Reactive oxygen species mediate thylakoid membrane remodeling and triacylglycerol synthesis under nitrogen starvation in the alga Chlorella sorokiniana
Vijayan, J.; Wase, N.; Liu, K.; Zhang, C.; Riekhof, W. R.
Show abstract
Many microbes accumulate energy storage molecules such as triglycerides and starch during nutrient limitation. In eukaryotic green algae grown under nitrogen limiting conditions, triglyceride accumulation is coupled with chlorosis and growth arrest. In this study we show that accumulation of reactive oxygen species (ROS) under nitrogen limitation in the microalga Chlorella sorokiniana is involved in thylakoid membrane remodeling, leading to chlorosis. We show that ROS accumulation under nitrogen limitation is an active process involving downregulation of expression of ROS-quenching enzymes, such as superoxide dismutases, catalase, peroxiredoxin, and glutathione peroxidase-like, and upregulation of enzymes involved in generating ROS, such as NADPH oxidase, xanthine oxidase and amine oxidases. Expression of enzymes involved in ascorbate and glutathione metabolism are also affected under these conditions. Quenching ROS under nitrogen limitation reduces TAG accumulation, adding additional evidence for the role of ROS signaling in the process.
Matching journals
The top 12 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- An algal nutrient-replete, optimized medium for fast growth and high triacylglycerol accumulation 94%
- The effect of constitutive root isoprene emission on root phenotype and physiology under control and salt stress conditions 94%
- SNRK3.15 is a crucial component of the sulfur deprivation response in Arabidopsis thaliana 93%
Similar papers in this journal
- Acclimation of Chlamydomonas reinhardtii to Nitric Oxide Stress Related to Respiratory Burst Oxidase-Like 2 97%
- Light-dark dependent rhythmic changes in chloroplast and mitochondrial activity in Chlamydomonas reinhardtii 95%
- Providing an additional electron sink by the introduction of cyanobacterial flavodiirons enhances the growth of Arabidopsis thaliana in varying light 94%
Similar papers in this journal
Similar papers in this journal
- Fatty acid photodecarboxylase is an ancient photoenzyme responsible for hydrocarbon formation in the thylakoid membranes of algae 95%
- Ascorbate deficiency does not limit non-photochemical quenching in Chlamydomonas reinhardtii 95%
- Both major xanthophyll cycles present in nature can provide Non-Photochemical Quenching in the model diatom Phaeodactylum tricornutum 94%
Similar papers in this journal
- Flv3A facilitates O2 photoreduction and affects H2 photoproduction independently of Flv1A in diazotrophic Anabaena filaments 96%
- ppGpp influences protein protection, growth and photosynthesis in Phaeodactylum tricornutum 96%
- Gene expression analysis of Cyanophora paradoxa reveals conserved abiotic stress responses between basal algae and flowering plants 95%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.