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Drought Stress Alleviation: The Contribution Of A Soil Bacterium And An Arbuscular Mycorrhizal Fungus In Scallion

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  • Paris Chakravarty
  • Charles Zhang

Abstract

Recent climate change and global warming have caused extreme heat and low rainfall which negatively affected soil nutrient, fertility status, decreased water content, and changed physiochemical properties of agricultural soils in many parts of the globe. As a result of drought, crop production is seriously reduced. The beneficial effects of soil microorganisms including arbuscular mycorrhizal fungi and rhizospheric bacteria on crop production and soil health are vital for the sustainable management of stressed agricultural practices. The present study evaluated the effects of an arbuscular mycorrhizal fungus, Rhizophagus irregularis, and a rhizospheric bacterium, Pseudomonas flourescens, alone and in dual inoculation on the survival, growth, mycorrhizal colonization, nutrient uptake, glomalin production, and soil aggregation of Allium fistulosum plants. In water-stressed soil, seedling survival, growth, total biomass, nutrient uptake, glomalin production, and soil aggregation were significantly increased when inoculated with R. irregularis and P. flourescens. Dual inoculation with R. irregularis and P. flourescens produced vigorous seedlings which contained higher amount of nitrogen, phosphorus, potassium contents, glomalin production, and soil aggregation compared to single inoculation. The present results indicate that arbuscular mycorrhizal fungi and beneficial rhizospheric bacteria offer potential for biofertilizers and mitigating drought in A. fistulosum plants.

Suggested Citation

  • Paris Chakravarty & Charles Zhang, 2024. "Drought Stress Alleviation: The Contribution Of A Soil Bacterium And An Arbuscular Mycorrhizal Fungus In Scallion," International Journal of Agriculture and Environmental Research, Malwa International Journals Publication, vol. 10(04), August.
    • Handle: RePEc:ags:ijaeri:345057
    DOI: 10.22004/ag.econ.345057
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    References listed on IDEAS

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    1. Yinong Li & Jiazheng Xu & Jin Hu & Tianyu Zhang & Xuefeng Wu & Yurong Yang, 2022. "Arbuscular Mycorrhizal Fungi and Glomalin Play a Crucial Role in Soil Aggregate Stability in Pb-Contaminated Soil," IJERPH, MDPI, vol. 19(9), pages 1-15, April.
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    Keywords

    Agribusiness; Farm Management;

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