伪菌 (Pseudocitrobacter cyperus) 是一种新型细菌物种,在埃及从Cyperus alternifolius中发现
1Microbiology and Immunology Department, October University for Modern Sciences and Arts (MSA), Giza, Egypt. satwa@msa.edu.eg.
BMC microbiology
|January 14, 2025
概括
一种新型的内菌,Pseudocitrobacter cyperus sp. 这种新型的内菌是 Pseudocitrobacter cyperus sp. (Cyp38ST),是在Cyperus alternifolius中发现的. 这种潜在的人类病原体拥有独特的β-乳糖酶基因,扩大了微生物多样性知识.
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:
- 一种新型的细菌菌株Cyp38ST从尼罗河沿岸的一种植物Cyperus alternifolius中分离出来.
- 初步分析表明,它属于Pseudocitrobacter属.
研究的目的:
- 在分类学上分类孤立的菌株Cyp38ST.
- 描述其基因组,生物化学和抗菌性质.
- 为了确定它是否代表了Pseudocitrobacter属内的新物种.
主要方法:
- 使用VITEK®2,MALDI-TOF-MS和16S rRNA基因测序进行菌株鉴定.
- 基因组测序 (DNBseq) 和整体基因组相关性指数 (OGRIs) 的计算,包括平均核酸标识 (ANI) 和数字DNA-DNA杂交 (dDDH).
- 生物化学特征的表征,抗微生物敏感性和脂肪酸甲基乙的概况.
主要成果:
- 遗传学分析和OGRI表明,Cyp38ST不符合已知Pseudocitrobacter物种的物种划分门.
- 遗传学分析显示,Cyp38ST 在Pseudocitrobacter属中形成了一个独特的集群.
- 该菌株被确定为潜在的人类病原体,携带独特的beta-lactamase编码基因.
结论:
- 建议Cyp38ST作为一种新物种Pseudocitrobacter cyperus sp.的类型菌株. 在新的一年里.
- 提供了这个新物种的完整基因组序列和注释.
- 这一发现强调了内菌在揭示未经表征的微生物多样性的重要性.
相关概念视频
Bacterial Phylum Planctomycetes
Planctomycetes are a group of morphologically distinct bacteria predominantly classified into two orders: Planctomycetales and Brocadiales. These gram-negative bacteria exhibit unique features, including division by budding and the presence of stalks or appendages. Their cells are often found in rosette arrangements, and they are notable for possessing an S-layer in their cell envelope, which is relatively uncommon among bacteria. Additionally, Planctomycetes frequently exhibit intracellular...
Bacterial Phylum Spirochaetes
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
Bacterial Phylum Cyanobacteria
Cyanobacteria are a diverse group of oxygenic, phototrophic bacteria that played a pivotal role in converting Earth’s atmosphere from anoxic to oxygen-rich billions of years ago. They exhibit remarkable morphological diversity, ranging from unicellular forms to filamentous types, with cell sizes varying between 0.5 μm and 100 μm. Cyanobacteria are classified into five groups: Chroococcales (unicellular, dividing by binary fission), Pleurocapsales (unicellular, dividing by multiple fission),...
Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
Bacterial Phylum Bacteroidota
The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...
Bacterial Phylum Tenericutes
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...


