Lipopeptide Phytotoxins Produced by Pseudomonas syringae pv. syringae: Comparison of the Biosurfactant and Ion Channel-Forming Activities of Syringopeptin and Syringomycin
نویسندگان
چکیده
منابع مشابه
Analysis of the syrP gene, which regulates syringomycin synthesis by Pseudomonas syringae pv. syringae.
Syringomycin is a lipodepsinonapeptide phytotoxin synthesized by Pseudomonas syringae pv. syringae on multienzymatic peptide synthetases. Sequence analysis of the interval between the syrB and syrD genes of P. syringae pv. syringae strain B301D revealed a 1,059-bp open reading frame (ORF), designated syrP. The predicted product of this ORF was a 39.6-kDa protein consisting of 353 amino acid res...
متن کاملCharacterization of the transcriptional activators SalA and SyrF, Which are required for syringomycin and syringopeptin production by Pseudomonas syringae pv. syringae.
Production of the phytotoxins syringomycin and syringopeptin by Pseudomonas syringae pv. syringae is controlled by the regulatory genes salA and syrF. Analysis with 70-mer oligonucleotide microarrays established that the syr-syp genes responsible for synthesis and secretion of syringomycin and syringopeptin belong to the SyrF regulon. Vector pMEKm12 was successfully used to express both SalA an...
متن کاملIdentification of the syr-syp box in the promoter regions of genes dedicated to syringomycin and syringopeptin production by Pseudomonas syringae pv. syringae B301D.
The phytotoxins syringopeptin and syringomycin are synthesized by nonribosomal peptide synthetases which are encoded by the syringomycin (syr) and syringopeptin (syp) genomic island of Pseudomonas syringae pv. syringae. Previous studies demonstrated that expression of the syr-syp genes was controlled by the salA-syrF regulatory pathway, which in turn was induced by plant signal molecules. In th...
متن کاملCharacterization of the argA gene required for arginine biosynthesis and syringomycin production by Pseudomonas syringae pv. syringae.
Two types of necrosis-inducing lipodepsipeptide toxins, called syringomycin and syringopeptin, are major virulence factors of Pseudomonas syringae pv. syringae strain B301D. A previous study showed that a locus, called syrA, was required for both syringomycin production and plant pathogenicity, and the syrA locus was speculated to encode a regulator of toxin production. In this study, sequence ...
متن کاملNovel cyclic lipodepsipeptide from Pseudomonas syringae pv. lachrymans strain 508 and syringopeptin antimicrobial activities.
The syringopeptins are a group of antimicrobial cyclic lipodepsipeptides produced by several plant-associated pseudomonads. A novel syringopeptin, SP508, was shown to be produced as two homologs (A and B) by Pseudomonas syringae pv. lachrymans strain 508 from apple and to structurally resemble syringopeptin SP22. SP508 differed from SP22 and other syringopeptins by having three instead of four ...
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ژورنال
عنوان ژورنال: Molecular Plant-Microbe Interactions®
سال: 1997
ISSN: 0894-0282,1943-7706
DOI: 10.1094/mpmi.1997.10.3.347