Authors: WeiHsin Chiu John Chandler Gerda Cnops Mieke Van Lijsebettens Wolfgang Werr
Publish Date: 2007/02/16
Volume: 63, Issue: 6, Pages: 731-744
Abstract
An EMS ethyl methanesulfonate mutagenesis effector screen performed with the STMGUS marker line in Arabidopsis thaliana identified a lossoffunction allele of the TORNADO2 gene The histological and genetic analyses described here implicate TRN2 in SAM function where the peripheral zone in trn2 mutants is enlarged relative to the central stem cell zone The trn2 mutant allele partially rescues the phenotype of shoot meristemless mutants but behaves additively to wuschel and clavata3 alleles during the vegetative phase and in the outer floral whorls The development of carpels in trn2 wus1 double mutant flowers indicates that pluripotent cells persist in floral meristems in the absence of TRN2 function and can be recruited for carpel anlagen The data implicate a membranebound plant tetraspanin protein in cellular decisions in the peripheral zone of the SAMWe thank Melanie Cole Pia Neyt and Wilson ArdilesDiaz for excellent technical assistance This research was funded by the Deutsche Forschungsgemeinschaft through SFB 572 WH Chiu was a member of the Graduate College “Molecular Analysis of Plant Development” at the University of Cologne
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