Staining of the Stem Tissue of Plants by Triphenyltetrazolium Chloride     

Waugh TD 《Science (New York, N.Y.)》1948,107(2776):275

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Severe hyperkalemia presenting with wide‐complex tachycardia in a puppy with acute kidney injury secondary to leptospirosis          下载免费PDF全文

Jean V. Rubanick DVM  DACVECC  Ryan C. Fries DVM  DACVIM  Carly E. Waugh DVM  DACVIM  Medora B. Pashmakova DVM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2016,26(6):858-863

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Impact of novel endophytes in perennial ryegrass on herbage production and insect pests from pastures under dairy cow grazing in northern New Zealand     

E. R. Thom  A. J. Popay  C. D. Waugh  E. M. K. Minneé 《Grass and Forage Science》2014,69(1):191-204

Perennial ryegrass (Lolium perenne L.) infected with a novel endophyte (AR37 or AR1), Wild‐type endophyte or no endophyte (Nil) was sown with white clover (Trifolium repens L.) in autumn 2005. The pastures were rotationally grazed by dairy cows from 2005–2009. Annual dry matter (DM) yield did not differ but AR37 pastures had a higher ryegrass tiller density, especially after the 2008 summer drought (+130%), and less white clover than did AR1 pastures. Concentrations of alkaloids produced by the Wild‐type association (lolitrem B, ergovaline) followed the same seasonal trends as did the AR37 alkaloids (epoxy‐janthitrems) but summer drought reduced concentrations of lolitrem B and epoxy‐janthitrems to less than half the mid‐summer (February) peak concentrations in the other years. Insect pests were monitored annually between 2006 and 2009. Tiller damage by Argentine stem weevil (Listronotus bonariensis (Kuschel)) was significantly reduced by all endophyte treatments. African black beetle (Heteronychus arator (F.)) populations in soil samples increased during the experiment with Nil > AR1 > Wild‐type = AR37. Root aphid (Aploneura lentisci (Pass.)) infestations followed the pattern AR1 > Nil > Wild‐type = AR37. A lower pest pressure from all insect pests in AR37 pastures is likely to have contributed to this treatment having the highest ryegrass tiller densities.  相似文献   

THE VITAMIN C ACTIVITY OF HEXURONIC ACID FROM SUPRARENAL GLANDS     

Waugh WA  King CG 《Science (New York, N.Y.)》1932,76(1983):630

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The design and catalytic properties of a simplified ribonuclease P RNA   总被引：21，自引：0，他引：21  

D S Waugh  C J Green  N R Pace 《Science (New York, N.Y.)》1989,244(4912):1569-1571

Ribonuclease P (RNase P) RNA is the catalytic moiety of the ribonucleoprotein enzyme that removes precursor sequences from the 5' ends of pre-transfer RNAs in eubacteria. Phylogenetic variation according to recently proposed secondary structure models was used to identify structural elements of the RNase P RNA that are dispensable for catalysis. A simplified RNase P RNA that consists only of evolutionarily conserved features was designed, synthesized, and characterized. Although the simplified RNA (Min 1 RNA) is only 263 nucleotides in length, in contrast to the 354 to 417 nucleotides of naturally occurring RNase P RNAs, its specificity of pre-tRNA cleavage is identical to that of the native enzymes. Moreover, the catalytic efficiencies of the Min 1 RNA and the native RNA enzymes are similar. These results focus the search for the catalytic elements of RNase P RNAs to their conserved structure.  相似文献   

Palatal erosion and oronasal fistulation following covered nasopharyngeal stent placement in two dogs     

Audrey K Cook  Kelley Thieman Mankin  Ashley B Saunders  Carly E Waugh  Laura C Cuddy  Gary W Ellison 《Irish veterinary journal》2013,66(1):8

Treatment options for dogs with nasopharyngeal stenosis include fluoroscopic placement of metallic stents. Reported complications include entrapment of hair and food, obstruction and persistent nasal discharge. Two toy breed dogs were examined for persistent nasal discharge and halitosis at 4 and 20 months after placement of permanent metallic stents for acquired nasopharyngeal stenosis. Full thickness defects were found in the palate of both dogs, with extensive communication between the mouth and the nasal passages. Portions of the metal stent were observed within the lesion in both patients. Additional treatment was declined by the owner of one dog; the stent was removed through the fistula in the other dog. Palatal erosion with secondary oronasal fistulation is a potential complication of nasopharyngeal stent placement in dogs.  相似文献   

Chloroplast DNA variation in European potato cultivars     

R. Waugh  D. R. Glendinning  N. Duncan  W. Powell 《Potato Research》1990,33(4):505-513

Summary The chloroplast DNA of 27 potato cultivars and 2 wild species has been examined by Southern blotting using probes representing the entire chloroplast genome of barley. 16% of the probe × enzyme combinations detected polymorphism between the potato cultivars. Cvs Maris Piper, Croft, Shelagh, Stormont Enterprise and Estima and the wild species could be distinguished from the other cultivars by their chloroplast DNA restriction patterns. These results are discussed in relation to cytoplasmic diversity and potato improvement.  相似文献   

Crop residue destruction strategies that enhance rather than inhibit reproduction of Monosporascus cannonballus   总被引：1，自引：0，他引：1  

M. E. Stanghellini †  M. M. Waugh  K. C. Radewald  D. H. Kim  D. M. Ferrin  T. Turini 《Plant pathology》2004,53(1):50-53

Destruction of infected crop residue is a management strategy commonly recommended for the control of many plant diseases. Based upon knowledge of the biology of the root-infecting fungus Monosporascus cannonballus , this strategy is a likely candidate for use in the management of vine decline of melons caused by this pathogen. Specifically, ascospores, the primary survival structure and inoculum for root infection, are produced on infected melon roots primarily after crop termination. Thus, destruction of infected roots prior to reproduction would be a very practical method of preventing inoculum build-up in soil. Results from this study demonstrated that two plant residue destruction methods commonly used by growers at crop termination [i.e. foliar application of a herbicide (glyphosate) and mechanical destruction of vines] significantly enhanced, relative to untreated controls, the rapidity and extent of pathogen reproduction on infected roots left in field after harvest.  相似文献   

HAEMATOLOGICAL INVESTIGATION OF A MULTIPLE CASE LEUCOSIS HERD     

Corinne K.  Dimmock  P.D. Waugh  † R.J. Rogers 《Australian veterinary journal》1979,55(6):278-281

Adult cattle in a Queensland dairy herd with a history of deaths from lymphosarcoma were sampled regularly over a 4 year period for the identification of animals with persistent lymphocytosis (PL). Twenty-one of 94 animals that were sampled at least 6 times had PL. At the initial sampling 27% of the animals had lymphocytosis. Culling of haematologically positive animals in the first 18 months of the investigation reduced this to 5.3%, but cessation of the culling programme resulted in a gradual increase in the percentage of animals with lymphocytosis. Four deaths from lymphosarcoma occurred in adult animals, but only in the first 18 months of the investigation. Two of these animals had lymphocytosis and two lymphoblastic leukaemia. The calf of one of the latter cows developed lymphoblastic leukaemia and lymphosarcoma by the time it was 6 months of age. Although histological evidence of lymphosarcoma was lacking in a number of clinically normal animals with lymphocytosis, haematological investigation identified a group of animals within the herd that may develop lymphosarcoma.  相似文献   

Autoregulation of Blood Flow     

Johnson PC  Waugh WH  Hinshaw LB 《Science (New York, N.Y.)》1963,140(3563):203-207

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