Monday 21 October 2019, 2:00pm to 3:00pm
VenueTraining Room 1, Ground Floor, Gordon Manley Building, LEC Blue Zone (LEC 3), Lancaster University - View Map
Open toPostgraduates, Staff, Undergraduates
RegistrationRegistration not required - just turn up
Photorespiration in the context of metabolism and anatomy
Photorespiration is one of the most important biochemical pathways in nature – after photosynthesis – and is a major target for bioengineering to improve crop yield. It is often considered wasteful and something that may be improved. Photorespiration, however, is connected to various other metabolic pathways that draw metabolites from the photorespiratory pathway, such as the nitrogen metabolism. Here I outline how photorespiration can improve photosynthetic performance of plants despite decreasing the efficiency of Rubisco carboxylation.Assessing its impact on carbon fixation requires an accurate measurement of photorespiration. The standard method for quantification involves estimating the chloroplastic CO2 concentration using stable isotope techniques with the Farquhar, O'Leary and Berry model. Unfortunately, this model does not well represent respiratory biochemistry. I will describe a new model that is suitable to assess fundamental diffusion properties inside the leaf affecting photorespiration.
My main interest relates to photosynthetic processes in plants, ranging from light absorption and photosynthetic electron transport to the diffusion and assimilation of CO2 inside the leaf. I am interested in how different photosynthetic processes interact and which of these processes is limiting the rate of CO2 uptake and therefore the growth of the plant. I use mathematical modelling as a tool to describe the plant’s responses to changes in their environmental conditions, and to generate hypot
|Name||Dr Samuel Taylor|