Characterization of a new Pseudomonas aeruginosa strain NJ-15 as a potential biocontrol agent.
Curr Microbiol
; 46(5): 324-8, 2003 May.
Article
de En
| MEDLINE
| ID: mdl-12732958
ABSTRACT
Phylogenetic characterization of soil isolate NJ-15, based on sequence homology of a partial 746-bp fragment of 16SrDNA amplicon, with the ribosomal database sequences (http//www.msu.edu/RDP/cgis/phylip.cgi), validated the strain as Pseudomonas aeruginosa. The strain NJ-15 produced a substantial amount of indole acetic acid (IAA) in tryptophan-supplemented medium. Besides, the strain also exhibited significant production of both the siderophore and hydrogen cyanide (HCN) on chrome azurol S and King's B media, respectively. The data revealed lower HCN production under iron-limiting conditions vis-à-vis higher HCN release with iron stimulation. Significant growth inhibition of phytopathogenic fungi occurred in the order as Fusarium oxysporum > Trichoderma herizum > Alternaria alternata > Macrophomina phasiolina upon incubation with strain NJ-15 cells. Thus, the secondary metabolites producing new Pseudomonas aeruginosa strain NJ-15 exhibited innate potential of plant growth promotion and biocontrol activities in vitro.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Pseudomonas aeruginosa
/
Lutte biologique contre les nuisibles
/
Champignons
Langue:
En
Journal:
Curr Microbiol
Année:
2003
Type de document:
Article
Pays d'affiliation:
Inde