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タイトル: | Ecological Dynamics of Broad- and Narrow-Host-Range Viruses Infecting the Bloom-Forming Toxic Cyanobacterium Microcystis aeruginosa |
著者: | Morimoto, Daichi Yoshida, Naohiro Sasaki, Aya Nakagawa, Satoshi Sako, Yoshihiko Yoshida, Takashi https://orcid.org/0000-0002-5257-0617 (unconfirmed) |
著者名の別形: | 森本, 大地 吉田, 尚寛 佐々木, 彩 中川, 聡 左子, 芳彦 吉田, 天士 |
キーワード: | Microcystis aeruginosa cyanophages real-time PCR amplicon sequencing internal transcribed spacers cyanobacterial bloom |
発行日: | 28-Feb-2023 |
出版者: | American Society for Microbiology |
誌名: | Applied and Environmental Microbiology |
巻: | 89 |
号: | 2 |
論文番号: | e02111-22 |
抄録: | Microcystis aeruginosa is predicted to interact and coexist with diverse broad- and narrow-host-range viruses within a bloom; however, little is known about their affects on Microcystis population dynamics. Here, we developed a real-time PCR assay for the quantification of these viruses that have different host ranges. During the sampling period, total Microcystis abundance showed two peaks in May and August with a temporary decrease in June. The Microcystis population is largely divided into three phylotypes based on internal transcribed sequences (ITS; ITS types I to III). ITS I was the dominant phylotype (66% to 88%) except in June. Although the ITS II and III phylotypes were mostly less abundant, these phylotypes temporarily increased to approximately equivalent abundances of the ITS I population in June. During the same sampling period, the abundances of the broad-host-range virus MVGF_NODE331 increased from April to May and from July to October with a temporary decrease in June, in which its dynamics were in proportion to the increase of total Microcystis abundances regardless of changes in host ITS population composition. In contrast, the narrow-host-range viruses MVG_NODE620 and Ma-LMM01 were considerably less abundant than the broad-host-range virus and generally did not fluctuate in the environment. Considering that M. aeruginosa could increase the abundance and sustain the bloom under the prevalence of the broad-host-range virus, host abundant and diverse antiviral mechanisms might contribute to coexistence with its viruses. |
記述: | アオコ感染性広域・狭域宿主ウイルスの動態 --アオコとウイルスはいかに共存するか--. 京都大学プレスリリース. 2023-02-24. |
著作権等: | © 2023 American Society for Microbiology. All Rights Reserved. The full-text file will be made open to the public on 28 August 2023 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. |
URI: | http://hdl.handle.net/2433/279506 |
DOI(出版社版): | 10.1128/aem.02111-22 |
PubMed ID: | 36688685 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2023-02-24-5 |
出現コレクション: | 学術雑誌掲載論文等 |
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