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Table 1 Functional characteristics of the thylakoid membrane of WT (col) and MdY3IP1 (MdY3IP1-OE2, MdY3IP1-OE4 and MdY3IP1-OE24) transgenic Arabidopsis plants. Values were measured from plants grown under moderate light intensities (120 μmol photons m− 2 s− 1)

From: Ectopic expression of the apple nucleus-encoded thylakoid protein MdY3IP1 triggers early-flowering and enhanced salt-tolerance in Arabidopsis thaliana

Photosynthetic parameter

WT (col)

MdY3IP1-OE2

MdY3IP1-OE4

MdY3IP1-OE24

Fraction of oxidizable PSI, PM

0.12 ± 0.01

0.16 ± 0.01*

0.12 ± 0.01

0.13 ± 0.02

Effective PSI quantum yield, ФI

0.38 ± 0.02

0.45 ± 0.03*

0.41 ± 0.01*

0.46 ± 0.03*

PSI donor side limitation, ФND

0.52 ± 0.02

0.63 ± 0.03*

0.56 ± 0.01*

0.56 ± 0.02

PSI acceptor side limitation, ФNA

0.10 ± 0.01

0.11 ± 0.02

0.11 ± 0.02

0.10 ± 0.01

Effective PSI quantum yield, ФII

0.25 ± 0.03

0.24 ± 0.05

0.27 ± 0.03

0.30 ± 0.03

Yield of non-regulated non-photochemical energy loss, ФNO

0.33 ± 0.02

0.39 ± 0.07

0.34 ± 0.02

0.33 ± 0.01

Non-photochemical energy dissipation, ФNPQ

0.42 ± 0.01

0.32 ± 0.04*

0.39 ± 0.01*

0.37 ± 0.02*

Excitation pressure of PSII, 1-qP

0.40 ± 0.05

0.41 ± 0.02

0.42 ± 0.04

0.42 ± 0.01

  1. The values are the means±SD, n = 6–9. Statistically significant differences comparing the MdY3IP1 transgenic Arabidopsis plants to that of the corresponding WT (col) are marked with asterix (*). See text for details. WT, wild-type