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Cytokinin Signaling in Plant Development

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Review

Cytokinin Signaling in Plant Development

Joseph J Kieber et al. Development.

Abstract

The phytohormone cytokinin plays diverse roles in plant development, influencing many agriculturally important processes, including growth, nutrient responses and the response to biotic and abiotic stresses. Cytokinin levels in plants are regulated by biosynthesis and inactivation pathways. Cytokinins are perceived by membrane-localized histidine-kinase receptors and are transduced through a His-Asp phosphorelay to activate a family of transcription factors in the nucleus. Here, and in the accompanying poster, we summarize the current understanding of cytokinin metabolism, transport and signaling, and discuss how this phytohormone regulates changes in gene expression to mediate its pleiotropic effects.

Keywords: Cell signaling; Cytokinin; Plant hormones; Two-component signaling.

Conflict of interest statement

Competing interestsThe authors declare no competing or financial interests.

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