樟科柔毛润楠正确名称的考订

在确认润楠属（Machilus Nees）应作为一独立属后,根据《国际植物命名法规》,恢复柔毛润楠的正确名称应为Machilus villosa（Roxb．）Hook．f．     

长体茧蜂属中国五新记录种

长体茧蜂属中国五新记录种ＮＥＷＲＥＣＯＲＤＳＯＦＭＡＣＲＯＣＥＮＴＲＵＳＣＵＲＴＩＳ（ＨＹＭＥＮＯＰＴＥＲＡ：ＢＲＡＣＯＮＩＤＡＥ：ＭＡＣＲＯＣＥＮＴＲＩＮＡＥ）ＦＲＯＭＣＨＩＮＡ￥长体茧蜂属ＭａｃｒｏｃｅｎｔｒｕｓＣｕｒｔｉｓ,１８３３隶于茧蜂科长...     

中国寄螨属一新纪录（蜱螨亚纲：寄螨科）

中国寄螨属一新纪录（蜱螨亚纲：寄螨科）ＡＮＥＷＲＥＣＯＲＤＯＦＴＨＥＧＥＮＵＳＰＡＲＡＳＩＴＵＳＦＲＯＭＣＨＩＮＡ（ＡＣＡＲＩ：ＰＡＲＡＳＩＴＩＤＡＥ）￥ＷａｎｇＺｉｃｕｎ;ＭａＬｉｍｉｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＥｎｄｅｒｎｉｃＤｉｓｅａｓｅＣｏｎ...     

中国果瓣螺属─新纪录（肺螺亚纲：基眼目：耳螺科）

中国果瓣螺属─新纪录（肺螺亚纲：基眼目：耳螺科）ＡＮＥＷＲＥＣＯＲＤＯＦＣＡＲＹＣＨＩＵＭＦＲＯＭＣＨＩＮＡ（ＰＵＬＭＯＮＡＴＡ：ＢＡＳＯＭＭＡＴＯＰＨＯＲＡ：ＥＬＬＯＢＩＩＤＡＥ）￥ＣＨＥＮＤｅ－ｎｉｕ（ＩｎｓｔｉｔｕｔｅｏｆＺｏｏｌｏｇｙ,Ａｃａ...     

云南山茶属茶组一新变种

云南山茶属茶组一新变种张芳赐（云南农业大学,昆明６５０２０１）ＡＮＥＷＶＡＲＩＥＴＹＯＦＴＨＥＧＥＮＵＳＣＡＭＥＬＬＩＡＳＥＣＴ．ＴＨＥＡＦＲＯＭＹＵＮＮＡＮＺｈａｎｇＦａｎｇｃｉ（ＡｇｒｉｃｕｌｔｕｒａｌＵｎｉｖｅｒｓｉｔｙｏｆＹｕｎｎａｎ,Ｋｕｎ...     

广西狸尾豆属一新种

广西狸尾豆属一新种沙文兰（广西天然药物研究中心,南宁５３００２２）关键词广西狸尾豆ＡＮＥＷＳＰＥＣＩＥＳＯＦＵＲＡＲＩＡＦＲＯＭＧＵＡＮＧＸｌ￥ｓｈａＷｅｎｌａｎ（ＧｕａｎｇｘｉＲｅｓｅａｒｃｈＣｅｎｔｒｅｏｆＮａｔｕｒａｌＭａｔｅｒｉａＭｅｄｉｃａ...     

广西狸尾豆属一新种

广西狸尾豆属一新种沙文兰（广西天然药物研究中心,南宁５３００２２）关键词广西狸尾豆ＡＮＥＷＳＰＥＣＩＥＳＯＦＵＲＡＲＩＡＦＲＯＭＧＵＡＮＧＸｌ￥ｓｈａＷｅｎｌａｎ（ＧｕａｎｇｘｉＲｅｓｅａｒｃｈＣｅｎｔｒｅｏｆＮａｔｕｒａｌＭａｔｅｒｉａＭｅｄｉｃａ...     

贵州冷蕨属一新种

贵州冷蕨属一新种王筱英王培善（贵州科学院,贵阳５５０００１）ＡＮＥＷＳＰＥＣＩＥＳＯＦＣＹＳＴＯＰＴＥＲＩＳ（ＡＴＨＹＲＩＡＣＥＡＥ）ＦＲＯＭＧＵＩＺＨＯＵＷａｎｇＸｉａｏｙｉｎｇ,ＷａｎｇＰｅｉｓｈａｎ（ＧｕｉｚｈｏｕＡｃａｄｅｍｙｏｆＳｃｉｅｎｃ...     

香港润楠属植物的分类研究

本文记载了香港润楠属植物共１１种,其中包括２个香港新记录（Ｍ．ｌｅｐｔｏｐｈｙｌａＨａｎｄ．－Ｍａｚ．,Ｍ．ｒｏｂｕｓｔａＷ．Ｗ．Ｓｍ．）,改正了４个过去被误定的植物种名。     

峨眉山艾纳香属一新种

峨眉山艾纳香属一新种祝正银（四川省中药学校,四川峨眉山６１４２０１）ＡＮＥＷＳＰＥＣＩＥＳＯＦＢＬＵＭＥＡＦＲＯＭＥＭＥＩＳＨＡＮＺｈｕＺｈｅｎｇｙｉｎ（ＳｉｃｈｕａｎｇｃｈｏｌｏｆＣｈｉｎｅｓｅＭａｔｅｒｉａＭｅｄｉｃａ,Ｅｍｅｉｓｈａｎ,Ｓｉｃｈ...     

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