Comparison of Chemical Composition and Antioxidant Capacity of Fruit,Flower and Bark of Viburnum opulus     

Polka  Dominika  Podsędek  Anna  Koziołkiewicz  Maria 《Plant foods for human nutrition (Dordrecht, Netherlands)》2019,74(3):436-442

Plant Foods for Human Nutrition - In this work, the profiles of phenolics, fiber, pectins, sugars, organic acids and carotenoids, vitamin C, ash, protein and fat contents, as well as antioxidant...  相似文献   

Expression of progesterone receptor membrane component 1, serpine mRNA binding protein 1 and nuclear progesterone receptor isoforms A and B in the bovine myometrium during the estrous cycle and early pregnancy     

Slonina D  Kowalik MK  Kotwica J 《The Journal of reproduction and development》2012,58(3):288-294

The aim of this study was to investigate the (1) expression of progesterone membrane component 1 (PGRMC1), serpine mRNA binding protein 1 (SERBP1) and progesterone receptor (PR) mRNA and (2) protein expression levels of PGRMC1, SERBP1 and PR isoforms A and B in the bovine myometrium during the estrous cycle and early pregnancy. Uteri from cows on days 1-5, 6-10, 11-16 and 17-21 of the estrous cycle and weeks 3-5, 6-8 and 9-12 of pregnancy were used (n=5-6 per period). There were no changes (P>0.05) in PGRMC1 mRNA expression during the estrous cycle, while expression of SERBP1 and PR mRNA was the lowest (P<0.05) on days 11-16 relative to other days of the cycle. The highest mRNA expression of PGRMC1, SERBP1 and PR was found during pregnancy. There were no changes (P>0.05) in SERBP1 protein expression in cycling and pregnant cows, while the highest (P<0.05) PGRMC1 protein expression was found during weeks 3-5 of pregnancy. Similar protein expression profiles for PRA and PRB were found, and protein levels were highest on days 1-5 of the estrous cycle. From day 6 of the cycle, PRA and PRB protein expression decreased and were maintained at this lower level during pregnancy. In conclusion, our study assessed mRNA and protein expression levels of PGRMC1, SERBP1 and PR in the bovine myometrium during the estrous cycle and the first trimester of pregnancy. It is possible that progesterone (P4) affects myometrial function in a genomic and nongenomic manner.  相似文献   

Atmospheric composition calculations for evaluation of climate scenarios     

M. S. Krol  H. J. Van Der Woerd 《Water, air, and soil pollution》1994,76(1-2):259-281

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An atmosphere-ocean model for integrated assessment of global change     

B. J. De Haan  M. Jonas  O. Klepper  J. Krabec  M. S. Krol  K. Olendrzyński 《Water, air, and soil pollution》1994,76(1-2):283-318

This paper describes the atmosphere-ocean system of the integrated model IMAGE 2.0. The system consists of four linked models, for atmospheric composition, atmospheric climate, ocean climate and for ocean biosphere and chemistry. The first model is globally averaged, the latter are zonally averaged with additional resolution in the vertical. The models reflect a compromise between describing the physical, chemical and biological processes and moderate computational requirements. The system is validated with direct observations for current conditions (climate, chemistry) and is consistent with results from General Circulation Model experiments. The system is used in the integrated setting of the IMAGE 2.0 model to give transient climate projections. Global surface temperature is simulated to increase by 2.5 K over the next century for socio-economic scenarios with continuing economic and population growth. In a scenario study with reduced ocean circulation, the climate system and the global C cycle are found to be appreciably sensitive to such changes.  相似文献   

Insektizide und phytotoxische Wirkung von Steinkohlenflugasche     

Christian Ulrichs  Dominika Dolgowski  Tanja Mucha  Christoph Reichmuth  Inga Mewis 《Gesunde Pflanzen》2005,57(5):110-116

Zusammenfassung  Im Rahmen eines Umweltgutachtens wurde die phytotoxische und insektizide Wirkung von Steinkohlenflugasche untersucht. Als Testorganismen dienten die Pflanzen Tropaeolum majus (Kapuzinerkresse) und Lepidium sativum (Brunnenkresse) sowie die Vorratsschädlinge Plodia interpunctella (Dörrobstmotte), Tenebrio molitor (Mehlkäfer) und Sitophilus granarius (Kornkäfer). Gezeigt werden konnte, dass die verwendete Steinkohlenflugasche bei einem aus der Literatur entnommenen theoretischen täglichen Flugstaubniederschlag von 1 g/m² keine phytotoxischen bzw. insektiziden Eigenschaften aufwies. Selbst eine zehnfach erhöhte Dosis von 10 g/m² hatte innerhalb von 2 Tagen keine erhöhte Mortalität von Dörrobstmottenlarven bzw. über einen Zeitraum von 12 Tagen keine erhöhte Mortalität von Mehlkäfern (alle Entwicklungsstadien) zur Folge. Für Kornkäfer ergab sich eine leichte Erhöhung der Mortalität auf 2 % innerhalb von 12 Tagen nach einer Dosierung von 5 g/m². Die Mortalitätsrate von Kornkäfern erhöhte sich nach Applikation von 125 mg Flugasche auf eine Fläche von 50 cm² innerhalb von 12 Tagen von 6 % in der Kontrolle auf 14 %. Eine mit Diatomeenerde zur Positivkontrolle durchgeführte Versuchsreihe hatte hingegen bei gleich hoher Dosierung eine 100 %ige Abtötung aller adulten Kornkäfer zur Folge. Starke Pflanzausfälle waren erst bei einem komplett aus Flugasche bestehendem Substrat zu verzeichnen. Nur geringfügig waren die Wuchsleistungen der verwendeten Pflanzen ab einem Flugascheanteil von 50 % im Substrat beeinträchtigt.

