Plant Circadian Clocks Increase Photosynthesis, Growth, Survival, and Competitive Advantage
2005; American Association for the Advancement of Science; Volume: 309; Issue: 5734 Linguagem: Inglês
10.1126/science.1115581
ISSN1095-9203
AutoresAntony N. Dodd, Neeraj Salathia, Anthony Hall, Éva Kevei, Réka Tóth, Ferenc Nagy, Julian M. Hibberd, Andrew J. Millar, Alex Webb,
Tópico(s)Plant responses to elevated CO2
ResumoCircadian clocks are believed to confer an advantage to plants, but the nature of that advantage has been unknown. We show that a substantial photosynthetic advantage is conferred by correct matching of the circadian clock period with that of the external light-dark cycle. In wild type and in long– and short–circadian period mutants of Arabidopsis thaliana , plants with a clock period matched to the environment contain more chlorophyll, fix more carbon, grow faster, and survive better than plants with circadian periods differing from their environment. This explains why plants gain advantage from circadian control.
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