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Phosphate solubilization Tag

Actinomycetes are widely recognized for significant role in promoting soil health and sustainable agriculture through the production of diverse bioactive compounds and plant growth promoting metabolites. This article highlights the ecological significance and agricultural importance of actinomycetes, with particular emphasis on their ability to produce antibiotics, extracellular enzymes, siderophores, and phytohormones. It also discusses their contributions to nutrient solubilization and mobilization, and enhancement of plant stress tolerance, biocontrol of pathogens and improvement of soil quality through bioremediation. Additionaly, the article explores the application of Actinomycetes as biofertilizers and bioinoculants in organic farming, emphasizing their potential to increase crop productivity while reducing dependence on chemical fertilizers and pesticides. Actinomycetes represent a promising and eco-friendly resource for improving soil fertility plant health, and the long-term sustainability of organic agriculture systems 1. Introduction to Actinomycetes Actinomycetes are Gram-positive, filamentous prokaryotic microorganisms belonging to the phylum Actinomycetota (Actinobacteria). Although they are classified as bacteria, they possess distinctive morphological and physiological characteristics that differentiate them from other bacterial groups. They are ubiquitous in terrestrial and aquatic ecosystems and are particularly abundant in soils with neutral to alkaline pH, high temperatures, or limited moisture availability, where they play a crucial role in maintaining soil health and ecological balance. Morphologically, actinomycetes exhibit a fungus-like growth pattern by producing extensively branched...

अधि‍क फसल वृद्धि के लिए प्लांट ग्रोथ को बढ़ावा देनेे वाले राइज़ोबैक्टेरिया (पीजीपीआर)  का उपयोग  Soil harbors several beneficial microorganisms and some of them colonize in the rhizospheric zone and enhance plant growth. Such bacteria are generally designated as PGPR (Plant Growth-Promoting Rhizobacteria). Plant growth-promoting rhizobacteria (PGPR) was first defined by Kloepper and Schrot  to describe soil bacteria that colonize the roots of plants following inoculation onto seed and that enhance plant growth. Forms of Plant Growth Promoting Rhizobacterial (पौधे का वि‍कास बढाने वाले  राईजोबैट्रीयल के रूप ) Plant growth promoting rhizobacteria can be classified into extracellular plant growth promoting rhizobacteria (ePGPR) and intracellular plant growth promoting rhizobacteria (iPGPR). The ePGPRs may exist in the rhizosphere, on the rhizoplane or in the spaces between the cells of root cortex while iPGPRs locates generally inside the specialized nodular structures of root cells. The bacterial genera such as Agrobacterium, Arthrobacter, Azotobacter, Azospirillum, Bacillus, Burkholderia, Caulobacter, Chromobacterium, Flavobacterium, Micrococcous, Pseudomonas and Serratia belongs to ePGPR. The iPGPR belongs to the family of Rhizobiaceae includes Allorhizobium, Bradyrhizobium, Mesorhizobium and Rhizobium, endophytes and Frankia species both of which can symbiotically fix atmospheric nitrogen with the higher plants. Mechanism Employed by PGPRs in Plant Growth Promotion: (राईजोबैक्‍ट्रीया से पौधे के विकास की क्रि‍यावि‍धि‍) Plant growth promotion by plant growth promoting rhizobacteria is a well-known phenomenon and this growth enhancement is due...