Christian UlrichsEmail:

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The genetic basis of singlet oxygen-induced stress responses of Arabidopsis thaliana     

Wagner D  Przybyla D  Op den Camp R  Kim C  Landgraf F  Lee KP  Würsch M  Laloi C  Nater M  Hideg E  Apel K 《Science (New York, N.Y.)》2004,306(5699):1183-1185

Plants under oxidative stress suffer from damages that have been interpreted as unavoidable consequences of injuries inflicted upon plants by toxic levels of reactive oxygen species (ROS). However, this paradigm needs to be modified. Inactivation of a single gene, EXECUTER1, is sufficient to abrogate stress responses of Arabidopsis thaliana caused by the release of singlet oxygen: External conditions under which these stress responses are observed and the amounts of ROS that accumulate in plants exposed to these environmental conditions do not directly cause damages. Instead, seedling lethality and growth inhibition of mature plants result from genetic programs that are activated after the release of singlet oxygen has been perceived by the plant.  相似文献   

Can nitrogen input mapping from aerial imagery improve nitrous oxide emissions estimates from grazed grassland?     

Maire  Juliette  Gibson-Poole  Simon  Cowan  Nicholas  Krol  Dominika  Somers  Cathal  Reay  Dave S.  Skiba  Ute  Rees  Robert M.  Lanigan  Gary J.  Richards  Karl G. 《Precision Agriculture》2022,23(5):1743-1774

Precision Agriculture - Most nitrogen (N) lost to the environment from grazed grassland is produced as a result of N excreted by livestock, released in the form of nitrous oxide (N2O) emissions,...  相似文献   

The UVA and aqueous stability of flavonoids is dependent on B-ring substitution     

Maini S  Hodgson HL  Krol ES 《Journal of agricultural and food chemistry》2012,60(28):6966-6976

Flavonols such as kaempferol and quercetin are believed to provide protection against ultraviolet (UV)-induced damage to plants. Recent in vitro studies have examined the ability of flavonols to protect against UV-induced damage to mammalian cells. Stability of flavonols in cell culture media, however, has been problematic, especially for quercetin, one of the most widely studied flavonols. As part of our investigations into the potential for flavonols to protect skin against UV-induced damage, we have determined the stability of a series of flavonols that differ only in the number of substituents on the B-ring. We measured the stability of these flavonols over time to UVA radiation, Dulbecco's modified Eagle's medium (DMEM), and Dulbecco's phosphate-buffered saline (DPBS) using high performance liquid chromatography with UV detection (HPLC-UV). The identification of the breakdown products of flavonols was accomplished by using a hybrid quadrupole linear ion trap mass spectrometer coupled with liquid chromatography. Tandem mass spectrometric analysis (MS/MS) of flavonol photoproducts was confirmed by comparing with the known standard samples. We have determined that flavonol stability decreases with increasing B-ring substitution, suggesting that future investigation of potential photoprotective flavonols will need to be cognizant of this trend.  相似文献   

Experimental host range and histopathology of white spot syndrome virus (WSSV) infection in shrimp, prawns, crabs and lobsters from India   总被引：5，自引：0，他引：5  

K. V. Rajendran  K. K. Vijayan  T. C. Santiago  R. M. Krol 《Journal of fish diseases》1999,22(3):183-191

Experimental studies were conducted by injecting or feeding white spot syndrome virus (WSSV) derived from infected shrimp, Penaeus monodon (Fabricius), collected from the south-east coast of India, to five species of shrimp, two species of freshwater prawns, four species of crabs and three species of lobsters. All species examined were susceptible to the virus. Experimental infections in the shrimp had the same clinical symptoms and histopathological characteristics as in naturally infected P. monodon . A cumulative mortality of 100% was observed within 5–7 days in shrimp injected with WSSV and 7–9 days in shrimp fed with infected tissue. Two species of mud crab, Scylla sp., survived the infection for 30 days without any clinical symptoms. All three species of lobsters, Panulirus sp., and the freshwater prawn, Macrobrachium rosenbergii (De Man), survived the infection for 70 days without clinical symptoms. However, bioassay and histology using healthy P. monodon revealed that crabs, prawns and lobsters may act as asymptomatic carriers/reservoir hosts of WSSV. This is the first report to suggest the carrier/reservoir capacity of these hosts through histological and bioassay evidences. Ultrastructural details of the virus in experimentally infected shrimp, P. vannamei , (Boone), were also studied.  相似文献