Análise de fatores de resistência a Tospovirus em acessos de Solanum (secção Lycopersicon)
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Data
2015-09-30
Título da Revista
ISSN da Revista
Título de Volume
Editor
Evandro Novaes
Resumo
The intensive and uninterrupted tomato cultivation has
favored the establishment of several diseases that affect fruit
yield and quality. Genetic resistance is the best method to control
the disease called ‘vira-cabeça’ (caused by distinct species of the
genus Tospovirus), being Sw-5 the first resistance gene effectively
identified to control it in tomato plants. This study aimed at
identifying new potential sources of tospovirus resistance in wild
Solanum (Lycopersicon) species, as well as performing phylogenetic
analysis related to the evolutionary characteristics of the Sw-5b
gene, in accessions of wild tomato species. These analyses showed
that the different tomato species belong to distinct evolutionary
groups. Most of the accessions with wide-spectrum resistance to
Tospovirus species correspond to allelic variants closely related
to the original Sw-5b gene copy. However, resistant accessions of
S. chilense and S. habrochaites are located in distinct phylogenetic
groups, meaning that they may represent promising sources of new
genes/alleles, providing wide resistance to tospovirus.
Descrição
v. 45, n. 3, p. 340-347, jul./set. 2015.
Palavras-chave
Solanum lycopersicum L., Sw-5, Genes de resistência, Resistance genes
Citação
OLIVEIRA, Renata Maria de; CUNHA, Marcos Gomes da; FONSECA, Maria Esther Noronha; BOITEUX, Leonardo Silva; DIANESE, Érico de Campos. Análise de fatores de resistência a Tospovirus em acessos de Solanum (secção Lycopersicon). Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 3, p. 340-347, jul./set. 2015. Disponível em: < http://www.revistas.ufg.br/index.php/pat/article/view/34417/19017>.