FIG. 2.

Comparisons of ¹³C enrichment of NLFA 16:1ω5 to enrichment of NLFA 18:2ω6,9 and total C. (A) Plant roots studied in three experiments where the dotted line represents k = 1. (B) AM fungal mycelium across four experiments (y = 0.77x, r² = 0.94, P < 0.01). Triangles indicate monoxenic time course study, squares indicate monoxenic P experiment (open squares denotes no P, half-filled squares indicate low-P, and filled squares indicate high-P), open circles represent experiments with multiple plant hosts (extracted intraradical mycelium was used for determination of total hyphal ¹³C in panel B), and closed circles represent the sand compartment study. Means (n = 2 for the monoxenic time course study, n = 12 for the monoxenic P experiment, 6 for experiment with multiple plant hosts and 30 for sand compartment study) ± the SE; where no error bars can be seen, the SE is smaller than the symbol.