中国方颜叶蜂属(膜翅目,叶蜂科)种团二新种

记述方颜叶蜂属Pachyprotasis pallidistigma种团2新种:周氏方颜叶蜂Pachyprotasis zhoui Wei et Zhong,sp. nov.和稻城方颜叶蜂Pachyprotasis daochengensis Wei et Zhong, sp. nov..新种模式标本保存在中南林业科技大学昆虫模式标本室.     

中国方颜叶蜂属(膜翅目,叶蜂科)二新种

记述采自云南及四川省的方颜叶蜂属Pachyprotasis两新种:郑氏方颜叶蜂Pachyprotasis zhengi Wei et Zhong,sp.nov.和程氏方颜叶蜂Pachyprotasis chenghanhuai Wei et Zhong,sp.nov..新种模式标本保存在中南林业科技大学昆虫模式标本室.     

中国方颜叶蜂属(膜翅目,叶蜂科)种团二新种

记述中国方颜叶蜂属erratica种团二新种:短刃方颜叶蜂Pachyprotasis breviserrula Wei et Zhong,sp.nov.和弱齿方颜叶蜂Pachyprotasis obxurodentellsa Wci et Zhong,sp.nov..新种模式标本保存在中南林业科技大学昆虫模式标本室.     

秦岭方颜叶蜂属(膜翅目,叶蜂科)两新种

记述方颜叶蜂属Pachyprotasis新种,斑背板方颜叶蜂Pachyprotasis maculotergitis sp.nov.,本种腹部第3～5节背板大部橘褐色,第3～6节背板中部具白斑,以此得名;陕西方颜叶蜂Pachyprotasis shanxiensis sp.nov.,本种以正模标本采集地命名.新种模式标本保存在中南林业科技大学昆虫模式标本室.     

中国钩瓣叶蜂属Macrophya sanguinolenta种团两新种(膜翅目,叶蜂科)

记述中国钩瓣叶蜂属Macrophya DahIbom红足种团Macrophya sanguinoknta group 2新种,花跗钩瓣叶蜂Macrophya coloritarsalina Wei et Li,sp.nov.和长柄钩瓣叶蜂Macrophya longipetiolata Wei et Zhong,sp.nov..前者属于红足种团的中环白亚种团M.depressina subgroup,后者属于红足种团的红股红胫亚种团M.sanguinolenta subgroup.新种模式标本保存于中南林业科技大学昆虫模式标本室.     

中国真片叶蜂属(膜翅目,叶蜂科)四新种

记述采自中国河南的真片叶蜂属4新种:短室真片叶蜂Eutomostethus brevicellus Wei et Niu,sp.nov.,狭突真片叶蜂Eutomostethus lineituberculus Wei et Niu,sp.nov.,白腹真片叶蜂Eutomostethus albiventralinus Wei et Niu,sp.nov.和假亮真片叶蜂Eutomostethus pseudometallicus Wei et Niu,sp.nov..新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室.     

中国叶蜂属(膜翅目,叶蜂科)三新种

记述采自中国河南、陕西、浙江的叶蜂科叶蜂亚科叶蜂属3新种:吕氏横斑叶蜂Tenthredo lunani Wei et Niu,sp.nov.,三斑槌腹叶蜂Tenthredo dolichomisca Wei et Niu,sp.nov.,黑腰白端叶蜂Tenthredo pararubiapicilina Wei et Niu,sp.nov.。新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室。     

中国钩瓣叶蜂属(膜翅目,叶蜂科)Macrophya imitator种团两新种

记述采自中国四川和吉林钩瓣叶蜂属Macrophya imitator种团2新种:康定钩瓣叶蜂Macrophya kangdingensis Wei et Li,sp.nov.和卜氏钩瓣叶蜂Macrophya bui Wei et Li,sp.nov..新种模式标本保存于中南林业科技大学昆虫模式标本室.     

中国叶蜂属(膜翅目,叶蜂科)OBSOLETA-MESOMELA种团二新种

记述采自中国境内叶蜂属obsoleta-mesomela种团2新种:粗纹窄突叶蜂Tenthredo paraobsoleta Wei et Liu,sp.nov.和粗纹低突叶蜂Tenthredo pseudomesomela Wei et Li,sp.nov..前者属于obsoleta亚种团,后者属于mesomela亚种团.新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室.     

中国钩瓣叶蜂属三新种(膜翅目,叶蜂科)

记述采自中国甘肃的钩瓣叶蜂属3新种,肿跗钩瓣叶蜂Macrophya incrassitarsalia Wei et Wu,sp.nov.,黑体钩瓣叶蜂Macrophya melanosomata Wei et Xin,sp.nov.和白转钩瓣叶蜂Macrophya leucotrochanterata Wei et Li,sp.nov..新种模式标本保存于中南林业科技大学昆虫模式标本室.     

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