Table II. Number of MEP- and MVA-derived isoprene units in Dol-n molecules synthesized in control and stress conditions.

Dols were isolated from Arabidopsis hairy roots fed [1-¹³C]Glc upon control and stress conditions. n_MEP and n_MVA stand for the number of MEP- and MVA-derived isoprene units, respectively; n = n_MEP + n_MVA. All n_MEP values from the estimated ranges shown give almost equivalent models (according to χ² test) for each Dol-n.

Dol	Control		Sorbitol
	nMEP	nMVA	nMEP	nMVA
Dol-13	8–9	4–5	9	4
Dol-14	11–12	2–3	14	0
Dol-15	8–11	4–7	15	0
Dol-16	9–10	6–7	14	2
Dol-17	10–11	6–7	13–14	3–4
Dol-18	9–11	7–9	9–11	7–9
Dol-19	8–10	9–11	8–10	9–11
Dol-20	9–10	10–11	10–11	9–10
Dol-21	11–13	8–10	9–10	11–12
Dol-22	10–11	11–12	9–11	11–13
Dol-23	8–11	12–15	10–12	11–13