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11.
Suppression of soil-borne pathogens of tomato by composts derived from agro-industrial wastes abundant in Mediterranean regions 总被引：1，自引：0，他引：1
Spyridon Ntougias Kalliope K. Papadopoulou Georgios I. Zervakis Nektarios Kavroulakis Constantinos Ehaliotis 《Biology and Fertility of Soils》2008,44(8):1081-1090
We studied nine composts derived from wastes and by-products of the olive oil, wine, and Agaricus mushroom agro-industries. They were mixed with peat at 1:3 w w
−1 ratios and comparatively evaluated in pot experiments to assess suppressiveness against soil-borne and foliar pathogens of
tomato. All compost amendments demonstrated high levels of suppressiveness against Phytophthora nicotianae Breda de Haan in tomato, when they were applied directly after curing (T0) indicating the occurrence of a “general suppression
phenomenon” (81–100% decrease in plant disease incidence). They were, however, relatively less effective when applied 9 months
after curing (T1, 55–100% disease decrease). Suppressiveness against Fusarium oxysporum f.sp. radicis-lycopersici Jarvis & Shoemaker was relatively lower and varied widely among composts (8–95% and 22–87% decrease in plant disease incidence
for T0 and T1, respectively). Three of the composts conferred induced systemic resistance against the foliar pathogen Septoria lycopersici Speg. Biotic properties were determined, including respiration, fluorescein diacetate hydrolysis, and β-glucosidase activity of composts. The comparative evaluation of the nine composts revealed no shared critical biotic or abiotic
characteristics indicative of their suppressive effects on the soil-borne and foliar pathogens. The complex origin of compost
suppressiveness is discussed and the implementation of individual evaluation of each compost product for a specific use is
advocated. 相似文献
12.
Sod establishment and turfgrass growth as affected by urea–formaldehyde resin foam soil amendment 总被引：1，自引：0，他引：1
Panayiotis A. Nektarios Aimilia-Eleni Nikolopoulou Ioannis Chronopoulos 《Scientia Horticulturae》2004,100(1-4):203-213
Urea–formaldehyde resin foam (UFRF) has recently been introduced as a soil amendment for turfgrass culture. A field study was performed to evaluate the impact of UFRF on soil physical and chemical properties, sod establishment and turfgrass shoot and root growth. Treatments included a non-amended, sandy loam soil and the same soil amended with UFRF at a rate of 20% (v/v) incorporated into the upper 0.1 m of the substrate. Physical and chemical analyses of the two substrates involved the determination of bulk density, total porosity, air-filled porosity at 0.4 m, moisture release curve, pH and electrical conductivity. Turfgrass growth was determined through several measurements that included shoot growth rate, root growth rate and monitoring of three root architecture parameters namely, total root length, total root area and mean root diameter. Turfgrass establishment was evaluated by measuring the vertical force applied to detach the sod from the substrate.UFRF amendment did not influence pH and EC and provided minimal alterations (non-significant) in soil physical properties by slightly increasing total porosity, easily available water and air-filled porosity, and by reducing bulk density. The impact of UFRF amendment improved cumulative clipping yield in five sampling dates but root growth and sod establishment rate were better than the control only on one sampling date. There appears to be limited benefit in amending soil with UFRF. 相似文献
13.
14.
Fragkiadaki EG Vaccari G Ekateriniadou LV Agrimi U Giadinis ND Chiappini B Esposito E Conte M Nonno R 《Veterinary research》2011,42(1):104
ABSTRACT: One hundred and four scrapie positive and 77 negative goats from 34 Greek mixed flocks were analysed by prion protein gene sequencing and 17 caprine scrapie isolates from 11 flocks were submitted to molecular isolate typing. For the first time, the protective S146 variant was reported in Greece, while the protective K222 variant was detected in negative but also in five scrapie positive goats from heavily infected flocks. By immunoblotting six isolates, including two goat flockmates carrying the K222 variant, showed molecular features slightly different from all other Greek and Italian isolates co-analysed, possibly suggesting the presence of different scrapie strains in Greece. 相似文献
15.
Eirini Kanata Cynthia Humphreys-Panagiotidis Nektarios D Giadinis Nikolaos Papaioannou Minas Arsenakis Theodoros Sklaviadis 《Veterinary research》2014,45(1):43
The present study investigates the potential use of the scrapie-protective Q211 S146 and K222 caprine PRNP alleles as targets for selective breeding in Greek goats. Genotyping data from a high number of healthy goats with special emphasis on bucks, revealed high frequencies of these alleles, while the estimated probabilities of disease occurrence in animals carrying these alleles were low, suggesting that they can be used for selection. Greek goats represent one of the largest populations in Europe. Thus, the considerations presented here are an example of the expected effect of such a scheme on scrapie occurrence and on stakeholders. 相似文献
16.
