Embryonic Photosynthesis Affects Post-Germination Plant Growth
| Autor: | Ayala Sela, Christian Megies, Urszula Piskurewicz, Giovanni Finazzi, Laurent Mène-Saffrané, Luis Lopez-Molina |
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| Přispěvatelé: | Institute of Genetics and Genomics in Geneva (iGE3), Université de Genève (UNIGE), Department of Plant Biology [Fribourg], Light Photosynthesis & Metabolism (Photosynthesis), Physiologie cellulaire et végétale (LPCV), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Department of Botany and Plant Biology, University of Geneva, Grants from the Swiss National Science Foundation and by the State of Geneva (31003A-152660/1, 31003A-179472/1), ANR-10-LABX-0049,GRAL,Grenoble Alliance for Integrated Structural Cell Biology(2010), Université de Genève = University of Geneva (UNIGE), Université de Fribourg = University of Fribourg (UNIFR), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA) |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Chlorophyll Chloroplasts Arabidopsis thaliana Physiology Chloroplast development Arabidopsis Plant Development Germination Plant Science Photosynthesis 01 natural sciences chemistry.chemical_compound CPN60 Gene Expression Regulation Plant Embryonic photosynthesis Genetics [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Chaperonin complex [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology Seed development News and Views 2. Zero hunger biology Arabidopsis Proteins Cold temperature Plant physiology food and beverages Plant biology.organism_classification Cell biology ddc:580 chemistry Seedling Seedlings Embryogenesis Mutation Seeds Photomorphogenesis 010606 plant biology & botany |
| Zdroj: | Plant Physiology Plant Physiology, American Society of Plant Biologists, 2020, 182 (4), pp.2166-2181. ⟨10.1104/pp.20.00043⟩ Plant Physiology, 2020, 182 (4), pp.2166-2181. ⟨10.1104/pp.20.00043⟩ Plant Physiology, Vol. 182, No 4 (2020) pp. 2166-2181 |
| ISSN: | 1532-2548 0032-0889 |
| DOI: | 10.1104/pp.20.00043⟩ |
| Popis: | International audience; Photosynthesis is the fundamental process fueling plant vegetative growth and development. The progeny of plants relies on maternal photosynthesis, via food reserves in the seed, to supply the necessary energy for seed germination and early seedling establishment. Intriguingly, before seed maturation, Arabidopsis (Arabidopsis thaliana) embryos are also photosynthetically active, the biological significance of which remains poorly understood. Investigating this system is genetically challenging because mutations perturbing photosynthesis are expected to affect both embryonic and vegetative tissues. Here, we isolated a temperature-sensitive mutation affecting CPN60a2, which encodes a subunit of the chloroplast chaperonin complex CPN60. When exposed to cold temperatures, cpn60a2 mutants accumulate less chlorophyll in newly produced tissues, thus allowing the specific disturbance of embryonic photosynthesis. Analyses of cpn60a2 mutants were combined with independent genetic and pharmacological approaches to show that embryonic photosynthetic activity is necessary for normal skoto-and photomorphogenesis in juvenile seedlings as well as long-term adult plant development. Our results reveal the importance of embryonic photosynthetic activity for normal adult plant growth, development, and health. |
| Databáze: | OpenAIRE |
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