Transgenic rice lines that include barley genes have increased tolerance to low iron availability in a calcareous paddy soil   总被引：2，自引：0，他引：2  

Motofumi SUZUKI  Kendi Claudio MORIKAWA  Hiromi NAKANISHI  Michiko TAKAHASHI  Masahiko SAIGUSA  Satoshi MORI  Naoko K. NISHIZAWA 《Soil Science and Plant Nutrition》2008,54(1):77-85

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Importance of contact between rice roots and co-situs applied fertilizer granules on iron absorption by paddy rice in a calcareous paddy soil     

Claudio Kendi MORIKAWA  Masahiko SAIGUSA  Naoko Kishi NISHIZAWA  Satoshi MORI 《Soil Science and Plant Nutrition》2008,54(3):467-472

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Differential host gene expression in cells infected with highly pathogenic H5N1 avian influenza viruses     

Sarmento L  Afonso CL  Estevez C  Wasilenko J  Pantin-Jackwood M 《Veterinary immunology and immunopathology》2008,125(3-4):291-302

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Distribution of mast cell subtypes and immune cell populations in canine intestines: evidence for age-related decline in T cells and macrophages and increase of IgA-positive plasma cells     

Kleinschmidt S  Meneses F  Nolte I  Hewicker-Trautwein M 《Research in veterinary science》2008,84(1):41-48

The distribution and numbers of leucocytes and mast cells (MC) in the canine gastrointestinal tract of three different age groups was investigated immunhistochemically. In all age groups, CD3+ T cells were more prominent in the villus region than in the crypt areas without differences between intestinal segments, whereas macrophages were more randomly distributed. Kresylecht-violet and tryptase-positive MC were prominent in pericrypt regions with statistic significances. Chymase-bearing mast cells, IgA-, IgG- and IgM-containing cells did not show significant differences in their distribution but, except for IgG-positive cells, subjective trends with increasing numbers towards the crypts exist. The reasons for the distribution of T cells, macrophages, immunoglobulin-containing cells and mast cells are not clear. Lamina propria CD3+ T cells and macrophages significantly decreased whilst a significant increase of IgA-containing plasma cells with increasing age was found. For mast cell subtypes, IgG- and IgM-containing cells no significant changes in numbers with increasing age exist.  相似文献   

Effects of road transportation on lymphocyte subsets in calves     

Riondato F  D'Angelo A  Miniscalco B  Bellino C  Guglielmino R 《Veterinary journal (London, England : 1997)》2008,175(3):364-368

The effect of transportation on peripheral blood lymphocyte subsets in 24 calves was investigated by flow cytometry. Blood was collected before departure, on arrival, at 24h and 1 week after arrival. Highest leucocyte and neutrophil counts, associated with increased concentrations of cortisol and catecholamines, indicated that stress was maximal upon arrival. At this time, a decrease in the percentages of all T lymphocyte subsets was evident, while they did not decrease as absolute counts. The proportion of CD21(+) cells did not change, indicating that the relative reduction of T lymphocyte subsets was not related to an increase in B lymphocytes. These variations may be due to the increase of a natural killer (NK) cell subset. NK cell expansion, together with increasing lymphocyte count and increasing major histocompatibility complex class II expression, may indicate stress-induced stimulation of the immune system.  相似文献   

Transvenous coil embolisation for the treatment of single congenital portosystemic shunts in six dogs     

Bussadori R  Bussadori C  Millán L  Costilla S  Rodríguez-Altónaga JA  Orden MA  Gonzalo-Orden JM 《Veterinary journal (London, England : 1997)》2008,176(2):221-226

This article describes the treatment of single congenital portosystemic shunts (CPSs) (intrahepatic and extrahepatic) using an interventional radiology technique involving embolisation of anomalous vessels with percutaneous coils. Briefly, a multipurpose catheter was introduced into the caudal vena cava and then into the portosystemic shunt. An autoexpandable stent was placed in the caudal vena cava, next to the shunt, in order to avoid coil migrations, and a cobra-like vascular catheter was used to pass through the stent and to place the coils in the shunt. This technique was used for treatment of CPS in six dogs. The results indicate that percutaneous embolisation of a CPS using coils, a less invasive technique than the traditional surgical technique, may result in complete closure of the anomalous vessel without development of portal hypertension.  相似文献   

