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克里西奥细菌 (Chryseobacterium gossypii) sp. sp. 的种类. nov. 一种从长期连续耕种棉花田中分离出来的细菌
Mila Mulati1, Delong Kong1, Lili Chai1
1College of Life Sciences, Xinjiang Normal University/Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi 830046, PR China.
概括
在中国发现了一种新型细菌Chryseobacterium gossypii 1RM2T. 这种新物种表现出独特的生长条件和遗传构成,扩大了Chryseobacterium属.
科学领域:
- 微生物学 微生物学
- 细菌学 细菌学是一门学科.
- 基因组学就是基因组学.
背景情况:
- *Chryseobacterium*属包括各种格拉姆阴性细菌,其中一些是植物相关或机会性病原体.
- 准确的分类学分类对于理解细菌在生态系统中的作用和潜在的临床相关性至关重要.
研究的目的:
- 来自中国新疆省的一种新型细菌隔离物的特征.
- 通过多相性表征来确定新型菌株的分类学位置.
主要方法:
- 新型细菌的隔离和培养 (菌株1RM2T).
- 物理化学性质分析 (温度,pH,盐度耐受性).
- 16S rRNA基因测序,全基因组测序,平均核酸标识 (ANI) 和DNA-DNA杂交 (DDH) 用于遗传学分析.
- 脂肪酸,异oprenoid和极性脂质的概况为化学分类学识别.
主要成果:
- 菌株1RM2T在广泛的温度范围 (20-45°C),pH值 (5.0-10.0),NaCl度 (0-10%) 中表现出增长.
- 基于16S rRNA基因序列的遗传学分析显示,与*Chryseobacterium bernardetii* (97.1%) 和*Chryseobacterium daecheongense* (96.9%) 的相似性最高.
- ANI和DDH值低于物种划分的门值,支持其作为新物种的地位. 该基因组的G+C含量为39.5mol%.
- 化学分类学分析揭示了特征性的脂肪酸 (iso-C15:0,iso-C17:03-OH),menaquinone-6和特定的极性脂质.
结论:
- 菌株1RM2T代表了属 *Chryseobacterium* 的新物种.
- 这种新物种的拟议名称是*Chryseobacterium gossypii* sp. 新的,与类型菌株GDMCC 1.4437T (=KCTC 102275T) 相关.
- 这一发现有助于对*Chryseobacterium*属的多样性知识.
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