The fungus absorbs some of the sugars, but some travels on and enters  the roots of a neighboring tree, a seedling that grows in the shade and  has less opportunity to photosynthesize sugars.
Gljivice absorbiraju jedan dio šećera, a drugi dio putuje dalje i dospijeva u korijene susjednog stabla, sjemenjače koja raste u sjeni i ima manje mogućnosti proizvoditi šećer fotosintezom.