1887

Abstract

Summary: Our previous studies revealed that of subsp. strain 71 suppressed the synthesis of the cell density (quorum) sensing signal -(3-oxohexanoyl)-L-homoserine lactone, the production of extracellular enzymes and tissue macerating ability in soft-rotting species and that homologues of this negative regulator gene were present in other species. Northern blot data presented here demonstrate that and -like genes are also expressed in soft-rotting and non-soft-rotting spp. such as subsp. subsp. subsp. and A low-copy plasmid carrying of subsp. strain 71 caused suppression of antibiotic production in subsp. flagellum formation in subsp. carotenoid production in and and indigoidine production in In of subsp. suppressed the elicitation of the hypersensitive reaction in tobacco leaves and the production of disease symptoms in apple shoots, in addition to repressing motility and extracellular polysaccharide production. We conclude that homologues function as global regulators of secondary metabolic pathways as well as factors controlling host interaction of species.

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1996-02-01
2021-05-17
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