Fig. 2.

Spatial distribution of acid phosphatase activity in the rhizosphere of maize root hairless mutant rth3 (left) and wild type (WT, right). Representative examples are shown with AMF (top panels) and without inoculation (lower panels). The colour scale on the right shows linear enzyme activities (pKat mm⁻²). Top panels show rth3 (left) and wild type (right) with inoculated arbuscular mycorrhizal fungi. Bottom panels show rth3 (left), wild type (right) without inoculation of arbuscular mycorrhizal fungi.