Inferência filogenética revela a complexa etiologia das manchas areolada e foliar em seringueira e em outras espécies cultivadas na Amazônia - 10.4025/actasciagron.v32i3.4856

Ana Paula da Silva de Campos Gaino; Marco Antonio Basseto; Luadir Gasparotto; Luiz Sebastiao Poltronieri; Paulo Cezar Ceresini

doi:10.4025/actasciagron.v32i3.4856

Phylogenetic inference reveals the complex etiology of the target and leaf spot diseases on rubber tree and other species cultivated in the Amazon-doi:10.4025/actasciagron.v32i3.4856

Authors

Ana Paula da Silva de Campos Gaino UNESP, Universidade Estadual Paulista, Campus de Ilha Solteira, Departamento Fitossanidade, Engenharia Rural e Solos Author
Marco Antonio Basseto UNESP, Universidade Estadual Paulista, Campus de Ilha Solteira, Departamento Fitossanidade, Engenharia Rural e Solos Author
Luadir Gasparotto Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Ocidental Author
Luiz Sebastiao Poltronieri Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental Author
Paulo Cezar Ceresini ETH ZÃ¼rich, Swiss Federal Institute of Technology, Institute of Integrative Biology (IBZ), Plant Pathology Author

DOI:

https://doi.org/10.4025/actasciagron.v32i3.4856

Keywords:

Rhizoctonia solani, anastomosis grouping, cross pathogenicity, rubber tree, citrus

Abstract

Thanatephorus target spot is one of the most important diseases of the rubber tree (Hevea brasiliensis) in the Amazon region of Brazil. In addition to rubber tree, the fungus Thanatephorus cucumeris (anamorphase = Rhizoctonia solani) causes several foliar diseases on other agricultural crops or native species in the region. Based on the lack of information on which anastomosis groups (AG) of R. solani are associated with rubber tree and other hosts in the Amazon, we tested the hypothesis that these isolates belong to distinct AGs. There is no information about the cross pathogenicity (to rubber tree) of isolates from other hosts. The AG was determined based on phylogenetic analyses of the ITS region of the rDNA. We concluded that a new subgroup of R. solani (the AG-2-2 Hb) is the main pathogen causing the rubber tree leaf spot. However, isolates from other AGs (AG-1 IB and ID, AG-4 HGI) and from Ceratobasidium sp. (binucleate Rhizoctonia sp. AG-R) from distinct hosts can also infect the rubber tree. This implicates in diversity of inoculum sources for the survival and spread of the leaf spot pathogens. For the very first time, we report the occurrence of a new AG of R. solani infecting citrus in Acre, Brazil, which is distinct from all the others already described worldwide (probably AG-14).

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Author Biographies

Ana Paula da Silva de Campos Gaino, UNESP, Universidade Estadual Paulista, Campus de Ilha Solteira, Departamento Fitossanidade, Engenharia Rural e Solos

UNESP - Campus de Ilha Solteira, Departamento Fitossanidade, Engenharia Rural e Solos, Programa de Pos Graduaçao em Agronomia (Sistemas de Produçao)
Marco Antonio Basseto, UNESP, Universidade Estadual Paulista, Campus de Ilha Solteira, Departamento Fitossanidade, Engenharia Rural e Solos

UNESP - Campus de Botucatu, Departamento de Agricultura, Programa de Pos Graduação em Agronomia (Proteção de Plantas)
Luadir Gasparotto, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Ocidental

Fitopatologia / Resistência genetica / Epidemiologia
Luiz Sebastiao Poltronieri, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental

Fitopatologia / Resistência genetica / Epidemiologia
Paulo Cezar Ceresini, ETH ZÃ¼rich, Swiss Federal Institute of Technology, Institute of Integrative Biology (IBZ), Plant Pathology

Fitopatologia / Genética de populaçoes e filogeografia de fitopatogenos

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PDF (Portuguese)

Published

2010-08-25

Issue

Vol. 32 No. 3 (2010)

Section

Crop Protection

License

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I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

How to Cite

Gaino, A. P. da S. de C., Basseto, M. A., Gasparotto, L., Poltronieri, L. S., & Ceresini, P. C. (2010). Phylogenetic inference reveals the complex etiology of the target and leaf spot diseases on rubber tree and other species cultivated in the Amazon-doi:10.4025/actasciagron.v32i3.4856. Acta Scientiarum. Agronomy, 32(3), 385-395. https://doi.org/10.4025/actasciagron.v32i3.4856