Salt-Tolerant and Plant Growth-Promoting Rhizobacteria: A New-Fangled Approach for Improving Crop Yield

Dutta, Subhadeep; Bhattacharjya, Debjoy; Sinha, Sangram; Mandal, Amit Kumar

doi:10.1007/978-3-030-65912-7_15

Cited by 5 publications

(2 citation statements)

References 88 publications

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“…Certain PGPR may improve plant absorption of N in rhizosphere soil [200]. For instance, inoculation with PGPR can boost N absorption and encourage the development of tomato (Solanum lycopersicum) plants under a rising N supply [201], similar to Singh et al [202], who selected 22 isolates from the rhizosphere of sugarcane (Saccharum officinarum).…”

Section: Remediation Of CD By Algaementioning

confidence: 99%

Recent Advances in Microbial-Assisted Remediation of Cadmium-Contaminated Soil

Zulfiqar,

Haider,

Maqsood

et al. 2023

Plants

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Soil contamination with cadmium (Cd) is a severe concern for the developing world due to its non-biodegradability and significant potential to damage the ecosystem and associated services. Industries such as mining, manufacturing, building, etc., rapidly produce a substantial amount of Cd, posing environmental risks. Cd toxicity in crop plants decreases nutrient and water uptake and translocation, increases oxidative damage, interferes with plant metabolism and inhibits plant morphology and physiology. However, various conventional physicochemical approaches are available to remove Cd from the soil, including chemical reduction, immobilization, stabilization and electro-remediation. Nevertheless, these processes are costly and unfriendly to the environment because they require much energy, skilled labor and hazardous chemicals. In contrasting, contaminated soils can be restored by using bioremediation techniques, which use plants alone and in association with different beneficial microbes as cutting-edge approaches. This review covers the bioremediation of soils contaminated with Cd in various new ways. The bioremediation capability of bacteria and fungi alone and in combination with plants are studied and analyzed. Microbes, including bacteria, fungi and algae, are reported to have a high tolerance for metals, having a 98% bioremediation capability. The internal structure of microorganisms, their cell surface characteristics and the surrounding environmental circumstances are all discussed concerning how microbes detoxify metals. Moreover, issues affecting the effectiveness of bioremediation are explored, along with potential difficulties, solutions and prospects.

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Section: Remediation Of CD By Algaementioning

confidence: 99%

Recent Advances in Microbial-Assisted Remediation of Cadmium-Contaminated Soil

Zulfiqar,

Haider,

Maqsood

et al. 2023

Plants

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“…Salinity and sodicity increase the concentration of ions in the soil solution, affecting electrical conductivity (EC), exchangeable sodium percentage (ESP), and pH (Osman & Osman, 2018; Oster & Shainberg, 2001; Rengasamy, 2006), diminishing microbial activity (K. Singh, 2016). Moreover, high salinity and sodicity impose restrictions on plant growth and development, including adverse effects on photosynthesis, protein synthesis, and lipid metabolism (Dutta et al, 2021), leading to significant reductions in crop yield. Several factors contribute to soil salinization and sodification, spanning natural processes (such as rainfall and rock weathering) to agricultural practices (including improper fertilizer application and irrigation with saline water) (Datta & De Jong, 2002; Várallyay, 1994).…”

Section: Introductionmentioning

confidence: 99%

Ameliorating saline‐sodic soils: A global meta‐analysis of field studies on the influence of exogenous amendments on crop yield

Wang,

Ding,

Wang

et al. 2024

Land Degrad Dev

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As the demand for food continues to rise, soil salinization and sodification pose an increasingly pressing challenge. Currently, there is a knowledge gap regarding how to effectively improve saline‐sodic soils to support sustainable agricultural production, especially the lack of systematic analysis on the effects of different amendments at a global scale. To address this gap, this study aims to explore the feasibility of using exogenous amendments to ameliorate saline‐sodic soils, conducting a global‐scale meta‐analysis based on 685 data pairs from 70 published studies. Our results showed that applying amendments to saline‐sodic soils significantly reduced electrical conductivity of saturated paste extract (ECe) by 33.0% and exchangeable sodium percentage (ESP) by 44.6%, while simultaneously increasing crop yield by 50.7%. Heterogeneity analysis further unveiled significant variations (p < 0.05) in the overall effect size, driven by factors such as initial soil properties (salinity and ESP levels), amendment type, climate and practical management conditions (application dose and experimental duration). The categorical variable analysis showed that, compared to soils with other salinization levels, the application of amendments in severe salinization soils was most effective in reducing soil ECe and enhancing crop yield. Considering the goals of mitigating soil salinity, sodicity, and increasing crop yield, the study suggests the application of mixed‐type amendments in practical settings. It is noteworthy that while extremely high doses (greater than 40 t ha−1) effectively increased crop yield, they also posed a risk of salt accumulation. In conclusion, this research offers critical insights for sustainable agriculture, guiding future work on soil health and food security in the context of global environmental challenges.

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