Avirulence genes of plant pathogens / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 5-9, 2002.
Artigo
em Chinês
| WPRIM
| ID: wpr-231375
ABSTRACT
One type of important plant disease resistance, gene-for-gene resistance, is resulted from the interactions between products of the pathogen avirulence (Avr) genes and their matching plant resistance (R) genes. Avr genes have been cloned from a variety of pathogens including fungi, bacteria, viruses and oomycetes. No significant homology is found between sequences of the most cloned Avr genes and those of known proteins or between those of themselves. However, significant homology has been found between sequences of the cloned R genes and those of known proteins or between those of themselves. R proteins consist of similar domains. It has been reported that hypersensitive cell death and resistance, which are induced by interactions between products of different Avr/R gene pairs consisting of similar R genes but different Avr genes, are distinct in development speed, strength, and organ and tissue specificity. Avr genes have dual functions Pathogens containing Avr genes are avirulent to plants carrying the matching R genes, while they are virulent in race, strain, pathovar or species-specific way to plants without carrying the matching R genes.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Doenças das Plantas
/
Vírus de Plantas
/
Bactérias
/
Virologia
/
Virulência
/
Expressão Gênica
/
Fungos
/
Genes Bacterianos
/
Genes Fúngicos
Idioma:
Chinês
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2002
Tipo de documento:
Artigo
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