EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGUS, PLANT GROWTH PROMOTING RHIZOBACTERIUM AND DROUGHT STRESS ON DIFFERE

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LOTFI E.; BAGHERNEJAD M.; KARIMIAN N.A.; ZAREI M.

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Journal: Journal of Water and Soil Conservation Year:2016 | Volume:22 | Issue:6 Page(s): 271-282

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Title

EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGUS, PLANT GROWTH PROMOTING RHIZOBACTERIUM AND DROUGHT STRESS ON DIFFERE

Author(s)

LOTFI E. | BAGHERNEJAD M. | KARIMIAN N.A. | ZAREI M. | Issue Writer Certificate

Keywords

PSEUDOMONAS FLUORESCENCEQ2

GLOMUS INTRARADICESQ2

DROUGHT STRESSQ1

POTASSIUM UPTAKEQ2

MAIZEQ2

Abstract

Background and Objectives: Mineral weathering and the release of nutrients such as potassium increase in the presence of microorganisms. Arbuscular mycorrhizal fungi and plant growth promoting bacteria in addition to improved plant growth and nutrition and physical, chemical and biological soil properties can support host plants against environmental stresses such as drought. Considering the limited information, this greenhouse study was carried out to evaluate the effects of microbial and environmental agents on different forms of potassium in a calcareous soil and also potassium absorption by MAIZE plant.Materials and Methods: A greenhouse experiment was set up with a completely randomized design and factorial arrangement in three replications. The factors were consisted of arbuscular mycorrhizal (AM) fungus at two levels: G0 (not inoculated with fungus) and G1 (inoculated with GLOMUS INTRARADICES), bacteria at two levels: B0 (not inoculated with bacterium) and B1 (inoculated with PSEUDOMONAS FLUORESCENCE) and DROUGHT STRESS at four levels: S0 (without stress), S1 (%75 FC), S2 (%50 FC) and S3 (%25 FC). After plant harvesting, shoot dry weight, potassium concentration and uptake in aerial parts and root colonization with standard methods were measured. The soil samples were air- dried and used for determination of different forms of potassium and then the results analyzed.Results: As DROUGHT STRESS increased, the concentration of potassium different forms and uptake increased and root colonization percent decreased. Co-application of mycorrhizal fungus and bacterium significantly increased root colonization percent. With increasing DROUGHT STRESS levels, single using of fungus and co-application of mycorrhizal fungus and bacterium in comparison with non inoculated treatments increased the concentration of potassium different forms in soil and its uptake by plant.Conclusion: Plant growth promoting bacterium, mycorrhizal symbiosis and their interactions have significant positive effects on POTASSIUM UPTAKE and their different forms in soil.

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APA: Copy

LOTFI, E., BAGHERNEJAD, M., KARIMIAN, N.A., & ZAREI, M.. (2016). EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGUS, PLANT GROWTH PROMOTING RHIZOBACTERIUM AND DROUGHT STRESS ON DIFFERE. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 22(6), 271-282. SID. https://sid.ir/paper/156361/en

Vancouver: Copy

LOTFI E., BAGHERNEJAD M., KARIMIAN N.A., ZAREI M.. EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGUS, PLANT GROWTH PROMOTING RHIZOBACTERIUM AND DROUGHT STRESS ON DIFFERE. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2016;22(6):271-282. Available from: https://sid.ir/paper/156361/en

IEEE: Copy

E. LOTFI, M. BAGHERNEJAD, N.A. KARIMIAN, and M. ZAREI, “EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGUS, PLANT GROWTH PROMOTING RHIZOBACTERIUM AND DROUGHT STRESS ON DIFFERE,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 22, no. 6, pp. 271–282, 2016, [Online]. Available: https://sid.ir/paper/156361/en

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