1 Instituto de Bioquimica Vegetal y Fotosintesis, Consejo Superior de Investigaciones Cientificas (CSIC)-Universidad de Sevilla, Sevilla 41092, Spain.
2 Departamento de Bioquimica Vegetal y Biologia Molecular, Facultad de Biologia, Universidad de Sevilla, Sevilla 41012, Spain.
3 Guest Editor, The Plant Cell, American Society of Plant Biologists, USA.
4 Department of Biology, Duke University, Durham, NC 27708, USA.
5 Senior Editor, The Plant Cell, American Society of Plant Biologists, USA.
6 Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala 75007, Sweden.