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- Title
On the Nonmonotonic, Hormetic Photoprotective Response of Plants to Stress.
- Authors
Agathokleous, Evgenios; Mitsutoshi Kitao; Hisanori Harayama
- Abstract
Accumulated evidence show that reactive species play a dual role in plants as well, with likely biphasic responses. This suggests that photoprotective mechanisms may also show similar patterns because they are highly related to reactive species. The non-photochemical quenching (NPQ) is an index of heat dissipation of excitation energy in the antenna system. We present here preliminary evidence from some published studies showing significant biphasic response of NPQ to increasing doses of stress, with U-shaped or inverted U-shaped dose–response relationships, typical of hormesis. This evidence provides a remarkable perspective for designing novel studies where the fate of light energy will be seen through the lens of hormesis.
- Subjects
LIGHT; DOSE-response relationship in biochemistry; ENERGY dissipation; CHLOROPHYLL spectra; ELECTRON transport; PLANT capacity
- Publication
Dose-Response, 2019, Vol 17, Issue 2, p1
- ISSN
1559-3258
- Publication type
Article
- DOI
10.1177/1559325819838420