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Rapid Regulation of Light Harvesting and Plant Fitness in the Field.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
2002 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 297, no 5578, 91-93 p.Article in journal (Refereed) Published
Abstract [en]

We used Arabidopsis thaliana mutants to examine how a photosynthetic regulatory process, the qE-type or ΔpH-dependent nonphotochemical quenching, hereafter named feedback de-excitation, influences plant fitness in different light environments. We show that the feedback de-excitation is important for plant fitness in the field and in fluctuating light in a controlled environment but that it does not affect plant performance under constant light conditions. Our findings demonstrate that the feedback de-excitation confers a strong fitness advantage under field conditions and suggest that this advantage is due to the increase in plant tolerance to variation in light intensity rather than tolerance to high-intensity light itself.                      

Place, publisher, year, edition, pages
2002. Vol. 297, no 5578, 91-93 p.
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Biological Sciences
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URN: urn:nbn:se:uu:diva-43934DOI: 10.1126/science.1072359OAI: oai:DiVA.org:uu-43934DiVA: diva2:71839
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-05Bibliographically approved

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Ågren, Jon

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