both the symbiotic zooxanthellae and coral host tissues. In aposymbiotic corals, 34 S was detected in the tissues, indicating that the host corals directly assimilated the sulfate ions without any aid from the zooxanthellae. Even after 2 days in normal seawater, the 34 S label was clearly seen in both symbiotic and aposymbiotic corals, indicating that the assimilated sulfur was retained for at least 2 days.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Antozoários Limite: Animals Idioma: En Revista: Environ Microbiol Rep Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Japão

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Antozoários Limite: Animals Idioma: En Revista: Environ Microbiol Rep Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Japão