...Danielle P. Vidaurre; Sara Ploense; Naden T. Krogan; Thomas Berleth AUXIN RESPONSE FACTOR (ARF)-mediated signaling conveys positional information during embryonic and postembryonic organogenesis and mutations in MONOPTEROS ( MP / ARF5 ) result in severe patterning defects during embryonic...

... forked2 mp axr6 pin1 Vascular patterning Leaf venation Auxin The spatial arrangement of the vascular bundles within plant leaves is crucial to plant function as it enables efficient transport of water, minerals and photosynthates and provides mechanical support to the leaf. Two major...

... postembryonic lineage in Manduca produces siblings of two types ( Witten and Truman,1991 ). These findings have not been incorporated into a more general model of neuronal lineages, however; possibly for two reasons. In contrast to other MPs, MPs4-6 were thought each to produce progeny of like type ( Goodman...

... this patterning process, we analyzed functions of two Arabidopsis genes, PIN-FORMED1 ( PIN1 ) and MONOPTEROS ( MP ), encoding a putative auxin efflux carrier and a transcription factor thought to mediate auxin signaling, respectively. The corresponding mutants show similar defects in apical patterning, including...

... veins along the leaf margin as well as additional secondary and primary veins. These features are very similar to those produced by inhibition of auxin transport by low concentrations of NPA, suggesting similar primary defects. (H) mp mutants have no veins along the leaf margin and fewer secondary...