title: Axis formation in Arabidopsis - transcription factors tell their side of the story.
abstract: Apical-to-basal auxin flux is a defining feature of land plants and determines their main body axis. How is the axis first set up in the embryo? Recent studies reveal that the establishment of embryonic polarity with the asymmetric first division as well as the separation of shoot and root fates within the proembryo depend on transcriptional regulation in the zygote and early embryo. Although the functional connections need to be better defined, this transcriptional network likely provides the positional information required for initiating the machinery capable of processing the systemic signal auxin in a context-dependent manner.
authors.affiliation: Department of Plant Biology, University of Georgia, 120 Carlton Street, Athens, GA 30602-7271, United States. sjeong@plantbio.uga.edu
authors.forename: Sangho
authors.initials: S
authors.lastname: Jeong
authors.forename: Matthew
authors.initials: M
authors.lastname: Volny
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Lukowitz
mesh_terms: D017360:Arabidopsis / Q000196:embryology* / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000378:metabolism*; D019521:Body Patterning; D008954:Models, Biological; D015398:Signal Transduction; D014157:Transcription Factors / Q000378:metabolism*
chemical_list: D029681:Arabidopsis Proteins; D014157:Transcription Factors
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