Isolation and identification of substances produced by citrus plants involved in the stimulation and/or dormancy breaking of quiescent structures of Colletorichum acutatum, causal agent of citrus postbloom fruit drop.

• Grant number: 09/13568-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2010
• End date: February 29, 2012
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Sérgio Florentino Pascholati
• Grantee: Simone Cristiane Brand
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The project is part of the thematic project "Epidemiology and management of citrus post bloom fruit drop in expansion areas of citrus in São Paulo State", under the coordination of Prof. Lilian Amorim - Esalq/USP. The studies will be carried out having as goal the isolation and identification of substances produced by citrus plants that could be involved in the stimulation and/or dormancy breaking of quiescent structures of Colletorichum acutatum, the causal agent of the citrus post bloom fruit drop. Some authors already showed that the pathogen can survive as conidia or apressoria adhered to the leaf surface or as quiescent infection and that the inocula represented by these quiescent structures can be stimulated in the presence of flower extracts. Basically, nothing is known about the substances present in the extracts and which specific substance would act braking the dormancy of the fungal structures. Thus, the goal is the isolation and identification of substances produced by citrus plants that could be involved in the stimulation and/or dormancy breaking of these quiescent structures, which results could help the better understanding of the interaction as well as contribute for the control of the disease.

Academic Publications

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

BRAND, Simone Cristiane. Isolation and identification of substances from sweet orange Valencia (Citrus sinensis) involved in the stimulation and/or dormancy-breaking of quiescent structures of Colletotrichum acutatum, causal agent of citrus postbloom fruit drop. 2012. Master's Dissertation - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.