Induction of new chitinase isoforms in tomato roots during interactions with Glomus mosseae and/or Phytophthora nicotianae var parasitica MJ Pozo, E. Dumas-Gaudot, S. Slezack, C. Cordier, A. Asselin, S. Gianinazzi, V. Gianinazzi-Pearson, C. Azcón-Aguilar and JM Barea Agronomie, 16 10 (1996) 689-697 DOI: 10.1051/agro:19961014