Metabolic discrimination of Catharanthus roseus leaves infected by phytoplasma using 1H-NMR spectroscopy and multivariate data analysis. - Choi,Y.H.; Tapias,E.C.; Kim,H.K.; Lefeber,A.W.M.; Erkelens,C.; Verhoeven,J.T.J.; Brzin,J.; Zel,J.; Verpoorte,R. (Plant Physiol, 2004)