Mitigation of salinity stress in plants using plant growth promoting bacteria

Symbiosis ◽  
2019 ◽  
Vol 79 (3) ◽  
pp. 191-204 ◽  
Author(s):  
Komal K. Bhise ◽  
Padma B. Dandge
Keyword(s):  
Plant Growth ◽  
Salinity Stress ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Plant-Growth-Promoting Bacteria Mitigating Soil Salinity Stress in Plants

2020 ◽  
Vol 10 (20) ◽  
pp. 7326
Author(s):  
Stefan Shilev
Keyword(s):  
Plant Growth ◽  
Salinity Stress ◽  
Soil Salinity ◽  
Soil Salinization ◽  
Plant Growth Promoting Bacteria ◽  
Plant Tolerance ◽  
Beneficial Effects ◽  
Negative Effect ◽  
Plant Growth Promoting ◽  
Growth Promoting

Soil deterioration has led to problems with the nutrition of the world’s population. As one of the most serious stressors, soil salinization has a negative effect on the quantity and quality of agricultural production, drawing attention to the need for environmentally friendly technologies to overcome the adverse effects. The use of plant-growth-promoting bacteria (PGPB) can be a key factor in reducing salinity stress in plants as they are already introduced in practice. Plants having halotolerant PGPB in their root surroundings improve in diverse morphological, physiological, and biochemical aspects due to their multiple plant-growth-promoting traits. These beneficial effects are related to the excretion of bacterial phytohormones and modulation of their expression, improvement of the availability of soil nutrients, and the release of organic compounds that modify plant rhizosphere and function as signaling molecules, thus contributing to the plant’s salinity tolerance. This review aims to elucidate mechanisms by which PGPB are able to increase plant tolerance under soil salinity.

scholarly journals Rhizobacteria Isolated from Saline Soil Induce Systemic Tolerance in Wheat (Triticum aestivum L.) against Salinity Stress

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 989 ◽  
Author(s):  
Noshin Ilyas ◽  
Roomina Mazhar ◽  
Humaira Yasmin ◽  
Wajiha Khan ◽  
Sumera Iqbal ◽  
...  
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Salinity Stress ◽  
Plant Biomass ◽  
Growth Promotion ◽  
Soluble Sugar ◽  
Wheat Crop ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Halo-tolerant plant growth-promoting rhizobacteria (PGPR) have the inherent potential to cope up with salinity. Thus, they can be used as an effective strategy in enhancing the productivity of saline agro-systems. In this study, a total of 50 isolates were screened from the rhizospheric soil of plants growing in the salt range of Pakistan. Out of these, four isolates were selected based on their salinity tolerance and plant growth promotion characters. These isolates (SR1. SR2, SR3, and SR4) were identified as Bacillus sp. (KF719179), Azospirillum brasilense (KJ194586), Azospirillum lipoferum (KJ434039), and Pseudomonas stutzeri (KJ685889) by 16S rDNA gene sequence analysis. In vitro, these strains, in alone and in a consortium, showed better production of compatible solute and phytohormones, including indole acetic acid (IAA), gibberellic acid (GA), cytokinin (CK), and abscisic acid (ABA), in culture conditions under salt stress. When tested for inoculation, the consortium of all four strains showed the best results in terms of improved plant biomass and relative water content. Consortium-inoculated wheat plants showed tolerance by reduced electrolyte leakage and increased production of chlorophyll a, b, and total chlorophyll, and osmolytes, including soluble sugar, proline, amino acids, and antioxidant enzymes (superoxide dismutase, catalase, peroxidase), upon exposure to salinity stress (150 mM NaCl). In conclusion, plant growth-promoting bacteria, isolated from salt-affected regions, have strong potential to mitigate the deleterious effects of salt stress in wheat crop, when inoculated. Therefore, this consortium can be used as potent inoculants for wheat crop under prevailing stress conditions.

scholarly journals Application of Zinc Oxide Nanoparticles and Plant Growth Promoting Bacteria Reduces Genetic Impairment under Salt Stress in Tomato (Solanum lycopersicum L. ‘Linda’)

Agriculture ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 521
Author(s):  
Arash Hosseinpour ◽  
Kamil Haliloglu ◽  
Kagan Tolga Cinisli ◽  
Guller Ozkan ◽  
Halil Ibrahim Ozturk ◽  
...  
Keyword(s):  
Plant Growth ◽  
Salinity Stress ◽  
Zinc Oxide Nanoparticles ◽  
Lactobacillus Casei ◽  
Cytosine Methylation ◽  
Plant Growth Promoting Bacteria ◽  
Zno Nps ◽  
Solanum Lycopersicum L ◽  
Plant Growth Promoting ◽  
Growth Promoting

Salinity is an edaphic stress that dramatically restricts worldwide crop production. Nanomaterials and plant growth-promoting bacteria (PGPB) are currently used to alleviate the negative effects of various stresses on plant growth and development. This study investigates the protective effects of different levels of zinc oxide nanoparticles (ZnO-NPs) (0, 20, and 40 mg L−1) and PGPBs (no bacteria, Bacillus subtilis, Lactobacillus casei, Bacillus pumilus) on DNA damage and cytosine methylation changes in the tomato (Solanum lycopersicum L. ‘Linda’) seedlings under salinity stress (250 mM NaCl). Coupled Restriction Enzyme Digestion-Random Amplification (CRED-RA) and Randomly Amplified Polymorphic DNA (RAPD) approaches were used to analyze changes in cytosine methylation and to determine how genotoxic effects influence genomic stability. Salinity stress increased the polymorphism rate assessed by RAPD, while PGPB and ZnO-NPs reduced the adverse effects of salinity stress. Genomic template stability was increased by the PGPBs and ZnO-NPs application; this increase was significant when Lactobacillus casei and 40 mg L−1 of ZnO-NPs were used.A decreased level of DNA methylation was observed in all treatments. Taken together, the use of PGPB and ZnO-NPs had a general positive effect under salinity stress reducing genetic impairment in tomato seedlings.

scholarly journals Halotolerant Plant Growth Promoting Bacteria Mediated Salinity Stress Amelioration in Plants

2016 ◽  
Vol 49 (4) ◽  
pp. 355-367 ◽  
Author(s):  
Wansik Shin ◽  
Md. Ashaduzzaman Siddikee ◽  
Manoharan Melvin Joe ◽  
Abitha Benson ◽  
Kiyoon Kim ◽  
...  
Keyword(s):  
Plant Growth ◽  
Salinity Stress ◽  
Plant Growth Promoting Bacteria ◽  
Stress Amelioration ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Plant Growth-Promoting Bacteria: Biological Tools for the Mitigation of Salinity Stress in Plants

2020 ◽  
Vol 11 ◽  
Author(s):  
Akhilesh Kumar ◽  
Saurabh Singh ◽  
Anand Kumar Gaurav ◽  
Sudhakar Srivastava ◽  
Jay Prakash Verma
Keyword(s):  
Plant Growth ◽  
Salinity Stress ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting
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