. 2016 Jul 22;7:1092. doi: 10.3389/fpls.2016.01092

Table 1.

Characteristics of changes in photosynthetic parameters after VP induction and CO₂ concentration lowering.

	ΔA_CO2	Δϕ_PSI	Δϕ_PSII	ΔNPQ
Absolute parameter changes
VP at 360 ppm CO₂	-1.9 ± 0.3^∗, μmol m^-2 s^-1	-0.112 ± 0.009^∗	-0.081 ± 0.01^∗	0.51 ± 0.10^∗
CO₂ concentration lowering	-7.2 ± 0.6^∗, μmol m^-2 s^-1	-0.253 ± 0.017^∗	-0.301 ± 0.023^∗	1.63 ± 0.11^∗
VP at ∼10 ppm CO₂	-0.3 ± 0.1^∗ ^#, μmol m^-2 s^-1	-0.088 ± 0.004^∗	-0.051 ± 0.006^∗ ^#	0.17 ± 0.08^∗ ^#
Relative parameter changes, %
VP at 360 ppm CO₂	-31^∗	-22^∗	-17^∗	83^∗
CO₂ concentration lowering	-109^∗	-45^∗	-59^∗	203^∗
VP at ∼10 ppm CO₂	-4^∗ ^#	-16^∗	-10^∗ ^#	21^∗ ^#
Correlation coefficients between the VP amplitude in leaf and the magnitudes of photosynthetic parameter changes
VP at 360 ppm CO₂	-0.67^&	-0.55	-0.42	0.77^&
Correlation coefficients between the initiation time of the VP in leaf and the initiation time of the changes in photosynthetic parameters
VP at 360 ppm CO₂	-0.76^&	-0.52	-0.57	0.78^&
Correlation coefficients between ΔA_CO2 and the magnitudes of other photosynthetic parameter changes
VP at 360 ppm CO₂	–	0.77^&	0.65^&	-0.68^&

^∗p < 0.05 compared with parameter rate at 360 ppm CO₂, Student t-test.

^#p < 0.05 compared with changes in parameter rate induced by VP at 360 ppm CO₂, Student t-test.

^&correlation coefficient is significant (p < 0.05), Student t-test.

$r e l a t i v e p a r a m e t e r c h a n g e = \frac{a b s o l u t e p a r a m e t e r c h a n g e}{p a r a m e t e r r a t e u n d e r c o n t r o l c o n d i t i o n} \times 100 %$

Times of beginning of VP and photosynthetic changes were measured from the moment of burning.