IJEP 44(13): 1162-1168 : Vol. 44 Issue. 13 (Conference 2024)
1. Graphic Era (Deemed to be University), Department of Microbiology, Dehradun – 248 802, Uttarakhand, India
2. Graphic Era (Deemed to be University), Department of Biotechnology, Dehradun – 248 802, Uttarakhand, India
3. Indian Council of Forestry Research and Education (ICFRE) – Forest Research Institute, Forest Pathology Discipline, Forest Protection Division, Dehradun – 248 006, Uttarakhand, India
Abstract
Actinobacteria are successful biocontrol agents extensively used for controlling various plant fungal diseases and also help in plant growth promotion. The major aims of this study were to explore the potential antagonistic capabilities and plant growth-promoting efficiency of five Actinobacterial isolates isolated from the rhizospheric soil of Pinus roxburghii, naturally occurring in Benog Wildlife Sanctuary under Mussoorie Forest Range, Uttarakhand. The target of this study was to assess their antagonistic effects against two fungal pathogens that is Pestalotiopsis species and Curvularia species. Out of the five actinobacterial isolates examined, 2 isolates referred to as FRI/BWS/S3A and FRI/BWS/S3B, exhibited the most remarkable antagonistic effects against Pestalotiopsis sp. and Curvularia sp. FRI/BWS/S3A showed the highest inhibition percent, which is 43% for Curvularia sp. (R5) and 37% for Pestalotiopsis sp. (R1). Additionally, all five isolates exhibited positive results in terms of their plant growth promoting (PGP) attributes, including phosphate solubilization, production of indole acetic acid (IAA), siderophore and hydrogen cyanide (HCN). The outcomes of this study highlight that actinobacterial isolates obtained from the rhizosphere of P. roxburghii possess the potential to exert antifungal effects on fungal pathogens in-vitro are discussed in this research paper and further studies are required to check their potential in the field for their application in agricultural and forestry sectors.
Keywords
Pinus roxburghii, Actinobacteria, Pestalotiopsis sp., Curvularia sp., antagonist, plant growth promotion
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