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https://locus.ufv.br//handle/123456789/22077
Tipo: | Artigo |
Título: | Cloning and characterization of gene-resistant analogs (RGAs) involved in rust (Puccinia psidii) resistance in Eucalyptus grandis |
Autor(es): | Alfenas, Acelino Couto Laia, Marcelo Luiz Brommonschenkel, Sergio Hermínio Oda, Shinitiro Melo, Eduardo José de Silva, Inaê Mariê de Araújo Gonçalves, Janaína Fernandes Marques, Ariadne |
Abstract: | Disease-resistant genes play an important role in defending against a variety of pathogens and insect pests in plants. Most of the disease-resistant genes encode proteins with conserved leucine rich repeat and nucleotide binding site domains. In this study, we cloned and characterized gene-resistant analogs (RGAs) from Eucalyptus grandis using degenerate PCR, with primers specifically targeting these two domains. The amplified fragments were cloned into the pGEM-T vector and transformed into Escherichia coli. Among the 90 clones obtained, 13 were sequenced and compared with each other and with previously identified gene-resistant diseases. A BLASTX search in GenBank revealed high similarities among the conserved domains of these cloned genes with RGA genes. Some clones, however, showed no significant similarity with DNA sequences in GenBank. Southern blotting analysis identified several polymorphic RFLP loci between distinct genotypes. However, none of them co-segregated with the Puccinia psidii Winter resistance gene 1 (Ppr1) in a population study. |
Palavras-chave: | Cloning Conserved domains RGAs Rust Eucalyptus |
Editor: | Journal of Forestry Research |
Tipo de Acesso: | Northeast Forestry University |
URI: | https://doi.org/10.1007/s11676-015-0049-5 http://www.locus.ufv.br/handle/123456789/22077 |
Data do documento: | Set-2015 |
Aparece nas coleções: | Fitopatologia - Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 698,19 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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