en
Scientific article
Open access
English

Loss of algal Proton Gradient Regulation 5 increases reactive oxygen species scavenging and H2 evolution

Published inJournal of Integrative Plant Biology, vol. 58, no. 12, p. 943-946
Publication date2016
Abstract

We have identified hpm91, a Chlamydomonas mutant lacking Proton Gradient Regulation5 (PGR5) capable of producing hydrogen (H2 ) for 25 days with more than 30-fold yield increase compared to wild type. Thus, hpm91 displays a higher capacity of H2 production than a previously characterized pgr5 mutant. Physiological and biochemical characterization of hpm91 reveal that the prolonged H2 production is due to enhanced stability of PSII, which correlates with increased reactive oxygen species (ROS) scavenging capacity during sulfur deprivation. This anti-ROS response appears to protect the photosynthetic electron transport chain from photo-oxidative damage and thereby ensures electron supply to the hydrogenase.

Keywords
  • Algal Proteins/metabolism
  • Chlamydomonas/metabolism
  • Genetic Complementation Test
  • Hydrogen/metabolism
  • Photochemical Processes
  • Protons
  • Reactive Oxygen Species/metabolism
Citation (ISO format)
CHEN, Mei et al. Loss of algal Proton Gradient Regulation 5 increases reactive oxygen species scavenging and H<sub>2</sub> evolution. In: Journal of Integrative Plant Biology, 2016, vol. 58, n° 12, p. 943–946. doi: 10.1111/jipb.12502
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal1672-9072
352views
248downloads

Technical informations

Creation11/24/2018 6:38:00 PM
First validation11/24/2018 6:38:00 PM
Update time03/15/2023 1:55:00 PM
Status update03/15/2023 1:54:59 PM
Last indexation01/17/2024 4:14:49 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack