另一个是Alteromonas salexigens sp. Nov.,从沿海海水中分离出来
Liping Sun1, Xinyuan Hu1, Qin Wang1
1College of Animal Science, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
Archives of microbiology
|August 23, 2023
概括
一种新的海洋细菌Alteromonas salexigens sp.nov.从黄海中分离出来. 基因组和表型分析证实它代表了Alteromonas属内的新物种.
科学领域:
- 微生物学 微生物学
- 海洋生物学 海洋生物学
- 基因组学就是基因组学.
背景情况:
- 海洋环境是多样化的微生物生命的庇护所.
- 阿尔托莫纳斯属包括重要的海洋细菌,具有各种生态作用.
- 孤立和描述新型海洋细菌有助于了解海洋生物多样性.
研究的目的:
- 从黄海中分离和描述一种新型细菌.
- 通过植物遗传学,基因组学和化学分类学分析来确定分离物的分类学位置.
- 在Alteromonas属内提出一种新物种.
主要方法:
- 从沿海海水中分离出细菌.
- 基于16S rRNA基因序列的遗传学分析.
- 基因组测序和分析草案 (DNA G+C含量,基因含量).
- 表型特征 (生长条件,形态学).
- 化学分类学分析 (脂肪酸,极性脂质,呼吸道).
- 数字DNA-DNA杂交和平均核酸同一性的计算.
主要成果:
- 隔离了一种格拉姆阴性,有氧,短杆状细菌 (ASW11-19T).
- 在37°C,3.0-5.0%NaCl和pH7.5.5下观察到最佳生长.
- 遗传学分析将该菌株置于Alteromonas属内,与A. profundi和A. fortis密切相关.
- 基因组数据显示了3.55 Mb的基因组,其中包含3150个蛋白质编码基因和44.4%的DNA G+C含量.
- 数字DNA-DNA杂交和ANI值低于物种划分值.
- 主要脂肪酸包括总的特征3和8,和C16:0;ubiquinone 8是唯一的呼吸系统.
- 极地脂质包括酸乙醇胺,酸糖醇,酸和两个身份不明的脂质.
结论:
- 菌株ASW11-19T代表Alteromonas属的一种新型物种,基于综合的基因组,表型和化学分类学数据.
- 这种新物种的建议名称是Alteromonas salexigens sp.nov.
- 这一发现扩大了已知的Alteromonas属内的多样性,并突出了黄海的微生物丰富性.
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