Diverse landscapes have a higher abundance and species richness of spring wild bees by providing complementary floral resources over bees’ foraging periods     

Rachel E. Mallinger  Jason Gibbs  Claudio Gratton 《Landscape Ecology》2016,31(7):1523-1535

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Morphological evaluation of olive germplasm present in Tuscany region     

Claudio Cantini  Antonio Cimato  Graziano Sani 《Euphytica》1999,109(3):173-181

Undesirable characteristic of rapeseed oil is a relatively high level of linolenic acid (18:3), which is easily oxidized leading to rancidity and a shortened shelf life of the oil. Previous attempts to reduce linolenic acid levels in rapeseed oil through breeding have been impaired by complex genetics and strong environmental sensitivity of this trait. Therefore, our objective was to develop molecular markers for low linolenic acid that could facilitate the breeding of low linolenic rapeseed. Bulked segregant analysis was employed to identify two RAPD markers associated with 18:3 in a doubled haploid population segregating for linolenic and erucic acid levels. Based on analysis of individual DH lines, the markers RM350 and RM574, representing two independent loci, accounted for a total of 39% of the genetic variability in this population. This marker RM350 alone accounted for 25% genetic variation for this trait with no evidence of recombination. Significant interlocus interaction found between the markers RM350 and RM574 suggested that epistasis was involved in the genetic control of 18:3 level in this population. Another marker designated as RM322, which was independent of the other two, was found significantly associated with the erucic acid level and oil content. RAPD markers identified in this study should be a useful tool for the early detection of low linolenic, or low or high erucic acid genotypes in rapeseed breeding programs based on doubled haploids. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Immobilization of the pesticide 2,4‐dichlorophenoxyacetic acid on a silica gel surface     

Alexandre G S Prado  Claudio Airoldi 《Pest management science》2000,56(5):419-424

A route for the immobilization of 2,4‐dichlorophenoxyacetic acid (2,4‐D) on silica gel has been developed. In the first step the precursor was prepared by reacting the silylating agent 3‐(trimethoxysilyl)propylamine with silica gel. Nitrogen analysis of this anchored compound showed the presence of 1.16 mmol of amine groups per gram of support. The herbicide was covalently bonded to the amine groups previously anchored onto silica gel. Infrared, [¹³C] and [²⁹Si] NMR spectra supported the reaction between the nitrogen of the amine group of the anchored silica with the carbon on the para‐position of the aromatic ring of 2,4‐D. The reaction yield, 90.3%, was confirmed through elemental analysis. © 2000 Society of Chemical Industry  相似文献   

A new record of the freshwater pearl mussel Margaritifera margaritifera L. (Bivalvia,Unionoida) from the River Narcea (Asturias,north‐western Spain)     

C. lvarez‐Claudio  P. García‐Rovs  R. Ocharan  J.A. Cabal  F.J. Ocharan  M.A. lvarez 《水产资源保护:海洋与淡水生态系统》2000,10(2):93-102

1. A population of the freshwater pearl mussel Margaritifera margaritifera L. was found in the River Narcea in the province of Asturias (north‐western Spain). Primary analysis of the population shows that it is well distributed along the river and is particularly abundant in shady river banks with a gravel substrate. 2. The length of living mussels ranges between a minimum of 22 mm and a maximum of 116 mm, with most in the size class between 65 mm and 70 mm. There is a good proportion of young mussels, although no fertile females were found in the course of the investigation. 3. Although there is no specific legislation in Spain for the protection of M. margaritifera, it has recently been proposed to include M. margaritifera in the Spanish List of Threatened Species as ‘vulnerable’. 4. Although the River Narcea seems to provide suitable conditions for the pearl mussel (water quality, available salmonid hosts, etc.), the main conservation measures must be directed at avoiding river fragmentation from dams, channelization and organic enrichment from individual farms or towns situated close to the river bank. Copyright © 2000 John Wiley & Sons, Ltd.  相似文献