Heat Stress: An Overview

Abstract

Heat stress is a major abiotic stress that slower down plant growth and development worldwide. Plant growth involves various metabolic reactions that are very sensitive to heat stress. Heat stress is now a major concern for world food production. Heat stress causes an array of physiological, morphological, biochemical and molecular changes in the plant which ultimately reduces the plant growth and ultimately grain yield. Plants exposed to high temperature adversely affects membrane component, water relation, respiration, photosynthesis and also affects the hormones level in plants. Heat stress enhances the expression of many heat stress associated proteins and production of reactive oxygen species.Plant Respond to such adverse effect through various ways which are interconnected which include the production of antioxidant enzymes, transcription factors, heat shock proteins etc. Though the biochemical and molecular level of information is quite known therefore further study should be focused onnutrient partitioning and morphological adaption