Fig. 1

An overview of tea samples used in the construction of gene co-expression network. Treated or untreated tea tissues were sampled in the original studies. The mostly-used tea tissues were leave and bud, accounting for 39 and 15%, respectively. In the treated tea tissues, fluoride and ammonium were widely used (11%). It is noted that ~ 19% of the total tea samples were not indicated as treat/untreated tissues in the original studies