Far-red light enrichment affects gene expression and architecture as well as growth and photosynthesis in rice.

Autor: Huber M; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands., de Boer HJ; Copernicus Institute of Sustainable Development, Department of Environmental Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands., Romanowski A; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.; Laboratory of Molecular Biology, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands., van Veen H; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.; Plant Stress Resilience, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.; Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands., Buti S; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands., Kahlon PS; Laboratory of Plant Physiology, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands., van der Meijden J; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands., Koch J; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands., Pierik R; Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.; Laboratory of Molecular Biology, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2024 Aug; Vol. 47 (8), pp. 2936-2953. Date of Electronic Publication: 2024 Apr 17.
DOI: 10.1111/pce.14909
Abstrakt: Plants use light as a resource and signal. Photons within the 400-700 nm waveband are considered photosynthetically active. Far-red photons (FR, 700-800 nm) are used by plants to detect nearby vegetation and elicit the shade avoidance syndrome. In addition, FR photons have also been shown to contribute to photosynthesis, but knowledge about these dual effects remains scarce. Here, we study shoot-architectural and photosynthetic responses to supplemental FR light during the photoperiod in several rice varieties. We observed that FR enrichment only mildly affected the rice transcriptome and shoot architecture as compared to established model species, whereas leaf formation, tillering and biomass accumulation were clearly promoted. Consistent with this growth promotion, we found that CO 2 -fixation in supplemental FR was strongly enhanced, especially in plants acclimated to FR-enriched conditions as compared to control conditions. This growth promotion dominates the effects of FR photons on shoot development and architecture. When substituting FR enrichment with an end-of-day FR pulse, this prevented photosynthesis-promoting effects and elicited shade avoidance responses. We conclude that FR photons can have a dual role, where effects depend on the environmental context: in addition to being an environmental signal, they are also a potent source of harvestable energy.
(© 2024 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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