Spatio-temporal progress of grapevine rust and downy mildew in plants with different architectures

• Grant number: 14/05522-8
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: July 01, 2014
• End date: August 31, 2017
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Lilian Amorim
• Grantee: Meyriele Pires de Camargo
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated scholarship(s): 15/26106-5 - Grapevine downy mildew: temporal and spatial disease progress, population diversity and role of sexual reproduction in epidemic dynamics in subtropical regions, BE.EP.DR

Abstract

The State of São Paulo is the third largest grapevine grower in Brazil and the largest producer of common grapes. The occurrence of diseases is one of the main problems faced by producers, due to the potential damage that can cause in the production. Among the diseases with the higher impact in the vineyards of São Paulo, downy mildew (Plasmopara viticola) and rust (Phakopsora euvitis) are mentioned. The downy mildew is considered the most important disease of the crop, which can cause losses of up to 100%. Despite the recent occurrence in Brazil, the grapevine rust is currently endemic in South and Southeast regions of the country. The disease causes premature defoliation, damaging the vigor of the plants in the next cycle. In producing regions of São Paulo, the control of both diseases has been performed preventively with intense and exaggerated use of fungicide applications. The influence of plant architecture on the progress of these epidemics is little explored for grapevine crop. However, the change in plant architecture may have a meaningful effect in reducing the initial inoculum of epidemics, by imposing barriers to the pathogen, and also the rates of disease progress, by modifying the crop microclimate. Thus, changes in plant architecture may constitute an important tool in the management of these diseases. Therefore, the main objective of this study is to characterize the spatial distribution and the temporal progress of downy mildew and rust and the effect of plant architecture in the conduction systems of trellis and Y, in order to propose alternative management strategies to the chemical control and comprehend the epidemic process of these diseases. (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)

CAMARGO, M. P.; HONG, C. F.; AMORIM, L.; SCHERM, H.. Cryptic species and population genetic structure of Plasmopara viticola in Sao Paulo State, Brazil. PLANT PATHOLOGY, v. 68, n. 4, p. 719-726, MAY 2019. (14/05522-8, 15/26106-5)

CAMARGO, MEYRIELE P.; MOMESSO, BRUNA V.; HAHN, MARLON H.; DUARTE, HENRIQUE S. S.. Development and validation of a standard area diagram set to estimate severity of grapevine downy mildew on Vitis labrusca. European Journal of Plant Pathology, v. 155, n. 3, p. 1033-1038, NOV 2019. (14/05522-8, 15/26106-5)

Academic Publications

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

CAMARGO, Meyriele Pires de. Population genetic structure of Plasmopara viticola and temporal progress of downy mildew and grapevine rust. 2017. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.