Parasitic Relationship between Two Culturally Isolated and Unrelated Lichen Components

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Science  06 Nov 1959:
Vol. 130, Issue 3384, pp. 1251
DOI: 10.1126/science.130.3384.1251


The presence of numerous haustoria, with accompanying death of the algal cells, was noted in a mixed cuture of the fungal symbiont (mycobiont) of Collema tenax (Sw.) Ach., em. Degel. and Trebouxia impressa Ahm., the algal partner (phycobiont) of Physcia stellaris (L.) Nyl. The parasitic action was noted even on media which would optimally sustain the independent growth of the individual symbionts.