Vascular Patterning
نویسندگان
چکیده
منابع مشابه
Vascular Patterning: Xylem or Phloem?
Xylem and phloem are the major conduits for the transport of water and solutes through the plant. Recent work has helped to elucidate the mechanisms that determine the identity and arrangement of these two tissues.
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The plant hormone auxin has long been known to play a pivotal role in vascular patterning and differentiation. But auxin is not the whole story: recent genetic analyses have identified additional factors required for vascular patterning, one of them involving sterols.
متن کاملGrowth factor gradients in vascular patterning.
Growth factor gradients regulate many developmental processes. VEGF-A is distributed in a graded fashion in growing tissues in order to direct sprouting of new vessels. Growth factor gradients can be formed by regulated production, retention, controlled release and degradation. VEGF-A production is controlled by hypoxia while its retention depends on the C-terminal heparin-binding motifs presen...
متن کاملNeuropilin ligands in vascular and neuronal patterning.
Blood vessels and neurons share guidance cues and cell-surface receptors to control their behaviour during embryogenesis. The transmembrane protein NRP1 (neuropilin 1) is present on both blood vessels and nerves and binds two structurally diverse ligands, the class 3 semaphorin SEMA3A and an isoform of the vascular endothelial growth factor VEGF-A termed VEGF(165) (VEGF(164) in mice). In vitro,...
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Endothelial cells (ECs) form extensive, highly branched and hierarchically organized tubular networks in vertebrates to ensure the proper distribution of molecular and cellular cargo in the vertebrate body. The growth of this vascular system during development, tissue repair or in disease conditions involves the sprouting, migration and proliferation of endothelial cells in a process termed ang...
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ژورنال
عنوان ژورنال: The Arabidopsis Book
سال: 2003
ISSN: 1543-8120,1543-8120
DOI: 10.1199/tab.0073