Physiological role of brassinosteroids: an update
2010
Hayat, Shamsul | Mori, Masaki | Fariduddin, Qazi | Bajguz, Andrzej | Ahmad, Aqil
The entire range of the developmental processes in plants is largely regulated by the shift in the hormonal balance. Out of the recognized hormones, attention has largely been focused on auxins, gibberellins, cytokinin, abscisic acid and ethylene. Brassinosteroids (BRs) were initially assigned a position of a lesser importance than the above recognized plant growth regulators. At present BRs have evolved as essential regulators of growth and development. Much progress has been achieved in their isolation, characterization and possible mechanism of action. However, their practical applicability has lacked far behind. BRs are recognized as regulators of transcription and translation thereby changing the pattern of total proteins, enzymes, and the rate of photosynthesis and finally the seed yield, at harvest. In this review we have discussed the importance of BRs in regulating the enzyme level, enhancing photosynthetic rate and other related aspects, determining biological yield, under natural conditions.
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