丛赤壳科4个中国新记录种

报道了采集于山东、河南、四川和云南的丛赤壳科4个中国新记录种：乌列沃光赤壳、假赤壳、瘤顶乳突赤壳和悬钩子乳突赤壳。对我国材料的宏观和微观特征进行了详细描述和图示,并与上述种的原始描述以及ITS和28S rDNA序列进行了比较。     

新疆小圆孔壳属，锥毛壳属及座坚壳属的分类研究

本文报道了新疆子囊菌小圆孔壳属(Amphisphaerella),锥毛壳属(Coniochaeta)和座坚壳属(Rosellinia)的7个种及1个变种,即:忍冬小圆孔壳(A.xylostei),梭梭锥毛壳(C.haloxylonis),木生锥毛壳(C.ligniaria),粉被锥毛壳(C.pulveracea),毛锥毛壳(C.sordaria),附孢座坚壳(R.aquila),乳头座坚壳(R.thelena)及尖孢座坚壳大孢变种(R.apiculata var.macrospora)。其中,梭梭锥毛壳为新组合种。忍冬小圆孔壳,木生锥毛壳,乳头座坚壳及尖孢座坚壳大孢变种为我国新记录(属)种。这3个属的真菌新疆过去均未报道过,为新疆新记录属。     

新疆的刺球座属、穴壳属及普氏腔孢属

本文报道了新疆腔菌纲座囊菌目刺球座属（Ｌａｓｉｏｂｏｔｒｙｓ）、穴壳属（Ｄｏｔｈｉｏｒａ）和普氏腔孢属（Ｐｌｏｗｒｉｇｈｔｉａ）的六种子囊菌,即：忍冬刺球座菌（Ｌ．ｌｏｎｉｃｅｒａｅ）、花揪穴壳菌（Ｄ．ｓｏｒｂｉ）及其无性阶段花揪疡壳孢（Ｄｏｔｈｉｃｈｉｚａ ｓｏｒｂｉ）、茶Ｂｉａｏ子普氏腔孢菌（Ｐ．ｒｉｂｅｓｉａ）、小檗普氏腔孢菌（Ｐ．ｂｅｒｂｅｒｉｄｉｓ）、沙棘普氏腔孢菌（Ｐ．ｈｉｐｐｏｐｈａ     

采自福建的中国座壳孢菌两新记录种

两种虫生座壳孢菌包括锥形座壳孢Aschersonia turbinata和布鲁门拿维安座壳孢Aschersonia blumenaviensis,是中国新记录种。锥形座壳孢有别于该属其他成员的特征是新鲜时具有微黄白色近圆柱形的子座,不规则的孢子器产生于1个或更多个平或凹盘里,梭状的器孢子具有锥形尖端。布鲁门拿维安座壳孢最初在巴西描述,与Aschersonia flavocitrina的子座均为柠檬黄而易混淆,但是后者有更大的孢子(12–18×2μm)和更长的侧丝(140-180μm)。根据中国材料对这两个虫生真菌进行了详细描述。     

丛赤壳科5个中国新记录种

对采自安徽、河南、湖北、云南和西藏等地的丛赤壳科标本进行系统分类研究,综合形态解剖、培养性状、DNA序列和无性阶段特征,报道5个中国新记录种：肯达拉赤壳Cosmospora khandalensis,翠绿赤壳C. viridescens,剑孢新赤壳Neocosmospora protoensiformis,罗杰森假赤壳Pseudocosmospora rogersonii和瘤顶赤壳Tumenectria laetidisca,对它们的宏微观特征和菌落形态进行了描述及图示。     

中国附丝壳属研究Ⅱ.

报道了中国附丝壳属AppendiculellavonHoehnel5个种。其中野桐附丝壳AppendiculellamallotiB.SongetY.X．Hu为新种,其余4个种为我国大陆的初次报道。新种有拉丁文、中文描述和显微结构图。所有标本保藏于广东省微生物研究所标本室（HMIGD）。     

中国附丝壳属研究II．

报道了中国附丝壳属Appendiculella von Hoehnel 5个种。其中野桐附丝壳Appendiculella malloti B．Song et Y．X．Hu为新种,其余4个种为我国大陆的初次报道。新种有拉丁文、中文描述和显微结构图。所有标本保藏于广东省微生物研究所标本室(HMIGD)。     

江苏省云台山白粉菌研究Ⅳ．球针壳属一新种

报道了寄生在猕猴桃科（Actinidiaceae）猫人参ActinidiavalvataDunn上的新种连云港球针壳PhyllactinialianyungangensisS．J.Gu＆Y．S．Zhangsp．nov,新分类单位有汉文和拉丁文描述,并附有讨论。     

座隔孢属一新种

座隔孢属(Toxosporiopsis Sutton & Sellar)为腔孢纲(Coelomycetes)之一小属,已描述2种。本文报道了该属产自中国的一个新种:中国座隔孢(Toxosporiopsis sinensisW.P.Wu)。新种生于胡桃(Juglans regia L.)枯枝上,它与已知种尖顶座隔孢(Toxosporio-psis capitata Sutton & Sellar)和大孢座隔孢(Toxosporiopsis macrosperma(Cavara)Sutton& Dyko)在子座大小,产孢细胞长度,分生孢子形态、大小,侧丝长度及其外围胶质鞘的有无等特征上差别极大,故另立新种。     

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.