News & events

Photosynthesis and Gas Exchange

The investigations into carbon fixation and gas exchange by RSBS researchers were essential to the understanding of photosynthesis, and the development of new processes to increase the efficiency of the photosynthetic process in agriculture. 
Architectural representation of a carboxysome on the windows of the RSB Linnaeus building


Carboxysomes are polyhedral protein micro-compartments in cyanobacteria which concentrate CO2 and increase the efficiency of carbon fixation. In 1993, RSBS researchers Dean Price, Murray Badger and Susan Howitt determined the genetic sequence encoding for the proteins that form the protein shell of a carboxysome.

Nodulation in legumes

Legumes are an interesting plant to study due to their symbiotic relationship with nitrogen fixing bacteria called Rhizobia, which are housed within specialised root structures called nodules. The work of ANU researchers has been very important for our understanding of symbiosis, nodule formation and nitrogen fixation.


PS Seminar Series - Turning up the heat: How will climate change affect forests and crops?

12pm 6 Apr 2023
Rising atmospheric CO2 concentrations could reach >1000 ppm by 2100, increasing global temperatures 3-4 °C. Both elevated CO2 and warming affect photosynthesis, altering plant growth, survival, and crop yield and quality.