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Enhancing salinity tolerance in rice using Saccharomyces cerevisiae inoculation: physiological and yield responses across diverse genotypes

Author

Listed:
  • Heba A. ElSherbiny

    (Rice Research Department, Field Crops Research Institute, Agricultural Research Centre, Kafr-Elsheikh, Egypt)

  • Alaa El-Dein Omara

    (Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, P.R. China
    Soil Microbiology Research Department, Soils, Water, and Environment Research Institute (SWERI), Agriculture Research Centre (ARC), Giza, Egypt)

  • Elsayed E. Gewaily

    (Rice Research Department, Field Crops Research Institute, Agricultural Research Centre, Kafr-Elsheikh, Egypt)

  • Walid F. Ghidan

    (Rice Research Department, Field Crops Research Institute, Agricultural Research Centre, Kafr-Elsheikh, Egypt)

  • Mahmoud E. Selim

    (Rice Research Department, Field Crops Research Institute, Agricultural Research Centre, Kafr-Elsheikh, Egypt)

  • Amany M. Badr

    (Rice Research Department, Field Crops Research Institute, Agricultural Research Centre, Kafr-Elsheikh, Egypt)

  • Dalal S. Alshaya

    (Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia)

  • Khadiga Alharbi

    (Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia)

  • Maha Aljabri

    (Department of Biology, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia)

  • Ahmed A.A. Leilah

    (Agronomy Department, Faculty of Agriculture, Mansoura University, Mansoura, Egypt)

Abstract

Salinity stress is a major environmental constraint limiting crop productivity worldwide. The application of beneficial microorganisms is an effective strategy to improve plant tolerance to abiotic stresses. This study evaluated the role of Saccharomyces cerevisiae inoculation in enhancing physiological performance, oxidative stress tolerance, and yield of rice genotypes under saline-water irrigation. A lysimeter experiment was conducted during the 2024 and 2025 seasons. Five rice genotypes were exposed to saline water (6 000 ppm) with and without inoculation. Gas exchange, water status, oxidative stress markers, antioxidant enzyme activities, and yield-related traits were assessed. The results showed that inoculation significantly enhanced CO2 assimilation (12.27%), stomatal conductance (15.71%), transpiration rate (8.78%), and relative water content (16.36%) across both seasons. Furthermore, inoculation significantly reduced malondialdehyde (MDA) by 19.75% and hydrogen peroxide (H2O2) by 23.72%. While superoxide dismutase activity (SOD) increased by 35.32% and catalase activity (CAT) by 20.63%. Grain yield per plant improved by 18.91% and biological yield by 12.84%, accompanied by a reduction in grain sterility (14.47%). The assessed genotypes exhibited significant variation across all parameters studied. IRRI-165 and Giza-179 exhibited superior performance and responsiveness. Giza-182 and Sakha-104 displayed intermediate levels, while Giza-177 was the most sensitive genotype. Multivariate analyses confirmed strong positive associations between inoculation and genotypic performance. Whereas genotypic performance was negatively associated with oxidative stress markers. These results suggest that S. cerevisiae inoculation improves rice performance under salinity stress. The enhancement may contribute to the integration of physiological and biochemical mechanisms. Therefore, combining microbial inoculation with tolerant genotypes provides a sustainable strategy to improve rice productivity in salt-affected environments.

Suggested Citation

  • Heba A. ElSherbiny & Alaa El-Dein Omara & Elsayed E. Gewaily & Walid F. Ghidan & Mahmoud E. Selim & Amany M. Badr & Dalal S. Alshaya & Khadiga Alharbi & Maha Aljabri & Ahmed A.A. Leilah, 2026. "Enhancing salinity tolerance in rice using Saccharomyces cerevisiae inoculation: physiological and yield responses across diverse genotypes," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 72(6), pages 362-379.
    • Handle: RePEc:caa:jnlpse:v:72:y:2026:i:6:id:178-2026-pse
    DOI: 10.17221/178/2026-PSE
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    References listed on IDEAS

    as
    1. Snezhana Mourouzidou & Georgios K. Ntinas & Aphrodite Tsaballa & Nikolaos Monokrousos, 2023. "Introducing the Power of Plant Growth Promoting Microorganisms in Soilless Systems: A Promising Alternative for Sustainable Agriculture," Sustainability, MDPI, vol. 15(7), pages 1-19, March.
    2. Heba A. ElSherbiny & Mahrous E. Negm & Hassan Sh. Hamad & Elsayed A. Abo-Marzoka & Dalia E. El-Sharnobi & Nessreen N. Bassuony & Neama K. ElKholy & Fatmah A. Safhi & Dalal S. Alshaya & Nora M. Al Abou, 2026. "Dissecting genetic variability and character associations of physiological, biochemical, agronomic, and yield traits in rice genotypes under salinity stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 72(2), pages 102-121.
    3. Balaji Doolam & Bishwambhar Mishra & Divyamshu Surabhi & Sanjeeb Kumar Mandal & Spoorthi Sada & Naru Rakesh Reddy & Jibanjyoti Panda & Sarvesh Rustagi & Awdhesh Kumar Mishra & Yugal Kishore Mohanta, 2025. "Correction: A systematic review of potential bioactive compounds from Saccharomyces cerevisiae: exploring their applications in health promotion and food development," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 27(2), pages 2983-2984, February.
    4. Balaji Doolam & Bishwambhar Mishra & Divyamshu Surabhi & Sanjeeb Kumar Mandal & Spoorthi Sada & Naru Rakesh Reddy & Jibanjyoti Panda & Sarvesh Rustagi & Awdhesh Kumar Mishra & Yugal Kishore Mohanta, 2025. "A systematic review of potential bioactive compounds from Saccharomyces cerevisiae: exploring their applications in health promotion and food development," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 27(2), pages 2945-2982, February.
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