scholarly journals Plant-growth-promoting rhizobacteria to improve crop growth in saline soils: a review

2014 ◽  
Vol 34 (4) ◽  
pp. 737-752 ◽  
Author(s):  
Diby Paul ◽  
Harshad Lade
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Crop Growth ◽  
Saline Soils ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Salt-Tolerant Plant Growth Promoting Rhizobacteria for Enhancing Crop Productivity of Saline Soils

2019 ◽  
Vol 10 ◽  
Author(s):  
Dilfuza Egamberdieva ◽  
Stephan Wirth ◽  
Sonoko Dorothea Bellingrath-Kimura ◽  
Jitendra Mishra ◽  
Naveen K. Arora
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Crop Productivity ◽  
Saline Soils ◽  
Salt Tolerant ◽  
Tolerant Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Plant Growth Promoting Rhizobacterial Mitigation of Drought Stress in Crop Plants: Implications for Sustainable Agriculture

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 712 ◽  
Author(s):  
Omena Ojuederie ◽  
Oluwaseyi Olanrewaju ◽  
Olubukola Babalola
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Acc Deaminase ◽  
Plant Growth Promoting Rhizobacteria ◽  
Crop Growth ◽  
Growth And Yield ◽  
Growth Enhancement ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Effects Of Drought

Abiotic stresses arising from climate change negates crop growth and yield, leading to food insecurity. Drought causes oxidative stress on plants, arising from excessive production of reactive oxygen species (ROS) due to inadequate CO2, which disrupts the photosynthetic machinery of plants. The use of conventional methods for the development of drought-tolerant crops is time-consuming, and the full adoption of modern biotechnology for crop enhancement is still regarded with prudence. Plant growth-promoting rhizobacteria (PGPR) could be used as an inexpensive and environmentally friendly approach for enhancing crop growth under environmental stress. The various direct and indirect mechanisms used for plant growth enhancement by PGPR were discussed. Synthesis of 1-aminocyclopropane−1-carboxylate (ACC) deaminase enhances plant nutrient uptake by breaking down plant ACC, thereby preventing ethylene accumulation, and enable plants to tolerate water stress. The exopolysaccharides produced also improves the ability of the soil to withhold water. PGPR enhances osmolyte production, which is effective in reducing the detrimental effects of ROS. Multifaceted PGPRs are potential candidates for biofertilizer production to lessen the detrimental effects of drought stress on crops cultivated in arid regions. This review proffered ways of augmenting their efficacy as bio-inoculants under field conditions and highlighted future prospects for sustainable agricultural productivity.

scholarly journals Consortia of Plant-Growth-Promoting Rhizobacteria Isolated from Halophytes Improve Response of Eight Crops to Soil Salinization and Climate Change Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1609
Author(s):  
Susana Redondo-Gómez ◽  
Jennifer Mesa-Marín ◽  
Jesús A. Pérez-Romero ◽  
Javier López-Jurado ◽  
Jesús V. García-López ◽  
...  
Keyword(s):  
Climate Change ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Crop Productivity ◽  
Soil Salinization ◽  
Crop Growth ◽  
Future Climate Change ◽  
Climate Change Scenarios ◽  
Plant Growth Promoting ◽  
Growth Promoting

Soil salinization is an environmental problem that adversely affects plant growth and crop productivity worldwide. As an alternative to the conventional approach of breeding salt-tolerant plant cultivars, we explored the use of plant-growth-promoting rhizobacteria (PGPR) from halophytic plants to enhance crop growth under saline conditions. Here, we report the effect of five PGPR consortia from halophytes on the growth of eight (alfalfa, flax, maize, millet, rice, strawberry, sunflower, and wheat) of the crops most commonly produced on salinized soils worldwide. To test the efficiency of halotolerant consortia, we designed a complex environmental matrix simulating future climate-change scenarios, including increased CO2 levels and temperature. Overall, biofertilizers enhanced growth of most crops with respect to non-inoculated control plants under different CO2 concentrations (400/700 ppm), temperatures (25/+4 °C), and salinity conditions (0 and 85 mM NaCl). Biofertilizers counteracted the detrimental effect of salinity on crop growth. Specifically, strawberry and rice showed the greatest positive additive response to inoculation in the presence of salt; above-ground biomasses were 35% and 3% greater, respectively, than their respective control grown without salt. Furthermore, depending on the interaction of environmental factors (salinity × CO2 × temperature) analyzed, the results varied—influencing the most effective biofertilizer determined for each crop now, or in the future. Our findings highlight the importance of conducting studies that consider stress interaction for realistic assessments of the potential of biofertilizers in a climate-changed world.

scholarly journals Harnessing the Potential of Symbiotic Endophytic Fungi and Plant Growth-Promoting Rhizobacteria to Enhance Soil Quality in Saline Soils

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1810
Author(s):  
Zahra Rouydel ◽  
Mohsen Barin ◽  
Mir Hassan Rasouli-Sadaghiani ◽  
Maryam Khezri ◽  
Ramesh Raju Vetukuri ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Quality ◽  
Mycorrhizal Fungi ◽  
Microbial Biomass Carbon ◽  
Plant Growth Promoting Rhizobacteria ◽  
Basal Respiration ◽  
Saline Soils ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
And Control

Soil salinity is one of the most important abiotic stresses limiting crop growth and production worldwide. Some microorganisms can improve the plants’ tolerance to salinity. For this purpose, a greenhouse experiment was performed to understand the influence of various microorganisms on soil biological indices and wheat growth under different saline conditions. The factors varied in the experiment were the microbial treatment (rhizobacteria, mycorrhizal fungi, endophytic fungus, and control) and salinity stress (0.5, 8, and 14 dS m−1). Rhizobacteria were isolated from saline soils, but the fungi were prepared from a microbial bank. Overall, ten isolates were purified, and three with promising growth-promoting properties were identified using phenotypic and molecular methods. The selected isolates belonged to the genera Pseudomonas (P. aeruginosa Ur83 and P. fluorescens Ur67) and Stenotrophomonas (S. maltophilia Ur52). Soil quality indices were found to decrease with increasing salinity, but inoculation with microorganisms alleviated this decline. Inoculation with plant growth-promoting rhizobacteria (PGPRs) increased basal respiration, substrate-induced respiration, microbial biomass carbon, acid and alkaline phosphatase activities, and carbon availability by factors of 1.37, 1.27, 1.83, 3.07, 1.29, and 1.11, respectively. These results show that inoculation with symbiotic microorganisms can improve agricultural soil quality under saline conditions and may thus be valuable in agriculture.

Growth Enhancement of Chickpea in Saline Soils Using Plant Growth-Promoting Rhizobacteria

2011 ◽  
Vol 31 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Dhara Patel ◽  
Chaitanya Kumar Jha ◽  
Neelam Tank ◽  
Meenu Saraf
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Saline Soils ◽  
Growth Enhancement ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Halo-tolerant plant growth promoting rhizobacteria for improving productivity and remediation of saline soils

2020 ◽  
Vol 26 ◽  
pp. 69-82 ◽  
Author(s):  
Naveen Kumar Arora ◽  
Tahmish Fatima ◽  
Jitendra Mishra ◽  
Isha Mishra ◽  
Sushma Verma ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Saline Soils ◽  
Tolerant Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting
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