Spanou C Bourou G Dervishi A Aligiannis N Angelis A Komiotis D Skaltsounis AL Kouretas D 《Journal of agricultural and food chemistry》2008,56(16):6967-6976
Recently, phytochemical compounds present in legumes have gained a lot of interest because they are considered to be possible chemopreventive agents. In the present study, 14 polyphenolic compounds were extracted and identified from two unique varieties of Leguminosae family plants cultivated in Greece and screened for their antioxidant and chemopreventive properties. Ten polyphenolic fractions, which are mainly mixtures of two compounds and five pure flavonoids, were isolated from the methanolic extracts of aerial plant parts of Vicia faba and Lotus edulis (Leguminosae), respectively. All of these fractions exhibited significant DPPH(*) radical scavenging capacity. Furthermore, they exerted significant protective activity against free radical-induced DNA damage. This activity was more potent against ROO(*) radical-induced DNA damage than against that induced by OH(*) radicals. Finally, they exhibited significant ability to inhibit the activity of the topoisomerase I enzyme. These results imply that the polyphenolic compounds identified in the fractions were responsible of the observed properties of the fractions and the initial extracts and indicate different mechanisms by which these phenolic compounds may act as chemopreventive agents. 相似文献
17.
Giadinis ND Symeoudakis S Papadopoulos E Lafi SQ Karatzias H 《Tropical animal health and production》2012,44(7):1561-1565
This study was conducted in the Larnaca area of Cyprus and included 28 goat and 15 sheep flocks suffering from neonatal diarrhoea (>20%). Faecal samples from diarrhoeic animals revealed that 25 of the 28 goat and 12 of the 15 sheep flocks were positive for Cryptosporidium. The ELISA was more accurate in the diagnosis of cryptosporidiosis compared to the Ziehl-Neelsen staining technique (P?相似文献
18.
Siachos Nektarios Panousis Nikolaos Valergakis Georgios E. 《Tropical animal health and production》2019,51(8):2431-2436
Tropical Animal Health and Production - Individual milk urea nitrogen (MUN) levels ≥?19.63 mg/dL have been recently reported to significantly affect fertility. The objectives... 相似文献
19.
Nektarios D. Giadinis Shawkat Q. Lafi Evi Ioannidou Elias Papadopoulos Konstantinos Terpsidis George Karanikolas Evanthia J. Petridou Christos Brozos Harilaos Karatzias 《The Canadian veterinary journal. La revue veterinaire canadienne》2013,54(11):1080-1082
The efficacy of sulfadimidine (4 doses of 33 mg/kg body weight, IM, q48h) against Toxoplasma abortion was assessed in 3 dairy goat herds suffering from Toxoplasma abortions during the 4th month of gestation. This protocol was very effective for the control of Toxoplasma abortions (P < 0.01). 相似文献
20.
Chorianopoulos N Kalpoutzakis E Aligiannis N Mitaku S Nychas GJ Haroutounian SA 《Journal of agricultural and food chemistry》2004,52(26):8261-8267
The chemical composition of the essential oils obtained from the species restricted to Greece and the eastern Mediterranean region, Satureja spinosa L. and Thymus longicaulis L.; species endemic to central and south Greece, Satureja parnassica ssp. parnassica Heldr. and Sart ex Boiss.; species endemic to the island of Crete, Origanum dictamnus L.; and species widely distributed in the Mediterranean region, Satureja thymbra L. and Origanum vulgare L. subsp. hirtum, were determined by gas chromatography (GC) and GC/mass spectrometry (MS) analysis. The in vitro antibacterial activities of the essential oils were evaluated against a panel of five foodborne bacteria (Escherichia coli 0157:H7 NCTC 12900, Salmonella enteritidis PT4, Staphylococcus aureus ATCC 6538, Listeria monocytogenes ScottA, and Bacillus cereus FSS 134). The analytical data indicated that various monoterpene hydrocarbons and phenolic monoterpenes constitute the major components of the oils, but their concentrations varied greatly among the oils examined. The antibacterial assay results showed that 5 muL doses of the essential oils extracted from the endemic Satureja species in Greece possess remarkable bactericidal properties, which are clearly superior as compared to those of Origanum and Thymus species essential oils. Therefore, they represent an inexpensive source of natural mixtures of antibacterial compounds that exhibit potentials for use in food systems to prevent the growth of foodborne bacteria and extend the shelf life of the processed food. 相似文献