First report of Moniliophthora roreri causing frosty pod rot (moniliasis disease) of cocoa in Mexico     

W. Phillips-Mora  A. Coutiño  C. F. Ortiz  A. P. López  J. Hernández  M. C. Aime 《Plant pathology》2006,55(4):584-584

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Effect of different extraction methods on fatty acids,volatile compounds,and physical and chemical properties of avocado (Persea americana Mill.) oil     

Moreno AO  Dorantes L  Galíndez J  Guzmán RI 《Journal of agricultural and food chemistry》2003,51(8):2216-2221

Because Mexico is the number one producer of avocados in the world, this fruit has potential as a source for oil extraction. It is appropriate to further investigate the detailed changes that the oil undergoes when different extraction methods are applied. This research paper presents the study of the physical and chemical changes, the fatty acids profile, the trans fatty acid content, and the identification of volatile compounds of the oils from avocado pulp (Persea americana Mill.), obtained by four different extraction methods. The method with the greatest extraction yield was the combined microwave-hexane method. The amount of trans fatty acids produced in the microwave-squeezing treatment was <0.5 g/100 g. On the other hand, the amounts of trans fatty acids produced with the hexane and acetone treatments were 0.52 and 0.87 g/100 g, respectively. The method that caused the slightest modification to the oil quality was a novel combined extraction method of microwave-squeezing proposed by the authors.  相似文献   

Output of gastrointestinal nematode eggs in the feces of captive gazelles (Gazella dama mhorr, Gazella cuvieri and Gazella dorcas neglecta) in a semiarid region of southeastern Spain.     

Juana Ortiz  Rocío Ruiz de Ybá?ez  Teresa Abaigar  Marina Goyena  Magdalena Garijo  Gerardo Espeso  Mar Cano 《Journal of zoo and wildlife medicine》2006,37(3):249-254

Feces from 62 captive African gazelles, including Mhorr gazelles (Gazella dama mhorr), Cuvier's gazelles (Gazella cuvieri), and Dorcas gazelles (Gazella dorcas neglecta), were examined over the course of a year to quantitate nematode egg excretion patterns. Strongyloides sp. eggs appeared only in G. dama during the rainy season. Trichostrongylidae egg excretion showed a marked seasonal variation, with very low levels during the dry and hot period, a finding that is probably attributable to hypobiosis of the predominant species (Camelostrongylus mentulatus). Eggs of the Nematodirus sp., predominantly Nematodirus spathiger, were excreted throughout the year. No seasonal pattern was observed in Trichuris sp. egg excretion.  相似文献   

Oral administration of mebendazole failed to reduce nematode egg shedding in captive African gazelles     

Ortiz J  Ruiz de Ybáñez MR  Abaigar T  Garijo M  Espeso G  Cano M 《The Onderstepoort journal of veterinary research》2001,68(1):79-82

Idiosyncracies are observed in captive wild animals as regards the pharmacokinetics and efficacy of anthelmintics. This could be attributed to such factors as differences in host's metabolism, irregular distribution of anthelmintics due to the way they are administered and worm resistance to anthelmintics. Previously mebendazole was found to be poorly effective when administered in feed. An experiment was conducted to evaluate the efficacy of mebendazole when administered at the dosage rate of 15-20 mg/kg body weight to gastrointestinal nematodes in captive gazelles. Fifty-eight adult gazelles (Gazella cuvieri) were divided into four groups: T1 (animals dosed orally, directly into the mouth), T2 (treated orally, mixed in the water of a herd), T3 (treated orally, mixed in the water of one animal), and T4 (not treated). Individual faecal samples were taken before treatment, and 15 days thereafter. Mean percentages of reduction of egg shedding were calculated for Nematodirus spp., other trichostrongyles, total trichostrongylids, Trichuris spp. and total nematodes. No statistically significant differences were detected between the treatment groups and the control group or among the animals in the three treatment groups.  相似文献   

Scanning electron microscopy of the superficial pineal gland of the 15-day-old rat (Rattus norvegicus)     

Ortiz GG  García JJ  Feria-Velasco A  Rosales-Corral SA  Reiter RJ 《Anatomia, histologia, embryologia》2004,33(3):158-160

The presence of a cortex and medulla in the superficial pineal gland has been a controversial point in the morphology of this structure in mammals. The published reports indicate contradictory data especially in rodents. In this study the pineal gland of 15-day-old male rats (Rattus norvegicus) were studied, using scanning electron microscopy, in an attempt to determine whether or not a cortex and medulla are apparent in the pineal gland of young rats. The superficial pineal gland of the 15-day-old rat exhibited both a cortex and a medulla; these areas exhibited different structural organizations. The cortex had a thickness of 40-80 microm and the cells did not show a particular arrangement. The center of the gland was composed of a medulla, which had a width of 1000-1200 microm, and consisted of cells arranged in cords; its morphology was distinctly different from that of the cortex.  相似文献   

