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Table 1 Pigment content, PSII maximum quantum yield (Fv/Fm) and PSII functional antenna size of WT and mutants PG-14 and SOR

From: Combined resistance to oxidative stress and reduced antenna size enhance light-to-biomass conversion efficiency in Chlorella vulgaris cultures

Genotype

Chl/cel l (pg)

Chl a/b

Chl/Car

Fv/Fm

PSII antenna size (\( {\text{T}}_{ 2/ 3}^{ - 1} 10^{ 3} {\text{ms}}^{ - 1} \))

WT

0.26 ± 0.03a

2.67 ± 0.22a

4.03 ± 0.22a

0.67 ± 0.03a

6.74 ± 0.49a

PG-14

0.13 ± 0.02b

4.12 ± 0.30b

2.25 ± 0.13b

0.69 ± 0.05a

4.40 ± 0.27b

SOR-1

0.13 ± 0.02b

4.12 ± 0.20b

2.24 ± 0.17b

0.67 ± 0.03a

4.17 ± 0.21b

SOR-5

0.11 ± 0.03b

3.96 ± 0.31b

2.24 ± 0.05b

0.66 ± 0.03a

4.37 ± 0.23b

SOR-6

0.13 ± 0.03b

4.20 ± 0.12b

2.25 ± 0.07b

0.66 ± 0.05a

4.29 ± 0.30b

  1. Parameters were measured on dark-adapted cell suspension of WT, PG-14 and SOR strains, upon 7 days of photoautotrophic growth in BG-11 medium in low light conditions (100 µmol photons m−2 s−1, 25 °C). Data are expressed as mean ± SD, n > 4. For each parameter measured, significantly different values among genotypes (ANOVA test, p < 0.05) are marked with different letters