The role of gibberellins (GAs) during floral induction has been widely studied in the annual plant Arabidopsis thaliana. Less is known about this control in perennials. It is thought that GA is a major regulator of flowering in rose. In spring, low GA content may be necessary for floral initiation. GA inhibited flowering in once-flowering roses, whereas GA did not block blooming in continuous-f...

"SMELL THE ROSES" (upper-case letters are the program's). The program thought I didn't smell the roses because I was leading too hectic a life. Although busy, I do nonetheless take time for such things, but I answered "No" to that question because of rather severe allergies! Nevertheless, as a patient who had just spent a considerable amount of time entering the data, I was pleased the program ...

(1) Centre de Mathématiques Appliquées (UMR 7641) École Polytechnique, 91128 Palaiseau Cedex, France ([email protected]). (2) Laboratoire J.L.Lions (UMR 7598), Université Paris 7 Denis Diderot, 75252 Paris Cedex 05, France ([email protected]). (3) Laboratoire de Robotique et Mésorobotique (LRM), CEA, DRT-IdF, LIST/DTSI/SRT, 18 route du Panorama, BP 6, 92265 Fontenay aux Roses C...

The interaction of roses with the leaf spot pathogen Diplocarpon rosae (the cause of black spot on roses) is an interesting pathosystem because it involves a long-lived woody perennial, with life history traits very different from most model plants, and a hemibiotrophic pathogen with moderate levels of gene flow. Here we present data on the molecular structure of the first monogenic dominant re...