| MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA | |
| Tang, Ying Zhong1,2; Harke, Matthew J.1; Gobler, Christopher J.1; Gobler, CJ | |
| 2013-12-01 | |
| 发表期刊 | JOURNAL OF PHYCOLOGY
 |
| ISSN | 0022-3646 |
| 卷号 | 49期号:6页码:1084-1094 |
| 文章类型 | Article |
| 摘要 | We report on morphological observations, phylogenetic analyses, bloom dynamics, and ichthyotoxicity of the common but poorly characterized dinoflagellate Pheopolykrikos hartmannii (Zimmermann) Matsuoka et Fukuyo. From 2008 to 2010 in the Forge River Estuary, NY, USA, P.hartmannii bloomed during summer and early fall, achieving densities exceeding 8,000 cellsmL(-1) and often dominating microphytoplankton communities. Large subunit (LSU) and small subunit (SSU) rDNA sequences demonstrated that NY isolates of P.hartmannii sequences were 99%-100% identical to P.hartmannii isolates from eastern US and Korea. In both the LSU and SSU rDNA phylogenies, the clades containing P.hartmannii sequences were distinct sister clades to those composed of Polykrikos schwartzii and P.kofoidii. In the LSU rDNA phylogeny, however, the clade composed of P.hartmannii and a sequence of the photosynthetic Polykrikos lebourae was well separated from the clade composed of 10 entries of Polykrikos schwartzii and P.kofoidii. In addition, a gap of similar to 180 bases was observed when the LSU rDNA sequences of P.hartmannii were aligned with P.schwartzii and P.kofoidii but was not observed in the alignment between P.hartmannii and P.lebourae. Using scanning electron microscopy, several morphological features previously not reported for P.hartmannii were observed: a ventral groove located in the sulcus, a deep arc-like apical concavity within the area of apical groove, scale-like vesicles, and a shallow, completely enclosed, loop-like apical groove. Resting cysts with arrow-like surface spines were produced heterothallically by crossing clonal isolates and germinated single gymnoid cells. Finally, filtered and unfiltered bloom water from the Forge River and clonal cultures of P.hartmannii exhibited acute ichthyotoxicity to juvenile sheepshead minnows (Cyprinodon variegates) and aeration did not mitigate this effect, suggesting P.hartmannii is an ichthyotoxic, harmful alga.; We report on morphological observations, phylogenetic analyses, bloom dynamics, and ichthyotoxicity of the common but poorly characterized dinoflagellate Pheopolykrikos hartmannii (Zimmermann) Matsuoka et Fukuyo. From 2008 to 2010 in the Forge River Estuary, NY, USA, P.hartmannii bloomed during summer and early fall, achieving densities exceeding 8,000 cellsmL(-1) and often dominating microphytoplankton communities. Large subunit (LSU) and small subunit (SSU) rDNA sequences demonstrated that NY isolates of P.hartmannii sequences were 99%-100% identical to P.hartmannii isolates from eastern US and Korea. In both the LSU and SSU rDNA phylogenies, the clades containing P.hartmannii sequences were distinct sister clades to those composed of Polykrikos schwartzii and P.kofoidii. In the LSU rDNA phylogeny, however, the clade composed of P.hartmannii and a sequence of the photosynthetic Polykrikos lebourae was well separated from the clade composed of 10 entries of Polykrikos schwartzii and P.kofoidii. In addition, a gap of similar to 180 bases was observed when the LSU rDNA sequences of P.hartmannii were aligned with P.schwartzii and P.kofoidii but was not observed in the alignment between P.hartmannii and P.lebourae. Using scanning electron microscopy, several morphological features previously not reported for P.hartmannii were observed: a ventral groove located in the sulcus, a deep arc-like apical concavity within the area of apical groove, scale-like vesicles, and a shallow, completely enclosed, loop-like apical groove. Resting cysts with arrow-like surface spines were produced heterothallically by crossing clonal isolates and germinated single gymnoid cells. Finally, filtered and unfiltered bloom water from the Forge River and clonal cultures of P.hartmannii exhibited acute ichthyotoxicity to juvenile sheepshead minnows (Cyprinodon variegates) and aeration did not mitigate this effect, suggesting P.hartmannii is an ichthyotoxic, harmful alga. |
| 关键词 | Harmful Algal Blooms (Habs) Ichthyotoxicity Pheopolykrikos Hartmannii Sheepshead Minnows |
| 学科领域 | Plant Sciences ; Marine & Freshwater Biology |
| DOI | 10.1111/jpy.12114 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Plant Sciences ; Marine & Freshwater Biology |
| WOS类目 | Plant Sciences ; Marine & Freshwater Biology |
| WOS记录号 | WOS:000328343400007 |
| WOS关键词 | HARMFUL ALGAL BLOOMS ; POLYKRIKOS-KOFOIDII ; DINOFLAGELLATE CYSTS ; LONG-ISLAND ; NOV ; EUTROPHICATION ; GYMNODINIALES ; SCHWARTZII ; INFERENCE ; MRBAYES |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16309 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Gobler, CJ |
| 作者单位 | 1.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Tang, Ying Zhong,Harke, Matthew J.,Gobler, Christopher J.,et al. MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA[J]. JOURNAL OF PHYCOLOGY,2013,49(6):1084-1094. |
| APA | Tang, Ying Zhong,Harke, Matthew J.,Gobler, Christopher J.,&Gobler, CJ.(2013).MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA.JOURNAL OF PHYCOLOGY,49(6),1084-1094. |
| MLA | Tang, Ying Zhong,et al."MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA".JOURNAL OF PHYCOLOGY 49.6(2013):1084-1094. |
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