Browsing by Author "Divjot KOUR"

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Effect of indigenous mineral availing microbial consortia and cattle manure combination for growth of maize (Zea mays L.)
(Springer, 2025) Rubee Devi; Marwa Fadhil Fadhil Alsaffar; Duraid K.A. Altaey; Sanjeev Kumar; Rajeshwari Negi; Babita Sharma; Sangram N. Singh; Ashutosh Kumar Rai; Sarvesh Rustagi; Ashok Yadav; Tanvir Kaur; Divjot KOUR; Ajar Nath Yadav; Amrik Singh Ahluwalia
Plant growth promoting bacterial strains were used as bioinoculants on cereal crops to improve plant growth and plant productivity. Crop responses to inoculation are complex because bacteria are not compatible with each other. Therefore, it is necessary to increase our understanding of the microbial ecology of crop rhizosphere under various agricultural techniques. In tropical agriculture, cattle manure is used as an organic fertilizer to increase soil fertility, however use of microbes as consortium have found as sustainable method for the enhancement of crops productivity. The purpose of this study was to evaluate the effects of three potential plant growth-promoting rhizospheric and endophytic bacterial strains EU-C3ST.R1, IARI-JR-44, and IARI-S-45 and organic fertilizers (cattle manure) individually and as consortia on maize (Zea mays L.) under both in-vitro and in-vivo conditions. A total of 123 bacterial strains were sorted out and screened for nitrogen fixation, phosphorus, and potassium solubilization. The potential N2-fixing; P and K solubilizing bacterial strains were identified using 16 S rRNA gene sequencing as Pseudomonas sp. EU-C3ST.R1, Micrococcus indicus IARI-JR-44, and Bacillus horikoshii IARI-S-45 respectively. The inoculation of these three strains on maize as microbial consortium and individual inoculum significantly increased the growth characteristic including height and biomass of the plants, as well as physiological characteristics i.e., chlorophyll, carotenoids, flavonoids, phenolics, and total soluble sugar content of the plant with respect to chemical fertilizers, cattle manure, and untreated control plant. The consortia were found to be more effective with respect to individual inoculants, cattle manure, and uninoculated control plants, so it can be utilized as biofertilizers for inoculation of cereal crops growing in hilly regions. © The Author(s) under exclusive licence to Society for Plant Research 2024.
Microbes Mediated Nutrient Dynamics for Plant Growth Promotion: Current Research and Future Challenges
(Springer, 2025) Rubee Devi; Tanvir Kaur; Rajeshwari Negi; Babita Sharma; Sanjeev Raj Kumar; Sangram N. Singh; Ashutosh Kumar Rai; Sarvesh Rustagi; Ashok Yadav; Anu Kumar; Divjot KOUR; Ajar Nath Yadav
On earth, soil is one of the most essential parts of nature which plays critical roles in plant growth, water flow, waste products recycling and provides habitats to various organisms. Soil is the combination of organic matter, air, water minerals, and sixteen different essential nutrient elements which are categorized into primary macronutrients, secondary macronutrients, and micronutrients. The nutrients elements present in soil either in organic forms or organic forms interchanged by the various microbial mechanisms such including fixation, chelation and solubilization. The microbes from all three domain i.e., archaea, bacteria, and eukarya have been reported for exhibiting the various mechanisms and strain belonging to genera Arthrobacter, Burkholderia, Bacillus, Paenibacillus, Pseudomonas, Rhizobium, Natrinema, and Serratia are widely known for ruling the nutrients dynamics. The microbes playing role in nutrients dynamics, have great economic importance in agriculture sector as agriculturist is in pressure of producing high quality and quantity of food along with managing the sustainability. These microbes could solve agricultural problems such as soil degradation and environmental pollution by using them as bio-fertilizer over chemical-based products. A huge number of reports have supported such statements so, the purpose of the present review aims to complies microbial role in all category nutrients dynamics and their role in plant growth promotion. © Association of Microbiologists of India 2024.