title: Acclimation of whole-plant Acacia farnesiana transpiration to carbon dioxide concentration.
abstract: Transpiration per unit leaf area of Acacia farnesiana (L.) Willd. plants grown at a CO2 concentration ([CO2]) of 385 micromol x mol(-1) was about twice that of plants grown at 980 micromol x mol(-1). However, whes plants grown for more than a year at 980 micromol x mol(-1) were exposed to 380 micromol x mol(-1) for 9 days, they transpired at half the rate of those that had been grown at 380 micromol x mol(-1)1. Similarly, plants grown at 380 micromol x mol(-1), when exposed to 980 micromol x mol(-1), transpired at twice the rate of those grown at 980 micromol x mol(-1). Thus, the effects of elevated [CO2] on whole-plant transpiration, like those on photosynthesis, respiration and stomatal conductance, cannot reliably be extrapolated from measurements made during short-term exposure to elevated [CO2].
authors.affiliation: Blackland Research and Extension Center, Texas Agricultural Experiment Station, 720 E. Blackland Road, Temple, TX 76502, USA.
authors.forename: W A
authors.initials: WA
authors.lastname: Dugas
authors.forename: H W
authors.initials: HW
authors.lastname: Polley
authors.forename: H S
authors.initials: HS
authors.lastname: Mayeux
authors.forename: H B
authors.initials: HB
authors.lastname: Johnson
mesh_terms: D000045:Acacia / Q000502:physiology*; D002245:Carbon Dioxide / Q000502:physiology*; D018515:Plant Leaves / Q000502:physiology; D018526:Plant Transpiration / Q000187:drug effects* / Q000502:physiology; D014197:Trees / Q000502:physiology*
chemical_list: D002245:Carbon Dioxide