Effects of different freezing methods on estimates of soil microbial biomass N by fumigation‐extraction     

Jürgen K. Friedel  Corinne Kobel  Michael Pfeffer  Walter J. Fitz  Walter W. Wenzel 《植物养料与土壤学杂志》2003,166(3):326-327

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EVALUATION OF ORAL IRON GALACTAN AS A METHOD OF IRON SUPPLEMENTATION FOR INTENSIVELY HOUSED SUCKING PIGLETS     

W. R. Webster  Corinne K.  Dimmock†  P. K. O'Rourke  † P. J. Lynch  § 《Australian veterinary journal》1978,54(7):345-348

SUMMARY Iron supplementation of piglets with oral galactan given as a single dose within 24 hours of birth was evaluated in a series of on farm trials. The growth rate of piglets receiving this treatment was faster than that of piglets receiving single injections of iron dextran or iron galactan at 3 days of age, or ferrous sulphate crystals orally at weekly intervals. Mean values for red cell parameters of oral iron galactan supplemented piglets at 2 to 4 weeks of age were lower than those of injected piglets but there was no clinical evidence of anaemia in any of the piglets.  相似文献   

Temperature-Dependence of Lipid A Acyl Structure in Psychrobacter cryohalolentis and Arctic Isolates of Colwellia hornerae and Colwellia piezophila     

Charles R. Sweet  Rebecca E. Watson  Corinne A. Landis  Joseph P. Smith 《Marine drugs》2015,13(8):4701-4720

Lipid A is a fundamental Gram-negative outer membrane component and the essential element of lipopolysaccharide (endotoxin), a potent immunostimulatory molecule. This work describes the metabolic adaptation of the lipid A acyl structure by Psychrobacter cryohalolentis at various temperatures in its facultative psychrophilic growth range, as characterized by MALDI-TOF MS and FAME GC-MS. It also presents the first elucidation of lipid A structure from the Colwellia genus, describing lipid A from strains of Colwellia hornerae and Colwellia piezophila, which were isolated as primary cultures from Arctic fast sea ice and identified by 16S rDNA sequencing. The Colwellia strains are obligate psychrophiles, with a growth range restricted to 15 °C or less. As such, these organisms have less need for fluidity adaptation in the acyl moiety of the outer membrane, and they do not display alterations in lipid A based on growth temperature. Both Psychrobacter and Colwellia make use of extensive single-methylene variation in the size of their lipid A molecules. Such single-carbon variations in acyl size were thought to be restricted to psychrotolerant (facultative) species, but its presence in these Colwellia species shows that odd-chain acyl units and a single-carbon variation in lipid A structure are present in obligate psychrophiles, as well.  相似文献   

Colostral antibody induced interference of inactivated bluetongue serotype-8 vaccines in calves     

Vitour D  Guillotin J  Sailleau C  Viarouge C  Desprat A  Wolff F  Belbis G  Durand B  Bakkali-Kassimi L  Breard E  Zientara S  Zanella G 《Veterinary research》2011,42(1):18

Since its introduction into northern Europe in 2006, bluetongue has become a major threat to animal health. While the efficacy of commercial vaccines has been clearly demonstrated in livestock, little is known regarding the effect of maternal immunity on vaccinal efficacy. Here, we have investigated the duration and amplitude of colostral antibody-induced immunity in calves born to dams vaccinated against bluetongue virus serotype 8 (BTV-8) and the extent of colostral antibody-induced interference of vaccination in these calves. Twenty-two calf-cow pairs were included in this survey. The median age at which calves became seronegative for BTV was 84 and 112 days as assayed by seroneutralisation test (SNT) and VP7 BTV competitive ELISA (cELISA), respectively. At the mean age of 118 days, 13/22 calves were immunized with inactivated BTV-8 vaccine. In most calves vaccination elicited a weak immune response, with seroconversion in only 3/13 calves. The amplitude of the humoral response to vaccination was inversely proportional to the maternal antibody level prior to vaccination. Thus, the lack of response was attributed to the persistence of virus-specific colostral antibodies that interfered with the induction of the immune response. These data suggest that the recommended age for vaccination of calves born to vaccinated dams needs to be adjusted in order to optimize vaccinal efficacy.  相似文献   

Forest tree genomics: 10 achievements from the past 10 years and future prospects     

Christophe Plomion  Catherine Bastien  Marie-Béatrice Bogeat-Triboulot  Laurent Bouffier  Annabelle Déjardin  Sébastien Duplessis  Bruno Fady  Myriam Heuertz  Anne-Laure Le Gac  Grégoire Le Provost  Valérie Legué  Marie-Anne Lelu-Walter  Jean-Charles Leplé  Stéphane Maury  Alexandre Morel  Sylvie Oddou-Muratorio  Gilles Pilate  Léopoldo Sanchez  Ivan Scotti  Caroline Scotti-Saintagne  Vincent Segura  Jean-François Trontin  Corinne Vacher 《Annals of Forest Science》2016,73(1):77-103

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Effect of catalytic conditions on the synthesis of new aconitate esters   总被引：1，自引：0，他引：1  

William Piang-Siong  Pascale de Caro  Corinne Lacaze-DufaureAlain Shum Cheong Sing  William Hoareau 《Industrial Crops and Products》2012,35(1):203-210

