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1990 (1)
1Author    Jack Dekker, RonaldG. BurmesterRequires cookie*
 Title    Differential Pleiotropy in a psbA Gene Mutant of Brassica napus Implies Altered Temporal Photosynthesis and Thermal Tolerance  
 Abstract    Studies were conducted to test the hypothesis that the mutation to the psbA. plastid gene that confers s-triazine resistance (R) also results in an altered diurnal pattern o f photosynthetic car­ bon reduction (CER) relative to that o f the susceptible (S) wild-type. In all experiments CER approximated the increasing and decreasing light levels during the diurnal. S C ER exceeded that o f R during the midday period, but R CER was greater early and late in the diurnal at 25 °C. R CER exceeded that o f S for most o f the diurnal at 35 °C and in older, crowded, nitrogen-starved plants. These studies support the stated hypothesis and indicate a more complex model o f photosynthetic productivity than previously observed. An assessment o f the photosynthetic competence o f either biotype may be a function o f the time o f day or the environmental condi­ tions the plants are exposed to, especially temperature. 
  Reference    Z. Naturforsch. 45c, 474 (1990); received October 18 1989 
  Published    1990 
  Keywords    Photosystem II, D -l Protein, Electron Transport, C hronobiology, Diurnal Rhythms 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0474.pdf 
 Identifier    ZNC-1990-45c-0474 
 Volume    45