Thekey differencebetween枯草芽孢杆菌和Bacillus cereusis that枯草芽孢杆菌正在发酵mannitol, but it lacks the ability to produce enzyme lecithinase whileBacillus cereusis not fermenting mannitol, but it produces enzyme lecithinase.
Bacillus是一个genus of gram-positive, rod-shaped bacteria. They are members of phylum Firmicutes. There are 266 named species.Bacillus物种可以依赖氧强制性的氧化铝或者兼性厌氧。Bacillusspecies produce endospores. These species can reduce themselves to oval endospores and can remain dormant for years. The endospores are resistant to heat, radiation, desiccation, and disinfectants.枯草芽孢杆菌和Bacillus cereus是该属的两种类型Bacillus。
内容
1.Overview and Key Difference
2.什么是枯草芽孢杆菌
3.What is Bacillus Cereus
4.Similarities – Bacillus Subtilis and Bacillus Cereus
5.枯草芽孢杆菌与蜡状芽孢杆菌的表格形式
6。Summary – Bacillus Subtilis vs Bacillus Cereus
What isBacillus Subtilis?
枯草芽孢杆菌是一种革兰氏阳性,棒状的,甘露醇的发酵细菌,缺乏产生酶卵磷脂酶的能力。它也是过氧化氢酶阳性。这种细菌通常在反刍动物和人类的土壤和胃肠道中发现。该细菌会产生坚固而保护性的内孢子。这使其可以忍受恶劣的环境条件。B.枯草脂has been classified as an obligate aerobe historically though evidence exists to prove it is a facultative anaerobe. It is one of the best bacteria that can be used in secreted enzyme production. Therefore, it is involved in industrial scale biotechnological productions. Moreover, this bacterium is a highly popular modal organism. It produces white colonies in nutrient agar.
B.枯草脂can divide symmetrically through binary fission to make two daughter cells. The endospore of this bacterium can remain viable for decades and is resistant to unfavourable conditions such as drought, salinity, extreme pH, radiation, and solvents. Scientists have studied the replication of a single circular chromosome of this bacterium as a model organism and have found that the replication ofB.枯草脂proceeds bidirectionally, and replication terminates due to a sequence in the terminus region of DNA (Ter site) of this bacterium. Furthermore,B.枯草脂基因组有大约4,100个基因。在这些细菌中也可以观察到自然细菌转化过程。在替代医学中,该细菌用于模拟广谱免疫活性。它激活了特定抗体(例如IgM,IgG和IgA)的分泌,并诱导干扰素IFN-α/IFNγ,显示出对肿瘤的细胞毒性。首先还从B.枯草脂。Other than that, it is widely used for enzyme production, such as amylase and protease. It is also used as probiotics and soil inoculants, and bio fungicides in agriculture.
What isBacillus Cereus?
Bacillus cereus是一个gram-positive, rod-shaped mannitol non-fermenting bacterium that produces the lecithinase enzyme. It is also a facultatively anaerobic, motile, beta haemolytic spore-forming bacterium. It is commonly found in soil and food. Some strains of them are highly pathogenic and cause foodborne illness in humans. The virulent factors of this bacterium include cereolysin and phospholipase C. Some strains are beneficial as probiotics.
A population ofBacillus cereuscan double their number at 30 °C within 20 minutes depending on food products.B. cereusproduces off white colonies in nutrient agar. The genome size ofB. cereus约为5-7.9,大约5397个基因。此外,该细菌还具有圆形染色体。
之间有什么相似之处Bacillus Subtilis和Bacillus Cereus?
- 枯草芽孢杆菌和Bacillus cereusare two bacteria belonging to the genusBacillus。
- 两者都是革兰氏阳性和杆状的。
- They are motile.
- They possess flagella.
- 两者都是β-溶血细菌。
- They form endospores.
- 两者都用作益生菌。
What is the Difference BetweenBacillus Subtilis和Bacillus Cereus?
枯草芽孢杆菌正在发酵甘露醇,但缺乏产生酶卵磷脂酶的能力。另一方面, Bacillus cereusis not fermenting mannitol, but it produces the enzyme lecithinase. So, this is the key difference between枯草芽孢杆菌和Bacillus cereus。此外,枯草芽孢杆菌is non-pathogenic to humans. ButBacillus cereusis pathogenic to humans. Thus, this is another significant difference between枯草芽孢杆菌和Bacillus cereus。
The below infographic compiles the differences between枯草芽孢杆菌和Bacillus cereusin tabular form.
Summary – Bacillus Subtilis vs Bacillus Cereus
Bacillus是一个genus of gram-positive and rod-shaped bacteria.枯草芽孢杆菌和Bacillus cereusare two types of bacterial species belonging to the genusBacillus。枯草芽孢杆菌是一个non-pathogenic bacterium that ferments mannitol, but it lacks the ability to produce enzyme lecithinase. In contrast,Bacillus cereus是一个pathogenic bacterium that does not ferment mannitol but produces enzyme lecithinase. Thus, this is the summary of the difference between枯草芽孢杆菌和Bacillus cereus。
Reference:
1.“Bacillus Subtilis”。概述| ScienceDirect主题。
2. Bottone, Edward J. “Bacillus Cereus, a Volatile Human Pathogen。” Clinical Microbiology Reviews, American Society for Microbiology (ASM).
Image Courtesy:
1.“”枯草芽孢杆菌by togopic” By Database Center for Life Science (DBCLS)(CC BY 3.0)via Commons Wikimedia
2. “蜡状芽孢杆菌Sem-Cr” By Mogana Das Murtey and Patchamuthu Ramasamy – [1](CC BY-SA 3.0)via Commons Wikimedia
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