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Influence of the Rhizobacterium Rhodobacter sphaeroides KE149 and Biochar on Waterlogging Stress Tolerance in Glycine max L.

Department of Applied Biosciences, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Korea
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Academic Editor: Wen-tien Tsai
Environments 2021, 8(9), 94; https://doi.org/10.3390/environments8090094
Received: 6 August 2021 / Revised: 31 August 2021 / Accepted: 13 September 2021 / Published: 15 September 2021
In the context of the current climate change and increasing population scenarios, waterlogging stress in plants represents a global threat to sustainable agriculture production. Plant-growth-promoting rhizobacteria and biochar have been widely reported to mitigate the effects of several abiotic stresses. Hence, in the present study, we examined the effect of the rhizobacterium Rhodobacter sphaeroides KE149 and biochar on soybean plants subjected to sufficient water supply and waterlogging stress conditions. Our results revealed that KE149 and biochar inoculation significantly improved plant morphological attributes, such as root length, shoot length, and fresh biomass. The biochemical analysis results showed that the two treatments determined a significant drop in the levels of endogenous phytohormones (such as abscisic acid) under normal conditions, which were considerably enhanced under waterlogging stress. However, the jasmonic acid content increased with the application of biochar and KE149 under normal conditions, and it considerably decreased under waterlogging stress. Moreover, proline, methionine, and aspartic acid were significantly increased, whereas the phenolic and flavonoid contents were reduced with the application of the two treatments under waterlogging stress. These results suggest that the application of KE149 and biochar can be a safe biological tool with which to improve the physiology and productivity of soybean plants exposed to waterlogging stress. View Full-Text
Keywords: biochar; soybean; Rhodobacter sphaeroides KE149; waterlogging; abiotic stress biochar; soybean; Rhodobacter sphaeroides KE149; waterlogging; abiotic stress
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MDPI and ACS Style

Kang, S.-M.; Adhikari, A.; Khan, M.A.; Kwon, E.-H.; Park, Y.-S.; Lee, I.-J. Influence of the Rhizobacterium Rhodobacter sphaeroides KE149 and Biochar on Waterlogging Stress Tolerance in Glycine max L. Environments 2021, 8, 94. https://doi.org/10.3390/environments8090094

AMA Style

Kang S-M, Adhikari A, Khan MA, Kwon E-H, Park Y-S, Lee I-J. Influence of the Rhizobacterium Rhodobacter sphaeroides KE149 and Biochar on Waterlogging Stress Tolerance in Glycine max L. Environments. 2021; 8(9):94. https://doi.org/10.3390/environments8090094

Chicago/Turabian Style

Kang, Sang-Mo, Arjun Adhikari, Muhammad A. Khan, Eun-Hae Kwon, Yong-Sung Park, and In-Jung Lee. 2021. "Influence of the Rhizobacterium Rhodobacter sphaeroides KE149 and Biochar on Waterlogging Stress Tolerance in Glycine max L." Environments 8, no. 9: 94. https://doi.org/10.3390/environments8090094

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