, ▁tre hal ose ▁being ▁extremely ▁common ▁for ▁most ▁my cor rh iz al ▁fung us , ▁am ino ▁ac ids , ▁or ▁simply ▁assim il ated ▁into ▁the ▁fung al ▁organ ism . ▁The ▁transfer ▁of ▁carbon ▁from ▁fung i ▁to ▁plant ▁happens ▁in ▁one ▁of ▁two ▁forms ▁either ▁as ▁car bo h yd r ates ▁primarily ▁tre hal ose , ▁but ▁gl uc ose ▁and ▁suc rose ▁may ▁also ▁be ▁involved , ▁or ▁as ▁an ▁am ino ▁ac ids ▁primarily ▁as ▁arg in ine ▁but ▁g ly c ine ▁and ▁gl ut am ine ▁can ▁also ▁be ▁transferred . ▁These ▁mole cules ▁are ▁transport ed , ▁via ▁special ized ▁am ino ▁acid ▁per me ases ▁and ▁car bo h yd rate ▁trans por ters ▁embedded ▁in ▁the ▁fung al ▁pel ot on ▁memb rane , ▁into ▁the ▁inter f icial ▁space ▁where ▁they ▁are ▁absor bed ▁into ▁the ▁plant ▁through ▁similar ▁analog ous ▁trans por ters ▁in ▁the ▁plant ▁end op las mic ▁ret icul um ▁memb rane ▁which ▁surr ounds ▁the ▁pel ot on . ▁Gen es ▁which ▁encode ▁for ▁such ▁trans por ters ▁experience ▁significant ▁up reg ulation ▁in ▁both ▁plant ▁and ▁fung i , ▁similar ▁to ▁the ▁up reg ulation ▁seen ▁in ▁nit ro gen ▁and ▁ph osph orus ▁comp ound ▁trans porter ▁gen es ▁during ▁sym b ios is . ▁This ▁active ▁transport ▁of ▁carbon ▁from ▁fung i ▁to ▁plant ▁is ▁an ▁exclus ively ▁bi ot orph ic ▁reaction ▁but ▁it ▁is ▁thought ▁that ▁a ▁significant ▁amount