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Sinisa Djurasevic Svetlana Bojic Biljana Nikolic Ivica Dimkic Zoran Todorovic Jelena Djordjevic Dragana Mitic-Culafic 《Plant foods for human nutrition (Dordrecht, Netherlands)》2018,73(4):295-301
The gut microbiota is composed of a diverse population of obligate and facultative anaerobic microorganisms which are shown to influence host metabolism and immune homeostasis. This study investigated the effects of virgin coconut oil on the weekly fasting glycaemia, daily food and water intake and weekly body mass gain over 16 weeks, as well as the changes in composition of gut microbiota in both non-diabetic and alloxan-induced diabetic rats. Although the intake of virgin coconut oil did not decrease the diabetes-induced hyperglycemia, it affected the secondary parameters, such as food and water intake and average body mass gain. Furthermore, its potential to positively affect the fecal microbiome was proved, since it significantly increased the abundance of probiotic bacteria, such as Lactobacillus, Allobaculum and Bifidobacterium species. 相似文献
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Dragana Bjelić Jelena Marinković Branislava Tintor Nastasija Mrkovački 《Communications in Soil Science and Plant Analysis》2018,49(1):88-98
Plant growth promoting rhizobacteria (PGPR) enhance the plant growth directly by assisting in nutrient acquisition and modulating plant hormone levels, or indirectly by decreasing the inhibitory effects of various pathogens. The aim of this study was to select effective PGPR from a series of indigenous bacterial isolates by plant growth promotion and antifungal activity assays. This study confirmed that most of the isolates from maize rhizosphere were positive for PGPR properties by in vitro tests. Azotobacter and Bacillus isolates were better phosphate solubilizers and producers of lytic enzymes, hydrocyanic acid (HCN), and siderophores than Pseudomonas. Production of indole-3-acetic acid (IAA) and antifungal activity were the highest in Azotobacter, followed by Bacillus and Pseudomonas. The most effective Azotobacter isolates (Azt3, Azt6, Azt12) and Bacillus isolates (Bac10, Bac16) could be used as PGPR agents for improving maize productivity. Further selection of isolates will be necessary to determine their efficiency in different soils. 相似文献
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Bozic Dragana Pavlovic Danijela Bregola Valeria Di Loreto Alessandro Bosi Sara Vrbnicanin Sava 《植物病害和植物保护杂志》2015,122(4):183-188
Journal of Plant Diseases and Protection - Weedy forms of cultivated sunflower (Helianthus annuus) are invasive species widely distributed in several regions of the world and are commonly... 相似文献
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Microsatellite DNA variation within and among invasive populations of Ambrosia artemisiifolia from the southern Pannonian Plain 
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下载免费PDF全文 Although the Pannonian Plain presents one of the areas in Europe most highly infested by Ambrosia artemisiifolia, previously reported population genetic studies of the invasive species have included only a few populations from this region. Our goal was to determine the level of genetic diversity and genetic structure of A. artemisiifolia populations from the southern Pannonian Plain using microsatellite DNA markers. We documented a high level of genetic diversity within the Pannonian populations, as compared with the genetic diversity parameters previously published for the other invasive populations of A. artemisiifolia in Europe. The mean number of alleles per locus (NA) ranged between 6.8 and 9.4, allelic richness (r) between 6.59 and 8.53 and mean number of rare alleles per locus (NR) ranged between 3.4 and 6.4 per analysed population. A low level of among‐population differentiation was detected, with percentage of variation between populations of 3.3%, generally low pairwise FST values (ranged from ?0.007 to 0.152) and also according to principal coordinate analysis. A Bayesian approach revealed that most individuals did not strongly associate with any single genetic cluster, confirming a lack of genetic structuring in the analysed region. Together with the results of quantification of the level of gene flow (Nm = 5.671), these observations indicated a presence of extensive gene exchange and admixture between the populations. Therefore, A. artemisiifolia in the Pannonian Plain region has the potential for rapid expansion. 相似文献
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Bijelić Lidija Puntarić Dinko Gvozdić Vlatka Jurić Dragana Lončarić Zdenko 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2018,68(3):264-272
