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Analysis of the Arabidopsis shoot meristem transcriptome during floral transition identifies distinct regulatory patterns and an LRR protein that promotes flowering

ABSTRACT: We sequenced cDNA synthesized from mRNA from 3 time points of a time course of Arabidopsis thaliana shoot apical meristems. Plants were grown two weeks in short days (time point +0LD) and then exposed to long days for 1 day (time point +1LD) and 3 days (time point +3LD). Meristem cells were collected using laser capture microdissection, to generate a meristem-specific time course of gene expression in the early stages of floral induction. The experiment was done in three biological replicates (called A, B, and C). Some repetitions of sequencing on a few samples (technical replicates) were also done Examination of mRNA levels in shoot apical meristems at 3 time points from the stage of vegetative meristem to the stage of a transition meristem, before the formation of floral meristems.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: George Coupland 

PROVIDER: E-GEOD-34476 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Analysis of the Arabidopsis shoot meristem transcriptome during floral transition identifies distinct regulatory patterns and a leucine-rich repeat protein that promotes flowering.

Torti Stefano S   Fornara Fabio F   Vincent Coral C   Andrés Fernando F   Nordström Karl K   Göbel Ulrike U   Knoll Daniela D   Schoof Heiko H   Coupland George G  

The Plant cell 20120207 2

Flowering of Arabidopsis thaliana is induced by exposure to long days (LDs). During this process, the shoot apical meristem is converted to an inflorescence meristem that forms flowers, and this transition is maintained even if plants are returned to short days (SDs). We show that exposure to five LDs is sufficient to commit the meristem of SD-grown plants to flower as if they were exposed to continuous LDs. The MADS box proteins SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) and FRUITFULL (FU  ...[more]

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