Interest in the thermal acclimation of photosynthesis has been stimulated by the increasing relevance of climate change. However, little is known about intra-specific variations in thermal acclimation and its potential for breeding. In a recent study published in AoB PLANTS, Zaka et al. analysed intra-specific variations in the thermal acclimation of photosynthesis in a perennial herbaceous crop (alfalfa – Medicago sativa) by comparing cultivars from contrasting origins grown under a range of temperatures. It was concluded that both temperate and Mediterranean cultivars display strong patterns of thermal acclimation in the 5–40°C range. There was no evidence of superior performance by Mediterranean genotypes at high temperatures.
Serge Zaka, Ela Frak, Bernadette Julier, François Gastal, Gaëtan Louarn, 2016, 'Intraspecific variation in thermal acclimation of photosynthesis across a range of temperatures in a perennial crop', AoB Plants, vol. 8, p. plw035 http://dx.doi.org/10.1093/aobpla/plw035