Sökning: onr:"swepub:oai:DiVA.org:umu-200859" >
The major trimeric ...
The major trimeric antenna complexes serve as a site for qH-energy dissipation in plants
-
- Bru, Pierrick (författare)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
-
- Steen, Collin J. (författare)
- Department of Chemistry, University of California, CA, Berkeley, United States; Molecular Biophysics and Integrated Bioimaging Division (Formerly Physical Biosciences Division), Lawrence Berkeley National Laboratory, CA, Berkeley, United States; Kavli Energy Nanoscience Institute, CA, Berkeley, United States
-
- Park, Soomin (författare)
- Department of Chemistry, University of California, CA, Berkeley, United States; Molecular Biophysics and Integrated Bioimaging Division (Formerly Physical Biosciences Division), Lawrence Berkeley National Laboratory, CA, Berkeley, United States; Kavli Energy Nanoscience Institute, CA, Berkeley, United States; School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, Chungnam, Cheonan, South Korea
-
visa fler...
-
- Amstutz, Cynthia L. (författare)
- Department of Plant and Microbial Biology, Howard Hughes Medical Institute, University of California, CA, Berkeley, United States
-
- Sylak-Glassman, Emily J. (författare)
- Department of Chemistry, University of California, CA, Berkeley, United States; Molecular Biophysics and Integrated Bioimaging Division (Formerly Physical Biosciences Division), Lawrence Berkeley National Laboratory, CA, Berkeley, United States
-
- Lam, Lam (författare)
- Molecular Biophysics and Integrated Bioimaging Division (Formerly Physical Biosciences Division), Lawrence Berkeley National Laboratory, CA, Berkeley, United States; Kavli Energy Nanoscience Institute, CA, Berkeley, United States; Graduate Group in Biophysics, University of California, CA, Berkeley, United States
-
- Fekete, Agnes (författare)
- Julius-von-Sachs-Institute, Biocenter, Pharmaceutical Biology, University of Wuerzburg, Wuerzburg, Germany
-
- Mueller, Martin J. (författare)
- Julius-von-Sachs-Institute, Biocenter, Pharmaceutical Biology, University of Wuerzburg, Wuerzburg, Germany
-
- Longoni, Fiamma (författare)
- Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
-
- Fleming, Graham R. (författare)
- Department of Chemistry, University of California, CA, Berkeley, United States; Molecular Biophysics and Integrated Bioimaging Division (Formerly Physical Biosciences Division), Lawrence Berkeley National Laboratory, CA, Berkeley, United States; Kavli Energy Nanoscience Institute, CA, Berkeley, United States; Graduate Group in Biophysics, University of California, CA, Berkeley, United States
-
- Niyogi, Krishna K. (författare)
- Molecular Biophysics and Integrated Bioimaging Division (Formerly Physical Biosciences Division), Lawrence Berkeley National Laboratory, CA, Berkeley, United States; Department of Plant and Microbial Biology, Howard Hughes Medical Institute, University of California, CA, Berkeley, United States
-
- Malnoë, Alizée (författare)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
-
visa färre...
-
(creator_code:org_t)
- American Society for Biochemistry and Molecular Biology Inc. 2022
- 2022
- Engelska.
-
Ingår i: Journal of Biological Chemistry. - : American Society for Biochemistry and Molecular Biology Inc.. - 0021-9258 .- 1083-351X. ; 298:11
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://umu.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Plants and algae are faced with a conundrum: harvesting sufficient light to drive their metabolic needs while dissipating light in excess to prevent photodamage, a process known as nonphotochemical quenching. A slowly relaxing form of energy dissipation, termed qH, is critical for plants’ survival under abiotic stress; however, qH location in the photosynthetic membrane is unresolved. Here, we tested whether we could isolate subcomplexes from plants in which qH was induced that would remain in an energy-dissipative state. Interestingly, we found that chlorophyll (Chl) fluorescence lifetimes were decreased by qH in isolated major trimeric antenna complexes, indicating that they serve as a site for qH-energy dissipation and providing a natively quenched complex with physiological relevance to natural conditions. Next, we monitored the changes in thylakoid pigment, protein, and lipid contents of antenna with active or inactive qH but did not detect any evident differences. Finally, we investigated whether specific subunits of the major antenna complexes were required for qH but found that qH was insensitive to trimer composition. Because we previously observed that qH can occur in the absence of specific xanthophylls, and no evident changes in pigments, proteins, or lipids were detected, we tentatively propose that the energy-dissipative state reported here may stem from Chl–Chl excitonic interaction.
Ämnesord
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
Nyckelord
- abiotic stress
- Arabidopsis thaliana
- CRISPR–Cas9
- energy dissipation
- light-harvesting complexes
- nonphotochemical quenching qH
- photosynthesis
- time-resolved fluorescence
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Bru, Pierrick
-
Steen, Collin J.
-
Park, Soomin
-
Amstutz, Cynthia ...
-
Sylak-Glassman, ...
-
Lam, Lam
-
visa fler...
-
Fekete, Agnes
-
Mueller, Martin ...
-
Longoni, Fiamma
-
Fleming, Graham ...
-
Niyogi, Krishna ...
-
Malnoë, Alizée
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Biologi
-
och Biokemi och mole ...
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Biologi
-
och Botanik
- Artiklar i publikationen
-
Journal of Biolo ...
- Av lärosätet
-
Umeå universitet