Coimmobilization of Azospirillum lipoferum and Bacillus megaterium for Successful Phosphorus and Nitrogen Nutrition of Wheat Plants
By H. El-Komy. 2005
156 citations recorded by the source corpus.
Summary The efficacy of strains of Pseudomonas fluorescens, Bacillus megaterium and Azospirillum spp. in in vitro solubilization of Ca3PO4 was studied. Pseudomonas fluorescens and Bacillus megaterium strains were the most powerful phosphate solubilizers on Pikovskaya (PVK) plates and liquid medium. Azospirillum lipoferum strains showed weak zones of solubilization on the PVK plates. Phosphate solubilization by the tested organisms was accompanied with pH reduction of the culture medium. Maximum pH reduction was 2.8, 1.2 and 0.5 units for Pseudomonas fluorescens, Bacillus megaterium and Azospirillum lipoferum strain 137, respectively. Alginate and agar immobilization of the tested bacteria or coimmobilization of A. lipoferum 137 and B. megaterium significantly enhanced phosphorus solubilization for four consecutive 4-day cycles. In a pot experiment, phosphorus mobilization in wheat (Triticum aestivum L. cv. Beni Swif 1) inoculated with B. megaterium or A. lipoferum 137 as single or mixed inocula (as free or alginate immobilized beads) was studied in presence of Ca3PO4. Wheat inoculated with mixed inocula exhibited high shoot dry weight, total nitrogen (N) yield and the shoot phosphorus content increased by 37 and 53 % compared to the plants inoculated with A. lipoferum and uninoculated ones, used as control, respectively. Maximum nitrogenase activity (measured by acetylene reduction assay) was observed in mixed inoculum treatment, and was increased by 500 and 32 % compared to uninoculated and A. lipoferum inoculated plants. Results demonstrate the beneficial influence of coinoculation of A. lipoferum and B. megaterium for providing balanced N and P nutrition of wheat plants.
View Paper: https://www.semanticscholar.org/paper/754ec7a392511e9b55d807db0dfffd73e681100b
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
- C. Lee
- L. Hathwaik
- M. A. Qureshi
- N. Akhtar
- A. Elbeltagy
- I. Abbas
- H. Emara
- G.M Glenn
Citations in the corpus
- Role of phosphate solubilizing bacteria (PSB) in enhancing P availability and promoting cotton growth. (2012, methodology): “Our findings are in accordance with the work of many researchers who confirmed the microbial influence on growth of crops (Antoun et al., 1998; Zahir et al., 2005; El-Komy, 2005; Khalid et al., 2006; Ponmurugan and Gopi, 2006).”
- Beneficial effect of plant growth promoting bacteria isolated from the roots of potato plant (2013, background): “Also, El-Komy (2005) found that Pseudomonas fluorescens and Bacillus megaterium strains were able to solubilize phosphate effectively and recorded higher solubilization efficiency on PVK plates up to 350 and 185, respectively.”
- Isolation of efficient phosphate solubilizing bacteria capable of enhancing tomato plant growth (2016, background): “…such as Pantoea agglomerans (200 mg L-1) (Son et al., 2006), Pseudomonas fluorescens (184 mg L-1) (Katiyar and Goel, 2003), Pseudomonas putida (247 mg L-1) (Pandey et al., 2006), Bacillus megaterium (140 mg L-1) (El-Komy, 2005), and Enterobacter cloacae (127 mg L-1) (Chung et al., 2005).”