Characterization of a new Pseudomonas aeruginosa strain NJ-15 as a potential biocontrol agent

被引：196

作者：

Bano, N ^{[1
]}

Musarrat, J ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Fac Agr Sci, Dept Agr Microbiol, Aligarh 202002, Uttar Pradesh, India

来源：

CURRENT MICROBIOLOGY | 2003年 / 46卷 / 05期

关键词：

D O I：

10.1007/s00284-002-3857-8

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

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-A-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.

引用

页码：324 / 328

页数：5

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