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首页> 外文期刊>Indian Journal of Microbiology >Ecological Significance of Microdiversity: Coexistence Among Casing Soil Bacterial Strains Through Allocation of Nutritional Resource
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Ecological Significance of Microdiversity: Coexistence Among Casing Soil Bacterial Strains Through Allocation of Nutritional Resource

机译：微生物多样性的生态意义：通过营养资源的分配，在套管土壤细菌菌株中共存

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摘要

A combination of cultivation-based methods with a molecular biological approach was employed to investigate whether bacteria with identical 16S rRNA gene sequences can represent distinct eco- and genotypes. A set of eight bacterial strains wherein three were Pseudomonas putida and rest were Acinetobacter calcoaceticus, were isolated from casing soils community by conventional plating. These strains had identical 16S rRNA gene sequences and represented the dominant phylotype in the plateable fraction. Each strain utilized a specific combination of 154 carbon substrates, and the niche overlap indices were low, suggesting that each strain occupied a different ecological niche. Our results have implications for assessment of the diversity and biogeography of bacteria and increase the perception of natural diversity beyond the level of 16S rRNA gene sequences. It is worthwhile approach to explore prokaryotic diversity in different ecological niches.
机译：基于栽培的方法与分子生物学方法相结合，以调查具有相同的16S rRNA基因序列的细菌是否可以代表不同的生态型和基因型。通过常规接种从肠衣土壤群落中分离出一组八株细菌菌株，其中三株为恶臭假单胞菌，其余为钙乙酸不动杆菌。这些菌株具有相同的16S rRNA基因序列，并代表了可接种部分中的优势系统型。每个菌株利用154种碳底物的特定组合，并且生态位重叠指数很低，表明每个菌株都占据了不同的生态位。我们的研究结果对评估细菌的多样性和生物地理学具有重要意义，并增加了对自然多样性的认识，超出了16S rRNA基因序列的水平。探索不同生态位中的原核生物多样性是值得的。

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