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STUDIES IN THE PHYSIOLOGY OF LICHENS
Author(s) -
SMITH D. C.,
DREW E. A.
Publication year - 1965
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1965.tb05390.x
Subject(s) - thallus , lichen , photosynthesis , botany , carbon fixation , hypha , biology , algae , chemistry
S ummary Carbon fixed by photosynthesis in the algal layer can move into the medulla of Peltigera polydactyla within 30 minutes. This movement continues at a steady rate equivalent to 40–50% of the total rate of carbon fixation in photosynthesis, and it can also continue for a time in darkness. Fixed carbon accumulates initially as soluble compounds, especially mannitol, both in the algal layer and in the medulla. Since translocation in the thallus is relatively rapid it follows that the first stage of this process, namely, the transfer of photosynthetic products within the algal layer from an algal cell to its associated fungal hyphae, is also a rapid process.