News & events
News
Scientists at the Australian Research Council (ARC) ARC Centre of Excellence for Translational Photosynthesis (CoETP) have found that some plants have ten times more communication channels inside their leaves than other plants, which they think is a crucial factor in determining photosynthetic efficiency.
ANU congratulates distinguished scientist and ANU Professor Graham Farquhar AO for being named the 2018 Senior Australian of the Year.
Photosynthesis is an essential biological process that depends on the activity of the enzyme Rubisco which catalyses carbon fixation. Rubisco is slow, inefficient and cannot accurately distinguish between CO2 and O2. ANU researchers have been trying to improve the efficiency of Rubisco in crop plants.
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.
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.
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.
Events
C4 photosynthesis, a carbon concentrating mechanism, evolved as an adaptation to improve photosynthetic CO2 assimilation in terrestrial plants under conditions of low CO2, increased temperatures and varying rainfall patterns.
Cell-to-cell communication is essential for the co-ordination of responses in all multicellular organisms. One mechanism plants employ as defence against pathogens is restriction of cell-to-cell communication by plasmodesmata closure during infection.
In plants, microRNAs (miRNAs) are short non-coding RNAs of approximately 20-24 nt in length which are involved in post-transcriptional regulation of genes controlling many fundamental biological pathways.
Specialised metabolites are one of the major means of how microbes and sessile organisms express extended phenotype for the selective advantage of the organisms —or, more fundamentally, their genes.
Natural capital describes the stocks of renewable and non-renewable resources (e.g. plants, animals, air, water, soils and minerals) that produce flows of benefits to people.
Source-to-sink allocation of, and sink-to-sink competition for, photoassimilates, mainly in the form of sucrose, play a key role in determining energy and resource distribution in plants for growth and reproduction.