Figure 4.

Results of the analysis when determined metabolites were grouped by CK types. Total iP-type CK content varied significantly throughout the heat stress experiment (p < 0.001), and this variation depended on the group of plants, as total iP levels decreased in M18 plants at the end of the stress (from 0.34 ± 0.04 to 0.22 ± 0.03 pmol/g FW), while it increased in M23 and M28 plants (from 0.26 ± 0.04 to 0.45 ± 0.06 pmol/g FW, and from 0.28 ± 0.06 to 0.50 ± 0.12 pmol/g FW, respectively). After the recovery period, total iP contents in M18 and M28 plants returned to levels similar to those at t0, while remaining unchanged in M23 plants.