Crosstalk of brassinosteroids with other phytohormones under various abiotic stresses

Abstract

Brassinosteroids (BRs) are the most important growth hormones which are steroidal in nature play crucially involved in growth and progressions of the plant. In recent years, advancements done in accessibility of biological possessions and approaches led to the most applicable mechanisms involved in BRs de novo synthesis, translocation and signaling pathways. The current researchers are also associated with the flexible roles of BRs. From the previous studies, it was manifest that BRs interaction with salicylic acid, abscisic acid, auxin, gibberellin, ethylene, cytokinin, and jasmonic acid in controlling numerous morphophysiological processes in plants. In this section, an effort is made to understand mysterious development and growth-linked either directly or not directly to BRs signaling and its intra-and interrelations with various phytohormones. This, in sequence, will support emerging extrapolative representations to moderate various valuable qualities in plants and address current encounters in agriculture.

Application of 2,4-Epibrassinolide Improves Drought Tolerance in Tobacco through Physiological and Biochemical Mechanisms

“…The Arabidopsis BR deficient mutant ( det2-1 ) showed defects in hypocotyl elongation, similar to the response of auxin mutants to temperature stress, which highlights a possible functional interaction between BR and IAA for temperature-induced hypocotyl elongation [ 79 ]. Some studies established a connection (crosstalk) between BR and IAA related to their involvement in plant growth and developmental processes; however, further investigations have found that crosstalk is related to abiotic stress tolerance [ 80 , 81 ]. Therefore, in this study, the authors concluded that BR and IAA crosstalk could help improve drought tolerance.…”

ROS-hormone interaction in regulating integrative d閒ense signaling of plant cell

“…Reactive oxygen species-Brassinosteroid (BR) interaction in plant cell under stress BR triggers many stress signaling pathways with the help of Ca 2+ and ROS as a second messenger (Allen et al, 2000). In response to stress, BR can regulate the ROS titer by modulating ROS generation as well as the ROS scavenging mechanism, thus changing the redox status of the cell for precise regulation of redox signaling for stress adaptations (Jakubowska and Janicka, 2017;Ahmad et al, 2018). BR induces NADPHoxidase-mediated ROS generation in the apoplast, and silencing of RBOH1 reduces BR-mediated ROS production (Nie et al, 2013).…”