Fig. 5

Chemical analysis of suberin in poplar roots. a Monomer composition of poplar root suberin harvested after 5 weeks of hydroponic cultivation in control conditions. The representative qualitative and quantitative composition of zone B is given. Means with standard deviations (n = 10 biological replicates) are shown. acid = primary acid, alcohol = primary alcohol, 2-OH acid = 2-hydroxy acid, ω-OH acid = ω-hydroxy acid, α,ω-diacid = α,ω-dicarboxylic acid. b–d Amounts of suberin diagnostic ω-hydroxy acids and α,ω-dicarboxylic acids in root zone A and B. Roots were harvested after 4 and 5 weeks of hydroponic cultivation in control conditions. Identified amounts were related to endodermal surface area (b), root length (c), and root dry-weight (d). Means with standard deviations (n = 10 biological replicates) are shown