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Article

Cytokinin signaling and its inhibitor AHP6 regulate cell fate during vascular development.

Science (New York, N.Y.) - 6 Jan 2006

Mähönen Ari Pekka, Bishopp Anthony, Higuchi Masayuki, Nieminen Kaisa M, Kinoshita Kaori, Törmäkangas Kirsi, Ikeda Yoshihisa, Oka Atsuhiro, Kakimoto Tatsuo, Helariutta Ykä

Abstract excerpt

The cell lineages that form the transporting tissues (xylem and phloem) and the intervening pluripotent procambial tissue originate from stem cells near the root tip. We demonstrate that in Arabidopsis, cytokinin phytohormones negatively regulate protoxylem specification. AHP6, an inhibitory pseudophosphotransfer protein, counteracts cytokinin signaling, allowing protoxylem formation. Conversely, cytokinin...

Topics

Adenosine Triphosphate
Alleles
Arabidopsis
Arabidopsis Proteins
Benzyl Compounds
Cell Differentiation
Cell Division
Cell Lineage
Cloning, Molecular
Cytokinins

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

Genes, Plant

Kinetin

Meristem

Morphogenesis

Phenotype

Phosphorylation

Plant Growth Regulators

Plant Roots

Source

Identifiers

PMID: 16400151
DOI: 10.1126/science.1118875

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 31 Aug 2026.

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Cytokinin signaling and its inhibitor AHP6 regulate cell fate during vascular development.PMID 16400151Read ↗

The Arabidopsis eukaryotic translation initiation factor eIF5A-2 regulates root protoxylem development by modulating cytokinin signaling.Semantic proximity Read ↗

ALTERED MERISTEM PROGRAM1 suppresses ectopic stem cell niche formation in the shoot apical meristem in a largely cytokinin-independent manner.Semantic proximity Read ↗

APETALA1 establishes determinate floral meristem through regulating cytokinins homeostasis in Arabidopsis.Semantic proximity Read ↗

Cytokinin Targets Auxin Transport to Promote Shoot Branching.Semantic proximity Read ↗

Cytokinin regulates the activity of reproductive meristems, flower organ size, ovule formation, and thus seed yield in Arabidopsis thaliana.Semantic proximity Read ↗

Pattern of auxin and cytokinin responses for shoot meristem induction results from the regulation of cytokinin biosynthesis by AUXIN RESPONSE FACTOR3.Semantic proximity Read ↗

STIMPY mediates cytokinin signaling during shoot meristem establishment in Arabidopsis seedlings.Semantic proximity Read ↗

Arabidopsis histidine-containing phosphotransfer factor 4 (AHP4) negatively regulates secondary wall thickening of the anther endothecium during flowering.Semantic proximity Read ↗

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The role of cytokinin in ovule development in Arabidopsis.Semantic proximity Read ↗

WUSCHEL controls meristem function by direct regulation of cytokinin-inducible response regulators.Semantic proximity Read ↗

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