四川散白蚁属六种白蚁新纪录

2008～2011年间,对四川省宜宾市白蚁种类进行调查,发现了6种散白蚁四川新纪录——圆唇散白蚁Reticulitermes labralis Hsia et Fan、细颚散白蚁Reticulitermes leptomandibularis Hsia et Fan、细颏散白蚁Reticulitermes leptogulus Ping et Xu、黄胸散白蚁Reticulitermes flaviceps(Oshima)、舌唇散白蚁Reticulitermes lingulatus Ping和卵唇散白蚁Reticulitermes ovatilabrum Xia et Fan,将四川省散白蚁属白蚁记录种类由6种增加至12种,将四川省白蚁记录种类由62种增加至68种。     

湖北省散白蚁属三新种(等翅目:鼻白蚁科)

本文首次报道湖北省散白蚁属三新种。这三新种和广泛分布于我国东南地区的Reticulitermes flaviceps(Oshima)和东北地区的R.speratus(Kolbe)两常见种均较近缘。从形态特征上可看出它们和两常见种在华中地区演化的过渡性状。通过湖北标本和河南省科学院王治国先生惠赠大量河南标本的初步鉴定,R.flaviceps和R.spe-     

云南蛮白蚁属及钩白蚁属四新种（等翅目：白蚁科）

1.勐仓蛮白蚁Microtermes menglunensis Zhu et Huang 新种 兵蚁(图Ⅰ:1—8)     

云南白蚁二新种：等翅目：白蚁科

本文描述产于云南的白蚁科２新种：章凤马歪白蚁Ｍａｌａｙｓｉｏｃａｐｒｉｔｅｒｍｅｓ ｚｈａｎｇｆｅｎｇｅｒｓｉｓ ｓｐ．ｎ．、江城瘤歪白蚁Ｍｉｒｏｃａｐｒｉｔｅｒｍｅｓ ｊｉａｎｇｃｈｅｎｇｅｒｓｉｓ ｓｐ．ｎ。在读者讨论中,作者等认为,李桂祥等描述的中国马歪白蚁Ｍ．ｓｉｎｉｃｕｓ Ｌｉ ｅｔ Ｘｉａｏ应转移入华歪白蚁属Ｓｉｎｏｃａｐｒｉｔｅｒｍｅｓ Ｐｉｎｇ ｅｔ Ｘｕ,新组合为中国华歪白蚁Ｓｉ     

象白蚁属一新种：等翅目：白蚁科,象白蚁亚科

本文记述我国浙江省龙王山自然保护区等翅目白蚁属一新种,安吉象白蚁Ｎａｓｕｔｉｔｅｒｍｅｓａｎｊｉｅｎｓｉｓｓｐ．ｎｏｖ．。     

湖北省等翅目三新种

本文记述湖北省等翅目三新种,毛唇散白蚁Reticulitermes tricholabtalis sp.nov.湖北散白蚁Reticulitermes hubeiensis sp.nov.和近圆唇散白蚁Reticulitermes perilabralis sp.nov.。所有正模标本均保存于广东省昆虫研究所。     

等翅目蛮白蚁属钩白蚁属的地理分布及云南新种记述

文章报道了等翅目蛮白蚁属Microtermes Wasmann和钩白蚁属Ancistrotermes Silveastri的地理分布和云南新种。作者认为,该二属类群随着与非洲分离的印度板块在始新世中期与西藏连接后,逐渐形成现今包括我国云南等地域的地理分布。文中描述了蛮白蚁属2新种——曼庄蛮白蚁Microtemes mangahuangensis,勐捧蛮白蚁M.mengpengensis;并首次报道了分布在我国云南的钩白蚁属及2新种——河口钩白蚁Ancistrotermes hekouensis,孟连钩白蚁A.menglianensis。     

云南大白蚁属一新种（等翅目：白蚁科）

我国已知大白蚁属１８种,其中仅１种属于大,中,小（兵蚁,工蚁）三态类型,由李桂祥,平正明定名为三型大白蚁。作者等于１９９４年,在云南省南亚热带地区,发现另一三态类型大白蚁,定名为箕头大白蚁新种。     

散白蚁属两新种(等翅目:鼻白蚁科)

中国散白蚁属种类十分丰富,已发表的种类近20种,分属两个亚属,近年来湖南省林业部门结合普查工作又采得不少白蚁标本,经整理鉴定,其中鼻白蚁科的散白蚁属有两个新种。均属于额白蚁亚属。现描述如下。模式标本保存于中国科学院动物研究所。 平江散白蚁Reticulitermes(Frontotermes)pingjiangensis Tsai et Peng新种 兵蚁(图1—5)体中型,头部橙黄色,上颚棕褐色,颚基赤黄色,触角堤脊褐黄色,触角及胸部背板乳黄色,腹部色泽浅淡,体被小毛。     

中国大白蚁亚科壤白蚁新属新种（等翅目：白蚁科）

壤白蚁属Parahy potermes Zhu et Huang,新属 模式种:曼允壤白蚁Parahy potermes manyunensis,新种。 属征:兵蚁头近卵圆形,头背面被毛稀少,两侧缘于触角前骤然狭缩,头中部最宽,后缘宽圆,头背面中部明显隆起;左上颚内缘中部第1缘齿上方具2—3枚小齿。 比较与讨论:本新属与地白蚁属Hypotermes Holmgren较接近。但Hypotermes头两侧缘触角前不呈狭缩状;左上颚第1缘齿上方不具锯齿状小齿;头背面中部呈弧状隆起。     

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.     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

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.