Plant growth and development is under the control of mutual interactions among plant hormones.
The five classical categories of plant hormones include auxins, cytokinins, gibberellins, abscisic
acid and ethylene. Additionally, newer classes of plant hormones have been recognized like
brassinosteroids, jasmonic acid, salicylic acid and polyamines. These hormones play significant roles
in regulating the plant growth and development. Various receptors and key signaling components of
these hormones have been studied and identified. At genetic level, crosstalk among the various plant
hormones is found to be antagonistic or synergistic. In addition, components of signaling pathway of one plant hormone
interact with the signaling components of other hormone. Thus, an attempt has been made to review the literature regarding
the role of plant hormones in plant physiology and the common molecular players in their signaling and crosstalk.
Keywords: Crosstalk, physiological role, phytohormones, signaling, transcription factors.
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