Author(s):
1. Aqsa Tariq:
Institute of Botany, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
2. Ambreen Ahmed:
Institute of Botany, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
Abstract:
Phosphate is an important macronutrient required for various plant physiological processes. Low mobility and high chelation rate make phosphate a limiting macronutrient in soils, therefore, farmers use synthetic fertilizers to bring off plant phosphate demand. Excessive use of synthetic phosphate fertilizers adversely effects our ecosystem. Use of phosphate-solubilizing bacteria (PSB) offer a green strategy to make insoluble phosphate in soil available to plants, thus, improving plant growth organically. Some PSB also have ability to promote plant growth through mechanisms such as production of phytohormones. Auxins are widely produced phytohormones by rhizobacteria that act as key factor in regulating plant-microbe symbiotic interactions. Hence, phosphate solubilizing PGPR, besides solubilizing phosphate, can also improve plant growth. In the current study, rhizobacteria with greater phosphate solubilizing efficiency were selected and their growth promotional profiling was studied. Phosphate solubilizing efficacy of these PSB was analyzed under variable physical parameters. High-Performance Liquid Chromatographic Analysis (HPLC) analysis revealed the release of various organic acids by these rhizobacteria which are responsible for the solubilization of insoluble phosphate. Growth stimulatory impact of these phospho-rhizobacteria were evaluated using Zea mays L. Our data showed that the bacterial isolates have shown variable potential to solubilize phosphate under varying physiological conditions. The data suggested that these bacterial strains can be used as phosphate biofertilizers for growth improvement of plants in place of chemical phosphate fertilizers which will be a cost-effective strategy towards green agriculture.
Page(s):
144-144
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Food and Applied Sciences (ICFAS-23) 3-5 August 23, Volume: 0, Issue: 0, Year: 2023
Keywords:
HPLC
,
Rhizobacteria
,
auxins
,
PSB
,
Phosphate Solubilization
References:
References are not available for this document.
Citations
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