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题名: Isolation and characterization of a new reported cyanobacterium Leptolyngbya bijugata coproducing odorous geosmin and 2-methylisoborneol
作者: Wang, Zhongjie1, 2; Xiao, Peng2; Song, Gaofei2; Li, Yeguang1; Li, Renhui2
关键词: Cyanobacteria ; Geosmin ; MIB ; Leptolyngbya bijugata ; Off-flavor ; Earthy-musty odors
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2015-08-01
DOI: 10.1007/s11356-015-4470-2
卷: 22, 期:16, 页:12133-12140
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: The earthy-musty compounds geosmin and 2-methylisoborneol (MIB) produced by cyanobacteria are considered as the main biological causes of off-flavor events, especially in aquatic ecosystems. More than 50 filamentous cyanobacteria species have been documented as geosmin or MIB producers; however, little is known about the species coproducing these two metabolites. In this study, an epiphytic sample was collected from a river in Hubei, China. Three isolated strains (A2, B2, and B4) producing earthy odors were successfully isolated and identified as the cyanobacterium Leptolyngbya bijugata Anagnostidis et Komarek 1988 based on morphology and 16S rDNA sequences. Gas chromatography analysis confirmed that the isolated L. bijugata strains were geosmin and MIB coproducers, with accumulation ranging from 13.6 to 22.4 and 12.3 to 57.5 mu g L-1, respectively. The partial fragments of geosmin and MIB synthesis genes in the L. bijugata strains were cloned and sequenced. Further sequences and phylogenetic analysis indicated the high conservation and a common origin of these genes in cyanobacteria. This study is the first to report and characterize the coproduction of geosmin and MIB by L. bijugata, representing a new source for potential risk of off-flavor events.
关键词[WOS]: QUANTITATIVE PCR ; MUSTY ODOR ; IDENTIFICATION ; STREPTOMYCES ; AQUACULTURE ; SYSTEMS ; CHINA ; LAKE ; QUANTIFICATION ; ESTABLISHMENT
语种: 英语
WOS记录号: WOS:000358579700016
ISSN号: 0944-1344
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/25960
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Special Agr, Wuhan Bot Garden, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
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