| Texto completo | |
| Autor(es): |
do Amaral, Alexandre Morais
;
Saito, Daniel
;
Formighieri, Eduardo Fernandes
;
Rabello, Edenilson
;
de Souza, Adriane N.
;
Silva-Stenico, Maria Estela
;
Tsai, Siu Mui
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | GENETICS AND MOLECULAR BIOLOGY; v. 30, n. 3, p. 9-pg., 2007-01-01. |
| Resumo | |
Pleiotropic drug resistance (PDR) proteins, a subfamily of the ATP-binding cassette (ABC) transporters, have been recently shown to play a role in plant defense against biotic and abiotic stresses. However, nothing is known about their expression in citrus. To investigate the occurrence of PDR homologues in citrus species, we have surveyed EST sequences from different tissues and conditions of the Citrus Expressed Sequence Tags (CitEST) database, through sequence similarity search analyses and inspections for characteristic PDR domains. Multiple sequence alignments, prediction of transmembrane topology and phylogenetic analysis of PDR-like proteins were additionally performed. This study allowed the identification of nine putative proteins showing characteristic PDR features in citrus species under various conditions, which may indicate a potential correlation between PDRs and stress and metabolism of citrus plants. Moreover, a tissue-specific putative PDR-like protein was found in sweet orange fruits. To our knowledge, this is the first report regarding the identification of citrus ESTs encoding PDR-like proteins as well as the first to identify a putative full ABC transporter with specific expression in fruits. (AU) | |
| Processo FAPESP: | 05/00719-9 - Análise funcional de genes presentes na bactéria Xanthomonas axonopodis pv. citri para degradação de parede celular |
| Beneficiário: | Alexandre Morais Do Amaral |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |