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Histology, ultrastructure, and morphogenesis of a rickettsia-like organism causing disease in the oyster, Crassostrea ariakensis gould
Sun, JF; Wu, XZ; wuxz@zju.edu.cn
2004
发表期刊JOURNAL OF INVERTEBRATE PATHOLOGY
ISSN0022-2011
卷号86期号:3页码:77-86
摘要Moribund specimens of the oyster, Crassostrea ariakensis Gould, aged 2-3 years were collected from Hailing Bay in Yangxi County of Guangdong Province from February to May and November to December in the years 2001, 2002, and 2003. A massive infection by an obligate intracellular prokaryote, specifically a rickettsia-like organism (RLO), was found. Here we report investigations of this RLO in the tissues of the oyster C. ariakensis Gould and describe the histology, ultrastructure, and morphogenesis of this pathogen in C ariakensis Gould. Light microscopic observations of stained tissues revealed cytoplasmic inclusion bodies typical of prokaryote infection in about 87% (26/30) of the oysters. Most inclusions were observed in epithelial cells and connective tissues of the gill, mantle, and digestive gland of most of the infected oysters. The shape, size, and color of inclusions from different tissues were polymorphic. Electron microscopic examination of digestive gland, gill, and mantle tissues showed that the RLOs were intracytoplasmic. RLOs were often round, dumb-bell-shaped (undergoing binary fission), or occasionally rod-shaped and ranged from approximately 0.58 to 1.20 mum in size. The organisms exhibited an ultrastructure characteristic of prokaryotic bacteria-like cells. including a trilaminar cell wall, electron-dense periplasmic ribosome zone, and a DNA nucleoid. Reproductive stages, including transverse binary fission, were observed by TEM. These stages were frequently observed within membrane-bound cytoplasmic vacuoles. Hexagonal phage-like particles in the cytoplasm of RLOs were also observed. (C) 2004 Elsevier Inc. All rights reserved.
部门归属Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China; Zhejiang Univ, Coll Anim Sci, Hangzhou 310029, Peoples R China
关键词Crassostrea Ariakensis Oysters Rickettsia-like Organism Histology Ultrastructure Morphogenesis Phage-like Particles
学科领域Zoology
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收录类别sci
WOS记录号WOS:000222950500003
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被引频次:40[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4836
专题中科院边缘海地质重点实验室
通讯作者wuxz@zju.edu.cn
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GB/T 7714
Sun, JF,Wu, XZ,wuxz@zju.edu.cn. Histology, ultrastructure, and morphogenesis of a rickettsia-like organism causing disease in the oyster, Crassostrea ariakensis gould[J]. JOURNAL OF INVERTEBRATE PATHOLOGY,2004,86(3):77-86.
APA Sun, JF,Wu, XZ,&wuxz@zju.edu.cn.(2004).Histology, ultrastructure, and morphogenesis of a rickettsia-like organism causing disease in the oyster, Crassostrea ariakensis gould.JOURNAL OF INVERTEBRATE PATHOLOGY,86(3),77-86.
MLA Sun, JF,et al."Histology, ultrastructure, and morphogenesis of a rickettsia-like organism causing disease in the oyster, Crassostrea ariakensis gould".JOURNAL OF INVERTEBRATE PATHOLOGY 86.3(2004):77-86.
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