中国花天牛亚科三新种记述（鞘翅目：天牛科）

训国花天牛亚科３新种－－黑角瘤花天牛Ｇａｕｒｏｔｉｎａ ｎｉｇｒｏａｎｔｅｎａｔａ,ｓｐ．ｎｏｖ．,青海皮花一在牛Ｒｈａｇｉｕｍ ｑｉｎｇｈａｉｅｎｓｉｓ,ｓｐ．ｎｏｖ．,四面山华花天牛Ｓｉｎｏｓｔｒａｎｇａｌｉｓｓｉｍｉａｎｓｈａｎａ,ｓｐ．ｎｏｖ．。模式标本存西南农业大学昆虫标本馆。     

沟胫天牛族三新种记述(鞘翅目:天牛科:沟胫天牛亚科)

记述了沟胫天牛亚科沟胫天牛族Ａｇｎｉｎｉ３新种,即双斑齿胫天牛Ｐａｒａｌｅｐｒｏｄｅｒａ ｂｉｍａｃｕｌａｔａ ｓｐ．ｎｏｖ．,云南棱柄天牛Ｎａｎｏｈａｍｍｕｓ ｙｕｎｎａｎａ ｓｐ．ｎｏｖ．和白斑肖墨天牛Ｘｅｎｏｈａｍｍｕｓ ａｌｂｏｍａｃｕｌａｔａ ｓｐ．ｎｏｖ．。新种模式标本保存于西南农业大学昆虫标本馆。     

中国沟胫天牛亚科一新属及一新种（鞘翅目：天牛科）

本文记述天牛科沟胫天牛亚科１新属，球胸天牛属Ｇｉｂｂｏｈａｍｍｕｓｇｅｎ．ｎｏｖ．和１新种：缩颈球胸天牛Ｇｉｂｂｏｈａｍｍｕｓｓｔｒｉｃｔｉｃｏｌｌｉｓｓｐ．ｎｏｖ。     

中国污天牛属二新种记述(鞘翅目:天牛科)

记述了中国污天牛属Ｍｏｒｃｈｏｔｙｐａ ２新种，即斑胸污天牛Ｍ．ｎｉｇｒｉｃｏｌｌｉｓ Ｗａｎｇ ｅｔ Ｊｉａｎｇ，ｓｐ．ｎｏｖ．和瘤胸污天牛Ｍ．ｔｕｂｅｒｃｕｌｉｃｏｌｌｉｓ Ｗａｎｇ ｅｔ Ｊｉａｎｇ，ｓｐ．ｎｏｖ。模式标本保存在西南农业大学昆虫标本馆。     

中国泥色天牛属Uraecha Thomson分类研究（鞘翅目：天牛科：沟胫天 …

记述泥色天牛属Ｕｒａｅｃｈａ的主要特征及地理颁由,并报道１新种：龙州泥色天牛Ｕｒａｅｃｈａ ｌｏｎｇｚｈｏｕｅｎｓｉｓ,ｓｐ．ｎｏｖ．,编制了我国已知９种的检索表。新种的模式标本保存在西南农业大学听话纱昆虫标本馆。     

中国天牛科二新记录种

本文记述采自中国吉林的花天牛亚科Ｌｅｐｔｕｒｉｎａｅ中国２新记录种,即显突花天牛属Ｍａｃｒｏｐｉｄｏｎｉａ的红胸显突花天牛Ｍ．ｒｕｆｉｃｏｌｉｓＰｉｃ和宽翅花天牛属Ｊｕｄｏｌｉｄｉａ的庞氏宽翅花天牛Ｊ．ｂａｎｇｉ（Ｐｉｃ）。     

中国四川省有瓣蝇类三新种：双翅目：麻蝇总科,蝇总科

本文报道四川省有瓣蝇类３新种,小口瘦粉蝇Ｄｅｘｏｐｏｌｌｅｎｉａｐａｒｖｉｏｓｔｉａｓｐ．ｎｏｖ（丽蝇科）齿腹粪蝇Ｓｃａｔｈｏｐｈａｇａｏｄｏｎｔｏｓｔｅｒｎｉｔａｓｐ．ｎｏｖ（粪蝇科）,橙须重毫蝇Ｄｉｃｈａｅｔｏｍｙｉａｐａｌｐｉａｕｒａｎｔｉａｃａｓｐ．ｎｏｖ（蝇科）模式标本存北京军事医学科学院医学昆虫标本馆。     

