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A recent "Molecular Ecology" paper by the Bomblies group (IMPB) shows that meiotic recombination rate, as well as abnormal chromosome associations that can lead to aneuploidy, co-​vary with temperature across a growing season in wild populations of a tetraploid plant, Arabidopsis arenosa.

In a recent EMBO Journal study the Voinnet group (IMBP) identifies the Arabidopsis EXPORTIN5 ortholog as the first component required for both cell-​to-cell and long-​distance movement of plant microRNAs. This work clarifies a process that, while agronomically important, had remained cryptic so far.