ARABIDOPSIS RESEARCH ROUND-UPARABIDOPSIS RESEARCH ROUND-UP

18th Nov 2013

In this week’s Arabidopsis Research Round-up we have three new papers with authors from Aberystwyth University, Thermofisher UK and the European Bioinformatics Institute in Hinxton, Cambridgeshire. Enjoy!

 

  • Purdy SJ, Bussell JD, Nunn CP and Smith SM. Leaves of the Arabidopsis maltose exporter 1 mutant exhibit a metabolic profile with features of cold acclimation in the warm. PLOS ONE, 5 November 2013. DOI: 10.1371/journal.pone.0079412. [Open Access]

Maltose accumulates in Arabidopsis plants during periods of cold weather and is thought to have cryoprotectant properties. However, the mutant maltose excess 1-1 (mex1-1) accumulates maltose in warm temperatures. This paper, written in collaboration with the University of Western Australia, and Sarah Purdy and Christopher Nunn from Aberystwyth, explores whether elevated maltose in mex1-1 in the warm changes the metabolism and physiology relative to the wild type. It is suggested that the mex1-1 mutation in warm-grown plants confers aspects of cold acclimation, which may in turn compromise the growth of mex1-1 relative to WT. 

 

  • Galland M, Huguet R, Arc E, Cueff G, Job D and Rajjou L. Dynamic proteomics emphasizes the importance of selective mRNA translation and protein turnover during Arabidopsis seed germination. Molecular & Cellular Proteomics, 6 November 2013. DOI: 10.1074/mcp.M113.032227. [Open Access while in press]

Romain Huguet from Thermofisher UK was involved in this Molecular & Cellular Proteomics paper along with colleagues from the Jean-Pierre Bourgin Institute in France, BayerCropScience France, and the University of Innsbrück in Austria. Using a combination of 2D gel-based proteomics and dynamic 35-Met-labelled proteomics, a detailed description is provided of the changing proteome during the course of Arabidopsis seed germination. In addition, specific patterns of protein synthesis are identified at given time points. The data show that mRNA translation and protein turnover are critical for timing the molecular events leading to germination and seedling establishment.

 

  • Monaco MK, Stein J, Naithani S, et al. Gramene 2013: comparative plant genomics resources. Nucleic Acids Research, 11 November 2013. DOI: 10.1093/nar/gkt1110. [Open Access]

An international collaboration including six members of the Cambridgeshire-based European Bioinformatics Institute present updates to Gramene, a curated online resource for comparative functional genomics in crops and model plant species. Gramene hosts 27 fully, and 10 partially sequenced reference genomes, as well as genetic variation data, sequences and genome mappings for 10 species, including Arabidopsis. See www.gramene.org for more details.