Non-photochemical quenching

Non-photochemical quenching is a protective mechanism that plants employ to dissipate excess light energy. Plants often absorb more light energy than they can process in photosynthesis, and the quenching of singlet excited chlorophylls - non-photochemical quenching - leads to the harmless dissipation of this excess energy as heat.

Latest Research and Reviews

  • Research |

    An algal TET dioxygenase homologue, CMD1, uses vitamin C as a glycerol donor to modify 5-methylcytosine and helps to regulate gene transcription in response to high light levels.

    • Jian-Huang Xue
    • , Guo-Dong Chen
    • , Fuhua Hao
    • , Hui Chen
    • , Zhaoyuan Fang
    • , Fang-Fang Chen
    • , Bo Pang
    • , Qing-Lin Yang
    • , Xinben Wei
    • , Qiang-Qiang Fan
    • , Changpeng Xin
    • , Jiaohong Zhao
    • , Xuan Deng
    • , Bang-An Wang
    • , Xiao-Jie Zhang
    • , Yueying Chu
    • , Hui Tang
    • , Huiyong Yin
    • , Weimin Ma
    • , Luonan Chen
    • , Jianping Ding
    • , Elmar Weinhold
    • , Rahul M. Kohli
    • , Wen Liu
    • , Zheng-Jiang Zhu
    • , Kaiyao Huang
    • , Huiru Tang
    •  & Guo-Liang Xu
    Nature 569, 581-585
  • Research | | open

    Cyanobacterial photoprotection is controlled by OCP and FRP proteins, but their dynamic interplay is not fully understood. Here, the authors combine protein engineering, disulfide trapping and structural analyses to provide mechanistic insights into the transient OCP-FRP interaction.

    • Nikolai N. Sluchanko
    • , Yury B. Slonimskiy
    • , Evgeny A. Shirshin
    • , Marcus Moldenhauer
    • , Thomas Friedrich
    •  & Eugene G. Maksimov
  • Research |

    Photosystem II is protected against light damage by thermal dissipation of excess energy. Picosecond fluorescence spectroscopy uncovers a mechanism that is only functional when the reaction centre is closed, that is, when the risk of photodamage is high.

    • Shazia Farooq
    • , Jevgenij Chmeliov
    • , Emilie Wientjes
    • , Rob Koehorst
    • , Arjen Bader
    • , Leonas Valkunas
    • , Gediminas Trinkunas
    •  & Herbert van Amerongen
    Nature Plants 4, 225-231
  • Research | | open

    Stella Hubbart et al. show that over-expression of the photoprotective protein gene psbS leads to enhanced canopy-level radiation use efficiency and grain yield in rice. The results demonstrate that alterations to photoprotection and light-harvesting processes could be used to improve yield in rice crops.

    • Stella Hubbart
    • , Ian R. A. Smillie
    • , Matthew Heatley
    • , Ranjan Swarup
    • , Chuan Ching Foo
    • , Liang Zhao
    •  & Erik H. Murchie
  • Research | | open

    Availability of irrigation water will be an increasing barrier to global crop yield increases. Here the authors show transgenic tobacco plants overexpressing Photosystem II Subunit S have less stomatal opening in response to light and a 25% reduction in water loss per CO2 assimilated under replicated field trials.

    • Katarzyna Głowacka
    • , Johannes Kromdijk
    • , Katherine Kucera
    • , Jiayang Xie
    • , Amanda P. Cavanagh
    • , Lauriebeth Leonelli
    • , Andrew D. B. Leakey
    • , Donald R. Ort
    • , Krishna K. Niyogi
    •  & Stephen P. Long

News and Comment

  • News and Views |

    Ascorbate is synthesized in mitochondria but needed in chloroplasts. Identification of a transporter bridging the chloroplast envelope membranes that separate cell cytoplasm from chloroplast stroma reveals a connection between ascorbate transport and cellular redox homeostasis.

    • Christine H. Foyer
    Nature Plants 1, 14012