Teamwork to Survive in Hostile Soils: Use of Plant Growth-Promoting Bacteria to Ameliorate Soil Salinity Stress in Crops

Abstract

Plants and their microbiomes, including plant growth-promoting bacteria (PGPB), can work as a team to reduce the adverse effects of different types of stress, including drought, heat, cold, and heavy metals stresses, as well as salinity in soils. These abiotic stresses are reviewed here, with an emphasis on salinity and its negative consequences on crops, due to their wide presence in cultivable soils around the world. Likewise, the factors that stimulate the salinity of soils and their impact on microbial diversity and plant physiology were also analyzed. In addition, the saline soils that exist in Mexico were analyzed as a case study. We also made some proposals for a more extensive use of bacterial bioinoculants in agriculture, particularly in developing countries. Finally, PGPB are highly relevant and extremely helpful in counteracting the toxic effects of soil salinity and improving crop growth and production; therefore, their use should be intensively promoted.

The 1-aminocyclopropane-1-carboxylic acid deaminase-producing Streptomyces violaceoruber UAE1 can provide protection from sudden decline syndrome on date palm

“…Similar to our results, Al Hamad et al (2021) have demonstrated that the ACCD-producing Streptomyces griseorubens UAE2 had augmentative BCA effects on royal poinciana plants inoculated with N. dimidiatum compared to S. wuyuanensis UAE1 that did not have ACCD activity. This supports previously published studies reporting that plants inoculated with BCAs possessing ACCD activity can make the plant more resistant to environmental stresses (Wang et al, 2000;El-Tarabily et al, 2019Mathew et al, 2020;Glick and Nascimento, 2021;Jiménez-Mejía et al, 2022) treated with the ACCD-producing Methylobacterium spp. significantly reduced wilt symptoms of Ralstonia solanacearum and lowered the ET emission (Yim et al, 2013).…”

“…In the current study, ten (five from each SA and NSA) isolates with multiple modes of action were in vitro active against F. solani (Table 1), confirming the importance of actinobacteria as potential BCAs against plant pathogens (Saeed et al, 2017a;Kamil et al, 2018;. It has been reported that inoculation of plants with ACCD-producing microorganisms can ameliorate the effect of environmental (biotic and abiotic) stresses in plants (Glick, 2014;Al Hamad et al, 2021;Glick and Nascimento, 2021;Jiménez-Mejía et al, 2022). In our study, the enzymatic activities of ACCD in these isolates were also measured.…”

Overview of biofertilizers in crop production and stress management for sustainable agriculture

“…Availability of nutrients and microbial diversity are also affected due to the salinity stress (Luo et al, 2021 ). Usage of bioinoculants is enormously supportive in countering the lethal properties of soil salinity via improving the soil physicochemical properties and thus improved crop production (Jiménez-Mejía et al, 2022 ). Interaction between microbes and plants can overcome stress problem.…”

Perspectives on Converting Keratin-Containing Wastes Into Biofertilizers for Sustainable Agriculture

“…Unlike organic and inorganic fertilizers rich in nutrients, biofertilizers contain living microbes that play important roles in promoting the growth of crops through enlarging the supply of essential nutrients absorbable by the crops (Jiménez-Mejía et al, 2022 ; Maitra et al, 2022 ). These living organisms that are helpful for plant growth usually include bacteria, blue-green algae, and mycorrhizal fungi (Kumar et al, 2022b ) and many types of biofertilizers are commercially available.…”