Convergent losses of decay mechanisms and rapid turnover of symbiosis genes in mycorrhizal mutualists / Annegret Kohler;Alan Kuo;Laszlo G Nagy;Emmanuelle Morin;Kerrie W Barry;Francois Buscot;Björn Canbäck;Cindy Choi;Nicolas Cichocki;Alicia Clum;Jan Colpaert;Alex Copeland;Mauricio D Costa;Jeanne Do