
%0 Journal Article
%A Clark, RJ 
%A Menary, RC 
%T Environmental Effects on Peppermint (<I>Mentha piperita</I> L.). II. Effects of Temperature on Photosynthesis, Photorespiration and Dark Respiration in Peppermint With Reference to Oil Composition
%J Functional Plant Biology
%D 1980/12/01
%V 7
%N 6
%P 693-697
%K 
%R https://doi.org/10.1071/PP9800693
%U https://www.publish.csiro.au/paper/PP9800693 
%X Net CO2 exchange was investigated at several photon flux densities and day temperatures in both 21% and 2% O2. Light saturation occurred between 400 and 500 µEm-2, s-1 in attached, fully expanded leaves of peppermint. Maximum rates of 'apparent' photosynthesis occurred at 20&#176;C. The important determinants of 'apparent' photosynthesis were an increase in 'true' photosynthesis when temperature was increased to 25&#176;C, a steady increase in dark respiration with increased temperature and a rapid increase in photorespiration between 15 and 30&#176;C. Such net CO2 exchange characteristics of peppermint support the photosynthate model proposed to explain environmental effects on oil composition. 
