Institution: | 1Institute of Biochemistry and Biotechnology (NFI), Martin Luther University Halle-Wittenberg, Halle/Saale D-06120, Germany, 2Istituto di Virologia Vegetale (IVV) del CNR, Research Unit of Bari, Bari I-70126, Italy and 3Agricultural Biotechnology Center, Ministry of Rural Development, Gödöllö H-2100, Hungary |