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  • Hierarchical clustering and heat map of ER stress-related genes in leaves treated with H2O2, Rot, MV, DCMU and 3-AT (average linkage and Euclidean distance as similarity measure).

    Organelle-originated ROS and endoplasmic reticulum responses

    Ozgur et al. induce the formation of reactive oxygen species (ROS) in chloroplasts, mitochondria and peroxisomes of Arabidopsis thaliana and find that relatively low concentrations of ROS are more effective for induction of the ER stress response, and that mitochondrial and chloroplastic ROS production have different induction mechanisms for the UPR and ER stress responses. More

  • Fennel

    “Roger that!” Do plants have sound perception skills?

    A wide range of abilities have long been attributed to the animals (within pluricellular organisms of the living world) to animals only: the ability to move, to stimulate an organ repetitively and very quickly, to communicate with one another or to act in a network. In practice, these skills are easily noticeable in animals by […] More

  • Mastoparan-induced programmed cell death in Chlamydomonas

    Mastoparan-induced programmed cell death in Chlamydomonas

    Under stress-promoting conditions unicellular algae can undergo programmed cell death (PCD), but the mechanisms are poorly understood. Yordanova et al. expose Chlamydomonas reinhardtii to the G-protein activator mastoparan (MP) and find that cells express several features of necrosis and vacuolar cell death, accompanied by nuclear condensation and DNA fragmentation. Depending on the physiological state of the […] More

  • Molecular control of legume nodulation

    Molecular control of legume nodulation (Botanical Briefing)

    Legume plants enter into symbiotic relationships with soil bacteria in order to obtain nitrogen to sustain plant growth. The nodulation associated with this is regulated in response to both internal developmental signals via the autoregulation of nodulation (AON) and by environmental signals, such as the availability of soil nitrogen. Reid et al. focus on the conservation […] More

  • SI-mediated actin alterations in pollen (Review)

    SI-mediated actin alterations in pollen (Review)

    Self-incompatibility (SI) is generally controlled by the S-locus, and comprises allelic pollen and pistil S-determinants. Poulter et al. review and discuss our current understanding of the cytoskeletal alterations induced in incompatible pollen during SI and their relationship with programmed cell death in Papaver rhoeas, focussing on data relating to the formation of F-actin punctate foci. Analysis […] More

  • Network Reduction: Science Signalling

    Networks, systems biology and data analysis

      In my research, I always seem to be somewhere near the extremes of having too much data or not having enough data to address the questions I am asking. Even in experimental design, there seems to be a similar dichotomy: how to find the answer when you can only realistically use eight microscope slide […] More

  • Microarray-analysis for components of salinity-stress tolerance

    Microarray-analysis for components of salinity-stress tolerance

    Microarray-analysis for components of salinity-stress tolerance Thiourea has been demonstrated to impart salinity-stress tolerance to seedlings of mustard, Brassica juncea. Srivastava et al.  perform a genome-wide transcriptome analysis of seeds treated with either salinity, or salinity plus thiourea. They identify 33 genes showing differential expression between the treatments, belonging to different signalling (ABA and other […] More