▁secret ed ▁by ▁the ▁plant ▁and ▁reached ▁to ▁fung i , ▁meaning ▁that ▁str ig ol act ones ▁are ▁also ▁part ▁of ▁the ▁recognition ▁process ▁by ▁the ▁fung i . ▁ ▁Due ▁the ▁fact ▁that ▁ar bus cul a ▁my chor ri za ▁can ▁form ▁sym bi otic ▁associations ▁with ▁the ▁majority ▁of ▁the ▁ang ios per ms , ▁and ▁many ▁g ymn os per ms , ▁it ▁is ▁expected ▁to ▁found ▁different ▁str ig ol act ones ▁comp ounds ▁distributed ▁in ▁a ▁whole ▁variety ▁of ▁plants . ▁Unfortunately , ▁while ▁str ig ol act ones ▁are ▁supposed ly ▁found ▁in ▁most ▁plants , ▁the ▁studies ▁done ▁with ▁str ig ol act ones ▁and ▁AM ▁fung i ▁so ▁far , ▁have ▁only ▁studied ▁a ▁very ▁limited ▁range ▁of ▁plant ▁species , ▁mostly ▁due ▁the ▁difficulty ▁to ▁extract ▁these ▁comp ounds ▁and ▁due ▁its ▁ease ▁to ▁dis integr ate ▁in ▁solution . ▁ ▁Str ig ol act ones ▁are ▁not ▁only ▁necessary ▁for ▁the ▁recognition ▁of ▁the ▁plant ▁by ▁the ▁fung i , ▁they ▁are ▁also ▁required ▁by ▁the ▁recognition ▁of ▁the ▁fung i ▁by ▁the ▁plant . ▁The ▁mechanism ▁of ▁fung al ▁recognition ▁occurs ▁in ▁a ▁similar ▁fashion ▁that ▁the ▁recognition ▁of ▁b acter ias ▁such ▁as ▁Rh iz ob ia ▁sp . ▁In ▁fact , ▁it ▁has ▁been ▁proposed ▁that ▁the ▁recognition ▁mechanism ▁for ▁b acter ias ▁evol ved ▁from ▁the ▁mechanism ▁to ▁recognize ▁fung i , ▁because ▁the ▁latter ▁is ▁known ▁to ▁be ▁more ▁primitive ▁and ▁ancient . ▁Just ▁like ▁b