National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Soil microorganisms play a role in decomposition, nutrient cycling, and the transformation of organic chemical residues. The present investigation characterized culturable bacterial, fungal and actinobacterial populations in soils representing ten land-use sites in and around Don Bosco College of Agriculture (DBCA), Sagayathottam, Ranipet District, Tamil Nadu, and assessed their potential relevance as indigenous microbial resources for future xenobiotic-biodegradation studies. Methods: Composite soil samples were collected from 0–15 cm depth and serially diluted. Bacteria, fungi and actinobacteria were enumerated by spread plate technique on Nutrient Agar, Rose Bengal Agar and Ken Knight’s Agar, respectively. Three replications were evaluated for each site, and site effects were assessed by analysis of variance. Results revealed that Bacterial populations highest value 14.98 × 10⁻5 CFU g⁻¹ soil, recorded in the sapota field. Fungal populations recorded 24.55 × 10⁻² CFU g⁻¹ soil, which is highest value. Actinobacterial populations ranged from 6.46 to 15.92 × 10⁻3 CFU g⁻¹ soil, with the highest value in the crop cafeteria and the lowest in the sapota field. A predominant fungal isolate was morphologically identified as Aspergillus niger. Culturable microbial populations differed substantially among land-use sites, indicating site-specific microbial profiles. The findings provide a preliminary basis for selecting indigenous microorganisms for future xenobiotic-degradation screening; however, direct degradation of specific xenobiotic compounds was not demonstrated in this study.
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