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Biologia Plantarum

, 48:317 | Cite as

Sucrose Metabolism in Lupinus albus L. Under Salt Stress

  • F.M. FernandesEmail author
  • M.C. Arrabaça
  • L.M.M. Carvalho
Article

Abstract

Salt stress (50 and 150 mM NaCl) effects on sucrose metabolism was determined in Lupinus albus L. Sucrose synthase (SS) activity increased under salt stress and sucrose phosphate synthase activity decreased. Acid invertase activity was higher at 50 mM NaCl and decreased to control levels at 150 mM NaCl. Alkaline invertase activity increased with the salt stress. Glucose content decreased with salt stress, sucrose content was almost three times higher in plants treated with 150 mM NaCl and fructose content did not change significantly. The most significant response of lupin plants to NaCl excess is the increase of sucrose content in leaves, which is partially due to SS activity increase under salinity.

invertases sucrose phosphate synthase sucrose synthase sugars 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • F.M. Fernandes
    • 1
    Email author
  • M.C. Arrabaça
    • 2
  • L.M.M. Carvalho
    • 3
  1. 1.Rua Pedro Soares s/nEscola Superior de Educação de BejaBejaPortugal
  2. 2.Departamento de Biologia VegetalFaculdade de Ciências da Universidade de LisboaLisboaPortugal
  3. 3.Escola Superior Agrária de BejaBejaPortugal

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