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本文报道了中国白粉菌科Erysiphaceae的四个新记录种和变种,即:ErysiphecatalpaeSimon.,E.thesiJunel,E.ulmariaeDesm.和MicrosphaeradiffusaCooke&Peckvar.thermopsidis(Jacz.)T.Z.Liucomb.nov.。最后的变种同时是新组合。 相似文献
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我国齿裂菌属的4个分类单元,其中包括2个新种:生于青冈」Cyclobalanopsisglauca(Thunb.)Oerst.「上的青冈齿裂菌(Coccomyces cyclobalanopsis Y.R.Lin&Z.Z..Li sp.nov.)和生于香叶树(Lindera communis Hemsl.)上的福建齿裂菌(C.fujianensis Y.R.Lin&C.T..Xiang sp.no 相似文献
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A.Y.Rosman,R.E.Tulos,T.E.O’Del&R.G.Thorn:ProtocolsforanaltaxabiodiversityinventoryoffungiinaCostaRicanconservationarea(Parkw... 相似文献
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在安徽省黄山杜鹃〗Rhododendron maculiferum Franch.ssp.anhweiense (Wils.)Chamb.〖上发现盘菌纲一新属--新齿裂菌属(NHeococcomycesY.R.Lin,C.T.Xiang&Z.Z.Li).对该属及其模式种--杜鹃新齿裂菌(N.rhododendri Y.R.Lin,C.T.Xiang&Z.Z.Li)进行了描述和讨论。主模式标本存放在 相似文献
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5种尾孢菌和2种假尾孢菌,其中有3个新种:杜若尾孢Cercospora polliae-japonicaeY.L.Guo&Y.Jiang,sp.nov.,日本锦带花尾孢C.weigelae-japonicaeY.L.Guo&Y.Jiang,sp.nov.和旋覆花假尾孢Pseudocercospora inulaeY.L.Guo&Y.Jiang,sp.nov.,1个新组合:紫菀假尾孢Pseudoce 相似文献
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本文记述了剪管蓟马属Psalidothrips中国的6种,其中有中国新记录1种:爪哇剪管藓马:P.amensPriesner和1新种:车八岭剪管藓马P.chebalingicussp.nov。模式标本存 南农业大学昆虫标本室。 相似文献
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华南地区羽枝藓属(平藓科)和凋叶藓属(薄齿藓科)植物研究 总被引:1,自引:0,他引:1
张力 《热带亚热带植物学报》1994,2(3):22-27
本文研究了华南地区羽枝藓属(Pinnatella)和凋叶藓属(Caduciella)植物.简要讨论了羽枝藓属和凋叶藓属的系统位置.确认华南地区产羽枝藓属4种,即爪哇羽枝藓(P.anbigua)、纤细羽枝藓(P.anacamptolepis)、嵌边羽枝藓(P.intralimbata)和东亚羽枝藓(P.makinoi),凋叶藓2种,即广东凋叶藓(C.guangdongensis)和凋叶藓(C.mariei).其中爪哇羽枝藓为广东、贵州、海南岛之新记录,纤细羽枝藓为中国大陆(广东、广西)和海南岛之新记录,东亚羽枝藓为福建、广西和海南岛之新记录,广东调叶藓为海南岛之新记录,暂将P.alopecurioides处理为存疑种。本文还包括分种检索表、各种的简要识别特征、产地及生境资料. 相似文献
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Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis
It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis. 相似文献
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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 相似文献
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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. 相似文献
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RICHARD E. NORRIS 《Botanical journal of the Linnean Society. Linnean Society of London》1991,106(1):1-40
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera. 相似文献
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JOAN VALUÈS MONTSERRAT TORRELL NÚRIA GARCIA JACAS 《Botanical journal of the Linnean Society. Linnean Society of London》2001,137(4):399-407
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted. 相似文献