Correction     

Zósimo Huamán  Rodomiro Ortiz  René Gómez 《American Journal of Potato Research》2000,77(4):278-278

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Potential of landrace germplasm for genetic enhancement of white lupin in Egypt     

J.L. Christiansen  S. Raza  B. Jørnsgård  S.A. Mahmoud  R. Ortiz 《Genetic Resources and Crop Evolution》2000,47(4):425-430

Landraces of white lupin (Lupinus albus L.) collected in Egypt were evaluated along with locally developed cultivars and selected foreign germplasm for yield and major morphological characteristics in five different locations. These locations represent different soil types and climatic conditions in Egypt. The results showed an outstanding performance of the local cultivar checks across traditional locations for lupin cultivation, which supports the utilization of local germplasm for further improvement of locally adapted lupins in Egypt. The results further suggest that local landrace germplasm may be an important source of alleles for shortening the vegetative period, reducing plant height and stem length, as well as for improving some yield components as number of pods and seeds per plant. The genotype-by-location interaction was significant for all characteristics. Mass selection in the Egyptian germplasm collection of white lupin has the potential for enhancing yield, especially in germplasm adapted to newly reclaimed desert locations.  相似文献   

Cross prediction in bread wheat germplasm using single seed descent lines     

J. Hill  W.W. Wagoire  R. Ortiz  O. Stølen 《Euphytica》2000,113(1):65-70

Populations of F₆ recombinant inbred lines, generated by single seed descent from a half diallel among eight bread wheat lines adapted to the East African highlands, were used to identify those crosses that were more likely to produce cultivars which combined resistance to yellow rust with improved yield. Crosses having the most resistant line as one parent offered the best prospect of success, particularly those which produced F₁hybrids exhibiting better parent heterosis. For plot grain yield there was a highly significant correlation between the observed and predicted rankings of the recombinant inbred line populations for the proportion of individual lines equalling or surpassing the target value. For yellow rust severity, however, this correlation was non-significant when a target value of zero was used. Adopting a slightly less stringent target of 0.25, coupled with the omission of two aberrant populations, increased this correlation significantly. The plant breeding implications of these results are discussed. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

Carbon sequestration in a limestone quarry mine soil amended with sewage sludge          下载免费PDF全文

G. Ojeda  O. Ortiz  C. R. Medina  I. Perera  J. M. Alcañiz 《Soil Use and Management》2015,31(2):270-278

To reclaim a limestone quarry, 200 and 400 Mg/ha of municipal sewage sludge were mixed with an infertile calcareous substrate and spread as mine soil in 1992. Soil samples were taken 1 week later and again after 17 yr of mine soil rehabilitation so as to assess changes in the amount and persistence of soil organic carbon (SOC). Sludge application increased SOC as a function of the sludge rate at both sampling times. Seventeen years after the sludge amendments, the nonhydrolysable carbon was increased in the 400 Mg/ha of sludge treatment. The recalcitrance of SOC was less in sludge‐amended soils than in the control treatment at the initial sampling, but 17 yr later this trend had reversed, showing qualitative changes in soil organic carbon. The CO₂‐C production had not differed between treatments, yet the percentage of mineralized SOC was less in the high sludge dose. When the size of active (C_active) and slow (C_slow) potentially mineralizable C pools was calculated by curve fitting of a double‐exponential equation, the proportion of C_active was observed to be smaller in the 400 Mg/ha sludge treatment. Soil aggregate stability, represented by the mean weight diameter of water‐stable soil aggregates, was significantly greater in mine soil treated with the high dose of sludge (18.5%) and SOC tended to be concentrated in macro‐aggregates (5–2 mm). Results suggest that SOC content in sludge‐amended plots was preserved due by (i) replacement of the labile organic carbon of sludge by more stable compounds and (ii) protection of SOC in aggregates.  相似文献   

Oxidative autoactivation of latent collagenase by human neutrophils   总被引：32，自引：0，他引：32  

S J Weiss  G Peppin  X Ortiz  C Ragsdale  S T Test 《Science (New York, N.Y.)》1985,227(4688):747-749

The pathological destruction of collagen plays a key role in the development of inflammatory disease states affecting every organ system in the human body. Neutrophils localized at inflammatory sites can potentially degrade collagen by releasing a metalloenzyme, collagenase, which is stored in a latent inactive form. Triggered human neutrophils were shown to release and simultaneously activate their latent collagenase. The activation of the latent enzyme was coupled to an oxidative process that required the generation of a highly reactive oxygen metabolite, hypochlorous acid. Oxidative regulation of latent collagenase activity may be important in the pathogenesis of connective tissue damage in vivo.  相似文献