共查询到20条相似文献,搜索用时 4 毫秒
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Z. Szelag 《Feddes Repertorium》2001,112(1):11-14
Hieracia balcania I. Hieracium ancevii (Asteraceae), a new species from Bulgaria Hieracium ancevii Szeląg, a new intermediate species “pannosum‐laevigatum” from Bulgaria is described, illustrated by photographs of its holotype and compared with related taxa. 相似文献
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A new species, endemic to the Flora Iranica area, Gagea robusta (Liliaceae) is described and illustrated. It differs from G. reticulata (Pall.) Schult. & Schult. f. in having a puberulent indumentum on the basal leaf and from G. setifolia Baker ex Aitch. in having a long neck (up to 12 cm long). Its ecology, distribution and conservation status are discussed. 相似文献
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Jurinea turcica B.Doǧan & A.Duran sp. nova (Asteraceae) is described and illustrated from North-West Anatolia, Turkey. It is closely related to J. macrocalathia and also an endemic. Diagnostic morphological characters of J. turcica from closely similar taxa are discussed. The pollen characteristics and achene surface morphology of J. turcica and J. macrocalathia are examined by SEM. It is diploid with the chromosome number of 2n = 34. 相似文献
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A new species in Croton section Argyroglossum from northeastern Brazil is described and illustrated. Croton limae was previously confused with C. tricolor and C. argyrophyllus, which are the most closely related species. Its geographic distribution is discussed and a key to distinguish these three related species is presented. 相似文献
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Following a re-examination of the material treated under Barleria brevispina (Fiori) Hedrén in the recent Flora of Somalia account of the Acanthaceae, it is concluded that two distinct species are involved and Barleria compacta Malombe & I. Darbysh. is described here from north-eastern Somalia. Its affinities and conservation status are discussed. 相似文献
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We describe and illustrate Capparidastrum tuxtlense, a narrow endemic, known only from the eastern slopes of Volcán San Martín, (10–450 m), Veracruz, Mexico. Capparidastrum tuxtlense is similar to Capparidastrum discolor, but differs by foliar, floral, and fruit characters. A discussion of putative relatives and a key to the Central American species of Capparidastrum are included. 相似文献
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In the course of a taxonomic revision of the Doronicum clusii agg. (Asteraceae), we present an updated and commented distribution map of D. clusii (All.) Tausch and D. stiriacum (Vill.) Dalla Torre from the Alps and Carpathians, completed with information on biogeography and taxonomy. We show that D. stiriacum was erroneously indicated for the Carpathians south and southeast of the Rodna Mountains in Romania and for the Western Alps. In the Western Carpathians, it has only been rarely mentioned for the Nízke Tatry (Lower Tatras) and the Belianske Tatry (Belá Tatras) in Slovakia. 相似文献
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I. Rosario G. Soro S. Déniz O. Ferrer F. Acosta D. Padilla B. Acosta 《Mycopathologia》2010,169(4):315-319
Columba livia is an important reservoir and carrier of Cryptococcus neoformans, Cryptococcus uniguttulatus, Cryptococcus laurentii and Cryptococcus albidus. Upper digestive tract of this species is also known as a habitat for Cryptococcus neoformans. Given the increasing clinical interest of this microorganism, 331 swabs from crop and 174 dropping samples from pigeon lofts in Grand Canary Island have been studied. The obtained results show an extensive presence samples 81 positive (24.47%) of Cryptococcus spp. in analysed crops: 32 (9.66%) for C. neoformans, 24 (7.2%) for C. uniguttulatus, 23 (6.9%) for C. albidus and 2 (0.6%) for C. laurentii. In the same way, Cryptococcus spp was also isolated in 82 (47.13%), dropping samples: C. neoformans in 59 (33.9%), C. uniguttulatus, in 9 (5.17%), C. laurentii in 8 (4.59%) and C. albidus in 6 (3.44%) of the investigated samples, respectively. The cryptococcosis produced by species of cryptococci other than C. neoformans has become more important during the last decade, supporting the study on the role of pigeon in the epidemiology of this disease. 相似文献
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Hai-Nan Su Bin-Bin Xie Xiu-Lan Chen Jin-Xia Wang Xi-Ying Zhang Bai-Cheng Zhou Yu-Zhong Zhang 《Journal of applied phycology》2010,22(1):65-70
Allophycocyanin (APC) is a minor component of phycobiliproteins in cyanobacteria and red algae. This paper describes a simple and inexpensive extracting method for isolating APC from Spirulina (Arthrospira) platensis with high efficiency. The crude phycobiliprotein extract was pretreated by ammonium sulfate fractionation. Then, by adding hydroxylapatite into crude phycobiliprotein extract dissolved in 20 mM phosphate buffer (pH 7.0), APC was selectively adsorbed by hydroxylapatite but C-phycocyanin (C-PC) was not. The hydroxylapatite was collected and APC was extracted from the crude phycobiliprotein extract. Then, the enriched APC was washed off from the hydroxylapatite using 100 mM phosphate buffer (pH 7.0). In this simple extracting method it was easy to remove C-PC and isolate APC in large amounts. The absorbance ratio A 650/A 280 of extracted APC reached 2.0. The recovery yield was 70%, representing 4.61 mg · g−1 wet weight. The extracted APC could be further purified by a simple anion-exchange chromatography with a pH gradient from 5.6 to 4.0. The absorbance ratio A 650/A 280 of the purified APC reached 5.0, and the overall recovery yield was 43%, representing 2.83 mg · g−1 wet weight. Its purity was confirmed by native polyacrylamide gel electrophoresis (PAGE) and sodium dodecyl sulfate-PAGE. 相似文献
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Jiu-Cun Wang Syeling Lai Xinjian Guo Xuefeng Zhang Benoit de Crombrugghe Sonali Sonnylal Frank C Arnett Xiaodong Zhou 《Arthritis research & therapy》2010,12(2):R60
Introduction
SPARC is a matricellular protein, which, along with other extracellular matrix components including collagens, is commonly over-expressed in fibrotic diseases. The purpose of this study was to examine whether inhibition of SPARC can regulate collagen expression in vitro and in vivo, and subsequently attenuate fibrotic stimulation by bleomycin in mouse skin and lungs. 相似文献16.
Boletus kermesinus, a new species of Boletus section Luridi, is fully described and illustrated based on the materials collected in subalpine coniferous forests of central Honshu, Japan. It has distinctive features of dark-red basidiomata having distinct viscidity in the pileus surface, usually unchanging flesh, discolorous red pores, and an entirely reticulate stipe becoming coarsely lacerate-rimose with age. 相似文献
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