Dataset Information

Large-scale phosphoproteome analysis in seedling leaves of Brachypodium distachyon L

ABSTRACT: In this study, we carried out the first large-scale phosphoproteome analysis of seedling leaves in Brachypodium accession Bd21 using TiO2 microcolumns combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) and MaxQuant software. A total, 1,470 phosphorylation sites in 950 phosphoproteins were identified. Of the 950 phosphoproteins identified, 127 contained 3 to 8 phosphorylation sites. The phosphoproteins and phosphosites identified in our study expanded our knowledge of protein phosphorylation modification in plants, especially in monocot.

INSTRUMENT(S): LTQ Orbitrap Elite

ORGANISM(S): Brachypodium Distachyon (purple False Brome) (trachynia Distachya)

TISSUE(S): Plant Cell, Leaf

DISEASE(S): Disease Free

SUBMITTER: Dong-Wen Lv

LAB HEAD: Yue-Ming Yan

PROVIDER: PXD000868 | Pride | 2016-07-09

REPOSITORIES: Pride

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Publications

Large-scale phosphoproteome analysis in seedling leaves of Brachypodium distachyon L.

Lv Dong-Wen DW Li Xin X Zhang Ming M Gu Ai-Qin AQ Zhen Shou-Min SM Wang Chang C Li Xiao-Hui XH Yan Yue-Ming YM

BMC genomics 20140516

<h4>Background</h4>Protein phosphorylation is one of the most important post-translational modifications involved in the regulation of plant growth and development as well as diverse stress response. As a member of the Poaceae, Brachypodium distachyon L. is a new model plant for wheat and barley as well as several potential biofuel grasses such as switchgrass. Vegetative growth is vital for biomass accumulation of plants, but knowledge regarding the role of protein phosphorylation modification d ...[more]

PMID: 24885693

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Project description:Virus resistances that are recessively inherited are associated with loss-of-susceptibility resistance alleles. Resistance to Watermelon mosaic virus (WMV) of melon accession TGR-1551 is expressed as a drastic reduction of the virus titer, and is recessively inherited. In this work, viral RNA accumulation was measured in TGR-1551 and in susceptible WMV-infected melon plants by real time quantitative PCR (qPCR), and gene expression of 17,443 unigenes represented in a melon microarray was monitored in a time-course experiment. Virus accumulation was higher in inoculated cotyledons of the resistant genotype up to 7 days post-inoculation; from this time on, virus accumulation was much higher in plants of the susceptible genotype. Microarray experiments were carried with samples from inoculated cotyledons at 1 and 3 dpi to monitor early changes in response to virus infection, and at 7 dpi. Samples from systemically infected leaves harvested at 15 dpi were also included in the analysis. Results showed much more profound transcriptomic alterations in resistant plants compared to susceptible ones. Analyses of gene expression profiles reveal deep and extensive transcriptomic alterations in TGR-1551 plants, many of them involving pathogen response-related genes. Overall, data suggested that resistance to WMV in TGR-1551 is associated with a defense response, contrasting with its recessive nature. Two melon genotypes have been used to analyse transcriptomic responses to infection by Watermelon mosaic virus: Tendral (susceptibel to WMV) and TGR-1551 (resistant to WMV). For each genotype, 60 melon seedlings were inoculated with WMV-M116 and another 60 were mock-inoculated. Cotyledons of 10 plants were harvested at 1, 3, 5, 7, 9 and 15 dpi. At 15 dpi, the systemically infected second true leaf was also harvested. To reduce variability, each biological replicate used in this study was prepared by mixing the RNA extracts from 2 or 4 mock or WMV-inoculated cotyledons, respectively, or from 3 melon leaves. Samples (WMV infected and mock inoculated) corresponding to cotyledons at 1, 3 and 7 dpi, and leaves at 15 dpi were used for microarray hybridisations, three biological replicates for each one, leading to a total of 48 samples.

Dataset Information

Large-scale phosphoproteome analysis in seedling leaves of Brachypodium distachyon L

Publications

Large-scale phosphoproteome analysis in seedling leaves of Brachypodium distachyon L.

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