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凡纳滨对虾的微生物群：太平洋白虾（凡纳滨对虾）的消化道微生物群落

Microbiota from Litopenaeus vannamei: digestive tract microbial community of Pacific white shrimp (Litopenaeus vannamei).

作者信息

Tzuc Jaqueline Tuyub, Escalante Diana Rendíz, Rojas Herrera Rafael, Gaxiola Cortés Gabriela, Ortiz Maria Leticia Arena

机构信息

Unidad Multidisciplinaria de Docencia e Investigación (UMDI), Universidad Nacional Autónoma de México (UNAM), Puerto de Abrigo s/n, Sisal, Yucatan Mexico.

Campus de Ingenierías y Ciencias Exactas, Universidad Autónoma de Yucatán. Facultad de Ingeniería Química, Periférico Norte Kilómetro 33.5, Tablaje Catastral 13615, Col. Chuburná de Hidalgo Inn., C.P. 97203 Mérida, Yucatán México.

出版信息

Springerplus. 2014 Jun 2;3:280. doi: 10.1186/2193-1801-3-280. eCollection 2014.

DOI:10.1186/2193-1801-3-280
PMID:24955302
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4062704/
Abstract

Bacteria capable of producing different extracellular enzymes of potential relevance in digestive processes were isolated from the stomach, hepatopancreas and intestine of Pacific white shrimp Litopenaeus vannamei. A total of 64 strains with proteolytic activity were isolated and grouped into 16 clusters based on morphological characteristics: 4 groups were isolated from the intestine; 5 from the hepatopancreas; and 7 from the stomach. Molecular methods (16S rRNA gene amplification and sequencing) and phenotypic criteria (Gram stain, catalase and oxidase tests, cell and colony morphology) were used to identify strains, which corresponded to Pseudoalteromonas and Vibrio genera. These genera are reported to form part of the digestive tract microbial community in shrimp. Both genera were isolated from all three tested tissues. One member of each morphologic group was selected for analysis of the presence of amylases, lipases/esterases and chitinases. Most of the strains had all the tested enzymes, indicating that the L. vannamei digestive tract microbiotic flora includes groups which have the potential to contribute to the degradation of dietary components.

摘要

从南美白对虾凡纳滨对虾的胃、肝胰腺和肠道中分离出了能够产生在消化过程中具有潜在相关性的不同细胞外酶的细菌。共分离出64株具有蛋白水解活性的菌株，并根据形态特征分为16个簇：4组从肠道分离；5组从肝胰腺分离；7组从胃分离。使用分子方法（16S rRNA基因扩增和测序）和表型标准（革兰氏染色、过氧化氢酶和氧化酶试验、细胞和菌落形态）对菌株进行鉴定，这些菌株对应于假交替单胞菌属和弧菌属。据报道，这些属是虾消化道微生物群落的一部分。这两个属均从所有三个测试组织中分离出来。从每个形态学组中选择一个成员来分析淀粉酶、脂肪酶/酯酶和几丁质酶的存在情况。大多数菌株都含有所有测试的酶，这表明凡纳滨对虾消化道微生物菌群包括有潜力促进膳食成分降解的菌群。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e61/4062704/2f2e3760a52e/40064_2014_1000_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e61/4062704/ea8ce56bd04f/40064_2014_1000_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e61/4062704/2f2e3760a52e/40064_2014_1000_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e61/4062704/ea8ce56bd04f/40064_2014_1000_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e61/4062704/2f2e3760a52e/40064_2014_1000_Fig2_HTML.jpg

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