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. 2014 Nov 28;38(4):812–826. doi: 10.1111/pce.12455

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© 2014 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Xanthophyll cycle pigments following controlled sublethal heat stress. Violoxanthin (hatched bars), antheraxanthin (dotted bars) and zeaxanthin (white bars) in (a) Senecio incanus and (b) Ranunculus glacialis, expressed as a percentage of total xanthophyll cycle pigments, and their de-epoxidation state (A + Z)/(V + A + Z)·100% (black bars) immediately following the termination of controlled, in situ heat treatments (S. incanus: 44 °C, Ra. glacialis: 41 °C) in the dark mode and in the light mode are shown in comparison with untreated plants (control). Significant differences between the individual pigments (superscript numbers) are indicated by different letters (one-way anova, Duncan's test, P < 0.05)