heterokaryotic, a. Bot.
(ˌhɛtərəʊkærɪˈɒtɪk)
Also -caryotic.
[ad. G. heterocaryotisch (H. Burgeff 1913, in Ber. d. Deut. Bot. Ges. XXX. 680), f. hetero- + karyo- + -otic.]
Exhibiting or resulting from heterokaryosis. Hence ˌheteroˈkaryon (-ˈkærɪən), a heterokaryotic cell, structure, or organism; ˌheterokaryˈosis (-kærɪˈəʊsɪs), the condition, prevalent among fungi, in which two or more genetically different nuclei are maintained in a common cytoplasm.
| 1916 B. D. Jackson Gloss. Bot. Terms (ed. 3) 178/1 Heterokaryotic,..the character of spores in which both male and female nuclei exist (Burgeff); Heterokaryosis is the condition. 1932 Phytopathology XXII. 955 The term ‘heterocaryosis’ precisely describes the condition of a cell containing 2 or more genetically different nuclei. 1935 Ibid. XXV. 285 The very young spore already contains several nuclei; hence it is quite possible that each may carry different factors for cultural characters and pathogenicity. The organism may then be truly heterocaryotic. 1942 Bull. Torrey Bot. Club LXIX. 75 (heading) Heterocaryotic vigor in Neurospora. 1945 Genetics XXX. 13 The natural heterokaryon in Neurospora crassa generally contains both plus and minus nuclei. 1952 S. Emerson in J. W. Gowan Heterosis xii. 200 (caption) Heterocaryon formation resulting from hyphal fusion. 1955 New Biol. XIX. 20 Heterokaryosis has this advantage over sex that a single organism can contain genes from more than two parents. 1969 Nature 30 Aug. 961/2 The diploid nuclei were produced by rare nuclear fusion in a balanced heterokaryon formed from two different uninucleate colour mutants. |