Modulation of Phospholipid Signaling by GLABRA2 in Root-Hair Pattern Formation
Copyright policy )Modulation of Phospholipid Signaling by GLABRA2 in Root-Hair Pattern Formation
The root-hair pattern of Arabidopsis is determined through a regulatory circuit composed of transcription factor genes. The homeobox gene GLABRA2 ( GL2 ) has been considered a key component, acting farthest downstream in this regulation. GL2 modified to include a transactivating function caused epidermal cells to develop ectopic root hairs or root hair–like structures. With this system, the phospholipase Dζ1 gene ( AtPLD ζ 1 ) was identified as a direct target of GL2. Inducible expression of AtPLD ζ 1 promoted ectopic root-hair initiation. We conclude that GL2 exerts its regulatory effect on root-hair development through modulation of phospholipid signaling.
Homeodomain Proteins, GLABRA2, Arabidopsis Proteins, Arabidopsis, PLD signaling, Genes, Plant, Plants, Genetically Modified, Plant Roots, Dexamethasone, root hairs, Plant Epidermis, cell differentiation, Gene Expression Regulation, Plant, Morphogenesis, Phospholipase D, Promoter Regions, Genetic, Phospholipids, Signal Transduction
Homeodomain Proteins, GLABRA2, Arabidopsis Proteins, Arabidopsis, PLD signaling, Genes, Plant, Plants, Genetically Modified, Plant Roots, Dexamethasone, root hairs, Plant Epidermis, cell differentiation, Gene Expression Regulation, Plant, Morphogenesis, Phospholipase D, Promoter Regions, Genetic, Phospholipids, Signal Transduction
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