Synergistic effects of rhizobacteria and silicon nanoparticles in alleviating drought-induced stress via improved antioxidant and defense responses in plants
Planta, cilt.264, sa.3, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Derleme
- Cilt numarası: 264 Sayı: 3
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s00425-026-05099-4
- Dergi Adı: Planta
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Chemical Abstracts Core, EMBASE, Environment Index, MEDLINE, Natural Science Collection (ProQuest), Biological Science Database (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Health Research Premium Collection (ProQuest), Pharma Collection (ProQuest)
- Anahtar Kelimeler: Abiotic stress, Antioxidant enzymes, Nanobiotechnology, Plant physiology, Rhizobacteria
- Hatay Mustafa Kemal Üniversitesi Adresli: Evet
Özet
Main conclusion: The combined application of rhizobacteria and Si-NPs enhances plant tolerance to drought by improving antioxidant activity and defense-related responses. Abstract: Crop plants are often exposed to various environmental stresses during growth and development, especially under field conditions where environmental parameters are less controlled than in laboratory environments. Among these stresses, drought is one of the most detrimental, as it severely impairs photosynthesis, water and nutrient uptake, and overall crop productivity. The use of plant growth-promoting rhizobacteria (PGPR) offers a promising and sustainable approach to improving plant growth and resilience under drought stress. In addition, their combined application with silicon nanoparticles (Si-NPs) can further enhance these beneficial effects, leading to improved drought tolerance and crop performance. The combined application of PGPR and Si-NPs has been shown to function as an effective biotechnological strategy for improving drought tolerance in plants through multiple mechanisms, including root system modification, phytohormone regulation, osmotic adjustment, and activation of antioxidant defense systems. In addition, their ability to influence phytohormones signaling pathways contributes to improved stomatal regulation and overall plant resilience. This review summarizes the key mechanisms by which PGPR and Si-NPs enhance drought stress tolerance in crops, emphasizing their roles in improving root morphology, osmotic adjustment, photosynthetic efficiency, and antioxidant defense. Careful attention is given to the potential synergistic interaction between PGPR and Si-NPs, in which PGPR-mediated improvements in rhizosphere function, root growth, and hormonal regulation may complement Si-NP-mediated enhancement of water relations, membrane stability, photosynthetic protection, and antioxidant defense. A better understanding of these interactions can contribute to the development of more sustainable and resilient agricultural systems capable of mitigating drought-induced losses.