September 2013

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  • Molecular cytogenetics of repetitive DNA in jute species
    in

    Molecular cytogenetics of repetitive DNA in jute species

    The genomes and chromosomes of the important fibre crops white jute and Tossa jute (Corchorus species) are poorly characterized. Information is essential for breeding and improvement, with characters including environmental adaptability, fibre quality and susceptibility to diseases differing between the species. Begum et al. use a comparative analysis of a prominent satelllite DNA family, identified in […] More

  • Hydraulic resistances in developing kiwifruit berry
    in

    Hydraulic resistances in developing kiwifruit berry

    Xylem flows into most fruits decline as the fruit develop, with important effects on mineral and carbohydrate accumulation. Mazzeo et al. use pressure chamber and flow-meter techniques to examine changes in xylem hydraulic resistance (RT) in kiwifruit, Actinidia deliciosa, during fruit development. They find that increased RT in the receptacle zone coincides with slowing of fresh-weight […] More

  • Altmetrics for a recent paper.
    in

    Altmetrics beyond the numbers

    There’s an interesting post up on Gaming Altmetrics at altmetric.com. We’re looking seriously at improving how our papers are presented for altmetric services like altmetric.com and ImpactStory. What interests me is that there is a qualitative aspect to the coverage. Take for instance this entry on a recent paper: If you have the bookmarklet you […] More

  • Hydrotropism and root-system development in arabidopsis
    in

    Hydrotropism and root-system development in arabidopsis

    The gene MIZU-KUSSEI 1 (MIZ1) has been shown to regulate root hydrotropism in Arabidopsis thaliana, but its role in plant growth and survival under natural conditions is not yet fully known. Iwata et al. establish moisture gradients in soil and examine root system architecture, biomass production and survival of the A. thaliana mutant miz1 in comparison […] More

  • Variation and evolution of herkogamy in Exochaenium
    in

    Variation and evolution of herkogamy in Exochaenium

    The spatial separation of stigmas and anthers (herkogamy) functions to reduce self-pollination and avoid interference between pollen dispersal and receipt. Little is known about the evolutionary relationships among the main forms of herkogamy. Kissling and Barrett examine those relationships in Exochaenium, a genus of African herbs, using phylogeny reconstruction. They find that distyly originated once […] More

  • Pseudobulbs from Caularthron bilamellatum
    in

    Why is one orchid so happy to cater for ants?

    There’s a paper that’s moved into free access at Annals of Botany. Uptake of ant-derived nitrogen in the myrmecophytic orchid Caularthron bilamellatum by Gegenbauer et al. It describes an odd orchid. Caularthron bilamellatum is a Myrmecophyte. A Myrmecophyte is a plant that has evolved to live with ants. It’s a facultative mutualism which means that […] More

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