, Volume 50, Issue 3, pp 477–480 | Cite as

Is the rate of photosynthesis under blue light altered in the 7B-1 tomato mutant?

  • E. Ježilová
  • M. Fellner
  • V. Bergougnoux
  • M. Špundová
Brief Communication


Changes of photosynthesis under blue light were examined in the ABA-overproducing 7B-1 mutant in tomato. Net photosynthetic rate (P N), stomatal conductance (g s), intrinsic water-use efficiency (WUEi) and chlorophyll (a+b) [Chl (a+b)] content in leaves of different insertion (1st, 4th and 9th ones) were measured in 5-, 7- and 9-week-old plants. P N, g s, and Chl (a+b) content were mostly similar in young leaves of 7B-1 and wild type (WT) plants. With the aging of leaves, a blue-light-induced increase in P N and g s to steady-state was delayed and steady-state values of P N and g s were lower in 7B-1 plants compared with WT. Steady-state values of WUEi were increased in 4th and 9th leaves of 7B-1 plants compared with WT. The results can be explained by the higher endogenous level of ABA in 7B-1 plants and their lower sensitivity to ABA in earlier growth stage.

Additional key words

ABA-overproducer chlorophyll content net photosynthetic rate Solanum lycopersicum stomatal conductance tomato mutant 



abscisic acid




stomatal conductance


net photosynthetic rate


wild type


intrinsic water-use efficiency


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • E. Ježilová
    • 1
  • M. Fellner
    • 2
  • V. Bergougnoux
    • 2
    • 3
  • M. Špundová
    • 1
  1. 1.Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Biophysics, Faculty of SciencePalacký UniversityOlomoucCzech Republic
  2. 2.Group of Molecular Physiology, Laboratory of Growth RegulatorsPalacký University & Institute of Experimental Botany ASCROlomoucCzech Republic
  3. 3.Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Molecular Biology, Faculty of SciencePalacký UniversityOlomoucCzech Republic

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