Optimization of growth conditions For zinc Solubilizing Plant Growth associated Bacteria and Fungi

Plant growth promoting rhizobacteria can affect plant growth by different direct and indirect mechanisms [1]. PGPR influence direct growth promotion of plants by fixing atmospheric nitrogen, solubilizing insoluble phosphates, secreting hormones such as IAA, GAs, and Kinetics besides ACC deaminase production, which helps in regulation of ethylene. Induced systemic resistance (ISR), antibiosis, competition for nutrients, parasitism, production of metabolites (hydrogen cyanide, siderophores) suppressive to deleterious rhizobacteria are some of the mechanism that indirectly benefit plant growth. Zinc (Zn) is an essential element necessary for plant, humans and microorganisms [2,3]. Human and other living things require Zn throughout requires in little quantities to compose a complete array of physiological functions. Zinc is a vital mineral of “exceptional biological and public health importance” [4]. Furthermore 100 specific enzymes are found in which zinc serves as structural ions in transcription factors and is stored and transferred in metallothioneinsand typically the 2nd most abundant transition metal in organisms, after iron and it is the only metal which appears in all enzyme classes [3].