突大叶蝉属三新种：（同翅目：叶蝉总科）

本文记述同翅目Ｈｏｍｏｐｔｅｒａ叶蝉总科Ｃｉｃａｄｅｌｌｏｉｄｅａ大叶蝉科Ｃｉｃａｄｅｌｌｉｄａｅ突大叶蝉属Ｇｕｎｕｎｇｉｄｉａ三新种。红颜突大叶蝉Ｇｕｎｕｎｇｉｄｉａ ｒｕｎｕｎｇｉｄｉａ ｒｕｂｅｓｃｅｎｓ ｓｐ．ｎｏｖ．,锈面突大叶蝉Ｇ．ｒｕｂｉｇｉｎｏｓｅ ｓｐ．ｎｏｖ．与白翅突大叶蝉Ｇ．ａｌｂａｔａ ｓｐ．ｎｏｖ．。采自中国南方。     

隐脉叶蝉族一新属新种(同翅目:叶蝉科:隐脉叶蝉亚科)

本文记述隐脉叶蝉族１新属,凹片叶蝉属Ｃｏｎｃａｖｅｐｌａｎａ ｇｅｎ．ｎｏｖ．,１新种,端刺凹片叶蝉Ｃ．ｓｐｉｎａｔａ ｓｐ．ｎｏｖ．,２新组合,红线凹片叶蝉Ｃ．ｒｕｆｏｌｉｎｅａｔａ（Ｋｕｏｈ）,ｃｏｍｂ．ｎｏｖ．和三带凹片叶蝉Ｃ．ｔｒｉｆａｓｃｉａｔａ（Ｈｕａｎｇ）,ｃｏｍｂ．ｎｏｖ．,模式标本保存于贵州农学院。     

脊翅叶蝉族一新属一新种：同翅目：叶蝉科：缘脊叶蝉亚科

本文记述中国缘脊叶蝉亚科脊翅叶蝉族１新属－丽斑叶蝉属Ｒｏｘａｓｅｌｌａｎａｇｅｎ．ｎｏｖ．及１新种－星茎丽斑叶蝉Ｒｏｘａｓｅｌｌａｎａｓｔｅｌｌａｔａｓｐ．ｐ．ｎ．。     

隐脉叶蝉亚科一新属一新种（同翅目：叶蝉科）

本文记述隐脉叶蝉亚科新属－平额叶蝉属Ｆｌａｔｆｒｏｎｔａ,ｇｅｎ．ｎｏｖ．,及１新种叉突平额叶蝉Ｆｌａｔｆｒｏｎｔａ ｐｒｏｎｇａ,ｓｐ．ｎｏｖ．。模式标本保存于贵州农学院。     

中国片头叶蝉属二新种（同翅目∶叶蝉科∶耳叶蝉亚科）

记述我国叶蝉科耳叶蝉亚科片头叶蝉属２新种：赤缘片头叶蝉Ｐｅｔａｌｏｃｅｐｈａｌａ ｒｕｆａ Ｃｅｎ ｅｔ Ｃａｉ，ｓｐ．ｎｏｖ．、单色片头叶蝉Ｐｅｔａｌｏｃｅｐｈａｌａ ｕｎｉｃｏｌｏｒ Ｃｅｎ ｅｔ Ｃａｉ，ｓｐ．ｎｏｖ．。新种模式标本保存在安徽农业大学昆虫标本室。     

贵州圆痕叶蝉亚科二新种（同翅目：叶蝉科）

本文记述贵州圆痕叶蝉亚科２新种,即钩淡脉叶蝉Ｊａｐａｎａｇａｌｌｉａｈａｍａｔａｓｐ．ｎｏｖ．和梵净锥茎叶蝉Ｏｎｕｋｉｇａｌｌｉａｆａｎｊｉｎｇｅｎｓｉｓｓｐ．ｎｏｖ模式标本保存在贵州农学院植物保护系。     

横脊叶蝉科－新属三新种（同翅目：叶蝉总科）

本文记述横脊叶蝉科Ｅｖａｃａｎｔｈｉｄａｅ１新属,凸冠叶蝉属Ｃｏｎｖｅｘａｎａｇｅｎ．ｎｏｖ．,３新种：黑额凸冠叶蝉Ｃｏｎｖｅｘａｎａｎｉｇｒｉｆｒｏｎｔａｓｐ．ｎｏｖ．;白脊凸冠叶蝉Ｃｏｎｖｅｘａｎａａｌｂｉｃａｒｉｎａｔａｓｐ．ｎｏｖ．;红色凸冠叶蝉Ｃｏｎｖｅｘａｎａｒｕｆａｓｐ．ｎｏｖ．。详细描述新属的外部形态及雄性外生殖器特征,并与近似属ＯｎｕｋｉａＭａｔｓｕｍｕｒａ１９１２相比较。     

河南伏牛山缘脊叶蝉亚科种类记述：同翅目：叶蝉科

本文论述河南省伏牛山缘脊叶蝉亚科３属５种,其中包括１新属：管茎叶蝉属Ｆｉｓｔｕｌａｔｕｓ ｇｅｎ．ｎｏｖ．和３新种：中华管茎叶蝉Ｆｉｓｔｕｌａｔｕｓ ｓｉｎｅｎｓｉｓ ｓｐ．ｎｏｖ．河南胫槽叶蝉Ｄｒａｂｅｓｃｕｓ ｈｅｎａｎｅｎｓｉｓ ｓｐ．ｎｏｖ．细茎胫槽叶蝉Ｄｒａｂｅｓｃｕｓ ｍｉｎｉｐｅｎｉｓ ｓｐ．ｎｏｖ。此外还厘订新异２个。新种模式标本分别保存在中国农业大学,中国科学院动物研究所,中山大     

中国横脊叶蝉亚科二新属三新种：同翅目：叶蝉科

本文记述中国横脊叶蝉亚科２新属──皱背叶蝉属ＳｔｒｉａｔａｎｕｓＬｉｅｔＷａｎｇ、突脉叶蝉属ＲｉｓｅｖｅｉｎｕｓＬｉ和３新种──曲突皱背叶蝉ＳｔｒｉａｔａｎｕｓｃｕｒｖａｔａｎｕｓＬｉｅｔＷａｎｇ;齿突皱背叶蝉ＳｔｒｉａｔａｎｕｓｄｅｎｔａｔｕｓＬｉｅｔＷａｎｓ;西藏皱背叶蝉ＳｔｒｉａｔａｎｕｓｔｉｂｅｔａｅｎｓｉｓＬｉ及１新组合──中华突脉叶蝉Ｒｉｓｅｖｅｉｎｕｓｓｉｎｅｎｓｉｓ（Ｊａｃｏｂｉ）。模式标本分别存放在贵州农学院、西北农业大学昆虫博物馆、中国科学院动物研究所和上海昆虫研究所昆虫标本室。     

中国大叶蝉科一新记录属及一新种一新组合（同翅目：叶蝉总科）

记述大叶科１中国新记录属－长冠叶蝉属Ｓｔｅｎａｔｋｉｎａ Ｙｏｕｎｇ及１新种－双斑长冠叶蝉Ｓｔｅｎａｔｋｉｎａ ｂｉｍａｃｕｌａｔａ,ｓｐ,ｎｏｖ．和１新种组合－角突长冠叶蝉Ｓｔｅｎａｔｋｉｎａ ａｎｇｕｓｔａｔａ,ｃｏｍｂ,ｎｏｖ．模式标本保存在贵州大学昆虫研究所。     

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