Impact of motility and chemotaxis features of the rhizobacterium Pseudomonas chlororaphis PCL1606 on its biocontrol of avocado white root rot
Int. microbiol
; 20(2): 95-104, jun. 2017. graf, tab, ilus
Artigo
em Inglês
| IBECS
| ID: ibc-164434
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
The biocontrol rhizobacterium Pseudomonas chlororaphis PCL1606 has the ability to protect avocado plants against white root rot produced by the phytopathogenic fungus Rosellinia necatrix. Moreover, PCL1606 displayed direct interactions with avocado roots and the pathogenic fungus. Thus, nonmotile (flgK mutant) and non-chemotactic (cheA mutant) derivatives of PCL1606 were constructed to emphasize the importance of motility and chemotaxis in the biological behaviour of PCL1606 during the biocontrol interaction. Plate chemotaxis assay showed that PCL1606 was attracted to the single compounds tested, such as glucose, glutamate, succinate, aspartate and malate, but no chemotaxis was observed to avocado or R. necatrix exudates. Using the more sensitive capillary assay, it was reported that smaller concentrations (1 mM) of single compounds elicited high chemotactic responses, and strong attraction was confirmed to avocado and R. necatrix exudates. Finally, biocontrol experiments revealed that the cheA and fglK derivative mutants reduced root protection against R. necatrix, suggesting an important role for these biological traits in biocontrol by P. chlororaphis PCL1606 (AU)
RESUMEN
No disponible
Texto completo:
Disponível
Coleções:
Bases de dados nacionais
/
Espanha
Contexto em Saúde:
ODS3 - Saúde e Bem-Estar
Problema de saúde:
Meta 3.3: Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis
Base de dados:
IBECS
Assunto principal:
Pseudomonas
/
Controle Biológico de Vetores
/
Raízes de Plantas
Idioma:
Inglês
Revista:
Int. microbiol
Ano de publicação:
2017
Tipo de documento:
Artigo
Instituição/País de afiliação:
Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora/España