Multifunctional Biofertilizer from Pseudomonas Putida PT: A Potential Approach for Simultaneous Improving Maize Growth and Bioremediation of Cadmium-polluted Soils

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Khashei Sanaz; ETEMADIFAR ZAHRA; RAHMANI HAMID REZA

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Journal: Journal of Microbial Biology Year:2020 | Volume:8 | Issue:32 Page(s): 117-129

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Title

Multifunctional Biofertilizer from Pseudomonas Putida PT: A Potential Approach for Simultaneous Improving Maize Growth and Bioremediation of Cadmium-polluted Soils

Author(s)

Khashei Sanaz | ETEMADIFAR ZAHRA | RAHMANI HAMID REZA | Issue Writer Certificate

Keywords

BiofertilizerQ2

BioremediationQ2

BiofilmQ1

CadmiumQ1

Cell ImmobilizationQ2

ChemotaxisQ1

Plant Growth PromotingQ1

Seed ImmersionQ1

Abstract

Introduction: Pollution of agricultural soils with heavy metals is a serious problem in the world. The aim of this study was to produce a multipurpose Biofertilizer which can remove Cadmium from polluted soils as well as enhancing plant growth. Materials and methods: To study the ability of Pseudomonas putida strain PT for establishing an effective relationship with plants, the effects of some compounds present in plant root exudates were examined on Chemotaxis, growth, and Biofilm formation of bacteria. Pot experiments were performed by using Biofertilizers prepared from P. putida PT by two different methods including Seed Immersion and immobilization of the bacterial cells on rice bran as carrier. After measuring the fresh weight and dry weight of each plant, Cadmium concentrations in plant aerial tissues and soil in the presence and absence of Biofertilizers was measured by atomic absorption spectrometry. Results: Results showed positive chemotactic responses of P. putida PT to sucrose, mannitol, glucose, alanine, histidine, tryptophan, succinic acid, malic acid, and citric acid. Succinic acid, mannitol, and sucrose promoted both Biofilm formation and growth of P. putida PT. Malic acid enhanced only the bacterial growth, whereas histidine, tryptophan and glucose promoted Biofilm formation. Both Biofertilizers enhanced the fresh and dry weight of maize plants about 2-fold. The maximum reduction of Cadmium concentration in the soil was observed in the presence of immobilized cells (97. 57%), followed by the inoculation of bacterial cells by Seed Immersion method (68. 67%). Cadmium concentration in plants was decreased from 6310 ppb in control experiment to 885 ppb and 2917. 5 ppb in the presence of Biofertilizers produced by Cell Immobilization and Seed Immersion techniques, respectively. Discussion and conclusion: Using these fertilizers is an approach to promote maize growth in Cadmium contaminated soils along with decreasing metal concentrations in soil and plant.

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APA: Copy

Khashei, Sanaz, ETEMADIFAR, ZAHRA, & RAHMANI, HAMID REZA. (2020). Multifunctional Biofertilizer from Pseudomonas Putida PT: A Potential Approach for Simultaneous Improving Maize Growth and Bioremediation of Cadmium-polluted Soils. BIOLOGICAL JOURNAL OF MICROORGANISM, 8(32 ), 117-129. SID. https://sid.ir/paper/237330/en

Vancouver: Copy

Khashei Sanaz, ETEMADIFAR ZAHRA, RAHMANI HAMID REZA. Multifunctional Biofertilizer from Pseudomonas Putida PT: A Potential Approach for Simultaneous Improving Maize Growth and Bioremediation of Cadmium-polluted Soils. BIOLOGICAL JOURNAL OF MICROORGANISM[Internet]. 2020;8(32 ):117-129. Available from: https://sid.ir/paper/237330/en

IEEE: Copy

Sanaz Khashei, ZAHRA ETEMADIFAR, and HAMID REZA RAHMANI, “Multifunctional Biofertilizer from Pseudomonas Putida PT: A Potential Approach for Simultaneous Improving Maize Growth and Bioremediation of Cadmium-polluted Soils,” BIOLOGICAL JOURNAL OF MICROORGANISM, vol. 8, no. 32 , pp. 117–129, 2020, [Online]. Available: https://sid.ir/paper/237330/en

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