July 16, 2013

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  • Medicago truncatula root with nodules infected with Nitrogen-fixing rhizobia.
    in

    Taking the Myc: evolution of the legume-rhizobia symbiosis

    The legume family of plants can form a symbiosis with nitrogen-fixing bacteria known as rhizobia. In return for a supply of nitrogen compounds the plant provides sugars and houses the rhizobia in special organs called nodules (see figure). The development of the nodules and the infection of rhizobia into them are tightly regulated by the […] More

  • Image: Wikimedia Commons.
    in

    Reasons to be cheerful (Parts, 4…)

    Backward-looking retrospectives [is there any other kind? – Ed.] are great. And that from the International Institute for Species Exploration at Arizona State University is one of the best. Annually, it publishes its list of the Top 10 new species discovered in the preceding year. Whilst this column has previously bemoaned the paucity of plant-based entrants […] More