变化菌种 (Bacillus changyiensis) sp. 这种菌种是 从沿海沉积物中分离出来的nov
Guiqian Xiao1, Qiliang Lai2, Guangyu Li2
1Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China.
International journal of systematic and evolutionary microbiology
|October 13, 2023
概括
从沿海沉积物中分离出了两种新型细菌菌株,即CLL-3-40T和CLL-7-23. 菌株CLL-3-40T代表了一种新的物种,Bacillus changyiensis,在抑制水产养殖病原体方面具有潜在的应用.
科学领域:
- 微生物学 微生物学
- 细菌的分类学 细菌的分类学
- 环境微生物学 环境微生物学
背景情况:
- 沿海沉积物是微生物多样性的丰富储库.
- 细菌属包括各种各样的物种,具有重要的工业和环境作用.
- 识别新型细菌物种对于理解微生物生态系统和发现新的生物活性化合物至关重要.
研究的目的:
- 从中国的沿海沉积物中分离和描述新型细菌.
- 确定分离物体的遗传学和基因型关系.
- 评估新物种在生物技术应用中的潜力.
主要方法:
- 从沿海沉积物样本中分离和培养细菌.
- 16S rRNA基因测序用于遗传学分析.
- 表型特征包括生长条件,生物化学测试和细胞脂肪酸分析.
- 基因组分析包括DNA-DNA杂交和G+C含量确定.
- 对水产养殖病原体的抗微生物活性评估.
主要成果:
- 他们分离了两种格拉姆阳性,选择性无氧,形成内胞的细菌,分别是CLL-3-40T和CLL-7-23菌株.
- 遗传学分析将这些菌株置于 *Bacillus * 属内,与 *Bacillus licheniformis * 群相关.
- 菌株CLL-3-40T对广泛的温度 (15-50°C) 和pH (5-9) 和高达12%的NaCl.表现出耐受性.
- 菌株CLL-3-40T的乙烯酸提取物显示出对致病性vibrios的抑制活性.
- 基因型数据 (DNA-DNA杂交 < 21.9%,ANI < 48.4%) 证实了CLL-3-40T菌株作为一个独特的物种.
- 在CLL-3-40T菌株中,G+C含量为38.4%.
- 在菌株CLL-3-40T中预测了12个生物合成基因集群.
结论:
- 菌株CLL-3-40T代表了一种名为*Bacillus changyiensis* sp.的新型*Bacillus*属的新物种. 在新的一年里.
- 这种新物种具有适合在充满挑战的环境中生长的特征.
- 观察到的抗微生物活性表明,在水产养殖疾病管理中,Bacillus changyiensis可能存在.
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