dikaryonn.
/dʌɪˈkarɪən/ Biology.
A pair of unfused haploid nuclei of opposite mating type in a cell or spore which divide simultaneously when the cell divides; also, a dikaryotic cell, spore, or mycelium.
ΚΠ
1913 W. B. Grove Brit. Rust Fungi i. 5 The two adjacent nuclei are said to be ‘paired’, and together they consititute a synkaryon or dikaryon.
1971 Nature 30 Apr. 552/2 [They] report the successful growth in vitro of the corn smut (Ustilago maydis) dikaryon.
Derivatives
dikaryˈotic adj. containing a dikaryon; composed of dikaryons.
ΚΠ
1941 Bot. Rev. 7 393 A dikaryotic hybrid may be defined as a hybrid made up of dikaryotic diploid cells, i.e. cells containing a conjugate pair of haploid nuclei.
1947 C. E. Skinner et al. Henrici's Molds, Yeasts, & Actinomycetes (ed. 2) i. 9 The mycelium with paired nuclei of opposite ‘sex’ which divides conjugately is known as the dikaryon or is described as dikaryotic.
1971 Nature 30 Apr. 552/3 It is the fusion of two of these non-pathogenic haploid cells which gives rise to the pathogenic dikaryotic mycelium.
This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2020).
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n.1913