Vol. 6, Issue 5 (2018)
In built biochemical components responsible for biotic and abiotic stress in crop plants
Author(s): M Chitra and M Pandiyan
Abstract: Stress is a major environmental factor that limits plant growth, metabolism, and productivity. Plant growth and development involve numerous biochemical reactions that are related to stress. Drought, salt, and temperature stresses are major environmental factors that affect the geographical distribution of plants in nature, limit plant productivity in agriculture, and threaten food security. Glycoproteins, phenolics, phenolic glycosides, unsaturated lactones, saponins, cyanogenic glycosides, glucosinolates, 5-alkylated resorcinols, carotenoids and dienes are defenses plants to pathogens. Calcium and ROS waves have been shown to cause transcriptional responses in plant tissues. Catalase (CAT), ascorbate peroxidase (APX) and superoxide dismutase (SOD) showed an initial increase before declining at 50°C,while peroxidase (POX) and glutathione reductase (GR) activities declined at all temperatures ranging from 20 to 50°C. Pectins appear to be a key element of the plant response to cold stress, as shown by a number of studies on various species. In addition, major tolerance mechanisms are ion transporters, proteins, osmoprotectants, antioxidants, and other factors are activated to offset stress-induced biochemical and physiological alterations. This article reviews biochemical components in built responses seen in plants to biotic and abiotic stress in plants at the cellular organelles and whole plant levels.
Pages: 3099-3107 | 434 Views 86 Downloads
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How to cite this article:
M Chitra, M Pandiyan. In built biochemical components responsible for biotic and abiotic stress in crop plants. Int J Chem Stud 2018;6(5):3099-3107.