湖南小毛瓢虫属三新记述：鞘翅目：瓢虫科

本文记述小毛瓢虫属ＳｃｙｍｎｕｓＫｕｇｅｌａｎｎ小瓢虫亚属Ｓｃｙｍｎｕｓ（Ｐｕｌｌｕｓ）Ｍｕｌｓａｎｔ三新种：枝角小瓢虫Ｓｓｙｍｎｕｓ（Ｐｕｌｌｕｓ）ｃｌａｄｏｃｅｒｕｓｓｐ．ｎｏｖ．,鞭丝小瓢虫Ｓｃｙｍｎｕｓ（Ｐｕｌｌｕｓ）ｍａｓｔｉｇｏｉｄｅｓｓｐ．ｎｏｖ．,肾斑小瓢虫Ｓｃｙｍｎｕｓ（Ｐｕｌｌｕｓ）ｎｅｐｈｒｏｓｐｉｕｌｓｓｐ．ｎｏｖ．。     

云南天牛科三新种记述：鞘翅目：天牛科

记述了采自云南的沟胫天牛亚科３新种：齿尾毡天牛Ｔｈｙｌａｃｕｓｄｅｎｔｉｐｅｎｎｉｓ、黑斑灰天牛Ｂｌｅｐｅｐｈａｅｕｓｎｉｇｒｏｓｔｉｇｍａ和云南刺锦天牛Ｓｔｅｒｎｏｈａｍｍｕｓｙｕｎｎａｎａ。其中,刺锦天牛属ＳｔｅｒｎｏｈａｍｍｕｓＢｒｅｕｎｉｎｇ为我国首次记载。新种模式标本保存于西南农业大学昆虫标本馆。     

神农架林区皿蛛科蜘蛛五新种记述（蛛形纲：蜘蛛目）

本文记述在湖北省神农架林区采到的皿蛛科皿蛛亚科蜘蛛５新种：月晕斑皿蛛,新种Ｌｅｐｔｈｙｐｈａｎｔｅｓ ｈａｌｏｎａｔｕｓ ｓｐ．ｎｏｖ．;山地珍蛛,新种Ｍａｃｒａｒｇｕｓ ａｌｐｉｎｕｓ ｓｐ．ｎｏｖ。;镰蛛儒蛛,新种Ｍｅｉｏｎｅｔａ ｆａｌｃａｔａ ｓｐ．ｎｏｖ．;沼泽侏儒蛛,新种Ｍｅｉｏｎｅｔａ ｐａｌｕｓｔｒｉｓ ｓｐ．ｎｏｖ．;二叶玲蛛,新种Ｐａｒａｍｅｉｏｎｅｔａ ｂｉｌｏｂａｔａ ｓｐ     

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.     

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     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen derAlismataceae,Liliaceae, Juncaceae,Cyperaceae, Poaceae undAraceae

Some closely related members of the monocotyledonous familiesAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae andAraceae with variable modes of pollination (insect- and wind-pollination) were studied in relation to the ultrastructure of pollenkitt and exine (amount, consistency and distribution of pollenkitt on the surface of pollen grains). The character syndromes of pollen cementing in entomophilous, anemophilous and intermediate (ambophilous or amphiphilous) monocotyledons are the same in principal as in dicotyledons. Comparing present with former results one can summarize: 1) The pollenkitt is always produced in the same manner by the anther tapetum in all angiosperm sub-classes. 2) The variable stickiness of entomophilous and anemophilous pollen always depends on the particular distribution and consistency of the pollenkitt, but not its amount on the pollen surface. 3) The mostly dry and powdery pollen of anemophilous plants always contains a variable amount of inactive pollenkitt in its exine cavities. 4) A step-by step change of the pollen cementing syndrome can be observed from entomophily towards anemophily. 5) From the omnipresence of pollenkitt in all wind-pollinated angiosperms studied one can conclude that the ancestors of anemophilous angiosperms probably have been zoophilous (i.e. entomophilous) throughout.

     

Identification and Characterization of the First Equine Parainfluenza Virus 5

正Dear Editor,Parainfluenza virus 5 (PIV5), known as canine parainfluenza virus in the veterinary field, is a negative-sense,nonsegmented, single-stranded RNA virus belonging to the Paramyxoviridae family (Chen 2018). The virus was first reported in primary monkey kidney cells in 1954 (Hsiung1972), then it has been frequently discovered in various     

Pathogenic Characterization and Full Length Genome Sequence of a Reassortant Infectious Bursal Disease Virus Newly Isolated in Pakistan

<正>Dear Editor,Infectious bursal disease (IBD) is one of the most important diseases of the poultry. The IBD virus (IBDV), a nonenveloped virus belonging to the Birnaviridae family with a genome consisting of two segments of double-stranded RNA (segments A and B), targets B lymphocytes of bursa of Fabricious leading to immunosuppression. In Pakistan,poultry farming is the second biggest industry and IBD is the second biggest disease threating the poultry sector.However, there is limited genome information of IBDV