Arabidopsis thaliana homeodomain-leucine zipper type I transcription factors contribute to control leaf venation patterning. (4th March 2018)

• Record Type: Journal Article
• Authors: Moreno, Javier E.; Romani, Facundo; Chan, Raquel L.
• Is Part Of: Plant signaling & behavior. Volume 13:Number 3(2018)
• Publication Date: 2018-03-04
• Subjects: Auxin influx carriers -- AUX/LAX -- HD-Zip I -- venation symmetry -- patterning -- hierarchy; Plant ecophysiology -- Periodicals; Plant cellular signal transduction -- Periodicals; Plant cellular signal transduction; Plant ecophysiology; Periodicals; Electronic journals; 581
• DOI: 10.1080/15592324.2018.1448334
• Languages: English
• ISSNs: 1559-2316

Abstract

ABSTRACT: Venation patterning is a taxonomic attribute for classification of plants and it also plays a role in the interaction of plants with the environment. Despite its importance, the molecular physiology controlling this aspect of plant development is still poorly understood. Auxin plays a central role modulating the final vein network and patterning. This addendum discusses recent findings on the role of homeodomain-leucine zipper (HD-Zip) transcription factors on the regulation of leaf venation patterning. Moreno-Piovano et al . reported that ectopic expression of a sunflower HD-Zip I gene, HaHB4, increased the asymmetry of leaf venation. Even more, this work showed that auxin transport in the leaf through LAX carriers controls venation patterning. Here, we provide evidence indicating that some Arabidopsis thaliana HD-Zip I genes play a role in the determination of the final leaf venation patterning. We propose that these genes contribute to regulate vein patterning, likely controlling auxin homeostasis.