Abstract
Agave grijalvensis (B. Ullrich) was inoculated with Glomus fasciculatum (Thaxter sensu Gerd.) Gerd. and Trappe) and fertilized with different amounts of phosphorus (P) during plant development. Mycorrhizal colonization, fructan accumulation and fructosyltransferases enzymatic activities were determined. Glomus fasciculatum increased fresh weight of A. grijalvensis, the number of leaves, root length and fructan concentrations in stems and leaves. Phosphorus increased sucrose content, but reduced glucose and fructose concentrations in both leaves and stems. Activities of 1-fructosyltransferase (1-SST) (EC 2.4.1.99) and β-fructan-1-fructosyltransferase (1-FFT) (EC 2.4.1.100) were determined and explained due to different levels of fructans detected in A. grijalvensis plantlets.
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