Decreased common scab incidence after foliar sprays of daminozide     

A. H. McIntosh 《Potato Research》1979,22(4):361-363

Summary In four small trials in two fields infested withStreptomyces scabies, potato foliage (cv. Maris Piper) was sprayed with solutions of the growth retardant daminozide in May–June. The sprays roughly halved the amount of scab in one field but were less effective in the other. The decrease in scab was not influenced by changes in daminozide concentration (3–10 g litre), by varying the timing of single sprays (mainly in June) or by spraying more than once. Yields of tubers were unaffected.  相似文献   

Fructokinase,Fructans, Intestinal Permeability,and Metabolic Syndrome: An Equine Connection?     

Richard J. Johnson  Chris Rivard  Miguel A. Lanaspa  Silvia Otabachian-Smith  Takuji Ishimoto  Christina Cicerchi  Peter R. Cheeke  Bridgett McIntosh  Tanja Hess 《Journal of Equine Veterinary Science》2013

Fructose is a simple sugar present in honey and fruits, but can also exist as a polymer (fructans) in pasture grasses. Mammals are unable to metabolize fructans, but certain gram-positive bacteria contain fructanases and can convert fructans to fructose in the gut. Recent studies suggest that fructose generated from bacteria or directly obtained from the diet can induce both increased intestinal permeability and features of metabolic syndrome, especially the development of insulin resistance. The development of insulin resistance is driven in part by the metabolism of fructose by fructokinase C in the liver, which results in oxidative stress in the hepatocyte. Similarly, the metabolism of fructose in the small bowel by intestinal fructokinase may lead to increased intestinal permeability and endotoxemia. Although speculative, these observations raise the possibility that the mechanism by which fructans induce laminitis could involve intestinal and hepatic fructokinase. Further studies are indicated to determine the role of fructanases, fructose, and fructokinase in equine metabolic syndrome and laminitis.  相似文献   

RAPD-based assessment of genetic relationships among and within American ginseng (Panax quinquefolius L.) populations and their implications for a future conservation strategy     

Erin M. Schlag  Marla S. McIntosh 《Genetic Resources and Crop Evolution》2012,59(7):1553-1568

American ginseng (Panax quinquefolius) is a native North American medicinal plant that is becoming increasingly vulnerable despite government harvest restrictions. To better understand the genetic diversity and gene flow of American ginseng, we studied RAPD variation in cultivated and wild populations. Classical and Bayesian analogues of genetic diversity statistics were estimated in seven wild and two cultivated populations. The wild populations were more highly structured (G _stβ  = 0.41) than the cultivated populations (G _stβ  = 0.24). The genetic diversity within populations ranged from H _eβ  = 0.05 to 0.38. Based on genetic pairwise distances, six of the wild populations clustered with the locally-derived cultivated population, while one wild population was more similar to the non-local cultivated population than the local populations. This wild population was highly diverse (P = 1.0; U = 1.0) suggesting that it was supplemented from exotic seed. A set of eight RAPD markers was identified that differentiated plants of local and non-local origin. As a conservation strategy, we recommend that regional gene banks be established based on molecular and geographic diversity to preserve the locally adapted germplasm. These regional gene banks would serve as a conservation tool and also provide a source of genes for genetic improvement of cultivated ginseng.  相似文献   

Avalanche Safety Practices Among Backcountry Skiers and Snowboarders in Jackson Hole in 2016     

Ty B. Nichols  Alana C. Hawley  William R. Smith  Albert R. Wheeler  Scott E. McIntosh 《The Forestry Chronicle》2018,29(4):493-498

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Wilderness Medical Society Consensus Guidelines for the Prevention and Treatment of Acute Altitude Illness     

Andrew M. Luks  Scott E. McIntosh  Colin K. Grissom  Paul S. Auerbach  George W. Rodway  Robert B. Schoene  Ken Zafren  Peter H. Hackett 《The Forestry Chronicle》2010,21(2):146-155

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Benign masses in the pericardium of two dogs   总被引：1，自引：0，他引：1  

