ABSTRACT
Globally almost 1.5 million of fungal species has distributed, but only 5% of species are discovered. The generic name of Trichoderma and Hypocrea are considered as different genera; several species have commonly linked as asexual and sexual morphs of one and the same species. Trichoderma is free-living fungi and ubiquitously existed in all ecosystems, especially in soils. The potential Trichoderma species has applied multidisciplinary applications with different branches including in agriculture, industry, and medicine. Biodiversity study of Trichoderma community can be considered as the main prerequisite for exploitation of the genus in biological applications. The distribution and colonization of Trichoderma strains are mostly influenced by the several ecological parameters such as pH, moisture, soil temperature, organic matter, atmosphere, nutrient content and plant types. Trichoderma harzianum is a ubiquitous asexual fungus and applied as a biocontrol agent against several plant-pathogenic fungi.
