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Transcriptional control of tissue formation throughout root development.

ABSTRACT: Tissue patterns are dynamically maintained. Continuous formation of plant tissues during postembryonic growth requires asymmetric divisions and the specification of cell lineages. We show that the BIRDs and SCARECROW regulate lineage identity, positional signals, patterning, and formative divisions throughout Arabidopsis root growth. These transcription factors are postembryonic determinants of the ground tissue stem cells and their lineage. Upon further activation by the positional signal SHORT-ROOT (a mobile transcription factor), they direct asymmetric cell divisions and patterning of cell types. The BIRDs and SCARECROW with SHORT-ROOT organize tissue patterns at all formative steps during growth, ensuring developmental plasticity.

SUBMITTER: Moreno-Risueno MA

PROVIDER: S-EPMC4855878 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature

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Transcriptional control of tissue formation throughout root development.

Moreno-Risueno Miguel A MA Sozzani Rosangela R Yardımcı Galip Gürkan GG Petricka Jalean J JJ Vernoux Teva T Blilou Ikram I Alonso Jose J Winter Cara M CM Ohler Uwe U Scheres Ben B Benfey Philip N PN

Science (New York, N.Y.) 20151001 6259

Tissue patterns are dynamically maintained. Continuous formation of plant tissues during postembryonic growth requires asymmetric divisions and the specification of cell lineages. We show that the BIRDs and SCARECROW regulate lineage identity, positional signals, patterning, and formative divisions throughout Arabidopsis root growth. These transcription factors are postembryonic determinants of the ground tissue stem cells and their lineage. Upon further activation by the positional signal SHORT ...[more]

PMID: 26494755

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