ANTAGONISTIC ACTIVITY OF FUNGI FROM ANTHRACNOSE LESIONS ON PAULLINIA CUPANA AGAINST COLLETOTRICHUM sp.

Autor(es)

Bonatelli, M. L. ; Tsui, S. ; Marcon, J. ; Batista, B. D. ; Kitajima, E. W. ; Pereira, J. O. ; Azevedo, J. L. ; Quecine, M. C.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PLANT PATHOLOGY; v. 98, n. 2, p. 197-205, 2016.
• Citações Web of Science: 3

Resumo

Anthracnose is a cosmopolitan disease caused by Colletotrichum spp. that affects many crops worldwide. Observations have shown that anthracnose leaf lesions may be colonized by several non-pathogenic microorganisms. The relationship of these microorganisms with the pathogen as well as their potential as biocontrol agents is not well known. Guarana (Paullinia cupana Mart. var. sorbilis) is a typical native Amazon crop with unknown microbial diversity. Guarana productivity has been reduced by a fungal disease caused by Colletotrichum sp. In this study, we isolated 15 fungi from guarana anthracnose leaf lesions that belong to five genera: Fusarium, Phomopsis, Leptosphaeria, Microdochium and Pestalotiopsis. Four isolates from the Fusarium sp. (C6 and C10), Pestalotiopsis sp. (C3), and Microdochium sp. (P7) consistently inhibited anthracnose fungal growth in vitro. Except for the Microdochium sp. (P7), these isolates were also able to inhibit the growth of the pathogen in in vivo assays using detached guarana leaves. Some mechanisms related to the growth inhibition of this pathogen were studied. Fusarium sp. (C6) produced chitinases; Fusarium sp. (C6, C10) and Pestalotiopsis sp. (C3) produced antagonistic volatile organic compounds. These three isolates also inhibited the growth of Fusarium spp., a pathogen of several plant species, suggesting their potential broad range of growth inhibition of other phytopathogens. (AU)

• Processo FAPESP: 10/50445-0 - Estado da variabilidade genética de Puccinia psidii Winter, agente causal de ferrugem em Eucalyptus spp.
• Beneficiário: Maria Carolina Quecine Verdi
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 11/18740-5 - Detecção e Caracterização de Quitinases em bibliotecas metagenomicas de Manguezais do Estado de São Paulo.
• Beneficiário: Joelma Marcon
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 11/05204-8 - Promoção de crescimento vegetal por rizobactérias do guaranazeiro
• Beneficiário: Bruna Durante Batista
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/15192-4 - Estudo da diversidade de bactérias endofíticas cultiváveis associadas ao guaranazeiro [Paullinia cupana (Mart.) Ducke.] visando o controle de antracnose
• Beneficiário: Sarina Tsui
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 09/53376-2 - Microrganismos associados ao guaranazeiro com potencial biotecnológico e agrícola, especialmente visando o controle da antracnose
• Beneficiário: Elliot Watanabe Kitajima
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/14382-4 - Microrganismos endofíticos cultiváveis e não cultiváveis do guaranazeiro e o controle da antracnose.
• Beneficiário: Maria Leticia Bonatelli
• Modalidade de apoio: Bolsas no Brasil - Mestrado