3,4-二氯异噻唑-5-甲酰胺衍生物的合成及生物活性     

陈晓燕  戴良英  李岳东  毛武涛  房震  李娟娟  王盾  Tatiana KALININA  范志金 《农药学学报》2013,15(2):140-144

异噻唑类杂环化合物具有广泛的生物活性。为了扩大先导结构的发现范围,以3,4-二氯异噻唑-5-甲酸为原料合成了10个未见文献报道的3,4-二氯异噻唑-5-甲酰胺衍生物;其结构经核磁共振氢谱、红外光谱和元素分析确证。初步生物测试结果表明,化合物Ⅲe对9种病原真菌表现出了广谱的抑菌活性,在50 μg/mL下其抑制率均超过50%;在100 μg/mL下,大部分化合物展现了较好的抗烟草花叶病毒(tobacco mosaic virus,TMV)或诱导烟草抗TMV活性,其中化合物Ⅲa和Ⅲi的诱导活性分别为41.88%和42.92%。  相似文献   

The influence of the herbicide 2-methyl-4-chlorophenoxyacetic acid (MCPA) on the mineralization of litter-derived alkanes and the abundance of the alkane monooxygenase gene (alkB) in the detritusphere of Pisum sativum (L.)     

Stephan Schulz  Tatiana Yuyunkina  Holger Pagel  Lukas Y. Wick  Christian Poll  Thilo Streck  Ellen Kandeler  Michael Schloter 《Biology and Fertility of Soils》2012,48(8):933-940

In the present study, the temporal and spatial variation of the abundance of the alkane monooxygenase gene alkB and 16S rRNA genes in different soil compartments was analysed in the presence or absence of 2-methyl-4-chlorophenoxyacetic acid (MCPA) after the addition of pea litter to soil in a microcosm study. Samples were analysed shortly after litter addition (T0) and 1?week (T1), 3?weeks (T3) and 6?weeks (T6) after the addition of litter. In addition also, the quantity and quality of litter-derived alkanes was analysed and measured. The results revealed a fast and complete degradation of MCPA in all compartments throughout the experiment. Nevertheless, significant changes in the distribution patterns of short- and middle-chained alkanes suggest an interaction of MCPA and alkane degradation. alkB gene copy numbers were highly influenced by the time point of analysis and by the investigated soil compartment. Overall, an increase in alkB gene copy numbers from T0 to T3 was visible in the upper soil compartments whereas a decrease compared to T0 was measured in the deeper soil compartments. MCPA addition resulted in an increase of alkB abundance at T6. Gene copy numbers of 16S rRNA were not influenced by sampling time and soil compartment. In contrast to the control treatments, a slight increase in 16S rRNA gene copy numbers was visible at T1 and T3 compared to T0 in all soil compartments.  相似文献   

Canopy Uptake of 15NH3 by Four Temperate Tree Species and the Interaction with Leaf Properties     

Sandy Adriaenssens  Jeroen Staelens  Karen Wuyts  Shari Van Wittenberghe  Tatiana Wuytack  Kris Verheyen  Pascal Boeckx  Roeland Samson 《Water, air, and soil pollution》2012,223(9):5643-5657

Tree canopies are believed to act as a sink of atmospheric ammonia (NH₃). However, few studies have compared the uptake efficiency of different tree species. This study assessed the uptake of ¹⁵N-labelled NH₃ at 5, 20, 50 and 100?ppb_v by leaves and twigs of potted silver birch, European beech, pedunculate oak and Scots pine saplings in June, August and September 2008. Additionally, foliar uptake of ¹³C-labelled carbon dioxide (¹³CO₂) and leaf stomatal characteristics were determined per species and treatment date and the relation with ¹⁵NH₃ uptake and estimated stomatal ¹⁵NH₃ uptake were assessed. Both ¹⁵NH₃ and ¹³CO₂ uptake were affected by tree species and treatment date, but only ¹⁵NH₃ uptake was influenced by the applied NH₃ concentration. Depending on the treatment date, ¹⁵NH₃ uptake by leaves and twigs was highest at 5 (September), 20 (June) or 50 (August) ppb_v. Birch, beech and oak leaves showed the highest uptake in August, while for pine needles this was in June and, except at 5?ppb_v in June, the ¹⁵NH₃ uptake was always higher for the deciduous species than for pine. For all species except beech ¹³CO₂ uptake was highest in August and on every treatment date the ¹³CO₂ uptake by leaves of deciduous species was significantly higher than by pine needles. Leaf characteristics and ¹³CO₂ uptake did not provide a strong explanation for the observed differences in ¹⁵NH₃ uptake. This study shows that on the short-term a high interspecific variability exists in NH₃ uptake, which depends on the time in the growing season.  相似文献   

