Salicylic Acid and Proline-Functionalized Carbon Quantum Dots Mitigate Nickel Toxicity in Wheat by Enhancing Antioxidant Defense, Metal Homeostasis, and Nutritional Quality - Syed Abu Bakr Haider Bukhari; Minhas Elahi; Muhammad Anas; Shoaib Abbas; Waseem Ahmed Khattak; Umar Masood Quraishi (Journal of Plant Growth Regulation, 2026)