Plant Cell, Tissue and Organ Culture

, Volume 74, Issue 3, pp 237–241 | Cite as

Increased photosyntethic efficiency generated by fungal symbiosis in Agave victoria-reginae

  • Eva N. Obledo
  • Lilia B. Barragán-Barragán
  • Porfirio Gutiérrez-González
  • Blanca C. Ramírez-Hernández
  • José J. Ramírez
  • Benjamín Rodríguez-Garay


A unique non-pathogenic strain of Fusarium oxysporum was isolated from field-collected plants of Agave victoria-reginae Moore. It was then re-introduced into micropropagated plants of the same species under greenhouse conditions. The fungic inoculation induced a 225% increase in the length of roots, 50% in the number of root branches and 50% in the number of stomata on the adaxial surface of leaves. Also, an increment of 167% in nocturnal acidity and a 122% in malic acid was observed and nocturnal pH was significantly more acid in the inoculated plants. Total chlorophyll and sugar content increased 14 and 172%, respectively. These results indicate a higher photosynthetic efficiency of the plants inoculated with the fungus than those plants which were not inoculated; therefore the association of this unique F. oxysporum strain with A. victoria-reginae Moore was considered as a beneficial symbiosis.

Agave beneficial symbiosis CAM plants endophyte Fusarium oxysporum 


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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Eva N. Obledo
    • 1
  • Lilia B. Barragán-Barragán
    • 2
  • Porfirio Gutiérrez-González
    • 3
  • Blanca C. Ramírez-Hernández
    • 4
  • José J. Ramírez
    • 1
  • Benjamín Rodríguez-Garay
    • 1
  1. 1.Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.CGuadalajara JaliscoMexico
  2. 2.Departamento de Investigacion y DesarrolloTequila HerraduraAmatitán JaliscoMexico
  3. 3.Centro Universitario de Ciencias Exactas e Ingenierías, Departamento de MatemáticasUniversidad de GuadalajaraJaliscoMexico
  4. 4.Centro Universitario de Ciencias Biológicas y Agropecuarias, Departamento de Fisiología VegetalUniversidad de GuadalajaraJaliscoMexico

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