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THE ULTRASTRUCTURE OF LICHENS. II. CLADONIA CRISTATELLA : THE LICHEN AND ITS ISOLATED SYMBIONTS 1 , 2 , 3
Author(s) -
Jacobs J. B.,
Ahmadjian V.
Publication year - 1971
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1971.tb01482.x
Subject(s) - hypha , biology , pyrenoid , lichen , botany , ultrastructure , fungus , fragmentation (computing) , haustorium , ecology , chloroplast , host (biology) , biochemistry , gene
SUMMARY A Comparative Study Was Made Of The Fine Structure of Cladonia Cristatella and its algal Symbiont Trebouxia Erici in their lichenized and cultured ( nonlichenized) states. Pyrenoglobuli were produced by the alga in the symbiotic and free conditions. Starch was formed during hydrated conditions. Pyrenoglobbuli migrated to the outer parts of the pyrenoid only during dry periods. Dictyosomes and eyespots were observed for the first time in Trebouxia . The pyrenoid divided by fragmentation. Ellipsoidal bodies were common in the hyphae of the lichenized fungus and absent in cultured hyphae, except for 1 colony which had been induced to form pycnidia. The ellipsoidal bodies were associated closely with the internal membrane system of the mycobiont. Haustoria seemed to penetrate the algal cells by enzymatic digestion. Intrahyphal hyphae were common.