中国角石蛾属四新种描述(毛翅目,角石蛾科)

记述了角石蛾科角石蛾属4新种,分别为采自广西的田林角石蛾Stenopsyche tianlinensis sp.nov.,叠尾角石蛾Stenopsyche bistratosa sp.nov.,贵州的鹿肢角石蛾Stenopsyche cervaria sp.nov.和采自陕西的细弯角石蛾Stenopsyche sinuolata sp.nov..模式标本保存于南京农业大学昆虫标本馆.     

中国缺叉多距石蛾属六新种记述(毛翅目,多距石蛾科)

研究了中国毛翅目多距石蛾科缺叉多距石蛾属种类,并报道了其中亲缘关系较近的6新种,即端截缺叉多距石蛾Polyplectropus truncatufus sp.nov.,端突缺叉多距石蛾Polyplectropus convexus sp.nov.,斧端缺叉多距石蛾Polyplectropus dolabriformis sp.nov.,颚状缺叉多距石蛾Polyplectropus mandibuliformis sp.nov.,距枝缺叉多距石蛾Polyptectropus rectangulus sp.nov.,喙端缺叉多距石蛾Polyplectropus rostriformis sp.nov..新种模式标本保存在南京农业大学昆虫标本馆.     

中国裸齿角石蛾属五新种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属Psilotreta kwantungensis种团的5新种,即弯钩裸齿角石蛾Psilotreta anfracta sp.nov.,直角裸齿角石蛾Psilotreta rectangula sp.nov.,具刺裸齿角石蛾Psilotreta spinata sp.nov.,细刺裸齿角石蛾Psilotreta tenuispina sp.nov.,以及缺肢裸齿角石蛾Psilotreta expers sp.nov.。模式标本保存于南京农业大学昆虫标本馆。     

中国弓石蛾属两新种记述(毛翅目,纹石蛾科,弓石蛾亚科)

记述了弓石蛾属2新种,分别是采自云南的三突茎弓石蛾Arctopsyche triacanthophora sp.nov.及采自四川的黄氏弓石蛾Arctopsyche huangi sp.nov..模式标本保存于南京农业大学昆虫标本馆.     

中国缺叉多距石蛾属六新种(毛翅目,多距石蛾科)

记述了缺叉多距石蛾属6新种:即圆叶缺叉多距石蛾Polyplect ropusrotundifolius sp.nov.,三歧缺叉多距石蛾Polyplectropus trifurcatus sp.nov.,三角缺叉多距石蛾Polyplectropus trigonius sp.nov.,钩状缺叉多距石蛾Polyplectropusunci formis sp.nov.,指状缺叉多距石蛾Polyplectropus digitaliformis sp.nov.,具针缺叉多距石蛾Polyplectropus aciculatus sp.nov.。新种模式标本保存于南京农业大学昆虫标本馆。     

中国裸齿角石蛾属四新种(毛翅目,齿角石蛾科)

记述我国裸齿角石蛾属,广东裸齿角石蛾种组4新种,即粗裸齿角石蛾Psilotreta grossa sp.nov.,多刺裸齿角石蛾Psilotreta horrida sp.nov.,云南裸齿角石蛾Psilotreta yunnanensis sp.nov.,以及宽扁裸齿角石蛾Psilotreta applanata sp.nov..提供了广东裸齿角石蛾种组的鉴别特征及中国种雄成虫检索表.模式标本均保存于南京农业大学昆虫标本馆.     

梳等翅石蛾属二新种记述(毛翅目:等翅石蛾科)

记述了梳等翅石蛾属2新种,即膨肢梳等翅石蛾Kisaura inflate,sp.nov.和凹背梳等翅石蛾Kisaura alveiformis,sp.nov.。     

中国裸齿角石蛾属三新种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属3新种,即脊状裸齿角石蛾Psilotreta vertebrata sp.nov.(广东)、方背裸齿角石蛾Psilotreta cuboides sp.nov.(云南)和凹入裸齿角石蛾Psilotreta excavata sp.nov.(江西)。模式标本保存于南京农业大学昆虫标本馆。     

中国弓石蛾亚科新纪录属及新种记述(毛翅目,纹石蛾科)

记述纹石蛾科弓石蛾亚科1新纪录属,美赛弓石蛾属Maesaipsyche,及1新种,即细齿美赛弓石蛾Maesaipsyche serrulata Sun et Yang ,sp.nov.(广西),其阳具缺阳基侧突而与Maesaipsyche mekongensis Mey相似,但新种中附肢背缘近端部具齿突、外侧缘具细齿.并记述绒弓石蛾属Parapsyche 1新种,即北京绒弓石蛾Parapsyche beijingensis Sun et Morse,sp.nov.(北京),该种肛上附肢与第10节完全愈合,阳具特别发达,与Parapsyche kchina Schmid相似;但新种阳茎基背突为1对瘤状突,其上着生短刺,阳茎基背突上方具1兜状结构,背面观时端部膨大成圆盘.新种模式标本保存于南京农业大学昆虫标本馆.     

中国裸齿角石蛾属二新种及一新纪录种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属2新种,二叉裸齿角石蛾Psilotreta bicruris sp.nov.和小叶裸齿角石蛾Psilotreta paulula sp.nov.;及1新纪录种,加氏裸齿角石蛾Psilotreta jaroschi Malicky,1995。新种及新纪录种模式标本保存于南京农业大学昆虫标本馆。     

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