Susceptibility of the pistachio processionary mothThaumetopoea solitaria to threeBacillus thuringiensis products     

Galina Gindin  Tatiana Kuznetsova  A. Protasov  Nitza Saphir  Z. Madar  Z. Mendel 《Phytoparasitica》2008,36(5):472-482

The susceptibility of larvae ofThaumetopoea solitaria Freyer (Lepidoptera; Notodontidae, Thaumetopoeinae), fed on treated pistachio foliage, to three commercial control products derived fromBacillus thuringiensis (Bt), was evaluated in the laboratory. Both Dipel DF and Delfin WG were highly effective against 1 ^st and 2 ^nd instar larvae at relatively low concentrations (LC₅₀: 0.01–0.04%), whereas mortality of the 3 ^rd instar larvae reached 50% only at a Dipel DF concentration of 0.2%. The third formulation, Foray 48B, was significantly less toxic toward all tested larval instars. The susceptibility ofT. solitaria toBr decreased progressively between molts, and then increased steeply during the first days following each molt. Use of the film-forming polymer Nu-Film as a wetting agent and spreader-sticker for the commercial formulation of Dipel DF improvedBt adhesion to extremely hydrophobic youngPistacia foliage, and significantly increasedBt persistence under ambient conditions. Addition of Nu-Film improved the leaf surface coverage and extended the duration of rainproofing.  相似文献   

The basis for rootstock resilient to Capnodis species: screening for genes encoding δ‐endotoxins from Bacillus thuringiensis     

Galina Gindin  Zvi Mendel  Bella Levitin  Pradeep Kumar  Tal Levi  Preeti Shahi  Vadim Khasdan  Dan Weinthal  Tatiana Kuznetsova  Monica Einav  Ariel Kushmaro  Alex Protasov  Arieh Zaritsky  Eitan Ben‐Dov 《Pest management science》2014,70(8):1283-1290

  相似文献   

Molecular cytogenetic characterization,leaf anatomy and ultrastructure of the medicinal plant <Emphasis Type="Italic">Potentilla alba</Emphasis> L.     

Tatiana E. Samatadze  Svyatoslav A. Zoshchuk  Anna S. Khomik  Alexandra V. Amosova  Natalya Yu. Svistunova  Svetlana N. Suslina  Firdaus M. Hazieva  Olga Yu. Yurkevich  Olga V. Muravenko 《Genetic Resources and Crop Evolution》2018,65(6):1637-1647

Potentilla alba L. is a valuable medicinal plant widely used in folk and traditional medicine and particularly promising in complex treatment of thyroid pathology. Natural resources of this species are insufficient due to ever-growing use in contemporary medicine. Comprehensive investigations of different P. alba populations are essential for the successful extension of P. alba plantings. Aiming for a better understanding of karyotype structure, chromosome behaviour in meiosis and developing new diagnostic characters, we performed molecular cytogenetic characterization and leaf structure and ultrastructure analyses of two introduced P. alba samples originating from different habitats. Based on chromosome morphology, distribution of 45S/5S rDNA and DAPI-banding patterns, all chromosomes in the karyotypes were identified and the P. alba chromosomal idiogram was constructed. Our findings confirmed P. alba karyotype stability and also revealed several diagnostic characters of this species: the features of cells of upper and lower leaf epidermis, the presence of calcium oxalate druses and three types of leaf indumentum, essential for evaluation of genetic diversity in different populations, validation of raw materials and further selection progress. The meiotic abnormalities were detected probably related to low pollen activity and indicated the advantages of vegetative propagation in the development of a P. alba plantation system.  相似文献   

