广东粉褶蕈属的分类研究

本文报道广东省粉褶蕈属Entoloma(Fr.)Kummer的23种,其中新种4个,国内新记录种17个。新种为肉色粉褶蕈Entoloma carneum Bi sp.nov.,拟灰白粉褶蕈Entoloma pseudo-griseoalbum Bi sp.nov.,绒毛粉褶蕈 Entoloma tomentosum Bi sp.nov.以及橙黄粉褶蕈Entoloma aurantiacum Bi sp.nov.。17个国内新纪录是:白粉褶蕈E.albidum(Murr.)Hesler,小白粉褶蕈E.albinellum(Pk.)Hesler,变灰褐粉褶蕈E.canobrunnescens Horak,卡罗琳尼粉褶蕈E.carolinianum Hesler,角柄粉褶蕈E.ceratopus Horak,黄肉色粉褶蕈E.flavocerinum Horak,脆柄粉褶蕈E.fragilipes Corner et Horak,烟色粉褶蕈E.fumeum Hesler,灰色粉褶蕈E.grayanum(Pk.)Sacc.,贺斯同美粉褶蕈E.hallstromii Horak,类洁粉褶蕈E.purddes Horak,方形粉褶蕈E.quadratum(Berk.et Curt.)Horak,圆孢粉褶蕈E.rotundisporum Horak,近白粉褶蕈E.subalbidum Murr.,亚亮粉褶蕈E.sublucidum Murr.,近方形粉褶蕈E.subquadratum Hesler及紫褐粉褶蕈E.violaceobrunneum Hesler。文中有分种检索表     

海南省粉褶蕈属的分类研究(Ⅰ)

本文报道了海南省粉褶蕈属[Entoloma(Fr.)Kumm.]6个新种,它们是:锈褐粉褶荤(Entoloma ferrugineobrunneum W.M.Zhang sp nov.),紫褐粉褶蕈(Entoloma purpureo-brunneum W.M.Zhang sp.nov.),丛生粉褶蕈(Entoloma caespitosum W.M.Zhangs sp.nov.)肉褐粉褶蕈(Entoloma carneobrunneum W.M.Zhang sp.nov.),近杯伞状粉褶蕈(Enloloma subclitocyboides W.M.Zhang sp.nov.),近偏生粉褶蕈(Entoloma subeccentricum W.M.Zhang sp.nov.),所有标本保藏于广东省微生物研究所真菌标本室。     

海南省粉褶蕈属的分类研究(I)

本文报道了海南省粉褶蕈属[Entoloma(Fr．)Kumm.]6个新种,它们是：锈褐粉褶蕈(Entoloma terruglneobrunneum W．M．Zhang sp nov．),紫褐粉褶蕈(Emoloma purpureo-brunncum W．M．Zhang sp．nov．),丛生粉褶蕈(Entoloma aespitosum W. M. Zhang sp. Nov)．肉褐粉褶蕈(Entoloma carneobrunneum W．M. Zhang sp. Nov.)近杯伞状粉褶蕈(Entolomasubclitocyboides W. M. Zhang sp．nov.),近偏生粉褶蕈(Entoloma subecceatricum W. M.Zhang sp．nov．),所有标本保藏于广东省微生物研究所真菌标本室。     

海南省粉褶蕈属的分类研究（Ⅰ）

本文报道了海南省粉褶蕈属［Ｅｎｔｏｌｏｍａ（Ｆｒ．）Ｋｕｍｍ．］６个新种,它们是：锈褐粉褶蕈（Ｅｎｔｏｌｏｍａ ｆｅｒｒｕｇｉｎｅｏｂｒｕｎｎｅｕｍ Ｗ．Ｍ．Ｚ ｈａｎｇ ｓｐ．ｎｏｖ．）,紫褐粉褶蕈（Ｅｎｔｏｌｏｍａ ｐｕｒｐｕｒｅｏ－ｂｒｕｎｎｅｕｍ Ｗ．Ｍ．Ｚｈａｎｇ ｓｐ．ｎｏｖ．）,丛生粉褶蕈（Ｅｎｔｏｌｏｍａｃａｅｓｐｉｔｏｓｕｍ Ｗ．Ｍ．Ｚｈａｎｇ ｓｐ．ｎｏｖ．）,肉褐粉褶蕈（Ｅｎｔ     

