Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress
Salinity is one of the most devastating abiotic stresses hampering the growth and production of rice. Nine indole-3-acetic acid (IAA)-producing salt-tolerant plant-growth-promoting rhizobacteria (ST-PGPR) were inoculated into Thai jasmine rice (<i>Oryza sativa</i> L.) variety Khao Dawk M...
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MDPI AG
2023-09-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/19/3441 |
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| author | Kawiporn Chinachanta Arawan Shutsrirung Choochad Santasup Wasu Pathom-Aree Doan Trung Luu Laetitia Herrmann Didier Lesueur Chanakan Prom-u-thai |
| author_facet | Kawiporn Chinachanta Arawan Shutsrirung Choochad Santasup Wasu Pathom-Aree Doan Trung Luu Laetitia Herrmann Didier Lesueur Chanakan Prom-u-thai |
| author_sort | Kawiporn Chinachanta |
| collection | DOAJ |
| description | Salinity is one of the most devastating abiotic stresses hampering the growth and production of rice. Nine indole-3-acetic acid (IAA)-producing salt-tolerant plant-growth-promoting rhizobacteria (ST-PGPR) were inoculated into Thai jasmine rice (<i>Oryza sativa</i> L.) variety Khao Dawk Mali 105 (KDML105) seedlings grown under different concentrations of NaCl (0, 50, 100, and 150 mM). The ST-PGPR strains significantly promoted the growth parameters, chlorophyll content, nutrient uptake (N, P, K, Ca, and Mg), antioxidant activity, and proline accumulation in the seedlings under both normal and saline conditions compared to the respective controls. The K<sup>+</sup>/Na<sup>+</sup> ratio of the inoculated seedlings was much higher than that of the controls, indicating greater salt tolerance. The most salt-tolerant and IAA-producing strain, <i>Sinomonas</i> sp. ORF15-23, yielded the highest values for all the parameters, particularly at 50 mM NaCl. The percentage increases in these parameters relative to the controls ranged from >90% to 306%. Therefore, <i>Sinomonas</i> sp. ORF15-23 was considered a promising ST-PGPR to be developed as a bioinoculant for enhancing the growth, salt tolerance, and aroma of KDML105 rice in salt-affected areas. Environmentally friendly technologies such as ST-PGPR bioinoculants could also support the sustainability of KDML105 geographical indication (GI) products. However, the efficiency of <i>Sinomonas</i> sp. ORF15-23 should be evaluated under field conditions for its effect on rice nutrient uptake and growth, including the 2AP level. |
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| language | English |
| last_indexed | 2024-03-10T21:37:59Z |
| publishDate | 2023-09-01 |
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| series | Plants |
| spelling | doaj.art-aab73a50714f4e93a490c03e311ea79d2023-11-19T14:54:27ZengMDPI AGPlants2223-77472023-09-011219344110.3390/plants12193441Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt StressKawiporn Chinachanta0Arawan Shutsrirung1Choochad Santasup2Wasu Pathom-Aree3Doan Trung Luu4Laetitia Herrmann5Didier Lesueur6Chanakan Prom-u-thai7Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, ThailandDepartment of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, ThailandDepartment of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, ThailandCenter of Excellent in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, ThailandIPSiM, CNRS, INRAE, Institute Agro, University of Montpellier, 34060 Montpellier, FranceAlliance of Bioversity International and Centre International of Tropical Agriculture (CIAT), Asia Hub, Common Microbial Biotechnology Platform (CMBP), Hanoi 10000, VietnamAlliance of Bioversity International and Centre International of Tropical Agriculture (CIAT), Asia Hub, Common Microbial Biotechnology Platform (CMBP), Hanoi 10000, VietnamDepartment of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, ThailandSalinity is one of the most devastating abiotic stresses hampering the growth and production of rice. Nine indole-3-acetic acid (IAA)-producing salt-tolerant plant-growth-promoting rhizobacteria (ST-PGPR) were inoculated into Thai jasmine rice (<i>Oryza sativa</i> L.) variety Khao Dawk Mali 105 (KDML105) seedlings grown under different concentrations of NaCl (0, 50, 100, and 150 mM). The ST-PGPR strains significantly promoted the growth parameters, chlorophyll content, nutrient uptake (N, P, K, Ca, and Mg), antioxidant activity, and proline accumulation in the seedlings under both normal and saline conditions compared to the respective controls. The K<sup>+</sup>/Na<sup>+</sup> ratio of the inoculated seedlings was much higher than that of the controls, indicating greater salt tolerance. The most salt-tolerant and IAA-producing strain, <i>Sinomonas</i> sp. ORF15-23, yielded the highest values for all the parameters, particularly at 50 mM NaCl. The percentage increases in these parameters relative to the controls ranged from >90% to 306%. Therefore, <i>Sinomonas</i> sp. ORF15-23 was considered a promising ST-PGPR to be developed as a bioinoculant for enhancing the growth, salt tolerance, and aroma of KDML105 rice in salt-affected areas. Environmentally friendly technologies such as ST-PGPR bioinoculants could also support the sustainability of KDML105 geographical indication (GI) products. However, the efficiency of <i>Sinomonas</i> sp. ORF15-23 should be evaluated under field conditions for its effect on rice nutrient uptake and growth, including the 2AP level.https://www.mdpi.com/2223-7747/12/19/3441aromatic riceclimate-resilient agricultureplant-growth-promoting actinomycetessalinity stress mitigationsalt stress alleviationsalt-tolerant rhizobacteria |
| spellingShingle | Kawiporn Chinachanta Arawan Shutsrirung Choochad Santasup Wasu Pathom-Aree Doan Trung Luu Laetitia Herrmann Didier Lesueur Chanakan Prom-u-thai Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress Plants aromatic rice climate-resilient agriculture plant-growth-promoting actinomycetes salinity stress mitigation salt stress alleviation salt-tolerant rhizobacteria |
| title | Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress |
| title_full | Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress |
| title_fullStr | Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress |
| title_full_unstemmed | Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress |
| title_short | Rhizoactinobacteria Enhance Growth and Antioxidant Activity in Thai Jasmine Rice (<i>Oryza sativa</i>) KDML105 Seedlings under Salt Stress |
| title_sort | rhizoactinobacteria enhance growth and antioxidant activity in thai jasmine rice i oryza sativa i kdml105 seedlings under salt stress |
| topic | aromatic rice climate-resilient agriculture plant-growth-promoting actinomycetes salinity stress mitigation salt stress alleviation salt-tolerant rhizobacteria |
| url | https://www.mdpi.com/2223-7747/12/19/3441 |
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