This is the first study on concentrations of war related elements in dandelion from war effected areas of Croatia. Previous research done on human subjects, soil and water has shown abnormalities in distribution of war associated metals and metalloids in war affected areas compared with peacetime locations. Dandelion, as wide spread perennial herb, is considered as very useful plant in determination of trace elements pollution in various ecosystems. Aim of the research was to try to determine whether concentrations of war related elements (Al, As, B, Ba, Cd, Co, Cr, Cu, Fe, Hg, Li, Mg, Ni, P, Pb, Sb, Si, Sr, U, V and Zn) concentrations in dandelion (Taraxacum officinalle) samples in areas of high intensity of combat activities differ from areas of low intensity of combat activities, and to clarify possible contamination in dandelion as an indicator (and edible) plant with it's role in food chain. Leaves of the dandelion were taken at locations (28 locations at 11 settlements) were divided into two major subgroups: high and low intensity of combat activities, at the locations of major explosions, former minefields, army trenches?…?Analysis was done using ICP-MS and data was interpreted using Mann Whitney test and PCA. Results have shown that there is difference in concentration of war related elements among different locations, with generally, higher concentrations of war elements in war areas compared with control group. Maximum concentrations of As, B, Ba, Cd, Co, Cr, Cu, Li, Mg, Ni, P, Pb, Sb, Si, Sr, U, V and Zn were higher in areas of high intensity of combat activities. When results are compared with similar researches, overall presence of metals and metalloids is legally acceptable, however, there are differences in concentrations between war and peacetime locations. 相似文献
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Marina Piria Predrag Simonović Eleni Kalogianni Leonidas Vardakas Nicholas Koutsikos Davor Zanella Milica Ristovska Apostolos Apostolou Avdul Adrović Danilo Mrdak Ali Serhan Tarkan Dragana Milošević Linda N Zanella Rigers Bakiu F Güler Ekmekçi Metka Povž Kastriot Korro Vera Nikolić Rifat Škrijelj Vasil Kostov Andrej Gregori Michael K Joy 《Fish and Fisheries》2018,19(1):138-169
Fish introductions, particularly in areas of high biological diversity and endemism, represent a major threat for biodiversity. In the Balkan Peninsula, 60 fish species have been introduced to date, of which 36 have become naturalized in inland waters. Since the Balkans are one of the world's 35 biodiversity hot spots, this large presence of alien fish species poses a serious threat for the stability of freshwater ecosystems and the survival of the native ichthyofauna and of aquatic biodiversity in general. The motivation for the introductions, and the historical timeline, varies among the Balkan states. Despite recent attempts to implement and align legislation aimed at preventing the introduction of potentially invasive species, and the implementation of rigorous controls of introductions and increased protection of open waters, the majority of current introductions remain intentional, primarily via aquaculture. This review article provides a historical overview of freshwater fish introductions, the motivation behind them and the current distribution of alien freshwater fishes in the Balkans. The ecological implications and future perspectives concerning alien fish species in the region are also discussed. 相似文献
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BACKGROUND: A Chenopodium album L. biotype surviving in atrazine-treated Serbian corn fields (VC) was compared against atrazine-susceptible (S) and atrazine-resistant (R) standards.RESULTS: Atrazine (2 kg ha(-1)) killed S and VC shoot biomass 15 days after treatment (DAT), but R was only suppressed by 42% and survived 8 kg ha(-1). Atrazine at 2 kg ha(-1) only inhibited VC height by 60% as against 100 and 0% for S and R respectively. Chlorophyll fluorescence (Fv/Fm) and transpiration were insensitive to atrazine in R, but were inhibited by 90 and 100% in S and by 50 and 60% in VC respectively. Decline of Fv/Fm after 2 kg ha(-1) atrazine was stabilized at 3 DAT for the VC biotype.CONCLUSION: A toxicity mitigation mechanism could have facilitated VC survival in an atrazine-treated field. Further knowledge on this mechanism is needed to establish if surviving VC plants are indicators of atrazine resistance evolution in these Serbian corn fields. Variables related to foliar function provided better detection of weed mechanisms to survive herbicide action than the usual shoot biomass measurements. 相似文献
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Biljana Kiprovski Djordje Malenčić Milan Popović Vera Stojšin Dragana Budakov Živko Ćurčić Dario Danojević 《Phytoparasitica》2014,42(2):199-203
The correlation between intensity of lipid peroxidation and changes in antioxidant capacity of sugar beet plants (cv. ‘Drena’) infected with Rhizoctonia solani Kühn isolate (AG 2-2 IIIB group) was studied. Successful inoculation was confirmed by the presence of infection cushions in a cross section of leaf petioles. On the 7th day of the experiment, phenylalanine ammonia-lyase (PAL; EC. 4.3.1.5) activity was in negative correlation with intensified lipid peroxidation process in leaves of sugar beet plants (r= –0 .99). Also, in leaves and roots of inoculated sugar beet plants, total flavonoids content (35% and 20%, respectively) and 1,1-diphenyl-2-picrylhydrazyl (DPPH)-scavenging activity (80% and 55%, respectively) were significantly reduced. Necrotic processes resulting from R. solani infection of sugar beet plants was followed by induction of plant phenolics metabolism; however, antioxidant capacity of these plants was reduced. 相似文献