IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v11y2020i1d10.1038_s41467-020-19800-y.html
   My bibliography  Save this article

The role of mixed vibronic Qy-Qx states in green light absorption of light-harvesting complex II

Author

Listed:
  • Eric A. Arsenault

    (University of California
    Kavli Energy Nanoscience Institute at Berkeley
    Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory)

  • Yusuke Yoneda

    (University of California
    Kavli Energy Nanoscience Institute at Berkeley
    Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory)

  • Masakazu Iwai

    (Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory
    University of California)

  • Krishna K. Niyogi

    (Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory
    University of California
    University of California)

  • Graham R. Fleming

    (University of California
    Kavli Energy Nanoscience Institute at Berkeley
    Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory)

Abstract

The importance of green light for driving natural photosynthesis has long been underappreciated, however, under the presence of strong illumination, green light actually drives photosynthesis more efficiently than red light. This green light is absorbed by mixed vibronic Qy-Qx states, arising from chlorophyll (Chl)-Chl interactions, although almost nothing is known about these states. Here, we employ polarization-dependent two-dimensional electronic-vibrational spectroscopy to study the origin and dynamics of the mixed vibronic Qy-Qx states of light-harvesting complex II. We show the states in this region dominantly arise from Chl b and demonstrate how it is possible to distinguish between the degree of vibronic Qy versus Qx character. We find that the dynamics for states of predominately Chl b Qy versus Chl b Qx character are markedly different, as excitation persists for significantly longer in the Qx states and there is an oscillatory component to the Qx dynamics, which is discussed. Our findings demonstrate the central role of electronic-nuclear mixing in efficient light-harvesting and the different functionalities of Chl a and Chl b.

Suggested Citation

  • Eric A. Arsenault & Yusuke Yoneda & Masakazu Iwai & Krishna K. Niyogi & Graham R. Fleming, 2020. "The role of mixed vibronic Qy-Qx states in green light absorption of light-harvesting complex II," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19800-y
    DOI: 10.1038/s41467-020-19800-y
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-020-19800-y
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-020-19800-y?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Yusuke Yoneda & Eric A. Arsenault & Shiun-Jr Yang & Kaydren Orcutt & Masakazu Iwai & Graham R. Fleming, 2022. "The initial charge separation step in oxygenic photosynthesis," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Vishal Kumar Jaiswal & Daniel Aranda Ruiz & Vasilis Petropoulos & Piotr Kabaciński & Francesco Montorsi & Lorenzo Uboldi & Simone Ugolini & Shaul Mukamel & Giulio Cerullo & Marco Garavelli & Fabrizio , 2024. "Sub-100-fs energy transfer in coenzyme NADH is a coherent process assisted by a charge-transfer state," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19800-y. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.