PXD040798-1

PXD040798 is an original dataset announced via ProteomeXchange.

Title	Variation of the Photosynthesis and Respiration Response of Filamentous Algae (Oedogonium) Acclimated to Seasonal Conditions
Description	Filamentous algae (FA) have potential advantages over microalgae for wastewater treatment. However, their implementation at large-scale is hindered by an inability to predict performance. This study compared the cellular responses (photosynthesis and respiration) and composition (pigments and photosystem proteins) of FA Oedogonium acclimatised to average summer and winter conditions (Melbourne, Australia). After 7 days of acclimation the Chl a content of summer acclimated (SA) algae was about half that of the winter acclimated (WA) algae, which can be related to a strategy to reduce photodamage under high light intensities. No statistically significant changes were observed in any identified proteins associated with photosystem PSII and the reaction centre of PSI. Transmission electron microscopy images revealed more prominent lipid bodies within the SA filaments than in WA filaments, but no discernible difference in the abundance of starch granules. Photosynthetic irradiance curves were compared for the SA and WA algae. Consistent with the differences in chlorophyll, the specific gross photosynthetic rate (µP, gross) was generally higher for the WA algae. The relative difference increased from around 2-fold at 15°C to 3-fold at 25°C, and then decreased to less than 1.5-fold at 30 °C and 35 °C. At all the tested temperatures, saturation irradiance levels were in the range of 75 – 500 µmol/m2·s. Photoinhibition was observed at 30 °C (above ~300 µmol/m2·s) and was more severe at 35 °C (above ~500 µmol/m2·s), with WA algae showing greater inhibition. In contrast, the respiration response was similar for the SA and WA algae. The study emphasises the significance of accounting for seasonal variations and their effects on biomass productivity and utilisation. The data obtained will enable the incorporation of acclimation and its effect on biochemistry and photosynthetic response into predictive models of FA performance in outdoor cultures.
HostingRepository	PRIDE
AnnounceDate	2026-01-12
AnnouncementXML	Submission_2026-01-11_19:39:44.108.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Joel Steele
SpeciesList	scientific name: Oedogonium; NCBI TaxID: NEWT:55993;
ModificationList	acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Orbitrap Fusion

Revision	Datetime	Status	ChangeLog Entry
0	2023-03-12 21:39:41	ID requested
⏵ 1	2026-01-11 19:39:44	announced

10.1016/J.ALGAL.2023.103213;

submitter keyword: Filamentous algae

photosynthesis

seasonal acclimation

wastewater treatment.

GJ Martin
contact affiliation	Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
contact email	gjmartin@unimelb.edu.au
lab head
Joel Steele
contact affiliation	Monash
contact email	joel.steele@monash.edu
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD040798
     1. Label: PRIDE project
     2. Name: Variation of the Photosynthesis and Respiration Response of Filamentous Algae (Oedogonium) Acclimated to Seasonal Conditions