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首页> 外文期刊>Fisheries and Aquatic Sciences >Phenotypic Diversity of Vibrio ichthyoenteri Isolated from the Gastrointestinal Tract of Larval Olive Flounder Paralichthys olivaceus
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Phenotypic Diversity of Vibrio ichthyoenteri Isolated from the Gastrointestinal Tract of Larval Olive Flounder Paralichthys olivaceus

机译：从幼虫橄榄比目鱼Olivaceus胃肠道分离的ichthyoenteri弧菌的表型多样性

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摘要

Vibrio ichthyoenteri is a facultatively anaerobic gram-negative bacterium with straight or slightly curved rod morphology. The bacterium is an etiological agent of bacterial enteritis of Olive flounder Paralichthys olivaceus. Only a handful of studies, using a limited number of isolates, have investigated the phenotypic and genetic characteristics of V. ichthyoenteri. We isolated 40 V. ichthyoenteri strains, identified based on the 16S rRNA gene sequence, from the diseased flounder larvae and investigated the API 20E and ZYM profiles. The isolates exhibited highly divergent phenotypic characteristics regardless of sampling time point and location, and fish age. Essential enzymes produced by V. ichthyoenteri seemed to be alkaline phosphatase, leucine arylamidase, and N-acetyl- -glucosaminidase. This study reveals a much greater enzymatic and biochemical phenotype diversity than has been evident to date. These results suggest that a given population of V. ichthyoenteri could be heterogeneous in terms of its phenotypic characteristics.
机译：ichthyoenteri弧菌是一种兼性的厌氧革兰氏阴性细菌，具有直的或略微弯曲的杆状形态。该细菌是橄榄比目鱼Paralichthys olivaceus细菌性肠炎的病原体。只有少数研究使用有限数量的分离物，研究了ichichyoenteri的表型和遗传特征。我们从患病的比目鱼幼虫中分离了基于16S rRNA基因序列鉴定的40株ichthyoenteri菌株，并研究了API 20E和ZYM谱。分离物表现出高度不同的表型特征，而与采样时间点和位置以及鱼龄无关。 ichthyoenteri产生的必需酶似乎是碱性磷酸酶，亮氨酸芳酰胺酶和N-乙酰基-氨基葡萄糖苷酶。这项研究揭示了比迄今为止明显更大的酶和生化表型多样性。这些结果表明，给定种群的ichichyoenteri可能在表型特征上是异质的。

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