Exemplary embodiments of the present disclosure are directed towards a composition comprising a Trichoderma asperellum TaDOR 673 isolate and optionally a carrier, diluent or an adjuvant, wherein the Trichoderma asperellum TaDOR 673 isolate is a thermotolerant and a saline-tolerant isolate. This novel isolate functions effectively as a biocontrol agent and a plant growth promoting agent capable of inducing abiotic stress tolerance in plants.