竹黄主要寄主植物的研究

经野外考察确认,竹黄Ｓｈｉｒａｉａ ｂａｍｂｕｓｉｃｏｌａ的寄主为短穗竹属Ｂｒａｃｈｙｓｔａｃｈｙｕｍ植物。短穗竹Ｂ．ｄｅｎｓｉｆｌｏｒｕｍ及其变种毛环短穗竹ｖａｒ．ｖｉｌｌｏｓｕｍ为其最重要的寄主,其寄主率最高,产量最大,并于近年还发现了它的另一种重要的新寄生植物白纹短穗竹Ｂ．ａｌｂｏｓｔｒｉａｔｕｍ。同时,调查研究了竹黄在不同生境、不同类型短穗竹林中的寄生状况及其自然生长发育时期,结果表明：竹     

青藏高原东缘的锈菌资源VI.柄锈菌属二新种

采自四川西部的二个柄锈菌新种,即寄生在小檗属Ｂｅｒｂｅｒｉｓ ｓｐ．上的岷山柄锈菌Ｐｕｃｃｉｎｉａ ｍｉｎｓｈａｎｅｎｓｉｓ Ｊ．Ｙ．Ｚｈｕａｎｇ ＆ Ｓ．Ｘ． Ｗｅｉ和寄生在大箭竹Ｓｉｎａｒｕｎｄｉｎａｒｉａ ｃｈｕｎｇｉｉ（Ｋｅｎｇ）Ｋｅｎｇ ｆ．上的箭竹生柄锈菌Ｐｕｃｃｉｎｉａ ｓｉｎａｒｕｎｄｉｎａｒｉｉｃｏｌａ Ｊ．Ｙ．Ｚｈｕａｎｇ ＆ Ｓ．Ｘ． Ｗｅｉ。文中对新种进行了拉丁文描述并作了     

安徽蓼属一新种——舒城蓼

舒城蓼　新种　图1ＰｏｌｙｇｏｎｕｍｓｈｕｃｈｅｎｇｅｎｓｅＺ.Ｚ.Ｚｈｏｕ,ｓｐ.ｎｏｖ.Ｆｉｇ.1ＳｐｅｃｉｅｓａｆｆｉｎｉｓＰ.ｐｕｂｅｓｃｅｎｔｉＢｌｕｍｅ,ｓｅｄｆｏｌｉｏｒｕｍｌａｍｉｎｉｓｐｒａｅｔｅｒｎｅｒｖｏｓｓｐａｒｓｅａｄｐｒｅｓｓｅｑｕｅｐｕｂｅｒｕｌｏｓｓｕｂｇｌａｂｒｉｓ,ｓｕｂｔｕｓｄｅｎｓｅｆｕｓｃｏ＿ｇｌａｎｄｕｌｏｓｏ＿ｐｕｎｃｔａｔｉｓ,ｏｃｒｅｉｓｂｒｅｖｉｓｓｉｍｅｃｉｌｉｏｌａｔｉｓ,ｓｐｉｃｉｓｄｅｎｓｉｆｌｏｒｉｓ,ｆｌｏｒｉｂｉｓｖｉｒｉｄｉ＿ａｌｂｉｄｉｓ,…     

窄颖仲彬草生物系统学研究

窄颖仲彬草Ｋｅｎｇｙｉｌｉａ ｓｔｅｎａｃｈｙｒａ（Ｋｅｎｇ） Ｊ．Ｌ． Ｙａｎｇ ,Ｙｅｎ ｅｔ Ｂａｕｍ 是分布于我国西部的一种多年生六倍体植物。将其与犬草Ｅｌｙｍｕｓ ｃａｎｉｎｕｓ（Ｌ．） Ｌ．, 鹅观草Ｒｏｅｇｎｅｒｉａ ｋａｍｏｊｉ Ｏｈｗｉ, 糙毛仲彬草Ｋ．ｈｉｒｓｕｔａ （Ｋｅｎｇ） Ｊ．Ｌ．Ｙａｎｇ,Ｙｅｎ ｅｔ Ｂａｕｍ ３ 个种进行了杂交。对亲本及杂种Ｆ１ 代花粉母细胞减数分裂中期Ｉ染色体配对行为进行了观察。减数分裂平均构型分别为： Ｅ． ｃａｎｉｎｕｓ×Ｋ． ｓｔｅｎａｃｈｙｒａ２３－７９ Ⅰ＋ ５－２０ Ⅱ＋ ０－２７Ⅲ; Ｒ．ｋａｍｏｊｉ ×Ｋ．ｓｔｅｎａｃｈｙｒａ１８－２３ Ⅰ＋ １１－６８ Ⅱ＋ ０－０６ Ⅲ＋ ０－０６ Ⅳ; Ｋ．ｈｉｒｓｕｔａ ×Ｋ．ｓｔｅｎａｃｈｙｒａ４－８３Ⅰ＋ １７－３１ Ⅱ＋ ０－５５ Ⅲ＋ ０－２０ Ⅳ＋ ０－０２ Ⅴ。根据以上结果, 结合种的形态特征, 窄颖仲彬草应从鹅观草属Ｒｏｅｇｎｅｒｉａ Ｃ． Ｋｏｃｈ 拟冰草组ＰａｒａｇｒｏｐｙｒｏｎＫｅｎｇ 中组合到仲彬草属Ｋｅｎｇｙｉｌｉａ Ｙｅｎ ｅｔ Ｙａｎｇ。     

