V
Viola Willemsen
Researcher at Wageningen University and Research Centre
Publications - 34
Citations - 7673
Viola Willemsen is an academic researcher from Wageningen University and Research Centre. The author has contributed to research in topics: Arabidopsis & Meristem. The author has an hindex of 21, co-authored 30 publications receiving 6972 citations. Previous affiliations of Viola Willemsen include Utrecht University.
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Journal ArticleDOI
The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots
Ikram Blilou,Jian Xu,Marjolein Wildwater,Viola Willemsen,Ivan A. Paponov,Jiří Friml,Renze Heidstra,Mitsuhiro Aida,Klaus Palme,Ben Scheres +9 more
TL;DR: This work shows that five PIN genes collectively control auxin distribution to regulate cell division and cell expansion in the primary root and reveals an interaction network of auxin transport facilitators and root fate determinants that control patterning and growth of the root primordium.
Journal ArticleDOI
The PLETHORA Genes Mediate Patterning of the Arabidopsis Root Stem Cell Niche
Mitsuhiro Aida,Dimitris Beis,Renze Heidstra,Viola Willemsen,Ikram Blilou,Carla Galinha,Laurent Nussaume,Yoo-Sun Noh,Richard M. Amasino,Ben Scheres +9 more
TL;DR: The PLETHORA1 (PLT1) and PLT2 genes encoding AP2 class putative transcription factors, which are essential for QC specification and stem cell activity, are identified.
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PLETHORA proteins as dose-dependent master regulators of Arabidopsis root development
Carla Galinha,Hugo Hofhuis,Marijn Luijten,Viola Willemsen,Ikram Blilou,Renze Heidstra,Ben Scheres +6 more
TL;DR: These findings indicate that PLT protein dosage is translated into distinct cellular responses and high levels of PLT activity promote stem cell identity and maintenance; lower levels promote mitotic activity of stem cell daughters; and further reduction in levels is required for cell differentiation.
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Short-range control of cell differentiation in the Arabidopsis root meristem
TL;DR: The data indicate that pattern formation in the root meristem is controlled by a balance between short-range signals inhibiting differentiation and signals that reinforce cell fate decisions, which are strikingly similar to examples in animal development, such as during delamination of Drosophila neuroblasts.
Journal ArticleDOI
Cell fate in the Arabidopsis root meristem determined by directional signalling.
TL;DR: It is demonstrated that positional signals can be perpetuated from more mature to initial cells to guide the pattern of meristem cell differentiation, offering an alternative to the general opinion that meristems are the source of patterning information.