Water relations and alleviation of drought stress in mycorrhizal plants

  • M. Sánchez-Díaz
  • M. Honrubia

Abstract

Changes in water relations and increased mineral uptake have been the two major reported effects of arbuscular mycorrhizal infection on host plants (Cooper, 1984; Safir, 1987). Some authors have suggested that mycorrhizas may be even more important to plant growth under dry conditions than when soil moisture is plentiful (Allen and Allen, 1986; Nelsen, 1987; Sánchez-Díaz et al., 1990). However, the mechanisms whereby mycorrhizas may increase host drought resistance have not been elucidated. One problem is to distinguish between nutritional advantages and those conferred by improved water uptake. Another important cosideration is that mechanisms which contribute to improved plant water and nutritional status, do not necessarily increase drought tolerance (Nelsen, 1987).

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Copyright information

© Springer Basel AG 1994

Authors and Affiliations

  • M. Sánchez-Díaz
    • 1
  • M. Honrubia
    • 2
  1. 1.Departamento de Fisiología VegetalUniversidad de NavarraPamplonaSpain
  2. 2.Departamento de Biología Vegetal, Laboratorio de Micología, Facultad de Biología, Campus de EspinardoUniversidad de MurciaMurciaSpain

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