云南槭属植物一新种

三翅槭　 (新种 )ＡｃｅｒｔｒｉａｌａｔｕｍＬ .Ｌ .Ｄｅｎｇ ,Ｋ .Ｙ .ＷｅｉｅｔＧ .Ｓ .Ｆａｎ ,ｓｐ .ｎｏｖ .Ａ ｂｕｅｒｇｅｒｉａｎｏＭｉｑ .ａｆｆｉｎｅ ,ｓｅｄｄｉｆｆｅｒｔｆｒｕｃｔｉｂｕｓｔｒｉａｌａｔｉｓ,ｒａｒｏｂｉ ｖｅｌｑｕａｄｒｉａｌａｔｉｓ ,ａｌｉｓｃｕｍｎｕｃｕｌａｂｒｅｖｉｏｒｉｂｕｓ ,1 5 - 2ｃｍｌｏｎｇｉｓ ,ｆｏｌｉｉｓｂｒｅｖｉｏｒｉｂｕｓ ,2 - 5ｃｍｌｏｎｇｉｓ.Ａｒｂｏｒ ,4 - 5ｍａｌｔａ .Ｃｏｒｔｅｘｇｒｉｓｅｕｓｖｅｌｇｒｉｓｅｏｂｒｕｎｅｕｓ .Ｆｏｌｉａｃｈａｒｔ…     

油菜叶绿体基因ndhB的序列

1　Ｓｏｕｒｃｅ　ＴｈｅｓｅｑｕｅｎｃｅｗａｓｄｅｔｅｒｍｉｎｅｄｆｒｏｍａＰＣＲ ｐｒｏｄｕｃｔ,ｗｈｉｃｈｗａｓｌｉｇａｔｅｄｔｏｐＢｌｕｅｓｃｒｉｐｔＳＫ( )ｖｅｃｔｅｒ (ｎａｍｅｄａｓｐＳＮ) ,ｆｒｏｍｔｈｅｃｈｌｏｒｏｐｌａｓｔｇｅｎｏｍｉｃＤＮＡｏｆＢｒａｓｓｉｃａｎａｐｕｓ(Ｏｉｌｓｅｅｄｒａｐｅ)ｃｖ.Ｈ1 65.2　Ｎａｍｅａｎｄｄｅｓｃｒｉｐｔｉｏｎ　Ｂｒａｓｓｉｃａｎａｐｕｓｃｈｌｏｒｏ ｐｌａｓｔｇｅｎｅｎｄｈＢｉｓ 2 4 67ｂｐｌｏｎｇｗｉｔｈｔｗｏｅｘｏｎｓｔｈａｔｅｎｃｏｄｅ 51 0ａ…     

Expression of tachykinin receptors in Xenopus oocytes injected with poly(A)~+RNA from cat dorsal root ganglion

ＴａｃｈｙｋｉｎｉｎｆａｍｉｌｙｉｓａｇｒｏｕｐｏｆｎｅｕｒｏｐｅｐｔｉｄｅｓｗｉｔｈｓｉｍｉｌａｒＣｔｅｒｍｉｎａｌｓｅｑｕｅｎｃｅｓａｎｄｒｅｌａｔｅｄｂｉｏａｃｔｉｖｉｔｉｅｓ.ＴｈｅｍａｊｏｒｔａｃｈｙｋｉｎｉｎｓｉｎｍａｍｍａｌｉａｎａｒｅｓｕｂｓｔａｎｃｅＰ(ＳＰ),ｎｅｕｒｏｋｉｎｉｎＡ(ＮＫＡ)ａｎｄｎｅｕｒｏｋｉｎｉｎＢ(ＮＫＢ).Ｃｏｒｒｅｓｐｏｎｄｉｎｇｔｏｔｈｅｓｅｐｅｐｔｉｄｅｓ,ｔｈｒｅｅｄｉｓｔｉｎｃｔｔａｃｈｙｋｉｎｉｎｒｅｃｅｐｔｏｒｓｗｅｒｅｄｉｓｃｏｖｅｒｅｄａｎｄｎ…     

日本平安竹的组织培养及快速繁殖

1　植物名称　平安竹 (Ｐｓｅｕｄｏｓａｓａｊａｐｏｎｉｃａｃｖ .ｔｓｕｔｓｕｍｉａｎａ)。2　材料类别　嫩芽。3　培养条件　诱导丛生芽培养基 :(1)ＭＳ ＫＴ 1.0ｍｇ·Ｌ- 1(单位下同 ) ＮＡＡ 0 .1 ＧＡ 0 .5 ;(2 )ＭＳ ＫＴ 2 .0 ＮＡＡ 0 .1 ＧＡ 0 .5 ;(3)ＭＳ     

