Extended Data Fig. 2: Enzyme activities involved in the picein formation in different pear cultivars.

(a) Proposed biosynthetic pathway of picein from 4-Coumaryl-CoA (4CA-CoA) in pear leaves. Enzymatic activities responsible for phase I (b) and phase II (c) were assessed in crude enzyme extracts from young fully expanded pear leaves. Data are means ± SEM from three biological replicates, sample size for each replicate is 10 leaves over 5 independent plants.