12th Aug 2013

This week’s Arabidopsis Research Round-up brings you two new papers published in The Plant Journal


  • Lilley JLS, Gan Y, Graham IA, Nemhouser JL. The effects of DELLAs on growth change with developmental stage and brassinosteroid levels. The Plant Journal, 5 August 2013. DOI: 10.1111/tpj.12280.

Professor Ian Graham from the Centre for Novel Agricultural Products at the University of York was involved in this paper, in which the effects of brassinosteroid (BR) and giberellin (GA) hormones on the photomorphogenic growth of Arabidopsis embryos were studied using time-lapse imaging. During the transition between cotyledon opening and stem elongation, growth promotion by BRs and GAs switched from an additive to a synergistic relationship, yet molecular genetic analysis revealed unexpected roles for members of the DELLA family in this relationship.


  • Cheung CYM, Williams TCR, Poolman MG, Fell DA, Ratcliffe RG and Sweetlove LJ. A method for accounting maintenance costs in flux balance analysis improves the prediction of plant cell metabolic phenotypes under stress conditions. The Plant Journal, 6 August 2013. DOI: 10.1111/tpj.12252.

In a collaboration between the University of Oxford, Oxford Brookes University, and the University of Brasilia in Brazil, this paper describes a method to allow more accurate flux balance analysis of cultured Arabidopsis cells that takes cell transport and maintenance costs into account when determining intracellular fluxes.