Decoding Plant Metabolomic Response to Potassium and Nutrient Stresses in Controlled Environments

作者：Md. Mazadul Islam, Li Li, Jing He, Afroz Naznin, Samsul Huda, Talaat Ahmed, David T. Tissue, Zhong‐Hua Chen · 发表于：Physiologia Plantarum · 年份：2025 · DOI：10.1111/ppl.70547 · 被引用次数：12 · 研究领域：Plant nutrient uptake and metabolism、Plant Stress Responses and Tolerance、Plant Molecular Biology Research

Potassium (K) is an essential macronutrient, affecting numerous physiological, biochemical, and metabolic functions in plants. In protected cropping systems (PCS), which are controlled environments for intensive agriculture, optimizing K management is essential for attaining sustainable productivity and resilience under stressful growth conditions. Understanding plant responses to these conditions requires advanced analytical approaches, and metabolomics is emerging as a key tool, though there is still a lack of PCS-focused metabolomic studies. This review synthesizes the recent knowledge on plant metabolomic responses to K as a nutrient, emphasizing the central role of metabolomics in uncovering intricate biochemical pathways associated with K uptake, transport, and utilization. We investigate essential metabolic alterations in response to K deficiency, encompassing modifications in glucose metabolism, antioxidant synthesis, osmolyte accumulation, and hormonal regulation. The review also explores the relationships between potassium and other nutrients, specifically nitrogen, phosphorus, and essential micronutrients, and their impact on total plant metabolic networks. Furthermore, we discuss cutting-edge omics integration, precision fertigation, real-time sensor technologies, and machine learning applications that together promise to transform K fertilizer management in PCS. Future directions highlight the advancement of K-efficient cultivars, integrating metabolomic biomarke...