Effect of Exclusion of Solar UV radiation on Plants

Abstract

UV exclusion studies can provide the realistic assessments of sensitivity of plant to current level of UV. Perusal of relevant literature reveals that UV exclusion causes enormous increase in the growth of aerial parts with below ground parts of the plants. Exclusion of UV enhanced the photosynthetic pigments, net photosynthetic rate and stomatal conductance along with remarkable increase in the activity of CA, Rubisco and PEPCase. UV excluded plants have higher PS II efficiency, reducing power, CO 2 fixation and decreased UV-B absorbing compounds, channeling the additional fixation of carbon to improvement of yield. UV exclusion studies indicate that UV sensitivity is greater in the dicots than in monocots.