食品科学 ›› 2018, Vol. 39 ›› Issue (20): 140-145.doi: 10.7506/spkx1002-6630-201820021

• 生物工程 • 上一篇    下一篇

基于高通量测序分析虾夷扇贝柱菌群结构及腐败优势菌

江艳华1,王联珠1,许东勤1,2,李风铃1,翟毓秀1,张媛3,姚琳1,*   

  1. (1.中国水产科学研究院黄海水产研究所,农业部水产品质量安全检测与评价重点实验室,山东 青岛 266071;2.上海海洋大学食品学院,上海 201306;3.獐子岛集团股份有限公司,辽宁?大连 116011)
  • 出版日期:2018-10-25 发布日期:2018-10-24
  • 基金资助:
    “十二五”国家科技支撑计划项目(2015BAD17B03)

Analysis of the Bacterial Flora Structure and Dominant Spoilage Bacteria in Adductors of Patinopecten yessoensis Using High-Throughput Sequencing

JIANG Yanhua1, WANG Lianzhu1, XU Dongqin1,2, LI Fengling1, ZHAI Yuxiu1, ZHANG Yuan3, YAO Lin1,*   

  1. (1. Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;2. College of Food Scinence and Technology, Shanghai Ocean University, Shanghai 201306, China;3. Zhangzidao Group Co. Ltd., Dalian 116011, China)
  • Online:2018-10-25 Published:2018-10-24

摘要: 为揭示虾夷扇贝柱的菌群结构及腐败优势菌,通过对宏基因组DNA进行高通量测序,分析虾夷扇贝柱新鲜和腐败样品的菌群结构,同时对可培养细菌菌群基因组DNA进行高通量测序,分析新鲜和腐败样品可培养细菌菌群的结构特征。结果表明,对宏基因组测序后获得的新鲜虾夷扇贝柱中细菌菌群多样性丰富,其中相对丰度较高的有Candidatus kuenenia(10.73%)、弧菌属(Vibrio,8.15%)、别弧菌属(Aliivibrio,7.38%)、芽孢杆菌属(Bacillus,7.20%)和未分类菌(unclassified,16.08%);4?℃的腐败优势菌为发光杆菌属(Photobacterium,46.91%)、别弧菌属(36.82%)和假交替单胞菌属(Pseudoalteromonas,11.01%),15?℃的腐败优势菌为发光杆菌属(46.97%)和别弧菌属(43.33%),25?℃的腐败优势菌为发光杆菌属(41.94%)、别弧菌属(23.10%)、梭杆菌属(Fusobacterium,18.61%)和乳酸菌属(Lactobacillus,10.60%)。对可培养细菌菌群基因组测序后发现,新鲜样品可培养细菌菌群多样性大大降低,大部分为假交替单胞菌属(89.46%),在25?℃腐败后,可培养的腐败优势菌为弧菌属(50.98%)、希瓦氏菌属(Shewanella,17.43%)和乳酸菌属(10.68%)。本研究揭示了虾夷扇贝柱新鲜及腐败样品的菌群结构特征及腐败优势菌,为进一步研究微生物对虾夷扇贝柱品质劣化的作用机制提供一定参考。

关键词: 虾夷扇贝柱, 高通量测序, 菌群多样性, 腐败优势菌

Abstract: This study aimed to reveal the structure of bacterial flora and dominant spoilage bacteria in adductors of the scallop Patinopecten yessoensis. The total bacterial flora of fresh and spoiled scallop adductors were analyzed via high-throughput sequencing of metagenomic DNA, as well as the culturable bacterial flora via high-throughput sequencing of total cultured colonies’ genomic DNA. The results based on metagenomic DNA showed that the diversity of bacterial flora in fresh samples was relatively high, among which, the genera with high relative abundance were Candidatus kuenenia (10.73%), Vibrio (8.15%), Aliivibrio (7.38%), Bacillus (7.20%) and unclassified (16.08%). The dominant spoilage bacteria at 4 ℃ were Photobacterium (46.91%), Aliivibrio (36.82%) and Pseudoalteromonas (11.01%). The dominant spoilage bacteria at 15 ℃ were Photobacterium (46.97%) and Aliivibrio (43.33%). The dominant spoilage bacteria at 25 ℃ were Photobacterium (41.94%), Aliivibrio (23.10%), Fusobacterium (18.61%) and Lactobacillus (10.60%). The results from cultured colonies’ genomic DNA sequencing revealed that the diversity of culturable bacteria flora in fresh samples, which was dominated by Pseudoalteromonas (89.46%), was significantly decreased. The culturable dominant spoilage bacteria during storage at 25 ℃ were Vibrio (50.98%), Shewanella (17.43%) and Lactobacillus (10.68%). The findings of this study can provide a basis for further investigating the mechanism of microbial quality?deterioration in adductors of P. yessoensis.

Key words: adductor of Patinopecten yessoensis, high-throughput sequencing, diversity of bacterial flora, dominant spoilage bacteria

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