Antagonistic Activity against Plant Pathogenic Fungus by Various Indigenous Microorganisms from Different Cropping Systems in Soc Trang Province, Vietnam

Environment and Natural Resources Journal

Le Thi Xa¹  Nguyen Khoi Nghia² 

[1] Biotechnology Research and Development Institute, Can Tho University, Can Tho City, Vietnam;Department of Soil Science, College of Agriculture and Applied Biology, Can Tho University, Can Tho City, Vietnam ;

关键词: antagonism;    fungal plant pathogens;    fusarium oxysporum;    indigenous microorganism;    rhizoctonia solani;   

DOI  :  10.32526/ennrj.18.3.2020.23

来源: DOAJ

【 摘 要 】

This study assessed antagonistic capacity of various indigenous microorganisms (IMO)collectedfromdifferentcroppingsystemswithinSocTrangprovince against plant pathogenic fungus including Fusarium oxysporumand Rhizoctonia solani. Biocontrol activity of fifteen collected IMOs was investigated on PDA agar media for 5-7 days under laboratory conditions with three different scenarios. IMO and pathogenic fungus were incubated at the same time and IMO was introduced before and after inoculation of plant pathogenic fungus. The results illustrated that all surveyed IMOs were found to have highly potential biocontrol against two plant pathogenic fungi to different extents and IMOs which were introduced before the inoculation of pathogenic fungi showed the highest efficiency in biocontrol of plant pathogen.Particularly,fouroutoffifteenIMOswhichwerecollectedfrom bamboo,shallot,grapefruitandguavafarmsshowedtheirhighestantagonistic efficacy on Fusarium oxysporum biocontrol by completely decaying fungal hyphae of this fungal strain after seven incubation days. For Rhizoctonia solani,all IMOs displayed highly antagonistic ability with inhibitory percentages varying between 52.96% and 92.59% after twodays.The antagonisticfunctionsof all collected IMOs could be exploited for plant protection from plant-pathogenic fungus.

【 授权许可】

Unknown