DJ SIMPSON  GB HUNT  DB CHURCH  JA BECK 《Australian veterinary journal》1999,77(4):225-229

Two miniature Schnauzer dogs were treated for pericardial masses. In one dog the mass consisted of necrotic fat that was attached to the apex of the pericardium by a pedicle. No obvious communication with the abdomen was present. The second dog had a peritoneopericardial hernia associated with a chronic cystic haematoma. In each case the mass was presumed to have arisen following congenital displacement of the omentum into the pericardium. The pericardial mass was removed and subtotal pericardectomy performed in both dogs. Recovery was complete in each case.  相似文献   

Genetic relationship between the adult plant resistance gene Lr12 and the complementary gene Lr31 for seedling resistance to leaf rust in common wheat     

Singh  Park  & McIntosh 《Plant pathology》1999,48(5):567-573

A resistant phenotype similar to that conferred in wheat by the complementary genes Lr27  +  Lr31 was produced in the progeny of intercrosses of cultivars carrying Lr27 and a line possessing Lr12 . This confirms that Lr12 is either completely linked with Lr31 or is the same gene. On the basis of these findings and that Lr31 is located on chromosome 4BS, it is concluded that Lr12 must also be located on 4BS. Adult-plant genetic tests confirm that the Australian wheat cultivar Timgalen carries Lr12 , and stocks with Lr12 alone were established from this cultivar.  相似文献   

Role of Leptin in Modulating Neuroendocrine Function: A Metabolic Link between the Brain-Pituitary and Adipose Tissue   总被引：1，自引：0，他引：1  

CR Barb  JB Barrett  RR Kraeling  GB Rampacek 《Reproduction in domestic animals》1999,34(3-4):111-125

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Generation of Paramoeba perurans clonal cultures using flow cytometry and confirmation of virulence          下载免费PDF全文

C Collins  M Hall  D Bruno  J Sokolowska  L Duncan  R Yuecel  U McCarthy  M J Fordyce  C C Pert  R McIntosh  Z MacKay 《Journal of fish diseases》2017,40(3):351-365

Amoebic gill disease (AGD) in farmed Atlantic salmon is caused by the amoeba Paramoeba perurans. The recent establishment of in vitro culture techniques for P. perurans has provided a valuable tool for studying the parasite in detail. In this study, flow cytometry was used to generate clonal cultures from single‐sorted amoeba, and these were used to successfully establish AGD in experimental Atlantic salmon. The clonal cultures displayed differences in virulence, based on gill scores. The P. perurans load on gills, determined by qPCR analysis, showed a positive relationship with gill score, and with clonal virulence, indicating that the ability of amoebae to proliferate and/or remain attached on gills may play a role in virulence. Gill scores based on gross signs and histopathological analysis were in agreement. No association between level of gill score and specific gill arch was observed. It was found that for fish with lower gill scores based on histopathological examination, gross examination and qPCR analysis of gills from the same fish were less successful in detecting lesions and amoebae, respectively.  相似文献   

Use of a modified open patch-graft technique and valvulectomy for correction of severe pulmonic stenosis in dogs: eight consecutive cases     

GB HUNT  MRB PEARSON†  CR BELLENGER†  R MALIK† 《Australian veterinary journal》1993,70(7):244-248

SUMMARY A modified open patch-graft technique was used to correct congenital pulmonic stenosis in 8 dogs. Pulmonary valve dysplasia was moderate to severe in all cases, based upon clinical and echocardiographic criteria, and 3 dogs were in right-sided congestive heart failure at the time of surgery. Seven of the 8 dogs survived the surgery. One surviving dog displayed cerebral cortical dysfunction, the remaining 6 had no detectable neurological sequelae. Right ventricular failure was alleviated in all 7 surviving dogs, but right ventricular dilatation persisted post-operatively. Pulmonary valvulectomy and open patch-grafting provides an effective means of alleviating signs of congestive heart failure caused by pulmonary valve dysplasia, even In the presence of severe infundibular hypertrophy and dynamic outflow obstruction.  相似文献