Fulvic acid‐releasing chitosan nanoparticles promote the growth and salt stress tolerance of soybean plants

• DOI: 10.1111/ppl.70254
• Publication Date: 2025-05-06T04:34:33Z
• Authors: Vu Ngoc Huy; Nusrat Jahan Methela; Tiba Nazar Ibrahi...; Murtaza Khan; Mwondha Faluku; Alexander Brown; Da‐Sol Lee; Ashim Kumar Das; Rabia Amir; Liny Lay; Bong‐Gyu Mun; Yoohna Kim; Adil Hussian; Byung‐Wook Yun
• Keywords: APX

Abstract Nanotechnology offers several advantages over conventional inputs, with widespread application in agriculture. The current climate change crisis has accelerated the accumulation of salts soils, which is a major challenge to global food security. Here, we synthesized fulvic acid‐releasing chitosan nanoparticles (Ch‐FANPs) for promoting soybean growth and salt stress tolerance. In screening hydroponic experiment, 0.1 mM Ch‐FANPs promoted plant enhanced parameters pot‐grown plants significantly modulated stomatal movement under control as well conditions induced by 150 NaCl. Salt affected overall reduced chlorophyll content. However, treated not only accumulated higher both but also above‐ below‐ground more than 50%. Interestingly, Ch‐FANP‐treated salt‐exposed ~30% less soluble proteins untreated salt‐stressed plants. Ch‐FANPs‐mediated protection against was related activation antioxidant machinery highest ascorbate peroxidase (APX) activity recorded Ch‐FANPs‐treated along low MDA H 2 O contents. ICP‐MS analysis showed tremendously Na + ions (~35 ppm) leaves compared 19 ppm when Ch‐FANPs. Salt‐exposed had K content (~76 Ca 2+ (62 ppm). Furthermore, associated significant increase expression marker genes GmSOS1, GmSOS2, GmNHX1, GmP5CS1 .