Black crust on rubber tree: identification and characterization of causal agent

• Grant number: 20/14082-2
• Support Opportunities: Scholarships in Brazil - Master
• Start date: April 01, 2021
• End date: January 31, 2023
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Ana Carolina Firmino
• Grantee: Marcela Eloi Gomes
• Host Institution: Faculdade de Ciências Agrárias e Tecnológicas. Universidade Estadual Paulista (UNESP). Campus de Dracena. Dracena , SP, Brazil

Abstract

The rubber tree (Hevea brasiliensis Müell. Arg.) Is a species from the Amazon region, widely cultivated in Brazil. Over the past few years, with climate changes added to factors such as the expansion of rubber plantations to different locations with different environmental conditions, the occurrence of a disease that has always been treated as secondary, the black crust, has become a concern due to the early fall of rubber tree leaves This disease has been associated with the fungi Phyllachora huberi and Rosenscheldiella heveae, which can occur in isolation together. Because this disease has been treated as of low importance in rubber trees, studies related to it are scarce. Thus, updated information to determine which species of Phyllachora and Rosenscheldiella occur and which are prevalent in the main rubber-producing regions and which characterize the populations of the pathogen are important for the country. Thus, this work aims to identify and characterize species of associated fungi associated with the black rubber crust in different Brazilian states. For that, phylogenetic analyzes will be performed, using partial sequences of the partial rDNA subunit (28S, LSU), ribosomal rDNA region (18S, SSU) and the ITS-5.8S rDNA region of the collected isolates. The isolates will also be characterized pathogenically by inoculation in the RRIM600 clone. The results obtained will allow a better understanding of the etiological and epidemiological aspects of the disease, providing subsidies for the development and the adoption of adequate control methods for this rubber tree in Brazil. (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)

MARCELA ELOI GOMES; GABRIEL LEONARDI ANTONIO; THAÍS LOPES DE OLIVEIRA; DHÔNATA MARCOS PERFEITO; LOUYNE VARINI SANTOS DOS ANJOS; ELAINE CRISTINE PIFFER GONÇALVES; IVAN HERMAN FISCHER; ERIVALDO JOSÉ SCALOPPI; EDSON LUIZ FURTADO; ANA CAROLINA FIRMINO. Cladosporium spp. associado a crosta negra em seringueira no Brasil. Summa Phytopathologica, v. 49, 2023-11-24. (20/14082-2, 20/11518-4)

Academic Publications

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

GOMES, Marcela Eloi. Black crust on rubber trees: identification and characterization of the causal agent. 2023. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Ilha Solteira Ilha Solteira.