Temperature dependency of primary photochemistry

Introduction
Temperature dependency of primary photochemistryThe temperature response and thermal limits of physiological processes in plants gain increasing attention in the perspective of climatic warming. One of the most determinant plant physiological processes is photosynthesis, whose species specific temperature dependency and thermal limits play a key role in plant distribution and survival. The optimum temperature domains of photosynthetic gas exchange differ significantly between plant species and are initially determined by their geographical origin. Although many factors contribute to temperature acclimation of photosynthesis, one of the main targets of low or high temperature stress is the thylakoid membrane and, therefore, primary adaptive changes during acclimation occur at this level. While at a global scale high temperature limits of photosynthetic light reactions have been studied to some extent, the response with respect to optimum temperatures and low temperature limits of photosynthetic light reactions are only scarcely understood.

Research Questions

  • Low temperature limits and critical threshold temperatures for of plants from different biomes
  • Response of photosynthetic light reactions to ice formation in the mesophyll
  • Temperature optimum of photosynthetic light reactions of plants from different biomes
  • High temperature limits and critical threshold temperatures for photosynthetic light reactions of plants from different biomes

Funding
2009-2012 PhD scholarship Khon Khaen University, Thailand (PI: Gilbert NEUNER)

Personnel involved
Anoma Dongsansuk (PhD-student)
Gilbert NEUNER (Project leader)