W AR F 1 4 , ▁leading ▁to ▁interaction ▁with ▁another ▁protein . ▁ ▁Kin etic ▁results ▁have ▁suggested ▁that ▁the ▁int act ▁str ig ol act one ▁triggers ▁a ▁signal ing ▁cas cade ▁after ▁which ▁hydro ly s is ▁is ▁carried ▁out ▁as ▁the ▁final ▁step ▁to ▁in activ ate ▁the ▁str ig ol act one ▁mole c ule . ▁ ▁Mechan ism ▁of ▁action ▁ ▁Germ ination ▁of ▁ar bus cular ▁my cor rh iza ▁ ▁Str ig ol act ones ▁are ▁known ▁to ▁stim ulate ▁the ▁germ ination ▁of ▁ar bus cular ▁my cor rh iza ▁sp ores . ▁Since ▁they ▁produce ▁this ▁effect ▁at ▁extremely ▁low ▁concentr ations , ▁it ▁has ▁been ▁proposed ▁that ▁the ▁mechanism ▁of ▁activation ▁must ▁be ▁a ▁signal ing ▁path way . ▁D ifferent ▁studies ▁with ▁diverse ▁type ▁of ▁fung i , ▁have ▁found ▁that ▁after ▁stim ulation ▁with ▁str ig ol act ones , ▁the ▁fung al ▁cells ▁present ▁a ▁higher ▁amount ▁of ▁mit och ond ria ▁and ▁an ▁increase ▁in ▁their ▁ox id ative ▁activity . ▁Due ▁the ▁role ▁of ▁mit och ond ria ▁in ▁ox id ative ▁met abol ism ▁of ▁mac ron ut ri ents , ▁it ▁is ▁thought ▁that ▁the ▁sp ores ▁remain ▁in active ▁before ▁finding ▁the ▁host ▁plant , ▁and ▁once ▁they ▁are ▁stim ulated ▁with ▁str ig ol act ones , ▁the ▁ox id ative ▁mach in ery ▁in ▁the ▁mit och ond r ion ▁gets ▁activ ated ▁to ▁produce ▁energy ▁and ▁nut ri ents ▁necess aries