Distribution of mRNA that codes for 5-hydroxytryptamine receptor subtypes in the gastrointestinal tract of dairy cows     

Meylan M  Georgieva TM  Reist M  Blum JW  Martig J  Georgiev IP  Steiner A 《American journal of veterinary research》2004,65(8):1151-1158

  相似文献   

Histological Changes of the Feline Cervix, Endometrium and Placenta after Mid-gestational Termination of Pregnancy with Aglepristone     

P Georgiev  A Wehrend  G Penchev  A Vodenicharov  J Kauffold  R Leiser 《Reproduction in domestic animals》2008,43(4):409-414

This study was conducted to investigate endometrial and placental structural changes that occurred in response to mid‐gestational termination of pregnancy in queens using aglepristone, a progesterone receptor antagonist. Thirteen European Shorthair pregnant queens were either treated with aglepristone (10 mg/kg body weight; subcutaneously) twice on days 25 and 26 after first mating (am; group I; n = 9), or remained untreated and served as control (group II; n = 4). Queens of group I were ovariohysterectomized between days 30 and 41 am, either at the onset (n = 3) or during (n = 1) abortion and 12 h (n = 1), 24 h (n = 3) or 10 days after abortion (n = 1). Queens of group II were ovariohysterectomized on day 30 am. Tissue was collected from the cervix, and the interplacental zone as well as the paraplacenta/placental girdle of the uterus, subjected to standard histological procedures and evaluated using light microscopy. During abortion, gaps appeared within the paraplacenta and the placental girdle which were filled with blood, leading to an embryo‐maternal disconnection. Blood was also observed within the uterine lumen as well as the interstitial mucosal stroma of the cervix and the placental girdle zone and probably originated from damaged venules, whilst arterioles remained intact. As the interval between abortion and surgery increased, the interstitial and luminal haemorrhages became less pronounced and completely disappeared except interstitial remnants 10 days after abortion. The endometrial regeneration was not fully completed on day 10 after abortion and a few cystically dilated glands were evident. In conclusion, abortion of queens through aglepristone given during mid‐gestation is assumed to be the result of damage of uterine venules. This leads to an interstitial haemorrhages and bleeding into the uterine lumen, subsequently resulting in utero‐placental detachment.  相似文献   

Increasing Number of Drip Irrigation Lines for Water Conservation during Strawberry Establishment     

Oleg Daugovish  Ben Faber  Michael Cahn  Surendra Dara 《International Journal of Fruit Science》2016,16(4):108-117

ABSTRACT

Strawberry transplants in California are planted through narrow holes in raised beds covered with polyethylene mulch. They are irrigated with overhead sprinklers for the first five weeks to leach salts and maintain plant turgidity; most of this sprinkler-applied water runs off the plastic without reaching the plants. At three coastal locations, we compared grower controlled drip irrigation with doubled number of tapes to sprinkler irrigation immediately after planting. Root zone EC and moisture levels were similar in both irrigation systems. Depending on the location, water use was reduced 24 to 78% in drip-only plots compared to sprinkler and runoff was nearly eliminated. Plants in drip-only plots were similar in size and root biomass to those established with sprinkler irrigation. Early yields were similar in the two irrigation systems. Thus, use of the increased number of drip tapes conserves water during strawberry establishment without negative effects on plant performance.  相似文献   

Identification of genes involved in the formation of soluble dietary fiber in winter rye grain and their expression in cultivars with different viscosities of wholemeal water extract     

Liudmila V.Kozlova  Alsu R.Nazipova  Oleg V.Gorshkov  Liliya F.Gilmullina  Olga V.Sautkina  Natalia V.Petrova  Oksana I.Trofimova  Sergey N.Ponomarev  Mira L Ponomareva  Tatyana A.Gorshkova 《作物学报(英文版)》2022,(2):532-549

  相似文献   

Utilization of diflubenzuron to controlgelechia senticetella (Stgr.) (Lepidoptera: Geiechiidae), a dangerous pest ofjuniperus excelsa M. B. (Cupressaceae) in Bulgaria     

