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1.
我国新担子菌类补遗 总被引:1,自引:1,他引:0
在研究甘肃、四川、云南的担子菌类时发现如下4新种:云南地红菇(MacowanitesyunnanensisZang),属红菇科(Rusulaceae),地红菇属(MacowanitesKalchbr.)系我国新记录;松针锈耳(CrepidotuspinicolaZang)绣耳科(Crepidotaceae);蛇盖条孢牛肝菌(BoletelusserpentipileusZangetYuan),属松塔牛肝菌[疣孢牛肝菌科](Strobilomycotaceae);喜杉绒盖牛肝菌(XerocomuspiceicolaZangetYuan),属牛肝菌科(Boletaceae);长柄灰包(LycoperdonlongistipumZangetYuan),属灰包科(Lycoperdaceae)。 相似文献
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部分裸子植物叶片总蛋白分析 总被引:1,自引:0,他引:1
采用SDS- PAGE 技术, 分析了红豆杉科(Taxaceae) 植物南方红豆杉( Taxus chinensisvar- mairei (Lemee et Levl-) Cheng et L-K-Fu) 、穗花杉( Amentotaxus argotaenia (Hance) Pil ger) 、云南穗花杉( A- yunnanensis Li) 、白豆杉( Pseudotaxuschienii(Cheng) Cheng) 以及三尖杉科(Cephalotaxaceae) 、植物三尖杉( Cephalotaxus fortunei Hook-f-) 、粗榧( C-sinensis (Rehd-etWils-) Li) 、海南粗榧( C-hainanensis Li) 、篦子三尖杉( C-oliveri Mast-) 和罗汉松科(Podocarpaceae) 、植 物罗汉松 ( Podocarpus macrophyllus ( Thunb- ) D-Don) 、鸡毛 松( P-imbricatus Bl-) 、竹柏( P- nagi(Thunb-) Zoll) 、陆均松( Dacrydium pierrei Hickel) 共12 种植物的叶片蛋白, 在蛋白质水平上采用 相似文献
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从架棚(CeratostigmaminusStapfexPrain)的乙酸乙酯部分分离得到14个酚类化合物。经波谱技术,特别是2DNMR技术鉴定,其中化合物plumbocatechinsA(1)和B(2)为新化合物。其他12个化合物被分别鉴定为plumbolactoneA(3)、plumbabicacid(4)、isoshinanolone(5)、episoshinanolone(6)、Ntranscafeoyltyramine、Ntransferuloyltyramine、apocynin、vanilicacid、syringicacid、galocatechin、(+)catechin和1,2,6triOgaloylglucose。 相似文献
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云衫针层孔菌化学成分的研究 总被引:7,自引:1,他引:6
从云衫针层孔菌Phellinus yamanoi(Tamz.)shaw分离得到12个化合物,借助光谱分析鉴定为:8,11,13-abietadien-18-oic acid(1),1,2-benzenedi-carboxylic acidbis(2-ethyl-hexyl)ester(2),ergosterol peroxide(3),ergosta 7,22(E)-iden-3-ol(4),ergosta 7,22(Z)-dien-3-ol(5),octadecanoic acid-1,3-propanediyl ester(6),octadecanoic acid(7),8(19),14-labdadien-13-ol(8),ergosta-4,6,8(14),22-tetraen-3-one(9),化合 相似文献
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有机体之间化学相互作用的研究及其应用 总被引:3,自引:0,他引:3
有机体之间化学相互作用的研究及其应用宋启示(中国科学院昆明生态研究所,650223)ChemicalInteractionAmongOrganismsandTheirApplication¥SongQishi(KunmingInstituteofEcolo-gy,AcademiaSinica650223).ChineseJournalofEcology,1993,12(1):45-48。Thispaperreviewsthemostactiveresearchfieldsonchemicalinteractionamongorganisms:(1)allelopa-thyamongplants,whichiswidelyappliedinagricultureandhorticulture,(2)biochemicalinteractionbe-tweenplantsandinsects,(3)biochemicalinteractionamonginsectsand(4)biochemicalinteractionamongmammalsandbetweenmammalsandplants.Inaddit 相似文献