中国粉褶蕈科已知种类及分类问题

中国粉褶蕈科物种资源丰富,文献记载有3属132种,其中斜盖伞属Clitopilus(Fr.)Qul.9种、粉褶蕈属Entoloma(Fr.)P.Kumm.121种、盖菇属Rhodocybe Maire2种。文中简要列出了中国粉褶蕈科已知种类、生境、分布情况,并更正了部分种分类混乱、命名不规范的错误。     

粉褶蕈属一新亚属和一新种

本文描述了粉褶蕈属Entoloma 1个具有被结晶囊状体的特殊新种,并为此建立了1个新亚属。新亚属为结晶囊粉褶蕈亚属Metuloidoentoloma,新种为结晶囊粉褶蕈Entoloma metuloideum。文中有上述新亚属及新种的拉丁文及英文描述。模式标本(HMIGD 18773)采于广东省南岭国家级自然保护区,保藏于广东省微生物研究所真菌标本室(HMIGD)内。     

粉褶蕈属—新亚属和一新种

本文描述了粉褶蕈属Entoloma1个具有被结晶囊状体的特殊新种,并为此建立了1个新亚属。新亚属为结晶囊粉褶蕈亚属Metuloidoentoloma,新种为结晶囊粉褶蕈Entoloma metuloideum。文中有上述新亚属及新种的拉丁文及英文描述。模式标本（HMIGD 18773）采于广东省南岭国家级自然保护区,保藏于广东省微生物研究所真菌标本室（HMIGD）内。     

南岭国家自然保护区粉褶蕈属一新种

本文描述了采自南岭国家自然保护区的粉褶蕈属Entoloma的1个新种,该新种被命名为邓氏粉褶蕈Entoloma tengii。文中有新种的拉丁文和英文描述。模式标本(HMIGD 17615)保藏于广东省微生物研究所真菌标本室(HMIGD)内。     

南岭国家自然保护区粉褶蕈属一新种

本文描述了采自南岭国家自然保护区的粉褶蕈属Entoloma的1个新种,该新种被命名为邓氏粉褶蕈Entolom tengii。文中有新种的拉丁文和英文描述。模式标本（MIGH 17615）保藏于广东省微生物研究所真菌标本室（HMIGD）内。     

广西姑婆山及邻近地区大型真菌物种多样性

姑婆山紧邻南岭生物多样性保护优先区，孕育了丰富的生物资源。为了解该区域大型真菌物种多样性，该文采用随机踏查法对广西姑婆山自治区级自然保护区(以下简称姑婆山)及邻近地区大型真菌资源进行调查采集，并结合形态学和分子生物学方法进行物种鉴定。结果表明：(1)共发现348种大型真菌，隶属于2门6纲17目69科175属，其中包含食用菌40种、药用菌42种、毒菌7种。(2)对该区的物种组成分析表明，优势科为蘑菇科(Agaricaceae)、牛肝菌科(Boletaceae)、粉褶蕈科(Entolomataceae)和锈革菌科(Hymenochaetaceae)等9科；优势属为鹅膏属(Amanita)、靴耳属(Crepidotus)、毛皮伞属(Crinipellis)和粉褶蕈属(Entoloma)等11属。(3)共发现2个中国特有属，即脆孔菌属(Fragiliporia)和臧氏牛肝菌属(Zangia);11个中国特有种，即厚集毛菌(Coltricia crassa)、魏氏集毛菌(C.weii)、丛生粉褶蕈(Entoloma caespitosum)、极细粉褶蕈(E.praegracile)、近薄囊粉褶蕈...     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细     

Selection with two alleles and complete dominance

For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.