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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Bonatelli, M. L. ; Tsui, S. ; Marcon, J. ; Batista, B. D. ; Kitajima, E. W. ; Pereira, J. O. ; Azevedo, J. L. ; Quecine, M. C.
Total Authors: 8
Document type: Journal article
Source: JOURNAL OF PLANT PATHOLOGY; v. 98, n. 2, p. 197-205, 2016.
Web of Science Citations: 3
Abstract

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)

FAPESP's process: 10/14382-4 - Culturable and nonculturable endophytic microorganisms of guarana and the anthracnose control
Grantee:Maria Leticia Bonatelli
Support type: Scholarships in Brazil - Master
FAPESP's process: 10/15192-4 - Study of the diversity of culturable endophytic bacteria associated with guarana [Paullinia cupana (Mart.) ducke.] for the control of anthracnose
Grantee:Sarina Tsui
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 11/18740-5 - Detection and characterization of chitinases in metagenomics libraries from mangrove located in the State of São Paulo
Grantee:Joelma Marcon
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/05204-8 - Plant growth promotion by rhizobacteria of guarana
Grantee:Bruna Durante Batista
Support type: Scholarships in Brazil - Master