G. Georgiev  G. Tsankov  P. Mirchev 《Journal of pest science》2000,73(4):107-109

In 1992, experiments were carried out in Bulgaria to controlGelechia senticetella (Stgr.) (Lepidoptera: Geiechiidae), a mining pest on the needles and young shoots ofJuniperus excelsa M. B. by commercial products Dimilin ODC-45 and Dimilin WP-25 based on the insect growth regulator diflubenzuron. Two Ultra Low Volume (ULV) treatments were performed - on March 12^th and April 16^th, during the emerging of the pest larvae out of the infested shoots. Dimilin ODC-45 was applied in a dose of 60-120 ml/ha (27-54 g a.i./ha), dissolved in 5l of diesel oil, and Dimilin WP-25 - in a dose of 200 g/ha (50 g a.i./ha) dissolved in 5l of water. The effect of Dimilin ODC-45 was very high - 92.5-97.6 %. The effect of Dimilin WP-25 was unsatisfactory - 63.4-70.0 %, which was most probably due to the fact that the oil emulsions adhere to the treated plants better than the water solutions, thus ensuring a longer period of action.  相似文献   

A pericyte origin of spinal cord scar tissue     

Göritz C  Dias DO  Tomilin N  Barbacid M  Shupliakov O  Frisén J 《Science (New York, N.Y.)》2011,333(6039):238-242

There is limited regeneration of lost tissue after central nervous system injury, and the lesion is sealed with a scar. The role of the scar, which often is referred to as the glial scar because of its abundance of astrocytes, is complex and has been discussed for more than a century. Here we show that a specific pericyte subtype gives rise to scar-forming stromal cells, which outnumber astrocytes, in the injured spinal cord. Blocking the generation of progeny by this pericyte subtype results in failure to seal the injured tissue. The formation of connective tissue is common to many injuries and pathologies, and here we demonstrate a cellular origin of fibrosis.  相似文献   

Changes in Water Status,Membrane Stability and Antioxidant Capacity of Wheat Seedlings Carrying Different Rht‐B1 Dwarfing Alleles under Drought Stress     

K. Kocheva  V. Nenova  T. Karceva  P. Petrov  G. I. Georgiev  A. Börner  S. Landjeva 《Journal of Agronomy and Crop Science》2014,200(2):83-91

Water deficiency is a major constraint to wheat productivity in drought prone regions. The wheat DELLA‐encoding height‐reducing genes (Rht) are associated with significant increase in grain yield. However, the knowledge of their benefit in dry environments is insufficient. The objective of the study was to examine the effect of induced drought on leaf water content, level of oxidative stress, cell membrane stability, accumulation of osmoprotectants and activity of some antioxidant enzymes in wheat near‐isogenic lines carrying the alleles Rht‐B1b (semidwarfing) and Rht‐B1c (dwarfing) in comparison with the tall control Rht‐B1a. Six‐day‐long water deprivation was imposed at seedling stage. Plants carrying Rht‐B1c and, to a lesser extent, those carrying Rht‐B1b performed better under stress compared with Rht‐B1a in terms of more sustained membrane integrity, enhanced osmoregulation and better antioxidant defence. These differential responses could reflect pleiotropic effects of the Rht‐B1 gene associated with the accumulation of the mutant gene product, that is, altered DELLA proteins, or might be related to allelic variations at neighbouring loci carrying candidate genes for proteins with a major role in plant water regulations and stress adaptation. These findings might be of importance to breeders when introducing Rht‐B1 alleles into wheat cultivars designed to be grown in drought liable regions.  相似文献   

Usefulness of a rapid immuno-migration test for the detection of canine monocytic ehrlichiosis in Africa     

Bernard Davoust  Daniel Parzy  Jean-Paul Demoncheaux  Raphaël Tine  Mamadou Diarra  Jean-Lou Marié  Oleg Mediannikov 《Comparative immunology, microbiology and infectious diseases》2014

