Bioresources and Bioprocessing

Table 1 Repair rate (r) and damage rate (k) of photosystem II obtained from effective quantum yield dynamics of haploid (1N) and diploid (2N) Emiliania huxleyi during 1 h of acute exposure to PAR or PAR + UVR under a solar radiation simulator according to Heraud and Beardall (2000)

From: Different photosynthetic responses of haploid and diploid Emiliania huxleyi (Prymnesiophyceae) to high light and ultraviolet radiation

	1N		2N
	PAR	PAR + UVR	PAR	PAR + UVR
Repair rate (r)	0.19 ± 0.03^a	0.20 ± 0.01^a	0.12 ± 0.06^a	0.14 ± 0.02^a
Damage rate (k)	0.18 ± 0.03^b	0.24 ± 0.01^a	0.07 ± 0.02^c	0.10 ± 0.02^c
r/k ratio	1.06 ± 0.02^b	0.84 ± 0.06^c	1.67 ± 0.28^a	1.48 ± 0.10^a

PAR and UVR were 83.3 W m⁻² (400 µmol photons m⁻² s⁻¹) and 19.0 W m⁻², respectively. The values are shown as the mean ± standard deviation (n = 3). Different letters denote significantly different means between different life-cycle phases and radiation treatments (P < 0.05)

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