Long-term adaptation study of bacterial isolates of plant growth-promoting bacteria in heat-stressed conditions Long-term adaptation study of bacterial isolates
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Abstract
In many bacterial species, there is still a lack of comprehensive research and characterization of the basic mechanisms behind bacterial adaptation. Furthermore, it's still unclear if prokaryotes can learn by association and adaptation. Since Plant Growth Promoting Bacteria (PGPB) are essential to the preservation of plant physiology and growth across a range of stress scenarios, PGPB can be utilized to analyze this adaptation of bacteria under stress. This study examines the initial findings on adaptive flexibility in PGPB under conditions of heat stress. The performance of the isolated PGPB receiving both periodic and non-periodic heat stress was compared to that of the control group. Characteristics such as ammonia and siderophore production, phosphate utilization, and amount of indole-3-acetic acid produced, as well as anti-oxidant activities like DPPH activity, hydroxyl radical scavenging activity, and hydrogen peroxide scavenging activity were analysed. Following heat stress treatment, it was clear from the isolated PGPB that those under periodic stress were able to outperform the PGPB exposed to non-periodic stress in comparison to the control. When compared to the other isolates in our investigation, the two novel strains of Paenibacillus alvei SJ6 and Paenibacillus alvei SJ8, among the four isolated PGPB have demonstrated the greatest capacity to respond to sporadic heat stress. Therefore, preliminary evidence for the existence of history-dependent adaptation has been examined in this work.
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Hakim, S., Naqqash, T., Nawaz, M. S., Laraib, I., Siddique, M. J., Zia, R., Mehmood, A. Rhizosphere engineering with plant growth-promoting microorganisms for agriculture and ecological sustainability. Frontiers in Sustainable Food Systems, 2021, 5(2): 617157. https://doi.org/10.3389/fsufs.2021.617157
Hasanuzzaman M., Nahar K., Alam M.M., Roychowdhury R., Fujita M. Physiological, biochemical, and molecular mechanisms of heat stress tolerance in plants. International Journal of Molecular Science, 2013, 14(5): 9643-9684. https://doi.org/10.3390/ijms14059643
Hasanuzzaman M., Nahar K., Fujit M. Extreme Temperature Responses, Oxidative Stress and Antioxidant Defense in Plants. In: Abiotic Stress - Plant Responses and Applications in Agriculture,
(K.Vahdati and C. Leslie Eds.). IntechOpen. 2013, рр. 169-205, Print ISBN: 978-953-51-1024-8, eBook ISBN: 978-953-51-4254-6, https://doi.org/10.5772/54833
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Johnson, J. S., Spakowicz, D. J., Hong, B. Y., Petersen, L. M., Demkowicz, P., Chen, L., Leopold, S. R., Hanson, B. M., Agresta, H. O., Gerstein, M., Sodergren, E. Evaluation of 16S rRNA gene sequencing for species and strain-level microbiome analysis. Nature Communications, 2019, 10(11): 5029. https://doi.org/10.1038/s41467-019-13036-1
Kapadia, C., Patel, N., Rana, A., Vaidya, H., Alfarraj, S., Ansari, M. J., Jha, B. Evaluation of plant growth-promoting and salinity-ameliorating potential of halophilic bacteria isolated from saline soil. Frontiers in Plant Science, 2022, 13(8): 946217. https://doi.org/10.3389/fpls.2022.946217
Karthik L., Kumar G., Bhaskara Rao K.V. Antioxidant activity of a newly discovered lineage of marine actinobacteria. Asian Pacific Journal of Tropical Medicine, 2013; 6(4): 325-332. https://doi.org/10.1016/S1995-7645(13)60055-1
Kumar, N., Kumar, A., Jeena, N., Singh, R., & Singh, H. Factors influencing soil ecosystem and agricultural productivity at higher altitudes. In: Microbiological Advancements for Higher Altitude Agro-Ecosystems & Sustainability (R. Goel, R. Soni, D.C. Suyal Eds.), Springer Singapore, 2020, pp. 55-70. Hardcover ISBN: 978-981-15-1901-7; Softcover ISBN: 978-981-15-1904-8; eBook ISBN: 978-981-15-1902-4; Series ISSN: 2523-8442; Series E-ISSN: 2523-8450; Edition 1. https://doi.org/10.1007/978-981-15-5089-2_4
Kumari S., Kumar P., Kiran S., Kumari S., Singh A. Optimization of siderophore production by Bacillus subtilis DR2 and its effect on growth promotion of Coriandrum sativum. Russian Agriculture Scientific, 2022, 48(6): 467-475. https://doi.org/10.3103/S1068367422060091
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Maury, G.L., Rodríguez, D.M., Hendrix, S., Rodríguez, H., González, R., Aragón, C. Antioxidants in plants: a valorization potential emphasizing the need for the conservation of plant biodiversity in Cuba. Antioxidants, 2020, 9(11): 1048. https://doi.org/10.3390/antiox9111048
Mitra, D., Díaz-Rodríguez, A. M., Parra-Cota, F.I., Khoshru, B., Rahman, M.H., Mahmud, N. Amelioration of thermal stress in crops by plant growth-promoting rhizobacteria. Physiological and Molecular Plant Pathology, 2021, 115(8): 101679. https://doi.org/10.1016/j.pmpp.2021.101679
Pajuelo-Domínguez, E., Arjona, S., Rodríguez-Llorente, I.D., Cubo, T., Ruiz-Lozano, J.M., Mateos-Naranjo, E. Coastal ecosystems as sources of biofertilizers in agriculture: From genomics to application in an urban orchard. Frontiers in Marine Science, 2021,.8(8): 685076. https://doi.org/10.3389/fmars.2021.685076
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Rajawat, M.V.S., Singh, R., Singh, D., Patel, P., Sahay, H., Gaur, R.K. Spatial distribution and identification of bacteria in stressed environments capable of weathering potassium aluminosilicate mineral. Brazilian Journal of Microbiology, 2020, 51(2): 751-764. https://doi.org/10.1007/s42770-019-00183-1
Rapparini F., Tam Y.Y., Cohen J.D., Slovin J.P. Indole-3-acetic acid metabolism in Lemna gibba undergoes dynamic changes in response to growth temperature. Plant Physiology, 2002,128(4): 1410-1416. https://doi.org/10.1104/pp.010931
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How to Cite
JEEVAN, Swetha; D, Sayantan.
Long-term adaptation study of bacterial isolates of plant growth-promoting bacteria in heat-stressed conditions.
Food Science and Applied Biotechnology, [S.l.], v. 9, n. 1, p. 194-208, mar. 2026.
ISSN 2603-3380.
Available at: <https://www.ijfsab.com/index.php/fsab/article/view/557>. Date accessed: 19 may 2026.
doi: https://doi.org/10.30721/fsab2026.v9.i1.557.