A rapid immuno-migration test for the serological detection of canine monocytic ehrlichiosis, Witness^® Ehrlichia (WE) (Zoetis, France), was evaluated in 528 serum samples from dogs living in endemic areas of West and East Africa: Senegal (N = 208), Ivory Coast (N = 7), Sudan (N = 27), and Djibouti (N = 286). Of these dogs, 200 were French military working dogs (MWD) temporarily residing in Africa. The WE test results were compared with those obtained by indirect immunofluorescence (IFA). The sensitivity of WE was 97% [94.2, 98.7] with a specificity of 100% [98.6, 100]. In MWD, the seroprevalence (IFA) was 7%; in native dogs, it reached 77.1%. This significant difference can be explained by prophylactic measures from which MWD benefit. The WE test represents a simple, fast and reliable test for the detection of anti-Ehrlichia canis antibodies. Its implementation for the diagnosis of clinical cases has been validated in the field, and its use allows easy detection of asymptomatic dogs that may be carriers of E. canis.  相似文献   

New data on three molecular markers from different cellular genomes in Mediterranean accessions reveal new insights into phylogeography of <Emphasis Type="Italic">Pisum sativum</Emphasis> L. subsp. <Emphasis Type="Italic">elatius</Emphasis> (Bieb.) Schmalh.     

Oleg E. Kosterin  Olga O. Zaytseva  Vera S. Bogdanova  Michael J. Ambrose 《Genetic Resources and Crop Evolution》2010,57(5):733-739

Twelve accessions classified as Pisum sativum subsp. elatius, mostly from West and Central Mediterranean, were analysed for three markers from different cellular genomes: rbcL (plastid genome), coxI (mitochondrial genome) and SCA (nuclear genome). Based on geographical distribution of their allele combinations analysed in this and the earlier study, we suggest a putative history of wild representatives of P. sativum. The ancestor of this species belonged to lineage A (coxI+, rbcL+, SCA ^f ); it appeared in East Mediterranean, then spread westward most probably during one of the Pleistocene coolings when the sea was smaller, so that representatives of lineage A remained in the Eastern Mediterranean and on the islands of Sicily and Menorca. Mutation leading to the loss of the restriction site for PsiI in coxI−, gave rise to lineage C (coxI−, rbcL+, SCA ^f ) which spread widely in the Mediterranean and is now found in France, Greece and Ethiopia. Mutation leading to rbcL− gave rise to lineage D (coxI−, rbcL−, SCA ^f ), now found in Egypt (P. sativum subsp. jomardii) and Spain. Mutational transition of SCA ^f to SCA ^s most probably took place in North-Eastern Mediterranean since the resulting lineage B (coxI−, rbcL−, SCA ^s ) now occupies the Tauro-Caucasian area. In Asia Minor and North Israel, line B met the ancestral line A so that both lines coexist there presently. The lineage B gave rise to the cultivated P. sativum subsp. sativum.  相似文献   

Composition,quality control,and antimicrobial activity of the essential oil of long-time stored dill (Anethum graveolens L.) seeds from Bulgaria     

Jirovetz L  Buchbauer G  Stoyanova AS  Georgiev EV  Damianova ST 《Journal of agricultural and food chemistry》2003,51(13):3854-3857

The essential oil of long-time stored seeds of dill (Anethum graveolens L.) from Bulgaria was analyzed by physicochemical methods, gas chromatography (GC), GC-mass spectrometry (MS) (achiral and chiral phases), and olfactometry, and its antimicrobial activity was tested by using different strains of microorganisms. More than 40 constituents of the essential dill oil, obtained from seeds stored for more than 35 years, could be identified as essential volatiles, responsible for the pleasant fresh (D-limonene) and spicy (D-carvone) odor of a high quality. As aroma impact compounds, D-carvone (50.1%) and D-limonene (44.1%) were found. Antimicrobial testings showed high activity of the essential A. graveolens oil against the mold Aspergillus niger and the yeasts Saccharomyces cerevisiae and Candida albicans.  相似文献