Erratum to: Forms of Cu (II), Zn (II), and Pb (II) compounds in technogenically transformed soils adjacent to the Karabashmed copper smelter     

Tatiana M. Minkina  Vitaly G. Linnik  Dina G. Nevidomskaya  Tatiana V. Bauer  Saglara S. Mandzhieva  Vitaliy Y. Khoroshavin 《Journal of Soils and Sediments》2018,18(6):2229-2230

  相似文献   

Erratum to: Chemical contamination in upper horizon of Haplic Chernozem as a transformation factor of its physicochemical properties     

Minkina  Tatiana M.  Pinskii  David L.  Zamulina  Inna V.  Nevidomskaya  Dina G.  Gülser  Coşkun  Mandzhieva  Saglara S.  Bauer  Tatiana V.  Morozov  Igor V.  Sushkova  Svetlana N.  Kizilkaya  Ridvan 《Journal of Soils and Sediments》2018,18(6):2431-2431

Journal of Soils and Sediments -  相似文献   

Effects of dietary microencapsulated <Emphasis Type="Italic">Cymbopogon flexuosus</Emphasis> essential oil on reproductive-related parameters in male <Emphasis Type="Italic">Rhamdia quelen</Emphasis>     

Carine de Freitas Souza  Cristine Rampelotto  Bruno Bianchi Loureiro  Fernanda Alves Pereira  Adriane Erbice Bianchini  Carine Dahl Corcini  Antonio Sergio Varela Junior  Tatiana Emanuelli  Leila Picolli da Silva  Sílvio Teixeira da Costa  Kalyne Bertolin  Monique Tomazele Rovani  Paulo Bayard Dias Gonçalves  Berta Maria Heinzmann  Bernardo Baldisserotto 《Fish physiology and biochemistry》2018,44(4):1253-1264

In aquaculture, nutrition and supplemented diets have been shown to affect broodstock reproductive performance. In this study, we investigated the effects of dietary supplementation with Cymbopogon flexuosus essential oil (CFEO) microcapsules on reproductive-related parameters in silver catfish (Rhamdia quelen) male broodfish. Adult male broodstocks were separated into three groups according to the concentrations of supplemented CFEO (0.0?=?control; 1.0 or 3.0 mL per kg of diet). After 20 days under experimental conditions, the animals were euthanized and the gonads were harvested for gonadosomatic index, sperm analysis, oxidative stress, and histopathology; testosterone levels were measured in the plasma; gene expression of prl, smtl, pomca, and pomcb was assessed in the pituitary gland by real-time PCR. The results showed no alterations on reproductive parameters in R. quelen males treated with Cymbopogon flexuosus essential oil compared to the control-diet animals. In conclusion, CFEO microcapsules supplied for 20 days in the concentrations of 1.00 or 3.00 mL per kilogram of diet did not affect the reproduction criteria evaluated in this study in male silver catfish.  相似文献   

Effects of Long-Term Feed Deprivation on the Development of Rigor Mortis and Aspects of Muscle Quality in Live-Stored Mature Atlantic Cod (Gadus Morhua L.)     

Tatiana N. Ageeva  Ragnar L. Olsen  Sjurdur Joensen  Margrethe Esaiassen 《Journal Of Aquatic Food Product Technology》2018,27(4):477-485

Fresh Atlantic cod is available in large amounts in Norway during the first 5 months of the year. Live-storage of cod may extend the marketing period of fresh cod products throughout the year. In addition, this concept makes pre-rigor processing possible. The main problem of keeping wild cod in captivity is that it does not easily accept formulated dry feed. The purpose of this study was, therefore, to investigate how long-term live-storage of mature Atlantic cod in the absence of feed (79 days) affects the onset and development of rigor mortis, as well as fillet quality by assessing hardness and water-holding capacity of the muscle, pH, protein, and water content. The results showed that starvation of Atlantic cod for 23 days reduces the pre-rigor time from 29 to 17 h. Further starvation did not decrease this period significantly, suggesting that live-stored cod deprived of feed for 79 days may still be industrially processed before the onset of rigor mortis. More than 51 days of starvation reduced protein concentration and increased water content of the muscle. After 51 days, the muscle texture was softer than in fish starved for a shorter period.  相似文献