Terpenoid and lipid profiles vary in different Phytophthora cactorum - strawberry interactions Author Toljamo, Anna * & Faculty of Science and Forestry, Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 1627, FI- 70211, Kuopio, Finland Author Koistinen, Ville Author Hanhineva, Kati Author K, Sirpa Author arenlampi * & Faculty of Science and Forestry, Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 1627, FI- 70211, Kuopio, Finland Author Kokko, Harri text Phytochemistry 2021 112820 2021-09-30 189 1 8 http://dx.doi.org/10.1016/j.phytochem.2021.112820 journal article 10.1016/j.phytochem.2021.112820 1873-3700 8259418 2.1. Overview of metabolic changes caused by P. cactorum inoculations The metabolite analysis revealed 3952 molecular features from the crown samples. Based on the overall metabolite profiles of the samples, also illustrated by principal component analysis ( Fig. 1 ), Fragaria species is the predominant factor influencing the metabolite profiles. In F. × ananassa (cv. Senga Sengana), inoculation with the P. cactorum isolate Pc407 (Pc407-Fa) caused a clear separation in PC2 (squares), whereas the Pc440-inoculated samples (Pc440-Fa) clustered near to the controls (C-Fa). In F. vesca (accession Hawaii 4, clone H4.4), both P. cactorum isolates influenced the metabolite profiles (balls), although the differences were less pronounced than in the Pc407-Fa interaction. The biological replicates of C-Fv, Pc440-Fv, and Pc407-Fa, were tightly clustered within each of these groups, whereas clustering of Pc440-Fa, C-Fa, and Pc407-Fv samples was more loose in the PCA plot ( Fig. 1 ). This could be attributed to the size variation of the crown samples. The diameters of the crowns were not recorded, but biomass differences between the biological replicates were considerable, particularly among the Pc440-Fa and C-Fa samples (Table S1).