Stimulation of the growth of Jatropha curcas by the plant growth promoting bacterium Enterobacter cancerogenus MSA2

Abstract

A novel Enterobacter cancerogenus MSA2 is a plant growth promoting gamma-proteobacterium that was isolated from the rhizosphere of Jatropha cucas a potentially important biofuel feed stock plant. Based on phenotypic, physiological, biochemical and phylogenetic studies, strain MSA2 could be classified as a member of E. cancerogenus. However, comparisons of characteristics with other known species of the genus Enterobacter suggested that strain MSA2 could be a novel PGPB strain. In vitro studies were carried for the plant growth promoting attribute of this culture. It tested positive for ACC (1-aminocyclopropane-1-carboxylic acid) deaminase production, phytase, phosphate solubilization, IAA (Indole acetic acid) production, siderophore, and ammonia production. The isolate was then used as a inoculant for the vegetative study of Jatropha curcas plant. Enterobacter cancerogenus MSA2 supplemented with 1% carboxymethylcellulose showed overall plant growth promotion effect resulting in enhanced root length (124.14%), fresh root mass (81%), fresh shoot mass (120.02%), dry root mass (124%), dry shoot mass (105.54%), number of leaf (30.72%), chlorophyll content (50.41%), and biomass (87.20%) over control under the days of experimental observation. This study was designed for 120 days and was in triplicate and the data was collected at every 30 days.

Describing Paenibacillus mucilaginosus strain N3 as an efficient plant growth promoting rhizobacteria (PGPR)

“…Plants can absorb only mono and dibasic phosphate which are the soluble forms of phosphate (Jha, Patel, & Saraf, 2012). Phosphatesolubilizing microbes mineralize organic phosphorous in soil by solubilizing complex insoluble phosphates (Tri-calcium phosphate, Rock phosphate, Aluminum phosphate, etc.)…”

EXAMINATION OF CHITINOLYTIC BACTERIA IN ALGINATE-CHITOSAN ENCAPSULATION ON CHILI SEED AGAINST DAMPING OFF CAUSED BY <i>FUSARIUM OXYSPORUM</i>

“…BK15 application produced higher seedling height and dry-weight. Enterobacter cancerogenus MSA2 showed overall plant growth promotion of Jatropa curcas by producing metabolites such as 1-aminocyclopropane-1-carboxylic acid deaminase, phytase, indole acetic acid and siderophore (Jha et al, 2011). Enterobacter has also been reported to control pathogenic fungi (Okamoto et al, 2000;Slininger et al, 2004).…”

Rhizosphere mediated biodegradation of 1,4-dichlorobenzene by plant growth promoting rhizobacteria of Jatropha curcas

“…Jatropha curcas is an economically important plant and these bacterial strains may be useful for improvement in its production if used as inoculants. It has been suggested that the growth of Jatropha plant may be limited due to various reasons including absence of growth factors and hence the inoculation of siderophore producing beneficial PGPR, improve the condition of plant growth and soil (Jha et al, 2012).…”