title: Temperature acclimation of photosynthesis: mechanisms involved in the changes in temperature dependence of photosynthetic rate.
abstract: Growth temperature alters temperature dependence of the photosynthetic rate (temperature acclimation). In many species, the optimal temperature that maximizes the photosynthetic rate increases with increasing growth temperature. In this minireview, mechanisms involved in changes in the photosynthesis-temperature curve are discussed. Based on the biochemical model of photosynthesis, change in the photosynthesis-temperature curve is attributable to four factors: intercellular CO2 concentration, activation energy of the maximum rate of RuBP (ribulose-1,5-bisphosphate) carboxylation (Vc max), activation energy of the rate of RuBP regeneration (Jmax), and the ratio of Jmax to Vc max. In the survey, every species increased the activation energy of Vc max with increasing growth temperature. Other factors changed with growth temperature, but their responses were different among species. Among these factors, activation energy of Vc max may be the most important for the shift of optimal temperature of photosynthesis at ambient CO2 concentrations. Physiological and biochemical causes for the change in these parameters are discussed.
authors.affiliation: Graduate School of Life Sciences, Tohoku University, Sendai 980-8578, Japan. hikosaka@mail.tains.tohoku.ac.jp
authors.forename: Kouki
authors.initials: K
authors.lastname: Hikosaka
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Ishikawa
authors.forename: Almaz
authors.initials: A
authors.lastname: Borjigidai
authors.forename: Onno
authors.initials: O
authors.lastname: Muller
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Onoda
mesh_terms: D000064:Acclimatization; D002245:Carbon Dioxide / Q000378:metabolism; D017752:Greenhouse Effect; D007700:Kinetics; D009584:Nitrogen / Q000378:metabolism; D010788:Photosynthesis; D018515:Plant Leaves / Q000166:cytology / Q000254:growth & development / Q000502:physiology*; D018521:Plant Physiological Phenomena; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism; D012274:Ribulosephosphates / Q000378:metabolism; D013696:Temperature
chemical_list: D012274:Ribulosephosphates; D002245:Carbon Dioxide; D012273:Ribulose-Bisphosphate Carboxylase; D009584:Nitrogen