Sugar cane is a crop which generates large amounts of biomass and a juice rich in high-value natural molecules. After extracting sugar from the juice, the recovering of various compounds such as organic acids contained in molasses could contribute to increase the competivity of the sugar industry. Therefore, according to the biorefinery approach, we propose to study the chemical conversion of one of these acids, the aconitic acid, by esterification reactions. A new series of aconitate esters have been synthesized by combining aconitic acid and alcohols from natural origin. The effects of experimental conditions have been investigated and have shown that the type of catalysis has a significant effect on the selectivity. Kinectics have thus been performed to determine the best conditions to synthetize enriched compositions in esters. Homogeneous catalysis generates the highest yield in triester. Heterogeneous catalysis (macroporous resins) is prefered for the production of monoesters while catalysis assisted by ionic liquid is adapted to prepare mainly diesters. Green indicators have been discussed according to the calculations performed. The resulting polyfunctional esters are totally biosourced molecules and have a great potential as bioproducts for different applications.  相似文献   

Non-operator landowner interest in agroforestry practices in two Missouri watersheds     

J. Gordon ArbuckleJr.  Corinne Valdivia  Andrew Raedeke  John Green  J. Sanford Rikoon 《Agroforestry Systems》2009,75(1):73-82

Land tenure has long been considered a critical factor in determining the adoption and long-term maintenance of agroforestry practices. Empirical evidence from non-US settings has consistently shown that secure land tenure is positively associated with agroforestry adoption. In the US, over 40% of private agricultural land is farmed by someone other than the owner. Given the importance of land tenure in agroforestry decisions in other countries and the magnitude of non-operator landownership in the US, there has been surprisingly little focus on land tenure in the temperate agroforestry literature. Using data from a 1999 survey in Missouri, this study explores factors associated with non-operator landowner interest in agroforestry. Results suggest that differences in farming orientation are linked to interest in agroforestry. Closer ties to farming, stronger financial motivations for landownership, and higher proportion of land planted to row crops were negatively related to interest in agroforestry among non-operator landowners. Environmental or recreational motivations for landownership and contacts with natural resource professionals were positively associated with interest in agroforestry. These results, consistent with earlier qualitative research suggesting that farm operators who have a strong “conventional farming identity” were less interested in agroforestry, point to a divide between landowners for whom environmental and recreational values play an important role in ownership motivation and those for whom financial considerations take precedence. The findings imply that agroforestry development programs in the US should take non-operator landowners and their farming and ownership orientations into account when designing research and outreach efforts.

J. Gordon Arbuckle Jr.Email:

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Rapid beetle community convergence following experimental habitat restoration in a mined peat bog     

Corinne H. Watts  Beverley R. Clarkson 《Biological conservation》2008,141(2):568-579

The rate of recovery of invertebrate communities following habitat restoration has received little attention, despite the importance of invertebrates in ecosystem dynamics. In experimental trials in a mined peat bog in New Zealand, we compared the short-term rate of beetle community re-assembly at sites restored using management techniques varying in cost and effort to implement, and subsequently examined the long-term rate of beetle community convergence towards the ‘target’ community structure of an undisturbed peat bog. There was a direct relationship between the rate of beetle community re-assembly and the cost and effort applied to plant community restoration treatments (processed peat with no seed, processed peat with seed, and direct habitat translocation). To test the longer term rate of beetle community convergence following habitat restoration, we monitored beetle assemblages on a chronosequence of experimental habitat islands in which restoration was initiated 1, 13, 24, 25, 42 and 72 months previously. With increasing age, the plant community became more diverse and structurally complex, and beetle community composition converged rapidly on the target community structure of an undisturbed peat bog. Using a simple linear regression analysis on ordination axis scores, we obtained the quantitative prediction that the beetle community on restored islands would converge on the average community composition of an undisturbed peat bog within just 7-8.5 years. Our results clearly show that rapid invertebrate community re-assembly can occur in direct response to management techniques focused on establishing vegetation structure. Even the use of a low-cost restoration technique (processed peat with seed added) was effective in initiating remarkably rapid invertebrate community re-assembly in cutover peat bogs within 10 years.  相似文献   

Evaluation of assays for quantification of DNA in canine plasma as an indirect marker of NETosis          下载免费PDF全文

Stephanie A. Smith  Corinne M. Lawson  Maureen A. McMichael  Katrina Jung  Mauria O'Brien  Ron Achiel 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2017,46(2):278-286

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Genetic Variation and Population Structure of the Grape Powdery Mildew Fungus, <Emphasis Type="Italic">Erysiphe necator</Emphasis>, in Southern France     

Jean-Pierre?PérosEmail author  Claire?Troulet  Mika?l?Guerriero  Corinne?Michel-Romiti  Jean-Loup?Notteghem 《European journal of plant pathology / European Foundation for Plant Pathology》2005,113(4):407-416

Erysiphe necator, the causative agent of powdery mildew in grapevine, was introduced into Europe from North America during the middle of the 19th century. Our objective was to analyze the genetic variation and the population structure of the fungus in southern France. The sample comprised 101 isolates and was mainly of flag shoot origin, i.e., infection of sprouting shoots after overwintering of mycelium in buds. RAPD analysis identified different haplotypes that clustered in two genetic groups (A and B). The most frequent haplotypes of each group were found in several different locations in two areas separated by 100 km and throughout the 3 year period. Several haplotypes of both groups originated from flag shoots and were recovered over successive years indicating that there is no correlation between genetic group and overwintering mode. All isolates of group A were of mating type +, but those in group B could be either + or −. Lower genotypic diversity was detected within group A than within group B. These results were consistent with the hypothesis that group A reproduces only asexually.  相似文献