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Halotolerant plant growth-promoting rhizobacteria isolated from saline soil improve nitrogen fixation and alleviate salt stress in rice plants

Khumairah, Fiqriah Hanum and Mieke Rochimi Setiawati, Mieke Rochimi Setiawati and Betty Natalie Fitriatin, Betty Natalie Fitriatin and Tualar Simarmata, Tualar Simarmata and Alfaraj, Saleh and Ansari, Mohammad Javed and El Enshasy, Hesham A. and Sayyed, R. Z. and Najafi, Solmaz (2022) Halotolerant plant growth-promoting rhizobacteria isolated from saline soil improve nitrogen fixation and alleviate salt stress in rice plants. Frontiers in Microbiology, 13 (NA). pp. 1-14. ISSN 1664-302X

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Official URL: http://dx.doi.org/10.3389/fmicb.2022.905210

Abstract

Salinity is one of the most damaging abiotic stresses due to climate change impacts that affect the growth and yield of crops, especially in lowland rice fields and coastal areas. This research aimed to isolate potential halotolerant plant growth-promoting rhizobacteria from different rhizo-microbiome and use them as effective bioinoculants to improve rice growth under salinity stress conditions. Bioassay using rice seedlings was performed in a randomized block design consisting of 16 treatments (control and 15 bacterial isolates) with three replications. Results revealed that isolates S3, S5, and S6 gave higher shoot height, root length, and plant dry weight compared with control (without isolates). Based on molecular characteristics, isolates S3 and S5 were identified as Pseudomonas stutzeri and Klebsiella pneumonia. These isolates were able to promote rice growth under salinity stress conditions as halotolerant plant growth-promoting rhizobacteria. These three potent isolates were found to produce indole-3-acetic acid and nitrogenase.

Item Type:Article
Uncontrolled Keywords:climate change, halotolerant, nitrogen fixation, PGPR, salinity, salt stress
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:104085
Deposited By: Widya Wahid
Deposited On:17 Jan 2024 00:46
Last Modified:17 Jan 2024 00:46

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