Botrytis cinerea and Colletotrichum spp. in strawberries: fungicide sensitivity of isolates and spatio-temporal progress

• Grant number: 13/21930-6
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: March 01, 2014
• End date: August 31, 2016
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Lilian Amorim
• Grantee: Juliana Silveira Baggio
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated scholarship(s): 14/16198-7 - Botrytis cinerea and Colletotrichum spp. in strawberries: sensitivity and molecular characterization of isolates with different levels of sensitivity to azoxystrobin, thiophanate-methyl and iprodione, BE.EP.DR

Abstract

Strawberries are affected by a large amount of pathogens which are found on seedling plants as well on harvested fruits, wherever strawberries are grown. Diseases are considered one of the most important problems of strawberries growth and jeopardize its production by reducing agricultural income and rising financial spending with its management. Gray mould, caused by Botrytis cinerea, and the anthracnoses, caused by some species of Colletotrichum, are the main diseases of strawberries and their importance are increasing worldwide due to the high economic losses they cause. As fungicide application is simple and the results obtained are immediate, they are widely used to control these diseases. However, they are often used interchangeably. Recent reports from ANVISA about pesticides residues monitoring have shown that more than 60 % of analyzed strawberries samples presented unsatisfying results. Fungicides continuous use can promote the selection of resistant phytopathogenic fungi, which are not efficiently controlled anymore. Many authors report the appearing of resistance in pathogens that cause diseases in strawberries. Therefore, this project aims are to evaluate Botrytis cinerea and Colletotrichum spp. isolates sensitivity to the main systemic fungicides used for strawberries in Brazil; to identify molecular characteristics of the isolates to recognize resistance genes to the chemical products; and to carry out studies about the spatio-temporal progress of the diseases caused by these pathogens in strawberries fields. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BAGGIO, JULIANA S.; WANG, NAN-YI; PERES, NATALIA A.; AMORIM, LILIAN. Baseline sensitivity of Colletotrichum acutatum isolates from Brazilian strawberry fields to azoxystrobin, difenoconazole, and thiophanate-methyl. TROPICAL PLANT PATHOLOGY, v. 43, n. 6, p. 533-542, DEC 2018. (14/16198-7, 13/21930-6)

BAGGIO, JULIANA S.; PERES, NATALIA A.; AMORIM, LILIAN. Sensitivity of Botrytis cinerea Isolates from Conventional and Organic Strawberry Fields in Brazil to Azoxystrobin, Iprodione, Pyrimethanil, and Thiophanate-Methyl. PLANT DISEASE, v. 102, n. 9, p. 1803-1810, SEP 2018. (14/16198-7, 13/21930-6)

BAGGIO, JULIANA S.; WANG, NAN-YI; PERES, NATALIA A.; AMORIM, LILIAN. Baseline sensitivity of Colletotrichum acutatum isolates from Brazilian strawberry fields to azoxystrobin, difenoconazole, and thiophanate-methyl. ROPICAL PLANT PATHOLOG, v. 43, n. 6, p. 10-pg., 2018-12-01. (14/16198-7, 13/21930-6)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BAGGIO, Juliana Silveira. Fungicide sensitivity and spatial and temporal dynamics of Botrytis cinerea and Colletotrichum spp. in conventional and organic strawberry fields. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.