Signal Transduction of Brassinosteroids Under Abiotic Stresses

Plants live in regularly fluctuating surroundings that are critical for progression and enlargement. Divergent environmental circumstances comprise biotic and abiotic stress. The opposing things of abiotic indications are impaired by environmental variation, which has been forecast to outcome in an improved rate of dangerous climate. However, brassinosteroids (BRs), a unique polyhydroxy steroidal hormones in plants and capable for endogenous signals for the directive of plant growth and enlargement. It plays an imperative function in plant like seed sprouting, flowering and elongation of hypocotyl, etc. Moreover, BRs have capability to ameliorate the numerous abiotic difficulties like metal stress, temperature stress, water stress, oxidative damage, and salt injury. Furthermore, BR signaling is transduced by a receptor kinase-mediated signal transduction pathway, which is distinct from animal steroid signaling systems. Newest studies entirely associated with the signal pathway of BR have recognized numerous BR marker genes, associating with BR signaling to several cellular practices. This chapter summarizes the BR signaling system in wide detail and discusses how steroid hormone plays a key role in controlling plant growth, size, and metabolism.