Trees

, Volume 12, Issue 3, pp 167–174

Photosynthesis of mistletoes in relation to their hosts at various sites in tropical Brazil

  • U. Lüttge
  • Mundayatan Haridasan
  • Geraldo W. Fernandes
  • Eduardo A. de Mattos
  • Peter Trimborn
  • Augusto C. Franco
  • Linda S. Caldas
  • Hubert Ziegler
ORIGINAL ARTICLE

Abstract

 Chlorophyll a fluorescence parameters showing the instantaneous performance and carbon-isotope ratios reflecting long-term behaviour of leaves were determined for a large number of mistletoe/host-pairs in the cerrado belt of Brazil. Study sites were a very exposed rupestrian field, a semi-exposed savanna and a highly shaded gallery forest. The major question asked was if photosynthetic capacity of mistletoe leaves differed from that of the leaves of their respective hosts. It is shown that except for the very exposed rupestrian field site, photosynthetic capacity appeared to be similar in mistletoes and host leaves. The superior behaviour of host leaves in the rupestrian field was due to particularly expressed sun-plant characteristics of the host. However, mistletoes always had higher average stomatal conductances, lower leaf temperatures at similar or even higher irradiance and higher intercellular CO2-partial pressures than hosts. Photosynthetic performance of mistletoe leaves was independent of whether a given mistletoe species parasitized aluminium-accumulating or non-accumulating host species in the cerrados with their aluminium-rich soils.

Key words Aluminium Carbon isotope ratios Cerrado Chlorophyll fluorescence Mistletoes 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • U. Lüttge
    • 1
  • Mundayatan Haridasan
    • 2
  • Geraldo W. Fernandes
    • 3
  • Eduardo A. de Mattos
    • 4
  • Peter Trimborn
    • 5
  • Augusto C. Franco
    • 2
  • Linda S. Caldas
    • 2
  • Hubert Ziegler
    • 6
  1. 1.Institut für Botanik, Technische Universität Darmstadt, Schnittspahnstrasse 3–5, D-64287 Darmstadt, GermanyDE
  2. 2.Departamentos de Ecologia and de Botânica, Instituto de Ciencias Biologicas Universidade de Brasília, caixa postal 04457, Brasília, DF 70919-970, BrazilBR
  3. 3.Departamento de Biologia Geral, ICB/Universidade Federal de Minas Gerais, caixa postal 486, 30161-970 Belo Horizonte, MG, BrazilBR
  4. 4.Departamento de Botânica, Instituto de Biologia, Universidade Estadual de Campinas, caixa postal 6109, Campinas-SP, CEP 13081-970, BrazilBR
  5. 5.Institute of Hydrology, GSF, Forschungszentrum für Umwelt und Gesundheit, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, GermanyDE
  6. 6.Institut für Botanik und Mikrobiologie, Technische Universität München, Arcisstrasse 21, D-80333 Munich, GermanyDE

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