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Microbial Community Structure, Pigment Composition, and Nitrogen Source of Red Snow in Antarctica

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Title: Microbial Community Structure, Pigment Composition, and Nitrogen Source of Red Snow in Antarctica
Authors: Fujii, Masanori Browse this author
Takano, Yoshinori Browse this author
Kojima, Hisaya Browse this author →KAKEN DB
Hoshino, Tamotsu Browse this author
Tanaka, Ryouichi Browse this author
Fukui, Manabu Browse this author
Issue Date: Apr-2010
Publisher: Springer New York
Journal Title: Microbial Ecology
Volume: 59
Issue: 3
Start Page: 466
End Page: 475
Publisher DOI: 10.1007/s00248-009-9594-9
Abstract: "Red snow" refers to red-colored snow, caused by bloom of cold-adapted phototrophs, so-called snow algae. The red snow found in Langhovde, Antarctica, was investigated from several viewpoints. Various sizes of rounded red cells were observed in the red snow samples under microscopy. Pigment analysis demonstrated accumulation of astaxanthin in the red snow. Community structure of microorganisms was analyzed by culture independent methods. In the analyses of small subunit rRNA genes, several species of green algae, fungus, and various phylotypes of bacteria were detected. The detected bacteria were closely related to psychrophilic or psychrotolerant heterotrophic strains, or sequences detected from low temperature environments. As predominant lineage of bacteria, members of the genus Hymenobacter were consistently detected from samples obtained in two different years. Nitrogen isotopic compositions analysis indicated that the red snow was significantly 15N-enriched. Based on an estimation of trophic level, it was suggested that primary nitrogen sources of the red snow were supplied from fecal pellet of seabirds including a marine top predator of Antarctica.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小島 久弥

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