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A novel anamorphic yeast species belonging to the genus Candida has been isolated from cellar surfaces in North Patagonia. Morphological and physiological observation and phylogenetic analysis
were performed. Pseudomycelium was plentifully produced. No sexual reproduction was observed. From sequence analysis of the
26S rDNA D1/D2 region, Candida bituminiphila and Zygoascus hellenicus were the closest species with 40 and 79 bp substitutions, respectively. C. bituminiphila differed physiologically from the novel species in its ability to assimilate sucrose and erythritol, in not fermenting any
sugars, in growing without some vitamin compounds, and in growing at 40°C. All these data support the hypothesis that the
new yeast, named Candida patagonica, is a novel species related to C. bituminiphila. The type strain is UNCOMA 159.5 (= CECT 12029 = CBS 10443). 相似文献
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Two yeast strains, producing needle-shaped ascospores under suitable conditions, were isolated from grapes grown in Hungary. Based on these two strains, Metschnikowia viticola (type strain NCAIM Y.01705, CBS 9950, JCM 12561) is proposed as a new yeast species. Considering its phenotypic features, the restriction fragment patterns of 18S rDNA and the sequence of the D1/D2 domain of 26S rDNA, the proposed new species is closely related to Candida kofuensis. 相似文献
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Takashi Nakase Sasitorn Jindamorakot Somjit Am-in Hiroko Kawasaki Wanchern Potacharoen Morakot Tanticharoen 《Mycoscience》2005,46(3):192-195
A yeast strain isolated from insect frass collected in Thailand was found to represent a new species of the genus Pichia. It is described as Pichia nongkratonensis sp. nov. In the phylogenetic tree based on the D1/D2 domain sequences of 26S rDNA, this yeast constitutes a cluster with Pichia dryadoides with high bootstrap confidence level; however, it differs from the latter species by 5.6% base substitutions. Pichia nongkaratonensis resembles P. dryadoides also in the phenotypic characteristics but is distinguished from this species by the assimilation of several carbon and nitrogen compounds. 相似文献
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Capnobotryella is a monotypic genus of melanized fungi based on C. renispora. The purpose of this investigation was to use morphological and molecular genetic techniques to characterize strains of newly discovered species isolated in Turkey on historical marble monuments. 相似文献
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Haruki Takahashi 《Mycoscience》2007,48(6):342-357
Eight new species of the genus Mycena (Agaricales) found on dead leaves or twigs in warm temperate lowland forests are described and illustrated from central Honshu, Japan: (1) Mycena fonticola sp. nov. (section Fragilipedes); (2) Mycena intersecta sp. nov. (section Fragilipedes); (3) Mycena lanuginosa sp. nov. (section Fragilipedes); (4) Mycena mustea sp. nov. (section Fragilipedes); (5) Mycena multiplicata sp. nov. (section Mycena); (6) Mycena nidificata sp. nov. (section Hiemales); (7) Mycena fuscoaurantiaca sp. nov. (section Fragilipedes); and (8) Mycena clariviolacea sp. nov. (section Fragilipedes). 相似文献
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A new species of Ulocladium was discovered from diseased leaves of Lycopersicon esculentum and Duchesnea indica from Hunan Province of China. Morphologically, this species is very close to U. consortiale, U. cucurbitae, and U. subcucurbitae in producing narrow ellipsoid conidia at 1–3 days, but the conidial size range of this species at this stage could distinguish it from three well-known species. It also
exhibits the multiplex conidium morphology at the different growth-stages (1–3 days and 4–7 days). The results of maximum
parsimony (MP) and neighbor-joining (NJ) phylogenetic analyses of combined glyceraldehyde-3-phosphate dehydrogenase (gpd) gene and Alternaria alternata major allergen (Alt a 1) genes show that U. solani and U. subcucurbitae cluster in a unique and separate subclade with no clear affinities to a specific sistergroup, and demonstrate that the Ulocladium species group is monphyletic, but two clades of this section are recognized. Morphological features of this new species,
the sequences of the Alt a 1 and gpd gene regions, and its comparison with related species in this genus are discussed. 相似文献
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W. Swanepoel 《South African Journal of Botany》2011,77(3):608-612
Commiphora buruxa Swanepoel, described here as a new species, is known only from the Gariep Centre of Endemism, southwestern Namibia. It appears to be most closely related to C. cervifolia Van der Walt. Diagnostic morphological characters of C. buruxa include a viscous, cream-coloured exudate, variably simple to trifoliolate leaves, and a putamen covered by a small cupular pseudo-aril. Illustrations of the plant and a distribution map are provided. The species is known from less than 20 plants. 相似文献
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Two new species ofDelitschia are described from submerged wood;D. palmietensis collected in the Palmiet River in Durban Westville, South Africa andD. fasciatispora from the Black River, Mauritius. This brings the total ofDelitschia species known from non-coprophilous habitats to four.Delitschia palmietensis andD. fasciatispora are described and illustrated with light micrographs and discussed in relation to other species in the genus. A key to the non-coprophilousDelitschia species is provided. 相似文献
