... biosynthesis and transporter genes, created an imbalance in auxin signalling. Altered expression of microRNA165/166 ( miR165/166 ) and its targets, ROLLED1 and ROLLED2 ( RLD1/2 ), contributed to the changes in lbl1-rgd1 root growth and vascular patterning , as was evident by the altered root phenotype of Rld1...

..., auxin transport in epidermis is neither required nor sufficient for vein patterning; instead, auxin transport in inner tissues is both required and sufficient for vein patterning. Arabidopsis thaliana Leaf development Vascular patterning Auxin PIN genes Necessity and sufficiency...

... of the collagenous template and consequently of the mature bone. Indeed, some of the bone vessels were found to undergo mineralization. Moreover, the vascular pattern at each embryonic stage prefigured the mineral distribution pattern observed one day later. Finally, perturbation of vascular patterning...

...Romulo Hurtado; Rediet Zewdu; James Mtui; Cindy Liang; Robert Aho; Chad Kurylo; Licia Selleri; Doris Herzlinger The architecture of an organ's vascular bed subserves its physiological function and metabolic demands. However, the mechanisms underlying gross vascular patterning remain elusive. Using...

... in syndactyly, whereas an increment in vessel number and distribution resulted in elevation and expansion of PCD. Production of reactive oxygen species (ROS), toxic compounds that have been implicated in PCD, also depended on interdigital vascular patterning. Finally, ex vivo incubation of limbs in gradually...

... signal transduction to leaf vascular patterning at the molecular level. We thank Ben Nilsson for crosses; the Arabidopsis Biological Resource Center, Thomas Berleth, Robert Campbell, Taku Demura, David Galbraith, Jim Mattsson, Ben Scheres, Mathias Schuetz, Roger Tsien and Jian Xu for kindly...

... vasculature have been left understudied. Vascular patterning in the forming limb is tightly regulated in order to ensure sufficient gas exchange and nutrient supply to the developing organ. Once skeletogenesis is initiated,limb vasculature undergoes two seemingly opposing processes: vessel regression from...

... Vascular patterning Mouse Anomalies of the cardiac outflow tract (OFT) are among the most common congenital malformations in humans. They account for 20-30% of congenital heart anomalies ( Sandler,2004 ), which occur in at least 1% of live births and lead to significant morbidity and mortality...

... of mesophyll. * Author for correspondence (e-mail: berleth@botany.utoronto.ca ) 18 3 2004 © 2004. 2004 Arabidopsis thaliana Procambium Leaf development Vascular patterning The vascular system of plants is composed of a continuous network of vascular bundles ( Esau, 1965...

... 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...

... class of mutants termed dov ( d ifferential development o f v ascular-associated cells). The dov1 mutant clearly demonstrates a cell-specific difference in chloroplast development. Mutant leaves are highly reticulate with a green vascular pattern. The underlying bundle sheath cells always contain normal...

...Francine M. Carland; Neil A. McHale ABSTRACT We have taken a genetic approach to understanding the mechanisms that control vascular patterning in the leaves of higher plants. Here we present the identification and characterization of the lop1 mutant of Arabidopsis which is defective in basipetal...