mycobiontn.
/mʌɪkə(ʊ)ˈbʌɪɒnt/, U.S. /ˌmaɪkoʊˈbaɪˌɑnt/ Biology.
1. The fungal component of a lichen; a lichenized fungus. Cf. phycobiont n.
ΘΚΠ
the world > plants > particular plants > lichen > [noun] > fungal or algal component
mycobiont1957
phycobiont1957
1957 G. D. Scott in Nature 2 Mar. 486/2 Three new terms are here proposed... They are:..(2) ‘mycobiont’, applicable to a fungus in association with an alga in the formation of a lichen.
1969 Ecology 50 744/2 In the laboratory the lichen organization breaks down and either the phycobiont..or the mycobiont..overgrows the other partner.
1986 M. Kogut tr. H. G. Schlegel Gen. Microbiol. xvii. 520 As a rule, the fungal component of the association, the mycobiont, determines the shape.
2000 New Phytologist 148 11 The mycobiont and photobiont live together in an integrated thallus, but they lack specific tissue for the transport of metabolites and resources between them.
2. A fungus in association with another type of organism; spec. a mycorrhizal fungus.
ΚΠ
1957 G. D. Scott in Nature 2 Mar. 487/1 Mycobiont may be applied to mycorrhizal associations and to pathogenic fungi.
1973 New Phytologist 72 1330 There appears to be some accumulation of phosphorus in mycorrhizal roots of Vaccinium. It is not yet clear whether this storage is in the mycobiont as it is in beech mycorrhiza.
1984 Plant Physiol. 76 918 In ectomycorrhizae, the relative abilities of mycobiont and host plant to take up and store inorganic nutrients are not easily determined due to the intimate physical relationship of the two components forming the association.
2000 Canad. Jrnl. Forest Res. 30 1543 Recent maple decline could result from altered intensity and quality of root colonization by associated mycobionts.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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