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Mapping the Distribution of Cysts from the Toxic Dinoflagellate Cochlodinium polykrikoides in Bloom-Prone Estuaries by a Novel Fluorescence In Situ Hybridization Assay
Hattenrath-Lehmann, Theresa K.1; Zhen, Yu2,3; Wallace, Ryan B.1; Tang, Ying-Zhong4; Gobler, Christopher J.1
2016-02-01
发表期刊APPLIED AND ENVIRONMENTAL MICROBIOLOGY
卷号82期号:4页码:1114-1125
文章类型Article
摘要Cochlodinium polykrikoides is a cosmopolitan dinoflagellate that is notorious for causing fish-killing harmful algal blooms (HABs) across North America and Asia. While recent laboratory and ecosystem studies have definitively demonstrated that Cochlodinium forms resting cysts that may play a key role in the dynamics of its HABs, uncertainties regarding cyst morphology and detection have prohibited even a rudimentary understanding of the distribution of C. polykrikoides cysts in coastal ecosystems. Here, we report on the development of a fluorescence in situ hybridization (FISH) assay using oligonucleotide probes specific for the large subunit (LSU) ribosomal DNA (rDNA) of C. polykrikoides. The LSU rDNA-targeted FISH assay was used with epifluorescence microscopy and was iteratively refined to maximize the fluorescent reaction with C. polykrikoides and minimize cross-reactivity. The final LSU rDNA-targeted FISH assay was found to quantitatively recover cysts made by North American isolates of C. polykrikoides but not cysts formed by other common cyst-forming dinoflagellates. The method was then applied to identify and map C. polykrikoides cysts across bloom-prone estuaries. Annual cyst and vegetative cell surveys revealed that elevated densities of C. polykrikoides cysts (> 100 cm(-3)) during the spring of a given year were spatially consistent with regions of dense blooms the prior summer. The identity of cysts in sediments was confirmed via independent amplification of C. polykrikoides rDNA. This study mapped C. polykrikoides cysts in a natural marine setting and indicates that the excystment of cysts formed by this harmful alga may play a key role in the development of HABs of this species.
DOI10.1128/AEM.03457-15
收录类别SCI
语种英语
WOS记录号WOS:000369375900014
引用统计
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/112446
专题海洋生态与环境科学重点实验室
作者单位1.SUNY Stony Brook, Sch Marine & Atmospher Sci, Southampton, NY USA
2.Ocean Univ China, Coll Environm Sci & Engn, Qingdao, Peoples R China
3.Ocean Univ China, Minist Educ, Key Lab Marine Environm & Ecol, Qingdao, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
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Hattenrath-Lehmann, Theresa K.,Zhen, Yu,Wallace, Ryan B.,et al. Mapping the Distribution of Cysts from the Toxic Dinoflagellate Cochlodinium polykrikoides in Bloom-Prone Estuaries by a Novel Fluorescence In Situ Hybridization Assay[J]. APPLIED AND ENVIRONMENTAL MICROBIOLOGY,2016,82(4):1114-1125.
APA Hattenrath-Lehmann, Theresa K.,Zhen, Yu,Wallace, Ryan B.,Tang, Ying-Zhong,&Gobler, Christopher J..(2016).Mapping the Distribution of Cysts from the Toxic Dinoflagellate Cochlodinium polykrikoides in Bloom-Prone Estuaries by a Novel Fluorescence In Situ Hybridization Assay.APPLIED AND ENVIRONMENTAL MICROBIOLOGY,82(4),1114-1125.
MLA Hattenrath-Lehmann, Theresa K.,et al."Mapping the Distribution of Cysts from the Toxic Dinoflagellate Cochlodinium polykrikoides in Bloom-Prone Estuaries by a Novel Fluorescence In Situ Hybridization Assay".APPLIED AND ENVIRONMENTAL MICROBIOLOGY 82.4(2016):1114-1125.
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