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Series GSE21705 Query DataSets for GSE21705
Status Public on Aug 01, 2010
Title Differentiating Arabidopsis shoots from leaves by combined YABBY activities
Organism Arabidopsis thaliana
Experiment type Expression profiling by array
Summary In seed plants, leaves are born on radial shoots but unlike shoots they are determinate dorsiventral organs made of flat lamina. YABBY genes are found only in seed plants and in all cases studied, are expressed primarily in lateral organs and in a polar manner. Despite their simple expression, Arabidopsis plants lacking all YABBY gene activities have a wide range of morphological defects in all lateral organs as well as the shoot apical meristem. Here we show that leaves lacking all YABBY activities are initiated as dorsiventral appendages but fail to properly activate lamina programs. In particular, the activation of most CIN-TCPs does not commence, SAM-specific programs are reactivated, and a marginal leaf domain is not established. Altered distribution of auxin signalling and the auxin efflux carrier PIN1, highly reduced venation, initiation of multiple cotyledons, and gradual loss of the SAM accompany these defects. We suggest that YABBY functions were recruited to mould modified shoot systems into flat plant appendages by translating organ polarity into lamina specific programs that include marginal auxin flow and activation a maturation schedule directing determinate growth.
Overall design Four repeats of wild type 14 DAS plants were used to compare to fil,y3 and fil,y3,y5 mutants of similar age (two repeats of each)
Contributor(s) Sarojam R, Sappl PG, Goldshmidt A, Efroni I, Floyd SK, Eshed Y, Bowman JL
Citation(s) 20628155
Submission date May 06, 2010
Last update date Jun 12, 2017
Contact name Idan D. Efroni
Organization name Weizmann Institute
Street address Weizmann
City Rehovot
ZIP/Postal code 76100
Country Israel
Platforms (1)
GPL198 [ATH1-121501] Affymetrix Arabidopsis ATH1 Genome Array
Samples (8)
GSM541650 wt_1
GSM541651 wt_2
GSM541652 wt_3
BioProject PRJNA127171

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Supplementary file Size Download File type/resource
GSE21705_RAW.tar 17.6 Mb (http)(custom) TAR (of CEL)
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Raw data provided as supplementary file
Processed data included within Sample table

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