GENUS ANTROPHYUM KAULF.FROM CHINA AND NEIGHBORING REGIONS

ＧＥＮＵＳＡＮＴＲＯＰＨＹＵＭＫＡＵＬＦ．ＦＲＯＭＣＨＩＮＡＡＮＤＮＥＩＧＨＢＯＲＩＮＧＲＥＧＩＯＮＳＸ．Ｃ．ＺＨＡＮＧ（Ｔｈｅｈｅｒｂａｒｉｕｍ（ＰＥ）,ＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ,ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ,Ｂｅｉ...     

全球大气二氧化碳浓度升高对植物的影响

全球大气二氧化碳浓度升高对植物的影响蒋高明（中国科学院植物研究所,北京１０００４４）ＴＨＥＩＭＰＡＣＴＯＦＧＬＯＢＡＬＩＮＣＲＥＡＳＩＮＧＯＦＣＯ＿２ＯＮＰＬＡＮＴＳＪｉａｉｎｇＧａｏ－ｍｉｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ,Ａｃａｄｅｍｉａ,...     

International Young Life Scientist Programme

Ａｔｔｈｅ１８ｔｈＩｎｔｅｒｎａｔｉｏｎａｌＣｏｎｇｒｅｓｓｏｆＢｉｏｃｈｅｍｉｓｔｒｙａｎｄＭｏｌｅｃｕｌａｒＢｉｏｌｏｇｙ,Ｂｉｒｍｉｎｇｈａｍ,ＥｎｇｌａｎｄＴｈｅＩｎｔｅｒｎａｔｉｏｎａｌＵｎｉｏｎｏｆＢｉｏｃｈｅｍｉｓｔｒｙａｎｄＭｏｌｅｃｕｌａｒＢｉｏｌｏｇｙ（ＩＵＢＭＢ）,ｔｈｅＦｅｄｅｒａｔｉｏｎｏｆＥｕｒｏｐｅａｎＢｉｏｃｈｅｍｉｃａｌＳｏｃｉｅｔｉｅｓ（ＦＥＢＳ）,ａｎｄｔｈｅＢｉｏｃｈｅｍｉｃａｌＳｏｃｉｅｔｙａｎｎｏｕｎｃｅｔｈｅｓｐｏｎｓｏｒｓｈｉｐｏｆａＳｙｍｐｏｓ…     

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，...     

缘板鳖染色体组型

缘板鳖染色体组型ＴＨＥＫＡＲＹＯＴＹＰＥＯＦＬｉｓｅｍｙｓｐｕｎｃｔａｔａｐｕｎｃｔａｔａ（ＢＯＮＮＡＴＥＲＲＥ）关键词缘板鳖,染色体组型ＫｅｙｗｏｒｄｓＬｉｓｅｍｙｓｐｕｎｃｔａｔａｐｕｎｃｔａｔａ（Ｂｏｎｎａｔｅｒｒｅ）,Ｋａｒｙｏｔｙｐｅ中图分...     

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...     

植物细胞质膜氧化还原系统

植物细胞质膜氧化还原系统陈珈（北京农业大学生物学院。北京１０００９４）ＲＥＤＯＸＳＹＳＴＥＭＩＮＴＨＥＰＬＡＳＭＡＭＥＭＢＲＡＮＥＯＦＰＬＡＮＴＣＥＬＬ￥ＣｈｅｎＪｉａ（ＣｏｌｌｅｇｅｏｆＢｉｏｌｏｇｉｃａ！Ｓｃｉｅｎｃｅｓ,ＢｅｉｊｉｎｇＡｇｒｉｃ...     

生物固氮作用机理

生物固氮作用机理李佳格徐继（中国科学院植物研究所,北京１０００９３）ＭＥＣＨＡＮＩＳＭＯＦＢＩＯＬＯＧＩＣＡＬＮＩＴＲＯＧＥＮＦＩＸＡＴＩＯＮＬｉＪｉａ－ｇｅＸｕＪｉ（ＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ,ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅ...     

峨眉山艾纳香属一新种

峨眉山艾纳香属一新种祝正银（四川省中药学校,四川峨眉山６１４２０１）ＡＮＥＷＳＰＥＣＩＥＳＯＦＢＬＵＭＥＡＦＲＯＭＥＭＥＩＳＨＡＮＺｈｕＺｈｅｎｇｙｉｎ（ＳｉｃｈｕａｎｇｃｈｏｌｏｆＣｈｉｎｅｓｅＭａｔｅｒｉａＭｅｄｉｃａ,Ｅｍｅｉｓｈａｎ,Ｓｉｃｈ...     

中国对虾cDNA文库的构建

中国对虾ｃＤＮＡ文库的构建ＣＯＮＳＴＲＵＣＴＩＯＮＯＦｃＤＮＡＬＩＢＲＡＲＹＯＦＳＨＲＩＭＰＰＥＮＡＥＵＳＣＨＩＮＥＮＳＩＳ（ＣＲＵＳＴＡＣＥＡ,ＤＥＣＡＰＯＤＡ）关键词中国对虾ｃＤＮＡ文库构建ＫｅｙｗｏｒｄｓＰｅｎａｅｕｓｃｈｉｎｅｎｓｉｓ,ｃＤＮ...     

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.