Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts
Plants grown in the field experience sharp changes in irradiation due to shading effects caused by clouds, other leaves, etc. The excess of absorbed light energy is dissipated by a number of mechanisms including cyclic electron transport, photorespiration, and Mehler-type reactions. This protection...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01668595_v136_n2_p129_Gomez http://hdl.handle.net/20.500.12110/paper_01668595_v136_n2_p129_Gomez |
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paper:paper_01668595_v136_n2_p129_Gomez2023-06-08T15:16:10Z Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts Alternative electron transport Dark–light transitions Flavodiiron proteins Non-photochemical quenching Photosynthesis Photosynthetic efficiency antimycin A1 bacterial protein multienzyme complex chloroplast drug effect electron transport genetics metabolism photosynthesis physiology Synechocystis tobacco transgenic plant Antimycin A Bacterial Proteins Chloroplasts Electron Transport Electron Transport Chain Complex Proteins Photosynthesis Plants, Genetically Modified Synechocystis Tobacco Plants grown in the field experience sharp changes in irradiation due to shading effects caused by clouds, other leaves, etc. The excess of absorbed light energy is dissipated by a number of mechanisms including cyclic electron transport, photorespiration, and Mehler-type reactions. This protection is essential for survival but decreases photosynthetic efficiency. All phototrophs except angiosperms harbor flavodiiron proteins (Flvs) which relieve the excess of excitation energy on the photosynthetic electron transport chain by reducing oxygen directly to water. Introduction of cyanobacterial Flv1/Flv3 in tobacco chloroplasts resulted in transgenic plants that showed similar photosynthetic performance under steady-state illumination, but displayed faster recovery of various photosynthetic parameters, including electron transport and non-photochemical quenching during dark–light transitions. They also kept the electron transport chain in a more oxidized state and enhanced the proton motive force of dark-adapted leaves. The results indicate that, by acting as electron sinks during light transitions, Flvs contribute to increase photosynthesis protection and efficiency under changing environmental conditions as those found by plants in the field. © 2017, Springer Science+Business Media B.V. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01668595_v136_n2_p129_Gomez http://hdl.handle.net/20.500.12110/paper_01668595_v136_n2_p129_Gomez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Alternative electron transport Dark–light transitions Flavodiiron proteins Non-photochemical quenching Photosynthesis Photosynthetic efficiency antimycin A1 bacterial protein multienzyme complex chloroplast drug effect electron transport genetics metabolism photosynthesis physiology Synechocystis tobacco transgenic plant Antimycin A Bacterial Proteins Chloroplasts Electron Transport Electron Transport Chain Complex Proteins Photosynthesis Plants, Genetically Modified Synechocystis Tobacco |
| spellingShingle |
Alternative electron transport Dark–light transitions Flavodiiron proteins Non-photochemical quenching Photosynthesis Photosynthetic efficiency antimycin A1 bacterial protein multienzyme complex chloroplast drug effect electron transport genetics metabolism photosynthesis physiology Synechocystis tobacco transgenic plant Antimycin A Bacterial Proteins Chloroplasts Electron Transport Electron Transport Chain Complex Proteins Photosynthesis Plants, Genetically Modified Synechocystis Tobacco Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| topic_facet |
Alternative electron transport Dark–light transitions Flavodiiron proteins Non-photochemical quenching Photosynthesis Photosynthetic efficiency antimycin A1 bacterial protein multienzyme complex chloroplast drug effect electron transport genetics metabolism photosynthesis physiology Synechocystis tobacco transgenic plant Antimycin A Bacterial Proteins Chloroplasts Electron Transport Electron Transport Chain Complex Proteins Photosynthesis Plants, Genetically Modified Synechocystis Tobacco |
| description |
Plants grown in the field experience sharp changes in irradiation due to shading effects caused by clouds, other leaves, etc. The excess of absorbed light energy is dissipated by a number of mechanisms including cyclic electron transport, photorespiration, and Mehler-type reactions. This protection is essential for survival but decreases photosynthetic efficiency. All phototrophs except angiosperms harbor flavodiiron proteins (Flvs) which relieve the excess of excitation energy on the photosynthetic electron transport chain by reducing oxygen directly to water. Introduction of cyanobacterial Flv1/Flv3 in tobacco chloroplasts resulted in transgenic plants that showed similar photosynthetic performance under steady-state illumination, but displayed faster recovery of various photosynthetic parameters, including electron transport and non-photochemical quenching during dark–light transitions. They also kept the electron transport chain in a more oxidized state and enhanced the proton motive force of dark-adapted leaves. The results indicate that, by acting as electron sinks during light transitions, Flvs contribute to increase photosynthesis protection and efficiency under changing environmental conditions as those found by plants in the field. © 2017, Springer Science+Business Media B.V. |
| title |
Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| title_short |
Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| title_full |
Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| title_fullStr |
Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| title_full_unstemmed |
Faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| title_sort |
faster photosynthetic induction in tobacco by expressing cyanobacterial flavodiiron proteins in chloroplasts |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01668595_v136_n2_p129_Gomez http://hdl.handle.net/20.500.12110/paper_01668595_v136_n2_p129_Gomez |
| _version_ |
1768542641575690240 |