PJB-2018-887
BIOCHEMICAL AND METABOLIC CHARACTERIZATION OF SOIL MICRO-FLORA FROM VEGETABLE FARM
AISHA AZHAR
Abstract
Soil microorganisms particularly Plant Growth Promoting Rhizobacteria (PGPR) plays a crucial role in the maintenance of sustainable agricultural system. In this study, samples were collected from vegetable farm of Punjab University, Lahore. Eleven bacterial strains were isolated, purified, characterized biochemically and further subjected to the metabolic characterization by performing nitrogen fixation, phosphate solublization, hydrogen cyanide (HCN) production, indole acetic acid (IAA) production, antibiotic susceptibility and heavy metal resistance test, lead acetate assay for the H2S production. Mostly bacterial strains were positive for different tests and were characterized as Staphylococcus aureus, Micrococcus varians and Staphylococcus saprophyticus. As most of the strains show positive results for resistance against heavy metals, phosphate solublization, nitrogen fixation, IAA production, and so these strains might be utilized for the removal of heavy metals from the ecosystem as well as biofertilizer in vegetable farm.
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