Complementation of Δ<i>Fghtf1</i> and Δ<i>Fvhtf1</i> mutant by <i>Fusarium</i> Htf1 homologous genes.

<p>(A) We complemented <i>F. graminearum</i> gene deletion mutant (Δ<i>Fghtf1</i>) with <i>F. verticillioides FvHTF1</i> (Δ<i>Fghtf1-Fv</i>) and <i>F. oxysporum FoHTF1</i> (Δ<i>Fghtf1-Fo</i>). Δ<i>Fght1-Fv</i> and Δ<i>Fght1-Fo</i> produced abundant macroconidia borne on terminal phialides in contrast to Δ<i>Fghtf1</i> which produced aberrant terminal phialides and failed to form macroconidia and. Bar = 20 µm. (B) In <i>F. verticillioides</i> gene deletion mutant (Δ<i>Fvht1</i>), microconidial chains are absent instead microconidia assemble in abnormal false heads (a–c). <i>F. graminearum FgHTF1</i> complemented strain (Δ<i>Fvht1-Fg</i>) showed protypical chains and false heads of microconidia found in wild-type <i>F. verticillioides</i>. Bar = 50 µm.