Laboratoire Interactions Plantes Micro-organismes (LIPM) UMR441/2594, INRA/CNRS, F-31320 Castanet Tolosan, France.|Laboratoire Interactions Plantes Micro-organismes (LIPM) UMR441/2594, INRA/CNRS, F-31320 Castanet Tolosan, France.|Laboratoire Interactions Plantes Micro-organismes (LIPM) UMR441/2594, INRA/CNRS, F-31320 Castanet Tolosan, France.