中国皱颖草属二新种

中国皱颖草属二新种孙必兴１钱洁２（１云南大学生物系,昆明６５００９１）（２中国科学院昆明植物研究所,昆明６５０２０４）ＴｗｏＮｅｗＳｐｅｃｉｅｓｏｆＲｈｙｔａｃｈｎｅ（Ｇｒａｍｉｎｅａｅ）ｆｒｏｍＣｈｉｎａＳＵＮＢｉ－Ｘｉｎ（Ｂ．Ｘ．Ｓｕｎ）１ＱＩＡ...     

五种栎属植物订正

五种栎属植物订正周浙昆（中国科学院昆明植物研究所，昆明６５０２０４）ＮｏｔｅｓｏｎＦｉｖｅＱｕｅｒｃｕｓｆｒｏｍＣｈｉｎａＺＨＯＵＺｈｅ－Ｋｕｎ（ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＴｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅ...     

牛耳枫果实中的生物碱成分

ＫｅｙｗｏｒｄｓＤａｐｈｎｉｐｈｙｌａｃｅａｅ,Ｄａｐｈｎｉｐｈｙｌｕｍｃａｌｙｃｉｎｕｍ,Ａｌｋａｌｏｉｄｓ牛耳枫果实中的生物碱成分叶海亚２聂晶磊１陈昌祥１郝小江１（１中国科学院昆明植物研究所植物化学开放研究实验室,昆明６５０２０４）（２新疆师范...     

五味子的食用药用价值与开发利用

五味子的食用药用价值与开发利用邵则夏（云南省林业科学院,昆明６５０２０４）五味子为五味子科（Ｓｃｈｉｓａｎｄｒａ）。本科二属：南五味子属（Ｋａｄｓｕｒａ）和五味子属（ｓｃｈｉｓａｎｄｒａ）。约５０种,产亚洲东南部和北美南部。我国二属,约３０种,产东北...     

金平哥纳香种子的化学成分

金平哥纳香种子的化学成分穆青１李朝明１孙汉董１郑惠兰２陶国达２（１中国科学院昆明植物研究所植物化学开放实验室,昆明６５０２０４）（２中国科学院西双版纳热带植物园,云南勐腊６６６３０３）ＴｈｅＣｈｅｍｉｃａｌＣｏｎｓｔｉｔｕｅｎｔｓｏｆＧｏｎｉｏｔｈ...     

景天科新分类群

景天科新分类群＊庄璇（中国科学院昆明植物研究所，昆明６５０２０４）ＮＥＷＴＡＸＡＯＦＣＲＡＳＳＵＬＡＣＥＡＥＺｈｕａｎｇＸｕａｎ（Ｈ．Ｃｈｕａｎｇ）（ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，...     

云南锡兰莲属一新变种

云南锡兰莲属一新变种费勇（中国科学院昆明植物研究所，昆明６５０２０４）ＡＮＥＷＶＡＲＩＥＴＹＯＦＮＡＲＡＶＥＬＩＡＦＲＯＭＹＵＮＮＡＮＦｅｉＹｏｎｇ（ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，...     

云南兰科二新种

云南兰科二新种刘方媛（中国科学院昆明植物研究所，昆明６５０２０４）ＴＷＯＮＥＷＳＰＥＣＩＥＳＯＦＯＲＣＨＩＤＡＣＥＡＥＦＲＯＭＹＵＮＮＡＮＬＩＵＦａｎｇ－Ｙｕａｎ（ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃ...     

中国紫堇属新分类群

中国紫堇属新分类群＊苏志云（中国科学院昆明植物研究所，昆明６５０２０４）ＮＥＷＴＡＸＡＯＦＣＯＲＹＤＡＬＩＳＦＲＯＭＣＨＩＮＡＳｕＺｈｉｙｕｎ（ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅ，Ｋｕｎｍ...     

云南山茶科新种和新变种

云南山茶科新种和新变种＊闵天禄（中国科学院昆明植物研究所，昆明６５０２０４）ＮＥＷＳＰＥＣＩＥＳＡＮＤＶＡＲＩＥＴＩＥＳＯＦＴＨＥＡＣＥＡＥＦＲＯＭＹＵＮＮＡＮＭｉｎｇＴｉｅｎｌｕ（ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＣｈｉｎｅｓｅＡｃ...     

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.