STRUCTURAL RESISTANCES TO MASS TRANSFER IN THE LICHEN XANTHORIA PARIETINA

Autor:	C. R. Collins, J. F. Farrar
Rok vydání:	1978
Předmět:	biology Physiology Co2 flux food and beverages Plant Science Fungus biology.organism_classification Photosynthesis Ribitol chemistry.chemical_compound Xanthoria parietina chemistry Haustorium Mass transfer Botany Lichen
Zdroj:	New Phytologist. 81:71-83
ISSN:	1469-8137 0028-646X
DOI:	10.1111/j.1469-8137.1978.tb01605.x
Popis:	SUMMARY Quantitative morphological data obtained from Xanthoria parietina by light and electron microscopy is related to measurements of photosynthesis rate and estimates of biotrophic ribitol transfer. It is concluded (a) that diffusive CO2 flux into the alga is greatly reduced by the resistance of the fungal cortex, (b) that diffusion can easily account for the mass transfer of ribitol from alga to fungus, and (c) that haustoria have no role in the biotrophic transfer of carbohydrate in lichens.
Databáze:	OpenAIRE
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