Exogenous Sodium Nitroprusside Enhances Drought Resistance in Wheat Seedlings by Regulating Proline Synthesis via the Arginine Pathway - Ruqing Li; Sixu Jin; Menghan Zhang; Anran Wei; Ruili Xue; Shuhan Cheng; Wenjing Bu; Haifang Jiang; Xueli Qi; Yuexia Wang (Journal of Plant Growth Regulation, 2026)