The Endophyte-Grass symbiotic interaction phenotype is disrupted in <i>ΔsidN</i> infected plants.

<p>A. Phenotypes of perennial ryegrass plants infected with wild-type <i>E. festucae</i> Fl1 (WT), complemented <i>ΔsidN</i> strain (C-<i>sidN</i>) and <i>ΔsidN</i> mutant 85 (<i>ΔsidN</i>). B. Root systems of <i>sidN</i> infected plants are reduced compared to WT infections. A perennial ryegrass plant infected with <i>E. festucae</i> (WT) is compared against three Δ<i>sidN</i> 85 infected plants displaying increased levels of plant stunting from left to right. Plants are 14 weeks old. C, D and E. Light micrograph DIC images of aniline-blue stained hyphae of wild-type <i>E. festucae</i> Fl1 (WT). C. <i>ΔsidN</i> mutant 85. D. <i>ΔsidN</i> mutant 54. E. in mature leaf sheaths.