Figure legends
Figure 1. Total terpenoid contents in xylem sap (A), total terpenoid
emissions (B) and total terpenoid contents in different tissues (C) as
well as terpenoid composition in xylem sap (D), of emissions (E), and in
different tissues (F) of Norway spruce trees. Data are means ± SE of at
least five biological replicates each. MT, monoterpenes; MT-O,
oxygenated monoterpenoids; SQT, sesquiterpenes; SQT-O, oxygenated
sesquiterpenoids; DT, diterpenes; DT-O, oxygenated diterpenoids.
Different letters indicate significant difference at p<0.05 by
ANOVA on ranks.
Figure 2. Emission rates (A), and contents/concentrations of the 16 most
abundant oxygenated monoterpenoids in current-year needles (B), xylem
sap (C), bark (D), wood (E), and roots (F) of Norway spruce trees. Data
are means ± SE of at least five biological replicates. All compounds
emitted but under-represented in needles are highlighted in blue.
Figure 3. Emission rates (A), and contents/concentrations of the 10 most
abundant monoterpenes in current-year needles (B), xylem sap (C), bark
(D), wood (E), and roots (F) of Norway spruce trees. Data are means ± SE
of at least five biological replicates. All compounds emitted but not
present in needles are highlighted in blue.
Figure 4. Emission rates (A), and contents/concentrations of the 11 most
abundant sesquiterpenes in current-year needles (B), xylem sap (C), bark
(D), wood (E), and roots (F) of Norway spruce trees. Data are means ± SE
of at least five biological replicates. All compounds emitted but absent
or under-represented in needles are highlighted in blue.
Figure 5. Emission rates (A), and contents/concentrations of the 8 most
abundant oxygenated sesquiterpenoids in current-year needles (B), xylem
sap (C), bark (D), wood (E), and roots (F) of Norway spruce trees. Data
are means ± SE of at least five biological replicates. All compounds
emitted but under-represented in needles are highlighted in blue.
Figure 6. Score plot of a partial least-square discriminant analysis
(PLS-DA) of the terpenoid contents in xylem sap, bark, wood,
current-year needles and roots of Norway spruce under natural condition
in 2015. The loading plot, which indicates the terpenoids that are
responsible for the sample distribution in the score plot, is given in
Figure S1 available as Supplementary Data at Plant Cell and
Environment online.
Figure 7. Venn plot indicating the numbers of terpenoids present in
roots, bark, wood and xylem sap of Norway spruce (graph drawn online:http://bioinformatics.psb.ugent.be/webtools/Venn/and the specific compounds were shown in Table S3).
Figure 8. Venn plot indicating the numbers of terpenoids present in
needles, emissions and xylem sap of spruce (graph drawn online:http://bioinformatics.psb.ugent.be/webtools/Venn/and the specific compounds were shown in Table S4).