PMID- 33244658 OWN - NLM STAT- MEDLINE DCOM- 20210723 LR - 20210723 IS - 1436-2236 (Electronic) IS - 1436-2228 (Linking) VI - 22 IP - 6 DP - 2020 Dec TI - Characterization of Macroscopic Colony-Forming Filamentous Cyanobacteria from Okinawan Coasts as Potential Sources of Bioactive Compounds. PG - 824-835 LID - 10.1007/s10126-020-10010-7 [doi] AB - Marine macroscopic colony-forming filamentous (MMCFF) cyanobacteria are considered as prolific producers of bioactive compounds. Thus, knowledge of the diversity of MMCFF cyanobacteria as related to bioactive compound production has become very important. However, basic taxonomic studies of MMCFF cyanobacteria are lacking. Many cyanobacterial taxa are still misidentified or undescribed. In this study, a total of 32 cyanobacterial colonies from nine coastal regions of Okinawa Prefecture were investigated for a diversity assessment. A polyphasic approach including morphological and molecular studies based on 16S rRNA gene sequences was performed to characterize Okinawan MMCFF cyanobacteria. Both morphological and molecular phylogenetic results showed that MMCFF cyanobacteria from Okinawan coasts are very diverse. We found morphotypes of Lyngbya-like, Phormidium-like, and Leptolyngbya-like groups among Okinawan cyanobacterial samples. Genetically, samples were distributed in various clades in the phylogenetic tree, including within Moorena, Okeania, Caldora, Neolyngbya, Dapis, as well as several unknown clades. In addition, cytotoxic activities of three samples from Kiyan coast were tested against HeLa cells. All three crude extracts of these samples showed strong cytotoxic activity with IC(50) < 1 mug/ml. FAU - Nuryadi, Handung AU - Nuryadi H AD - Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, Japan. FAU - Sumimoto, Shimpei AU - Sumimoto S AD - Department of Material and Life Chemistry, Kanagawa University, Yokohama, Kanagawa, Japan. FAU - Teruya, Toshiaki AU - Teruya T AD - Faculty of Education, University of the Ryukyus, Nishihara, Okinawa, Japan. FAU - Suenaga, Kiyotake AU - Suenaga K AD - Department of Chemistry, Keio University, Yokohama, Kanagawa, Japan. FAU - Suda, Shoichiro AU - Suda S AD - Faculty of Science, University of the Ryukyus, Nishihara, Okinawa, Japan. sudas@sci.u-ryukyu.ac.jp. LA - eng PT - Journal Article DEP - 20201126 PL - United States TA - Mar Biotechnol (NY) JT - Marine biotechnology (New York, N.Y.) JID - 100892712 RN - 0 (Complex Mixtures) RN - 0 (RNA, Ribosomal, 16S) SB - IM MH - Complex Mixtures/toxicity MH - Cyanobacteria/*chemistry/*classification/genetics MH - HeLa Cells MH - Humans MH - Phylogeny MH - RNA, Ribosomal, 16S/genetics OTO - NOTNLM OT - 16S rRNA phylogeny OT - Cytotoxic activity OT - Marine macroscopic colony-forming filamentous (MMCFF) cyanobacteria OT - Morphological characterization EDAT- 2020/11/28 06:00 MHDA- 2021/07/24 06:00 CRDT- 2020/11/27 05:47 PHST- 2020/03/27 00:00 [received] PHST- 2020/11/12 00:00 [accepted] PHST- 2020/11/28 06:00 [pubmed] PHST- 2021/07/24 06:00 [medline] PHST- 2020/11/27 05:47 [entrez] AID - 10.1007/s10126-020-10010-7 [pii] AID - 10.1007/s10126-020-10010-7 [doi] PST - ppublish SO - Mar Biotechnol (NY). 2020 Dec;22(6):824-835. doi: 10.1007/s10126-020-10010-7. Epub 2020 Nov 26.