Strobilurus tenacellus
... that a modified version of a chemical naturally occurring in the mushroom Strobilurus tenacellus is the world's biggest-selling fungicide?
... that a <a href="./Azoxystrobin" id="mwC_I" rel="mw:WikiLink" title="Azoxystrobin">modified version of a chemical</a> naturally occurring in the mushroom <i id="mwC_M"><b id="mwC_Q"><a href="./Strobilurus_tenacellus" id="mwC_U" rel="mw:WikiLink" title="Strobilurus tenacellus">Strobilurus tenacellus</a></b></i> is the world's biggest-selling <a href="./Fungicide" id="mwC_Y" rel="mw:WikiLink" title="Fungicide">fungicide</a>?