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Antifungal activity and molecular docking of phenol, 2,4-bis(1,1-dimethylethyl) produced by plant growth-promoting actinobacterium Kutzneria sp. strain TSII from mangrove sediments. | LitMetric

The present study reveals the plant growth-promoting (PGP) potentials and characterizes the antifungal metabolites of Kutzneria sp. strain TSII isolated from mangrove sediment soil through in vitro and in silico studies. In this study, Kutzneria sp. strain TSII was screened for PGP activities and the antifungal activities against Pithomyces atro-olivaceous, a leaf spot-associated pathogen in groundnut plants. The ethyl acetate extract of Kutzneria sp. strain TSII was purified using column chromatography, and the presence of various antimicrobial compounds was studied by gas chromatography-mass spectrometry (GC-MS) analysis. In silico modeling and docking were carried out to evaluate the antifungal potent of bioactive compound. Kutzneria sp. strain TSII produced proteases, phosphatases, ammonia, siderophores, cellulases, indole acetic acid (IAA), lipases, and amylases, indicating its ability to enhance the growth of plants. The ethyl acetate extract of Kutzneria sp strain TSII was found to be a potent inhibitor of fungal mycelial growth in the potato dextrose agar (PDA) plates. The GC-MS spectral study showed 24 antimicrobial compounds belonging to five chemical groups: phenolics, phthalates, fatty acid methyl esters (FAME), spiro, and fatty alcohols. In silico docking studies showed that phenol, 2,4-bis(1,1-dimethylethyl)-effectively attaches with the active site of mitochondrial FF Adenosine triphosphate synthase enzymes of Pithomyces atro-olivaceous. Hence, it is clear that these antifungal compounds shall be formulated shortly to treat many plant fungal diseases in an eco-friendly manner.

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http://dx.doi.org/10.1007/s00203-021-02397-1DOI Listing

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