Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Effect of PCO1 overexpression [normoxia]

ABSTRACT: The effect of the overexpression of Plant Cysteine Oxidase (PCO1) on the transcriptome of Arabidopsis rosettes was investigated. For this purpose, 4-week old rosette of wild-type and 35S:FLAG:CDO1 plants were compared. Samples were composed of a pool of 5 plants. In total, 6 samples were analyzes, subdivided in 2 thesis with 3 replicates each. 35S:PCO1 plants were compared to wild-type plants.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Francesco Licausi

PROVIDER: E-GEOD-44342 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Plant cysteine oxidases control the oxygen-dependent branch of the N-end-rule pathway.

Weits Daan A DA Giuntoli Beatrice B Kosmacz Monika M Parlanti Sandro S Hubberten Hans-Michael HM Riegler Heike H Hoefgen Rainer R Perata Pierdomenico P van Dongen Joost T JT Licausi Francesco F

Nature communications 20140306

In plant and animal cells, amino-terminal cysteine oxidation controls selective proteolysis via an oxygen-dependent branch of the N-end rule pathway. It remains unknown how the N-terminal cysteine is specifically oxidized. Here we identify plant cysteine oxidase (PCO) enzymes that oxidize the penultimate cysteine of ERF-VII transcription factors by using oxygen as a co-substrate, thereby controlling the lifetime of these proteins. Consequently, ERF-VII proteins are stabilized under hypoxia and a ...[more]

PMID: 24599061

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Project description:Plants initially undergo a period of vegetative development, in which it produces leaves from shoot apical meristem (SAM) and roots from the root apical meristem. Later in development, the SAM undergoes a change in fate and enters reproductive development called as floral transition, producing flowers and seeds. Our understanding of the molecular and genetic mechanisms that underlie reproductive development in plants has increased tremendously in the past decade, essentially through the work on Arabidopsis. In this study, we have analyzed the spatial and temporal gene expression in various tissues/organs and developmental stages of rice using microarray technology to identify the genes differentially expressed during various stages of reproductive development. Experiment Overall Design: Various rice tissues/organs (seedling root, mature leaf and Y leaf) and stages of reproductive (panicle and seed) development were used for RNA extraction and hybridization on Affymetrix microarrays. Three biological replicates of each sample were used for microarray analysis. We sought to obtain developmental and temporal gene expression profiles at each stage to identify the differentially expressed genes. Different stages of panicle and seed development have been categorized according to panicle length and days after pollination, respectively, based on landmark developmental events as follows: up to 0.5 mm, shoot apical meristem and rachis meristem (SAM); 0-3 cm, floral transition and floral organ development (P1); 3-10 cm, meiotic stage (P2 and P3); 10-15 cm, young microspore stage (P4); 15-22 cm, vacuolated pollen stage (P5); 22-30 cm, mature pollen stage (P6); 0-2 dap, early globular embryo (S1); 3-4 dap, middle and late globular embryo (S2); 5-10 dap, embryo morphogenesis (S3); 11-20 dap, embryo maturation (S4); 21-29, dormancy and desiccation tolerance (S5). These stage specifications are approximations based on information from Itoh et al., 2005, Plant Cell Physiol, 46, 23-47.

Dataset Information

Effect of PCO1 overexpression [normoxia]

Publications

Plant cysteine oxidases control the oxygen-dependent branch of the N-end-rule pathway.

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