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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Cladosporium spp. associated with black crust on rubber trees in Brazil

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Author(s):
Marcela Eloi Gomes [1] ; Gabriel Leonardi Antonio [2] ; Thaís Lopes De Oliveira [3] ; Dhônata Marcos Perfeito [4] ; Louyne Varini Santos dos Anjos [5] ; Elaine Cristine Piffer Gonçalves [6] ; Ivan Herman Fischer [7] ; Erivaldo José Scaloppi [8] ; Edson Luiz Furtado [9] ; Ana Carolina Firmino [10]
Total Authors: 10
Affiliation:
[1] São Paulo State University. School of Engineering - Brasil
[2] São Paulo State University. School of Agriculture - Brasil
[3] São Paulo State University. College of Agricultural and Technological Sciences - Brasil
[4] São Paulo State University. College of Agricultural and Technological Sciences - Brasil
[5] São Paulo State University. School of Engineering - Brasil
[6] São Paulo’s Agency for Agribusiness Technology. Regional Pole Alta Mogiana - Brasil
[7] São Paulo’s Agency for Agribusiness Technology. Central-West Regional Center - Brasil
[8] Agronomic Institute of Campinas. Center of Rubber Tree and Agroforestry Systems - Brasil
[9] São Paulo State University. School of Agriculture - Brasil
[10] São Paulo State University. College of Agricultural and Technological Sciences - Brasil
Total Affiliations: 10
Document type: Journal article
Source: Summa Phytopathologica; v. 49, 2023-11-24.
Abstract

ABSTRACT In recent years, a disease called black crust has caused damage to rubber trees in Brazil, since it leads to rapid leaf fall and consequently low latex production. Until the 1990s, black crust was associated with the fungi Phyllachora huberi and Rosenscheldiella heveae, but in 2022, after analysis of samples collected in the states of Minas Gerais and São Paulo, different species of the fungus Cladosporium ssp. were isolated from rubber tree leaves showing black crust in their leaflets. After morphological and phylogenetic analysis, using partial sequences of ITS-5.8S rDNA, α-elongase and actin regions, the isolates were identified as Cladosporium pseudocladosporioides, C. tenuissimum, C. cladosporioides, C. perangustum and C. xanthochromaticum. Pathogenicity tests with these isolates, in a greenhouse, demonstrated rapid appearance of symptoms such as apical death, damage to stems, intense defoliation and presence of black crust on stems and leaves. All isolates were pathogenic but had variable aggressiveness. This is the first report of Cladosporium causing black crust on rubber trees in Brazil. (AU)

FAPESP's process: 20/14082-2 - Black crust on rubber tree: identification and characterization of causal agent
Grantee:Marcela Eloi Gomes
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 20/11518-4 - Black crust on rubber tree: causal agent, environmental influence on pre-penetration in different rubber tree clones, selection of resistant clones and biological control in susceptible clones
Grantee:Ana Carolina Firmino
Support Opportunities: Regular Research Grants