Role of Secondary Metabolites in Drought Tolerance in Crops
Eashan Mukherjee*
Dept. of Genetics and Plant Breeding, College of Agriculture, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana (125 004), India
Karuna
Dept. of Genetics and Plant Breeding, College of Agriculture, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana (125 004), India
Navreet Kaur Rai
Dept. of Genetics and Plant Breeding, College of Agriculture, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana (125 004), India
DOI: NIL
Keywords: Crop productivity, Drought stress, Metabolic shift, Secondary metabolites
Abstract
Crops plants are subjected to a wide range of abiotic stresses in the form of heat, drought, soil salinity, acidity and water moisture stresses out of which drought stress severely affects crop productivity leading to significant yield loss. Exposure to drought stress triggers a cascade of cell signaling reactions in the plants affecting homeostasis and thereby leading to the production of an array of stress induced secondary metabolites. Intracellularly upregulated biosynthesis, osmotic regulations, metabolic shifts culminating to downstream oxidative stress scavenging are observed. Consequent morpho-physiological manifestations in form of stomatal guard cell regulations, deeper root growth, extracellular cuticle development take place. Hence the present article discusses the role of secondary phyto-chemicals and the underlying genetic factors involved in combating impact of drought stress on crops.
Downloads
not found
Reference
Davies, K.M., Albert, N.W., Zhou, Y., Schwinn, K.E., 2018. Functions of flavonoid and betalain pigments in abiotic stress tolerance in plants. Annual Plant Reviews Online 1(1), 21-62. DOI: https://doi.org/10.1002/9781119312994.apr0604.
Lee, D.K., Yoon, S., Kim, Y.S., Kim, J.K., 2017. Rice OsERF71-mediated root modification affects shoot drought tolerance. Plant Signaling & Behaviour 12, e1268311.
Wang, A., Zhu, M., Luo, Y., Liu, Y., Li, R., Kou, M., Wang, X., Zhang, Y., Meng, X., Zheng, Y., 2017. A sweet potato cinnamate 4-hydroxylase gene, IbC4H, increases phenolics content and enhances drought tolerance in tobacco. Acta Physiologiae Plantarum 39, 1-12.
Yadav, B., Jogawat, A., Rahman, M.S., Narayan, O.P., 2021. Secondary metabolites in the drought stress tolerance of crop plants: A review. Gene Reports 23, 101040.