Brassinosteroids and their role in response of plants to abiotic stresses: A review
2014
Fariduddin, Q., Aligarh Muslim University, Aligarh (India). Dept. of Botany | Yusuf, M., Aligarh Muslim University, Aligarh (India). Dept. of Botany | Ahmad, I., Aligarh Muslim University, Aligarh (India). Dept. of Agricultural Microbiology | Ahmad, A., Aligarh Muslim University, Aligarh (India). Dept. of Botany
Brassinosteroids (BRs) are polyhydroxylated steroidal plant hormones that play pivotal role in the regulation of various plant growth and development processes. BR biosynthetic or signaling mutants clearly indicate that these plant steroids are essential for regulating a variety of physiological processes including cellular expansion and proliferation, vascular differentiation, male fertility, timing senescence, and leaf development. Moreover, BRs regulate the expression of hundreds of genes, affect the activity of numerous metabolic pathways, and help to control overall developmental programs leading to morphogenesis. On the other hand, the potential application of BRs in agriculture to improve growth and yield under various stress conditions including drought, salinity, extreme temperatures, and heavy metal (Cd, Cu, Al, and Ni) toxicity, is of immense significance as these stresses severely hamper the normal metabolism of plants. Keeping in mind the multifaceted role of BRs, an attempt has been made to cover the various aspects mediated by BRs particularly under stress conditions and a possible mechanism of action of BRs has also been suggested.
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