Effect of fluorescent pseudomonads with ACC deaminase activity on micronutrients concentration, root weight and biological yield of rice (Oryza sativa L. ) under salinity stress

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RAJABI AGEREH S.; KHAVAZI K.; RAMEZANPOUR M.R.; AFZALI M.

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Journal: Journal of Soil Management and Sustainable Production Year:2020 | Volume:10 | Issue:2 Page(s): 107-123

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Title

Effect of fluorescent pseudomonads with ACC deaminase activity on micronutrients concentration, root weight and biological yield of rice (Oryza sativa L. ) under salinity stress

Author(s)

RAJABI AGEREH S. | KHAVAZI K. | RAMEZANPOUR M.R. | AFZALI M. | Issue Writer Certificate

Keywords

Nutrient elementsQ1

Plant Growth Promoting bacteriaQ2

RiceQ1

Salinity of irrigation waterQ2

Abstract

Background and Objectives: Soil and water salinity is the major limiting factors for plant growth and crop production. Water and soil salinity almost limit plant growth through increasing osmotic pressure, specific toxicity of some ions such as sodium and chloride, and nutritional imbalance. In addition to, salinity stress reduces root and plant growth via increasing hormone level. One of the strategies to deal with salinity is inoculation of seeds with plant growth-promoting rhizobacteria (PGPR). A number of growth-promoting bacteria increase plant growth under saline conditions by decreasing plant ethylene levels by deamination of ACC (ethylene synthesis precursor in plant). For determination of nutrient concentration, leaf and seed samples were prepared. Materials and Methods: The effect of four strains of fluorescent pseudomonads on uptake of micronutrients in Rice was studied under saline irrigation. Greenhouse tests were performed as factorial experiment in a completely randomized design with four replications. First factor was salinity water in five levels (0. 7, 1. 4, 2. 8, 4. 2 and 5. 6 ds/m originated from sea water) and the second factor was pseudomonads strains (Pseudomonas putida 4, 11 and 108, and Pseudomonas fluorescens 169 and a non-inoculated control). Root of Rice (cv. Tarom) transplants was inoculated with mentined strains before planting in pots. During growth period, the pots were irrigated with the abovementioned saline water upto saturation point. In the flowering stage, flag leaf samples were collected to determine Manganese, Iron, Zinc and copper concentration. The content of micronutrients in seed samples was also measured. Results: The effect of inoculation of fluorescent growth promoting bacteria with ACC deaminase production ability on root weight and biological yield of Rice was significantly decreased with increasing Salinity of irrigation water root weight and biological yield of Rice. In all salinity levels, inoculation of Rice with growth promoting bacteria increased root weight and biological yield of Rice. The treatments inoculated with T4 had the highest root weight and biological yield. The results showed that increasing the salinity level significantly reduced all microelements contents in the leaf and seed. Rice inoculation with different strains of P. fluorescens and P. putida affected on nutrients concentrations under saline irrigation and it increased content of the elements compared to control. At all salinity levels, maximum iron concentration observed by inoculation of roots with P. fluorescent 169.Conclusion: Inoculation of Rice with various strains of fluorescent pseudomonads and P. putida affected the concentration of micronutrients under saline water irrigation in Rice and caused to increase these elements more than control. Therefore, up to the highest salinity level, using strains of fluorescent pseudomonas can be growth up of Rice plant in saline conditions.

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APA: Copy

RAJABI AGEREH, S., KHAVAZI, K., RAMEZANPOUR, M.R., & AFZALI, M.. (2020). Effect of fluorescent pseudomonads with ACC deaminase activity on micronutrients concentration, root weight and biological yield of rice (Oryza sativa L. ) under salinity stress. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, 10(2 ), 107-123. SID. https://sid.ir/paper/386434/en

Vancouver: Copy

RAJABI AGEREH S., KHAVAZI K., RAMEZANPOUR M.R., AFZALI M.. Effect of fluorescent pseudomonads with ACC deaminase activity on micronutrients concentration, root weight and biological yield of rice (Oryza sativa L. ) under salinity stress. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION[Internet]. 2020;10(2 ):107-123. Available from: https://sid.ir/paper/386434/en

IEEE: Copy

S. RAJABI AGEREH, K. KHAVAZI, M.R. RAMEZANPOUR, and M. AFZALI, “Effect of fluorescent pseudomonads with ACC deaminase activity on micronutrients concentration, root weight and biological yield of rice (Oryza sativa L. ) under salinity stress,” ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, vol. 10, no. 2 , pp. 107–123, 2020, [Online]. Available: https://sid.ir/paper/386434/en

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