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Characterization of Soil Microorganism from Humus and Indigenous Microorganism Amendments

Mycobiology 2020년 48권 5호 p.392 ~ 398
Jan Umair, Rui Feiwen, Jan Masood, 천세철,
소속 상세정보
 ( Jan Umair ) - Konkuk University Department of Systems Biotechnology
 ( Rui Feiwen ) - Konkuk University Department of Envrionmental Health Science
 ( Jan Masood ) - Southern University of Science and Technology Department of Biological Sciences
천세철 ( Chun Se-Chul ) - Konkuk University Department of Envrionmental Health Science

Abstract


This study was conducted to understand the dynamics of microbial communities of soil microorganisms, and their distribution and abundance in the indigenous microorganisms (IMOs) manipulated from humus collected from the forest near the crop field. The soil microorganisms originated from humus and artificially cultured microbial-based soil amendments were characterized by molecular and biochemical analyses. The bacterial population (2?×?106∼13?×?106 CFU/g sample) was approximately 100-fold abundant than the fungal population (2?×?104∼8?×?104 CFU/g sample). The 16S rDNA and ITS sequence analyses showed that the bacterial and fungal communities in humus and IMOs were mainly composed of Bacillus and Pseudomonas, and Trichoderma and Aspergillus species, respectively. Some of the bacterial isolates from the humus and IMOs showed strong inhibitory activity against soil-borne pathogenic fungi Fusarium oxysporum and Sclerotinia sclerotiorum. These bacteria also showed the siderophore production activity as well as phosphate solubilizing activity, which are requisite traits for biological control of plant pathogenic fungi. These results suggest that humus and IMOs could be a useful resource for sustainable agriculture.

키워드

Antifungal activity; biocontrol; indigenous microorganisms (IMO)

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