Avaliação do potencial uso de isolados do fungo Trichoderma spp. como agentes de crescimento em mudas de açaí (Euterpe oleracea Mart.)

Abstract

Species of the genus Trichoderma are widely distributed across the globe and have high technological value because they play an important role in biological control of phytopathogens and promotion of plant growth. In biological control, isolates of this genus have relevant characteristics that favor them in terms of survival in the environment, such as high adaptability to ecological conditions, potential to colonize the rhizosphere of plants, mycoparasitism and production of volatile and non-volatile metabolites. The promotion of plant growth by this genus occurs due to a variety of factors that may involve the production of vitamins or the conversion of materials into forms assimilable to plants, the absorption and transport of minerals. Also, through the production of auxins and metabolites such as 6- pentyl-α-pyrone (6PP), fungi of the genus Trichoderma favor the development of roots, making them deeper and more vigorous, providing greater tolerance to drought. Given such importance, the present work sought to highlight the efficiency of Trichoderma for biological control in different cultures, located in chapter 1; and to evaluate the potential of Trichoderma isolates in promoting the growth of açaí seedlings, located in chapter 2, also highlighting the need for studies focused on the Cerrado of Tocantins, as well as the isolation of native species in the region.