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本文报道了采自云南省地表枯枝落叶层的目 6新种,隶属6科6属,分别是褐带单烟Caeciliiusspadlcitaensis(单科Caeciliidae),褐痣塔 Tagalopsocus phaeostigmus(双科Amphipsocidae),双钩外 Ectopsocusbiunncialis(外科Ectopsocidae),中斑围 Peripsocusmedimacularis(围 科Peripsocidae),小头触 Psococerastiscapitulatis( 科Psocidae)及单钩苔鼠 Lichenomimahamata(鼠 科Myopsocidae)。模式标本保存于北京农业大学昆虫标本馆。文中量度单位为mm。 相似文献
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水稻内生联合固氮细菌的筛选,鉴定及其分布特性 总被引:14,自引:0,他引:14
利用乙炔还原法和固定15N2 活性测定法对分离自水稻( Oryza sativa L.)“越富”种子、根、茎和叶的内生细菌进行了筛选,获得29 株具有体外固氮能力的水稻内生联合固氮细菌。鉴定结果表明它们分属于根癌土壤杆菌( Agrobacterium tumefaciens (Smith et Townsend) Conn) ,放射土壤杆菌( A. radiobacter (Beijerinck et van Delden) Conn) ;阴沟肠杆菌( Enterobacter cloacae (Jordan) Hormaeche et Edwards) ,成团肠杆菌( E. agglomerans (Beijerinck) Ewing et Fife) ,坂崎肠杆菌( E. sakazakii Famer et al.) ;皮氏产碱菌( Alcaligenes piechaudii Kiredjian et al.) ,反硝化产碱菌( A. denitrificans (Leifson et Hugh) Ruger et Tan) ;类产碱假单胞菌( Pseudomonas pseudoalcaligenes Stanier) ,产碱假单胞菌( P. alcal 相似文献
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本文报道采用贵州省宽阔水自然保护区的9种虫草,它们是多壳虫草新咱(CordycepspolycarpicaLiang&Liusp.nov),鼠尾虫草新种(CordycepsmusicaudataLiangetLiusp.nov)针孢虫草(CordycepsacicularisRev.exBerk.)罗伯茨虫草(Cordycepsrobertsii(Hook),Gray)下垂虫草(Cordyceps 相似文献
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中国鳞虫兆属Tom ocerus四新种(弹尾目:鳞虫兆科) 总被引:9,自引:2,他引:7
本文记述了中国鳞虫兆属Tom ocerus4新种,即紫胸鳞虫兆Tom ocerus(Tom ocerina) pur-purithorus, sp. nov., (四川); 白鳞虫兆Tomocerus(Tom ocerina) calceus, sp. nov., (四川);巨鳞虫兆Tomocerus(s.str.)m aximus,sp.nov.(四川);小鳞虫兆Tom ocerus(s.str.)em eicus, sp. nov. (四川)。模式标本保存于绵阳经济技术高等专科学校农艺系昆虫标本室。1. 紫胸鳞虫兆Tom ocerus(Tomocerina) purpurithorus, 新种(图1)鉴别特征:本种与T.(Tom ocerina) m inutusTullberg 1876 非常相似,但其下列特征可与后者相区别:弹器齿节刺的刺式为5/7,1,弹器端节间齿数为5~7,爪内齿数为1,1,1,握弹器体上刚毛数为5支。正模:♀,四川峨眉山,19- IV- 1995,刘永琴;副模:4♀♀2♂♂,同正模。2. 白鳞虫兆Tom ocerus (Tom ocerina) calceus, 新种(图2)鉴别特征:本种与T.(Tomoceri 相似文献
10.
93年春,作者调查了北京植物园展览温室植物的害虫种类及危害状况。调查结果显示,该温室植物主要害虫为棉蚜(Aphisgosypi)、桃蚜(Myzuspersicae);柑桔红蜘蛛(Panonychuscitri);吹绵蚧(Iceryapurchasi);红蜡蚧(Ceroplastesrubens)、桑白蚧(Pseudaulacaspispentagona)等。文章最后就主要害虫蚜虫类、蚧虫类及白粉虱的防治作了论述 相似文献
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Profiles of SARS-CoV-2 RNA and Antibodies in Inpatients with COVID-19 not Related with Clinical Manifestation: A Single Centre Study 下载免费PDF全文
Zhao Li Gao Ruqin Lu Roujian Wang Huijuan Deng Yao Niu Peihua Jiang Fachun Huang Baoying Liang Jiwei Jia Jing Zhang Feng Wang Wenling Wu Guizhen Tan Wenjie 《中国病毒学》2021,36(5):1088-1092
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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
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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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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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