Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants
In temperate climates, low temperatures represent a significant stressor that adversely affects crop yield and production. Tomato (Solanum lycopersicum L.) is a subtropical crop cultivated in temperate regions. However, most tomato cultivars are sensitive to chilling temperatures, which limit their...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Plant Stress |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667064X24002409 |
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| author | Lucía Díaz-Narváez Kostadin E. Atanasov Ester Murillo Rubén Alcázar |
| author_facet | Lucía Díaz-Narváez Kostadin E. Atanasov Ester Murillo Rubén Alcázar |
| author_sort | Lucía Díaz-Narváez |
| collection | DOAJ |
| description | In temperate climates, low temperatures represent a significant stressor that adversely affects crop yield and production. Tomato (Solanum lycopersicum L.) is a subtropical crop cultivated in temperate regions. However, most tomato cultivars are sensitive to chilling temperatures, which limit their cultivation in colder regions. Some microorganism-based plant biostimulants have been reported to enhance abiotic stress tolerance in crops. In this study, we isolated two Pararhizobium sp. strains (44 and 128) and tested their potential to trigger chilling stress tolerance in tomato. Through transcriptional, metabolic and biochemical analyses we demonstrate that inoculation with strains 44 and 128 enhance chilling stress tolerance by stimulating the ICE1-CBF-COR cold stress signaling pathway at transcriptional level, improving reactive oxygen species (ROS) detoxifying capacity and boosting the biosynthesis of stress-protective metabolites, such as polyamines and reduced glutathione (GSH). Treatment of tomato plants with these strains under non-stress conditions also increased tomato fruit weight and quality attributes. These findings suggest that Pararhizobium strains 44 and 128 could be valuable biostimulants for improving chilling stress tolerance and crop yield. |
| format | Article |
| id | doaj-art-ee2999e2355c435b8baa7181f3ac02e9 |
| institution | DOAJ |
| issn | 2667-064X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Plant Stress |
| spelling | doaj-art-ee2999e2355c435b8baa7181f3ac02e92025-08-20T02:52:27ZengElsevierPlant Stress2667-064X2024-12-011410058710.1016/j.stress.2024.100587Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plantsLucía Díaz-Narváez0Kostadin E. Atanasov1Ester Murillo2Rubén Alcázar3Department of Biology, Healthcare and Environment, Section of Plant Physiology, Faculty of Pharmacy and Food Sciences, Universitat de Barcelona, Av Joan XXIII 27-31, Barcelona 08028, SpainDepartment of Biology, Healthcare and Environment, Section of Plant Physiology, Faculty of Pharmacy and Food Sciences, Universitat de Barcelona, Av Joan XXIII 27-31, Barcelona 08028, SpainDepartment of Biology, Healthcare and Environment, Section of Plant Physiology, Faculty of Pharmacy and Food Sciences, Universitat de Barcelona, Av Joan XXIII 27-31, Barcelona 08028, SpainCorresponding author.; Department of Biology, Healthcare and Environment, Section of Plant Physiology, Faculty of Pharmacy and Food Sciences, Universitat de Barcelona, Av Joan XXIII 27-31, Barcelona 08028, SpainIn temperate climates, low temperatures represent a significant stressor that adversely affects crop yield and production. Tomato (Solanum lycopersicum L.) is a subtropical crop cultivated in temperate regions. However, most tomato cultivars are sensitive to chilling temperatures, which limit their cultivation in colder regions. Some microorganism-based plant biostimulants have been reported to enhance abiotic stress tolerance in crops. In this study, we isolated two Pararhizobium sp. strains (44 and 128) and tested their potential to trigger chilling stress tolerance in tomato. Through transcriptional, metabolic and biochemical analyses we demonstrate that inoculation with strains 44 and 128 enhance chilling stress tolerance by stimulating the ICE1-CBF-COR cold stress signaling pathway at transcriptional level, improving reactive oxygen species (ROS) detoxifying capacity and boosting the biosynthesis of stress-protective metabolites, such as polyamines and reduced glutathione (GSH). Treatment of tomato plants with these strains under non-stress conditions also increased tomato fruit weight and quality attributes. These findings suggest that Pararhizobium strains 44 and 128 could be valuable biostimulants for improving chilling stress tolerance and crop yield.http://www.sciencedirect.com/science/article/pii/S2667064X24002409BiostimulantPolyaminesPararhizobiumCold stressPlant growth-promoting rhizobacteria |
| spellingShingle | Lucía Díaz-Narváez Kostadin E. Atanasov Ester Murillo Rubén Alcázar Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants Plant Stress Biostimulant Polyamines Pararhizobium Cold stress Plant growth-promoting rhizobacteria |
| title | Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants |
| title_full | Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants |
| title_fullStr | Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants |
| title_full_unstemmed | Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants |
| title_short | Pararhizobium sp. strains enhancing chilling stress tolerance and yield in tomato plants |
| title_sort | pararhizobium sp strains enhancing chilling stress tolerance and yield in tomato plants |
| topic | Biostimulant Polyamines Pararhizobium Cold stress Plant growth-promoting rhizobacteria |
| url | http://www.sciencedirect.com/science/article/pii/S2667064X24002409 |
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