Enhancement of Growth and Grain Yield of Rice in Nutrient Deficient Soils by Rice Probiotic Bacteria

Authors

Mohibul A. Khan, Bangabandhu Sheikh Mujibur Rahman Agricultural University
Effi Haque, Bangabandhu Sheikh Mujibur Rahman Agricultural University
Narayan C. Paul, Bioenergy Crop Research Institute, Muan
Abdul Khaleque, North South University
Saleh M S Al-Garni, King Abdulaziz University, Saudi Arabia
Mahfuzur Rahman, West Virginia University
Tofazzal Islam, Bangabandhu Sheikh Mujibur Rahman Agricultural University

Author ORCID Identifier

N/A

https://orcid.org/0000-0002-5176-2318

https://orcid.org/0000-0001-6568-515X

https://orcid.org/0000-0002-6873-9165

N/A

N/A

https://orcid.org/0000-0002-7613-0261

Document Type

Article

Publication Date

2017

College/Unit

Davis College of Agriculture, Natural Resources and Design

Department/Program/Center

Agricultural & Extension Education

Abstract

Plant associated bacteria are promising alternatives to chemical fertilizers for plant growth and yield improvement in an eco-friendly manner. In this study, rice associated bacteria were isolated and assessed for mineral phosphate solubilizationand indole-3-acetic acid (IAA) production activity in vitro. Six promising strains, which were tentatively identified as phylotaxon Pseudochrobactrum sp. (BRRh-1), Burkholderia sp. (BRRh-2), Burkholderia sp. (BRRh-3), Burkholderia sp. (BRRh-4), Pseudomonas aeruginosa (BRRh-5 and BRRh-6) based on their 16S rRNA gene phylogeny, exhibited significant phosphate solubilizing activity in National Botanical Research Institute phosphate growth medium, and BRRh-4 displayed the highest phosphate solubilizing activity, followed by BRRh-5. The pH of the culture broth declined, resulting in increase of growth rate of bacteria at pH 7, which might be due to organic acid secretion by the strains. In presence of L-tryptophan, five isolates synthesized IAA and the maximum IAA was produced by BRRh-2, followed by BRRh-1. Application of two most efficient phosphate solubilizing isolates BRRh-4 and BRRh-5 by root dipping (colonization) of seedling and spraying at the flowering stage significantly enhanced the growth and grain yield of rice variety BRRI dhan-29. Interestingly, application of both strains with 50% of recommended nitrogen, phosphorus and potassium fertilizers produced equivalent or higher grain yield of rice compared to the control grown with full recommended fertilizer doses, which suggests that these strains may have the potential to be used as bioinoculants for sustainable rice production.

Digital Commons Citation

Khan, Mohibul A.; Haque, Effi; Paul, Narayan C.; Khaleque, Abdul; Al-Garni, Saleh M S; Rahman, Mahfuzur; and Islam, Tofazzal, "Enhancement of Growth and Grain Yield of Rice in Nutrient Deficient Soils by Rice Probiotic Bacteria" (2017). Faculty & Staff Scholarship. 1508.
https://researchrepository.wvu.edu/faculty_publications/1508

Source Citation

Khan, M. M. A., Haque, E., Paul, N. C., Khaleque, M. A., Al-Garni, S. M. S., Rahman, M., & Islam, M. T. (2017). Enhancement of Growth and Grain Yield of Rice in Nutrient Deficient Soils by Rice Probiotic Bacteria. Rice Science, 24(5), 264–273. https://doi.org/10.1016/j.rsci.2017.02.002

Comments

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Copyright © 2017, China National Rice Research Institute. Hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (Thhttips:i/s/carneaotpiveencoacmcmesosnasr.toicrgle/liucnednesresth/beyC-nCc-BnYd/-4N.0C/)-.ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer review under responsibility of China National Rice Research Institute

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http://dx.doi.org/10.1016/j.rsci.2017.02.002