Probleme der Flechtenphysiologie
[Problems of lichen physiology]
Feige, Guido Benno
The basic problems of the lichen metabolism mainly involve the translocation of metabolites from the alga (phycobiot) to the fungus (mycobiot). Generally the genetic disposition of the phycobiot determines nature of the predominantly transferred product which as an end product of photosynthetic carbon assimilation by the alga will normally be available to the consuming partner within the "microecosystem" lichen, the mycobiot. The mycobiots stimulate the release of specific transfer products of the algae by a mechanism which is hitherto not yet understood. Phycobiots removed from a lichen thallus loose these particular features of releasing their photosynthates, which characterizes them as actual partner of the mycobiots, relatively shortly after isolation.