This article presents an approach on the use of biological control applying the action of bacteria against Corynespora cassiicola (Bert & Curt) Wei, as this is one of the main phytopathogen of aerial propagation that limits the productivity of solanaceous plants. The use of bacteria in the control of solanaceous diseases is a widespread methodology, since the biocontrol of phytopathogen carried out by bacteria can occur through different mechanisms such as inhibition by antibiotics, parasitism, competition for physical space or induction of plant resistance to pathogen attack. This research aimed to select, identify and evaluate in vitro and in plant antagonist bacteria with potential for the development of a bioproduct that contributes to the sustainable agricultural development of tomatoes. In plant collections and tests were carried out at the Dr. Alejo von Der Pahlen, KM 14 on road AM 010 (S: 02° 59' 45.7" and W: 60° 01' 22.3"). The in vitro tests were carried out at Embrapa Western Amazon. The results indicate that Bacillus amyloliquefaciens showed 75.73% of in vitro inhibition of C. cassiicola and 56% of target spot control when compared to Microbacterium resistens and Stenotrophomonas maltophilia in tests on tomato.
Este artigo apresenta uma abordagem sobre o uso de controle biológico aplicando a ação de bactérias contra Corynespora cassiicola (Bert & Curt) Wei pois este é um dos principais fitopatógenos de propagação aérea que limita a produtividade das solanáceas. A utilização de bactérias no controle de doenças em solanáceas é uma metodologia em difusão, pois o biocontrole de fitopatógenos realizado por bactérias pode ocorrer por diferentes mecanismos como a inibição por antibióticos, o parasitismo, a competição pelo espaço físico ou a indução de resistência da planta ao ataque de patógenos. Esta pesquisa visou selecionar, identificar e avaliar in vitro e in planta bactérias antagonistas com potencial para desenvolvimento de um bioproduto que contribua para o desenvolvimento agrícola sustentável de tomate. As coletas e os testes in planta foram realizadas na Estação Experimental de Hortaliças Dr. Alejo von Der Pahlen, KM 14 da estrada AM 010 (S: 02° 59’ 45,7” e W: 60° 01’ 22,3”). Os testes in vitro foram realizados na Embrapa Amazônia Ocidental. Os resultados indicam que o Bacillus amyloliquefaciens, apresentou 75,73% de inibição do C. cassiicola in vitro e 56% de controle da mancha-alvo quando comparado ao Microbacterium resistens e a Stenotrophomonas maltophilia nos testes em tomateiro.
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