Photoinhibition Induced Alterations in the Photosynthetic Electron Transport Activities of the Wheat Primary Leaves

This article describes about the multiple effects of high light intensity on photosynthetic electron transport activities in wheat thylakoid membranes. High light (305–615 Wm⁻²) affects preferentially photosynthetic electron transport depending on the nature of applied intensity. Between two photosystems, photosystem II is more susceptible as compared to photosystem I. The possible reason for the inhibition in photosystem II catatalysed electron transport activity is the alteration of light harvesting complex of photosystem II as evidenced from the electron transport measurements at different illuminating conditions.