中国以礼草属新分类群

本文报道了禾本科以礼草属二新种及二新变种,即稀穗以礼草ＫｅｎｇｙｉｌｉａｌａｘｉｓｔａｃｈｙａＬ．Ｂ．ＣａｉｅｔＤ．Ｆ．Ｃｕｉ,和静以礼草ＫｅｎｇｙｉｌｉａｈｅｊｉｎｇｅｎｓｉｓＬ．Ｂ．ＣａｉｅｔＤ．Ｆ．Ｃｕｉ,显芒以礼草Ｋｅｎｇｙｉｌｉａｈｉｒｓｕｔａｖａｒ．ｏｂｖｉａｒｉｓｔａｔａＬ．Ｂ．Ｃａｉ和毛鞘以礼草Ｋｅｎｇｙｉｌｉａｒｉｇｉａｄｕｌａｖａｒ．ｔｒｉｃｈｏｃｏｌｅａＬ．Ｂ．Ｃａｉ．     

淡竹叶与竹叶的原植物研究与商品鉴定

古代所用的中药淡竹叶与现在的不同,其属于竹叶的一种。本文考证认为古代的淡竹叶为刚竹属植物淡竹Ｐｈｙｌｏｓｔａｃｈｙｓｎｉｇｒａ（Ｌｏｄｄ．）Ｍｕｎｒｏｖａｒ．ｈｅｎｏｎｉｓ（Ｍｉｔｆ．）ＳｔａｐｆｅｘＲｅｎｄｌｅｒ的叶;堇竹叶可能为刚竹ＰｈｙｌｏｓｔａｃｈｙｓｂａｍｂｕｓｏｉｄｅｓＳｉｅｂ．ｅｔＺｕｃ．的叶;苦竹叶可能包括现今苦竹Ｐｌｅｏｂｌａｓｔｕｓａｍａｒｕｓ（Ｋｅｎｇ）Ｋｅｎｇｆ．及刚竹属笋味苦的一些种类的叶。对收集的２种淡竹叶及４种竹叶类商品药材性状进行了鉴定,并给出了检索表。中国是世界上竹类资源种类最多,资源面积最大的国家,开发药用竹类资源对充分利用竹类森林资源,振兴广大贫困山区经济意义重大。     

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     

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.     

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.     

Enterovirus 71 3C proteolytically processes the histone H3 N-terminal tail during infection

Highlights
1. The N-terminal tail of histone H3 is specifically cleaved during EV71 infection.
2. Viral protease 3C is identified as a protease responsible for proteolytically processing the N-terminal H3 tail.
3. Our finding reveals a new epigenetic regulatory mechanism for Enterovirus 71 in virus-host interactions.     

Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen’s Encephalitis

Rasmussen’s encephalitis (RE) is a rare pediatric neurological disorder, and the exact etiology is not clear. Viral infection may be involved in the pathogenesis of RE, but conflicting results have reported. In this study, we evaluated the expression of both Epstein-Barr virus (EBV) and human herpes virus (HHV) 6 antigens in brain sections from 30 patients with RE and 16 control individuals by immunohistochemistry. In the RE group, EBV and HHV6 antigens were detected in 56.7% (17/30) and 50% (15/30) of individuals, respectively. In contrast, no detectable EBV and HHV6 antigen expression was found in brain tissues of the control group. The co-expression of EBV and HHV6 was detected in 20.0% (6/30) of individuals. In particular, a 4-year-old boy had a typical clinical course, including a medical history of viral encephalitis, intractable epilepsy, and hemispheric atrophy. The co-expression of EBV and HHV6 was detected in neurons and astrocytes in the brain tissue, accompanied by a high frequency of CD8⁺ T cells. Our results suggest that EBV and HHV6 infection and the activation of CD8⁺ T cells are involved in the pathogenesis of RE.     

Perinatal Vertical Transmission of Chikungunya Virus in Ruili,a Town on the Border between China and Myanmar

正Dear Editor,Chikungunya virus (CHIKV), an arbovirus in the family of Togaviridae, genus Alphavirus, is transmitted by the A.aegyptii or A. albopictus mosquito, and causes disease in humans characterized by fever, rash, and arthralgia (Silva and Dermody 2017; Suhrbier 2019). It was first reported in 1953 in Tanzania, and caused only a few outbreaks and sporadic cases in Africa and Asia in last century. However, in the epidemic in 2004, CHIKV acquired mutations that conferred enhanced transmission by the A. albopictus mosquito(Schuffenecker et al. 2006). Since then, it has successively caused outbreaks in Africa, the Indian Ocean, South East Asia, the South America, and Europe (Zeller et al. 2016).     

Development of a Novel Reverse Transcription Loop-Mediated Isothermal Amplification Method for Rapid Detection of SARS-CoV-2

In conclusion, the novel visual RT-LAMP assay is a simple, rapid, and sensitive approach for detection of SARS-CoV-2, and it is ready for application in primary care and community hospitals or health care centers, and even patients' own houses in response to the current SARS-CoV-2 epidemic because the assay does not require sophisticated equipment and skilled personnel. Furthermore, it is also ready to be used in fields for screening samples from wild animals and environments to facilitate the identification of potential intermediate hosts that mediate the cross-species transmission of SARS-CoV-2 from bats to humans.