Biochemical changes associated with elevated carbon dioxide in rice (Oryza sativa L.)

The environmental change has tremendous effect in crop production in the form of increased stress all through the plant growth and development. Consequently the aim of the investigation was to assess the effect of elevated carbon dioxide under artificially induced carbon dioxide condition utilizing an open top chamber with rice genotype CO 51. Rice could provide less protein, nutrients and minerals fundamental for humans be in response to rising carbon dioxide concentrations that are involved in global warming. Increased concentrations of atmospheric carbon dioxide are anticipated to decrease the content of fundamental component, for example, protein in rice, threatening the nutrition of billions of people in the middle of the century. However, changes in plant-based nutrient substance in response to carbon dioxide have not been elucidated. The results from the present investigation revealed that the increased carbon dioxide have negative effects on soluble protein content (mg g-1) and nitrate reductase activity (µmol NO2 g-l hr-1) and positive effects on sucrose phosphate synthase (µ mol mg-1 protein min-1) and starch content (mg g-1) in different crop developing stages.