How does temperature affect the rate of respiration in a plant?

Does Temperature Affect Cellular Respiration (http://www.biotopics.co.uk/humans/respro.html)?

Within limits, rates of photosynthesis and respiration both rise with increasing temperatures.

http://www.ext.colostate.edu/pubs/garden/07712.html#temp

higher temperature=enzymes work at opitmum level
lower temperature=enzymes function at slower rate

too high temperature=denaturation, or change in structure, of the enzyme occurs.