Journal ArticleDOI
Cytokinin Activation of Arabidopsis Cell Division Through a D-Type Cyclin
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TLDR
Results suggest that cytokinin activates Arabidopsis cell division through induction of CycD3 at the G1-S cell cycle phase transition.Abstract:
Cytokinins are plant hormones that regulate plant cell division. The D-type cyclin CycD3 was found to be elevated in a mutant of Arabidopsis with a high level of cytokinin and to be rapidly induced by cytokinin application in both cell cultures and whole plants. Constitutive expression of CycD3 in transgenic plants allowed induction and maintenance of cell division in the absence of exogenous cytokinin. Results suggest that cytokinin activates Arabidopsis cell division through induction of CycD3 at the G1-S cell cycle phase transition.read more
Citations
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Journal ArticleDOI
Salicylic acid beyond defence: its role in plant growth and development.
TL;DR: The evidence that supports the role of SA during plant growth and development is reviewed by comparing experiments performed by exogenous application of SA with analysis of genotypes affected by SA levels and/or perception.
Journal ArticleDOI
Cytokinin metabolism and action
David W. S. Mok,Machteld C. Mok +1 more
TL;DR: This review centers on cytokinin metabolism with connecting discussions on biosynthesis and signal transduction, and important findings are summarized with emphasis on metabolic enzymes and genes.
Journal ArticleDOI
Regulation of plant growth by cytokinin
TL;DR: It is suggested that cytokinins are an important regulatory factor of plant meristem activity and morphogenesis, with opposing roles in shoots and roots.
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Two-component circuitry in Arabidopsis cytokinin signal transduction
Ildoo Hwang,Jen Sheen +1 more
TL;DR: A eukaryotic two-component signalling circuit that initiates cytokinin signalling through distinct hybrid histidine protein kinase activities at the plasma membrane is identified.
Journal ArticleDOI
Coordination of carbon supply and plant growth
Alison M. Smith,Mark Stitt +1 more
TL;DR: Evidence is described for the existence of regulatory mechanisms that coordinate carbon supply and use, and the likely central role of sugar signalling is described, and both 'acute' and 'acclimatory' responses to alterations in carbon supply are proposed.
References
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Journal ArticleDOI
The CLAVATA1 gene encodes a putative receptor kinase that controls shoot and floral meristem size in Arabidopsis
TL;DR: It is provided evidence that CLV1 expression in the inflorescence is specifically associated with meristematic activity, suggesting a role in signal transduction.
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D-type cyclins
TL;DR: D-type cyclins couple extracellular signals to the biochemical machinery that governs progression through G1 phase of the mammalian cell division cycle, implying that their primary role is to sense the cell's readiness to replicate DNA and to enforce the commitment to enter S phase.
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Kinetin, a cell division factor from deoxyribonucleic acid1
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CKI1, a histidine kinase homolog implicated in cytokinin signal transduction
TL;DR: Results suggest that CKI1, which was tagged in four of the five mutants and induced typical cytokinin responses after introduction and overexpression in plants, encodes a protein similar to the two-component regulators.