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The new species Gladiolus halophila Goldblatt & J.C.Manning from near Keetmanshoop in southern Namibia is described and illustrated. It is closely allied to G. longicollis and G. tristis from southwestern and eastern South Africa but is distinguished by its lilac flowers with shorter perianth tube, 35–40 mm long. The flowers last just one day and are self-compatible. The species, which is restricted to saline seepages, is known from just two populations, one of which is due to be inundated by a planned dam, and it is therefore classified as Endangered. The action of the Namibian Government in commissioning a search for additional localities serves as a valuable example in similar instances. 相似文献
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Thirty-two strains, many of them isolated from wood-associated habitats, and designated as Kuraishia (Pichia) capsulata and Candida molischiana according to their phenotype, exhibited two types of HaeIII restriction fragment patterns of their small subunit rDNA with the neighboring ITS. One fragment pattern corresponded
to that of the type strain of K. capsulata, whereas the other pattern was unique to the typestrain of C. molischiana. Sequencing of the D1/D2 domain of the large subunit rDNA confirmed that the different HaeIII restriction fragment patterns of small subunit rDNA with the neighboring ITS reliably distinguished K. capsulata from C. molischiana. Ascospore formation was observed in several C. molischiana strains and K. molischiana (type strain: NCAIM Y.01725, CBS 9993) is proposed as the teleomorphic state of Candida molischiana. 相似文献
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A new sparid species, Acanthopagrus akazakii, is described on the basis of 12 types collected from Noumèa, New Caledonia. Acanthopagrus akazakii is most similar to Acanthopagrus berda in overall appearance but differs from the latter in having 41/2 scale rows between the 5th dorsal fin spine base and lateral line, anteriormost head scales broadly rounded without small
scales anteriorly, upward- and downward-oriented portions present on anteriormost part of upper lip, a downward-oriented portion
on anteriormost part of lower lip in specimens over ca. 160 mm in standard length, and upper head profile gently convex from
snout tip to above eye throughout growth (vs. 31/2 scale rows between 5th dorsal fin spine base and lateral line, anteriormost head scales rounded with small scales anteriorly,
no upward and downward portions in anteriormost upper and lower lips, and upper head profile becoming concave from snout tip
to above eye with growth). Furthermore, A. berda develops a strong concavity of the ventral edge of the first two infraorbitals above the posterior part of upper jaw with
growth, whereas A. akazakii has a generally straight series throughout growth. Nominal species in A. berda are reviewed, with notes on nominal species of Acanthopagrus. 相似文献
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K. H. Rechinger 《Plant Systematics and Evolution》1986,153(3-4):287-292
Six new species are described:Gagea anonyma, G. Staintonii, G. siphonantha, G. Grey-Wilsonii, G. chloroneura. All belong to subgen.Platyspermum (Boiss.)Miscz.
Florae Iranicae praecursores63–68. — Praecursores praecurrentes: Pl. Syst. Evol.151, 281–293 (1986). 相似文献
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A new species Aspalathus abbottii C.H. Stirt. & Muasya, is described. The species is known only from Oribi Flats, KwaZulu-Natal, where it grows in grassland vegetation. The new species is characterised by its rigid spreading habit, densely and shortly villous branches, glabrous bracts and bracteoles, and 1(2) bright yellow flowers borne on short lateral shoots. It is most similar to other grassland species, A. frankenioides DC. and A. gerrardii H. Bol., all from the summer rainfall area of South Africa but differs in its rigid spreading habit, few bright yellow flowers per flowering branchlet, glabrous bracts and bracteoles, villous yellowish-green seasonal shoots, and its pale brown to tan over-seasonal branches with a blackish lattice of peeled bark. 相似文献
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The genomes of two hemiascomycetous yeasts (Saccharomyces cerevisiae and Candida albicans) and one archiascomycete (Schizosaccharomyces pombe) have been completely sequenced and the genes have been annotated. In addition, the genomes of 13 more Hemiascomycetes have been partially sequenced. The amount of data thus obtained provides information on the evolutionary relationships between yeast species. In addition, the differential genetic characteristics of the microorganisms explain a number of distinctive biological traits. Gene order conservation is observed between phylogenetically close species and is lost in distantly related species, probably due to rearrangements of short regions of DNA. However, gene function is much more conserved along evolution. Compared to S. cerevisiae and S. pombe, C. albicans has a larger number of specific genes, i.e., genes not found in other organisms, a fact that can account for the biological characteristics of this pathogenic dimorphic yeast which is able to colonize a large variety of environments. 相似文献
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Cortinarius breviradicatus sp. nov., found in deciduous forests, is described and illustrated from Niigata, Japan. It is characterized by its medium-sized to large dark brown basidiocarp, acutely conical pileus, and rooting stipe, and by subglobose to broadly ellipsoid basidiospores. In addition, the extracting solution from its basidiocarps exhibits a strong fluorescence around 400–430 nm in ultraviolet radiation (250 nm), which was observed in a species of Cortinarius sect. Orellani. The new species belongs to the section Orellani. The differences between the new taxon and similar species are briefly discussed. 相似文献