N°28I quarterlyI jaNuary 2013 Snapshot | 39 10 µm Wild vs Mutant BY IsabelletratNer of the seed coat that protects them, to width of approximately 200 µm, high- see the effect of the mutation of the lighting the tremendous developmen- w - major plant cell cycle regulator CDKa. tal plasticity of plants.this image wasAre these strange creatures hud dling or fighting each other? they While the absence of the homologous obtained by arp schnittger’s team, hotothèque actually belong to the plant kingdom, enzyme is lethal in mice, mutant plant who specializes in plant cell cycle at the and more precisely to the species embryos can germinate and develop IbMP laboratory.1 Arabidopsis thaliana, a plant model into mature but severely compromised 01.Institut de biologie moléculaire des plantes P rs ttger/CN widely used in molecular biology.the and sterile plants.remarkably, the mu- (CNrs). photograph (propidium iodine stain- tant embryos (right), although com- CoNtaCt INforMatIoN: NI ing and confocal microcopy) shows posed of much fewer cells, reach the Arp Schnittgertrasbourg.sMP,bI h C © a. s plant embryos that were dissected out same size as wild-type ones (left) with a >arp.schnittger@ibmp-cnrs.unistra.fr
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