An Integrated Absorption–Transpiration and Pigment Energy Framework

Plant coloration is a visible manifestation of complex physiological, biochemical, and environmentalinteractions that regulate pigment synthesis, retention, and degradation. While the molecular pathwaysof chlorophylls, carotenoids, anthocyanins, and betalains are well established, existing models oftentreat pigment regulation independently from whole-plant resource uptake, transport dynamics, and lossprocesses. This study presents an integrative, dimensionally consistent framework for plant colorgeneration and stability by explicitly linking absorption dynamics, biomass balance, pigmentbiochemistry, and transpiration-driven loss processes.A phenomenological Absorption–Transpiration Balance (AE–TE) is introduced to capture the dynamicequilibrium between resource acquisition and loss, and its influence on pigment stability. Building onmass-flow principles and optical absorption theory, a refined plant color energy rate equation isformulated that integrates photosynthetically active radiation, physiological stress modifiers, pigment-specific absorption properties, and transport–loss balance.The framework is not intended as a predictive color model but as a biologically interpretable systems-level index that explains color fading and intensification under varying environmental conditions. Theformulation aligns with empirical observations from plant physiology, spectroscopy, and recentcomputational and imaging-based studies of plant color dynamics. This integrative approach provides arobust conceptual foundation for agricultural diagnostics, ecological assessment, and futureexperimental validation.... Please check the attachment for details