| 释义 |
‖ conidium Bot.|kəʊˈnɪdɪəm|
Pl. conidia.
[mod.L., f. Gr. κόνις dust, as if representing a dim. *κονίδιον.]
A unicellular asexual reproductive body occurring in certain fungi. Also in bacteria of the orders Actinomycetales and Chlamydobacteriales, which have some resemblances to fungi.
1870Bentley Bot. 378 These conidia may be regarded as a fourth kind of reproductive organ. 1882Vines Sachs' Bot. 233 All other unicellular and non-sexual organs of reproduction we shall not term spores, but gonidia or conidia. 1925C. H. Browning Bacteriology iv. 67 The higher bacteria, like the fungi, develop special structures known as ‘conidia’, and these conidia then grow into the bacterial forms. 1934A. T. Henrici Biol. Bacteria vi. 99 The Actinomycetes proper multiply by means of spores, or conidia, which, like the conidia of Fungi belonging to the Ascomycetes or Fungi imperfecti, are formed by a constriction of cells at the ends of filaments of the mycelium projecting into the air... Apparently, then, these Actinomycetes are just like molds in their essential characters, and indeed some authorities would classify them with the higher Fungi rather than with the bacteria. 1960C. F. Robinow in Gunsalus & Stanier Bacteria I. v. 229 Although this chapter is supposedly dealing with the endospore of bacteria, we may, in truth, be concerned with something which may have to be regarded as a cross between a conidium and a chlamydospore. 1969S. T. Lyles Biol. Microorganisms viii. 174 Actinomycetes produce true mycelia, which may contain irregular segments and branches; conidia may be produced. Although not true bacteria, these procaryotic fungilike forms differ from true fungi in many respects and are still grouped with bacteria.
Hence coˈnidial a., of, or pertaining to, of the nature of or relating to a conidium or conidia. conidiˈiferous a. [L. -fer bearing + -ous], conidiˈophorous a. [Gr. -ϕορος bearing + -ous], bearing conidia. coˈnidioid a., of the form or character of a conidium. coˈnidiophore, a stalk or branch of the mycelium bearing conidia.
1874Cooke Fungi 73 Only conidial forms of higher fungi. Ibid. 74 Which is really the conidiiferous form of Erysiphe. Ibid. 73 The species found on dead insects..are merely the conidiophores of species of Torrubia. 1882Vines Sachs' Bot. 264 The mass..which fills up the space between the conidia in the conidiophore of the Mucorini. |