单词 | rhizomorph |
释义 | rhizomorphn. 1. Mycology. A root-like strand of fused hyphae (sometimes branching and forming a network) found in certain parasitic and saprophytic fungi, which can penetrate plant tissues and soil and by which a fungus may be able to extend over considerable distances to reach a new host.Originally thought to represent an independent fungus, a member of the (former) genus Rhizomorpha (see Rhizomorpha n.). ΘΚΠ the world > plants > particular plants > fungi > [noun] > parts of pileus1760 hat1775 rind1788 spherule1796 Rhizomorpha1802 stipe1821 peridium1823 umbo1836 ambrosia1840 holdfast1841 rhizomorph1848 peridiole1857 trama1857 pileole1858 pileolus1858 byssus1866 rhabdus1866 conidiophore1874 appressorium1897 1848 H. Watts tr. L. Gmelin Hand-bk. Chem. I. 188 Rhizomorphs shine more brightly in oxygen gas than in common air. 1895 W. R. Fisher Schlich's Man. Forestry IV. iii. 378 Sometimes the hyphae unite into compact bundles with hard walls, termed rhizomorphs, which resemble roots. 1927 H. Gwynne-Vaughan & B. F. Barnes Struct. & Devel. Fungi 1 The hyphae..may give rise to root-like strands known as rhizomorphs, or to a compact resting body, the sclerotium, the outer cells of which are modified to form a rind, protecting the inner regions from desiccation. 1950 L. E. Hawker Physiol. Fungi i. 13 Long, string-like interwoven strands often occur and are known as rhizomorphs. The simplest forms consist of a few interwoven hyphae, of which the outer ones may be finer than those in the centre. 1965 P. Bell & D. Coombe tr. E. Strasburger Textbk. Doc. 558 Lepidendronales. These trees were anchored by shallow,..rhizome-like, repeatedly dichotomous rhozomorphs..apparently a typical, positively geotropical root was absent. 1998 Independent on Sunday 26 July (Review Suppl.) 47/5 Firstly, there are the rhizomorphs, dry rot's tentacle-like strands which reach out from the main fruitbody—a fungal pancake up to a metre wide that would fit perfectly into our sci-fi movie. 2. Palaeontology and Botany. Any of the bifurcating root-like support structures produced by tree lycopods and modern quillworts (genus Isoetes). ΚΠ 1890 J. I. Northrop in Trans. N.Y. Acad. Sci. 10 17 As these masses are conspicuous and characteristic, I would suggest that they be called rhizomorphs; and this name would also cover the tubular masses..found in the ferruginous clays of New Jersey and elsewhere. 1979 Amer. Jrnl. Bot. 66 921/1 The latter cells..probably represent a periderm that is similar to that in the rhizomorph of Paurodendron. 2008 C. A. Arnold Introd. Paleobot. v. 126 Probably the most striking feature of the plant is the resemblance between the lobed basal portion and the rhizomorph of the living Isoetes. Derivatives rhizoˈmorphic possessing rhizomorphs; relating to of the nature of a rhizomorph. ΚΠ 1878 Proc. Soc. Antiquaries Scotl. 12 296 A specimen of the rhizomorphic fungus referred to by Mr Sadler in the same volume. 1939 I. E. Melhus & G. C. Kent Elem. Plant Pathol. 418 In this organic matter the mycelium may spread considerable distances in rhizomorphic strands. 1985 Rev. Palaeobot. & Palynol. 47 5 The direction of curvature of the series on the lobes of rhizomorphic lycopods. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1848 |
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