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Oecologia

, Volume 134, Issue 2, pp 167–175 | Cite as

Compensation for herbivory by Cucumis sativus through increased photosynthetic capacity and efficiency

  • Vivien P. Thomson
  • Saul A. Cunningham
  • Marilyn C. Ball
  • Adrienne B. Nicotra
Ecophysiology

Abstract.

Herbivory is an important selective pressure in the life history of most plant species, as it usually results in reduced plant fitness. In some situations, however, plants are able to compensate for the resources lost to herbivory and do not suffer any reduction in growth or reproduction after attack. We examined the ability of Lebanese cucumber (Cucumis sativus) to compensate for both pre-flowering and during-flowering foliar herbivory through increased photosynthetic efficiency and capacity. Plants that were damaged before flowering were able to compensate, in terms of vegetative biomass and fruit production for up to 80% leaf area loss. Plants that were damaged during the flowering period were less able to compensate and fruit production declined with increasing herbivory. Damaged plants had higher photosynthetic efficiency and capacity, and dissipated less light energy as heat. Herbivore-damaged plants may be induced to use a greater proportion of the absorbed light energy for photosynthesis as a result of altered carbohydrate source-sink relationships.

Chlorophyll fluorescence Plant–animal interactions Source-sink dynamics Light use efficiency Photosynthesis 

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Vivien P. Thomson
    • 1
  • Saul A. Cunningham
    • 2
  • Marilyn C. Ball
    • 3
  • Adrienne B. Nicotra
    • 1
  1. 1.Botany and Zoology, Australian National University, Canberra, ACT 0200, Australia
  2. 2.CSIRO Entomology, GPO Box 1700, Canberra, ACT 2601, Australia
  3. 3.Research School of Biological Sciences, Australian National University, Canberra, ACT 0200, Australia

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