Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems
IntroductionHydroponic cultivation systems using desalinated groundwater may play pivotal role in reducing freshwater consumption for irrigation. However, reliance on desalination remains unsustainable due to its high cost, energy demand, and the serious environmental impacts of its brine byproducts...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Sustainable Food Systems |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsufs.2024.1520444/full |
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| author | Fatma Masmoudi Imen Saadaoui Saoussen Ben Khedher Saoussen Ben Khedher Slim Tounsi |
| author_facet | Fatma Masmoudi Imen Saadaoui Saoussen Ben Khedher Saoussen Ben Khedher Slim Tounsi |
| author_sort | Fatma Masmoudi |
| collection | DOAJ |
| description | IntroductionHydroponic cultivation systems using desalinated groundwater may play pivotal role in reducing freshwater consumption for irrigation. However, reliance on desalination remains unsustainable due to its high cost, energy demand, and the serious environmental impacts of its brine byproducts. Producing a biofertilizer that enables groundwater irrigation in hydroponics by enhancing plant halotolerance and resistance to salt stress offers a promising solution to address freshwater scarcity and low soil quality in arid and semi-arid regions, such as the Arabian Gulf.MethodsThis study investigates the potential of Bacillus spizizenii FMH45 in field experiment to enhance tomato plant production under greenhouse cultivation in hydroponics using directly groundwater for irrigation without desalination.Results and discussionResults demonstrated that the FMH45-based biofertilizer (HB45) significantly improved plant physiological parameters under greenhouse conditions. These improvements included a notable increase in shoot elongation (>13%), enhanced SPAD index values (>8%), and significant rises in flower and fruit counts (≃ 11% and 22%, respectively). B. spizizenii HB45 showed significant potential to increase bacterial densities by over 100-fold in various plant organs under saline irrigation and prevent salt infiltration into internal plant tissues. Furthermore, HB45-treatment enhanced the plant oxidative stress response as evidenced by stable catalase activity, an approximately 50% reduction in lipid peroxidation markers such as malondialdehyde (MDA), and a 35% decrease in reactive oxygen species (ROS), including hydrogen peroxide (H2O2). These findings demonstrate that B. spizizenii FMH45 holds significant potential for the development of effective biofertilizers capable of mitigating salt stress while boosting crop productivity. This approach offers a sustainable alternative to desalination-dependent hydroponics, particularly for arid and semi-arid regions, including Qatar. |
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| institution | Kabale University |
| issn | 2571-581X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Sustainable Food Systems |
| spelling | doaj-art-da67e6071f2b405dae57e77ebe907f752025-01-07T06:40:19ZengFrontiers Media S.A.Frontiers in Sustainable Food Systems2571-581X2025-01-01810.3389/fsufs.2024.15204441520444Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systemsFatma Masmoudi0Imen Saadaoui1Saoussen Ben Khedher2Saoussen Ben Khedher3Slim Tounsi4Biotechnology Program, Center for Sustainable Development, College of Art and Sciences, Qatar University, Doha, QatarBiotechnology Program, Center for Sustainable Development, College of Art and Sciences, Qatar University, Doha, QatarHigh Agronomic Institute of Chott Mariem, Sousse University, Sousse, TunisiaLaboratory of Biopesticides (LBPES), Center of Biotechnology of Sfax, University of Sfax, Sfax, TunisiaLaboratory of Biopesticides (LBPES), Center of Biotechnology of Sfax, University of Sfax, Sfax, TunisiaIntroductionHydroponic cultivation systems using desalinated groundwater may play pivotal role in reducing freshwater consumption for irrigation. However, reliance on desalination remains unsustainable due to its high cost, energy demand, and the serious environmental impacts of its brine byproducts. Producing a biofertilizer that enables groundwater irrigation in hydroponics by enhancing plant halotolerance and resistance to salt stress offers a promising solution to address freshwater scarcity and low soil quality in arid and semi-arid regions, such as the Arabian Gulf.MethodsThis study investigates the potential of Bacillus spizizenii FMH45 in field experiment to enhance tomato plant production under greenhouse cultivation in hydroponics using directly groundwater for irrigation without desalination.Results and discussionResults demonstrated that the FMH45-based biofertilizer (HB45) significantly improved plant physiological parameters under greenhouse conditions. These improvements included a notable increase in shoot elongation (>13%), enhanced SPAD index values (>8%), and significant rises in flower and fruit counts (≃ 11% and 22%, respectively). B. spizizenii HB45 showed significant potential to increase bacterial densities by over 100-fold in various plant organs under saline irrigation and prevent salt infiltration into internal plant tissues. Furthermore, HB45-treatment enhanced the plant oxidative stress response as evidenced by stable catalase activity, an approximately 50% reduction in lipid peroxidation markers such as malondialdehyde (MDA), and a 35% decrease in reactive oxygen species (ROS), including hydrogen peroxide (H2O2). These findings demonstrate that B. spizizenii FMH45 holds significant potential for the development of effective biofertilizers capable of mitigating salt stress while boosting crop productivity. This approach offers a sustainable alternative to desalination-dependent hydroponics, particularly for arid and semi-arid regions, including Qatar.https://www.frontiersin.org/articles/10.3389/fsufs.2024.1520444/fullBacillus spizizeniigroundwater irrigationhalobacteria-based biofertilizerhydroponic cultivation systemsalt stressoxidative stress |
| spellingShingle | Fatma Masmoudi Imen Saadaoui Saoussen Ben Khedher Saoussen Ben Khedher Slim Tounsi Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems Frontiers in Sustainable Food Systems Bacillus spizizenii groundwater irrigation halobacteria-based biofertilizer hydroponic cultivation system salt stress oxidative stress |
| title | Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems |
| title_full | Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems |
| title_fullStr | Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems |
| title_full_unstemmed | Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems |
| title_short | Bacillus Spizizenii FMH45-based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems |
| title_sort | bacillus spizizenii fmh45 based biofertilizer enhances growth and halotolerance of cherry tomato plants under hydroponic cultivation systems |
| topic | Bacillus spizizenii groundwater irrigation halobacteria-based biofertilizer hydroponic cultivation system salt stress oxidative stress |
| url | https://www.frontiersin.org/articles/10.3389/fsufs.2024.1520444/full |
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