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Tozze Junior H.J.,University of Sao Paulo | Firmino A.C.,Sao Paulo State University | Fischer I.H.,Polo Of Desenvolvimento Tecnologico Dos Agronegocios Do Centro Oeste | Furtado E.L.,Sao Paulo State University | Massola Junior N.S.,University of Sao Paulo
Summa Phytopathologica | Year: 2015

The state of São Paulo is one of the largest fruit producers in Brazil. Competitiveness in the international trade in fruits has demanded the minimization of postharvest damage, especially that caused by anthracnose. For the effective control of anthracnose in a certain region, it is necessary to know which species are associated with each host and the variability of the causal agents. This study aimed to characterize and identify Colletotrichum isolates from fruit trees grown in the state of São Paulo, Brazil. A total of 93 isolates obtained from avocado, mango, passion fruit and peach were analyzed according to conidium and colony morphology and molecular analysis (PCR amplification with species-specific primers and analysis of nucleotide sequences of the ITS regions and β-tubulin). There was high morphometric variability among isolates. Molecular analysis indicated that, in the state of São Paulo, anthracnose of avocado, mango, passion fruit and peach can be caused by different species of the C. gloeosporoides complex, also revealing the presence of C. boninense associated with passion fruit anthracnose and unidentified species of C. acutatum and C. gloeosporioides complexes causing anthracnose in peach. © 2015, Universidade Estadual Paulista (UNESP). All rights reserved.


Fischer I.H.,Polo Of Desenvolvimento Tecnologico Dos Agronegocios Do Centro Oeste | Bueno C.J.,Agencia Paulista de Tecnologia dos Agronegocios | Garcia M.J.M.,Polo Of Desenvolvimento Tecnologico Dos Agronegocios Do Centro Oeste | de Almeida A.M.,Polo Of Desenvolvimento Tecnologico Dos Agronegocios Do Centro Oeste
Acta Scientiarum - Agronomy | Year: 2010

The present work was conducted in greenhouse conditions at APTA/Bauru, São Paulo State, during the first semester of 2007, with the objective of evaluating the resistance of two varieties of yellow passion fruit, Maguari and Afruvec, to the Fusarium solani-Meloidogyne incognita race 3 complex. The experimental delineation was entirely randomized in a 2 x 4 factorial arrangement, with 4-5 repetitions, with the plot constituted by 1 vase containing 1 plant. The appraised parameters in the assay were disease severity, caused by F. solani, measuring the lesion length (cm) in the collar zone of plants and number of galls formed by M. incognita race 3 in the root system. The two varieties of yellow passion fruit showed susceptibility to F. solani. Only in the Afruvec variety, the presence of nematode resulted in increase of fusariosis. As for resistance to the phytonematode, the Maguary variety was classified as resistant in the presence or absence of Fusarium. In contrast, for the Afruvec variety, the presence of Fusarium resulted in reduction of resistance to the nematode, going from moderately resistant to susceptible.

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