To identify genes with similar expression profiles mathematical c

To identify genes with similar expression profiles mathematical clustering methods were used, with the resulting hierarchy displayed as dendrograms. 16s rRNA was used as an internal control. The use of an internal control was selleck chemical necessary as the number of genes expressed under different hormonal conditions varied substantially and no single gene was constitutively CH5183284 in vitro expressed. This method of normalization was particularly important in comparing samples grown in charcoal-stripped, hormone-free media to those in hormone-supplemented cultures. Microarray data accession number The entire microarray data recorded in Gene Expression Omnibus (GEO) database with accession number: GSE24119.

Results and discussion Whole transcriptome microarray data confirmed by qRT-PCR analyses We used a whole genome Affymetrix microarray approach to measure the transcriptional responses of C. trachomatis grown in ECC-1 cells supplemented with the female sex hormones, estradiol and progesterone. The resultant data was extracted and filtered through Affymetrix’s Gene Chip Operating System (GOCS) version 1.4, and processed using the MAS5 algorithm. Candidate 20s Proteasome activity lists of genes were further refined by selecting genes with a greater than 2-fold up/down-regulation and a p-value of <0.05. Replicate data sets were processed individually and

then cross-correlated with each other to find crotamiton statistically significant changes in gene expression. A total of 16 chlamydial arrays were analysed, with the four culture conditions

(no hormone, E, P, E+P), enabling us to have four replicates for each test condition. To confirm the accuracy and reliability of our microarray data, we chose 19 genes that were either up or down-regulated by microarray for analysis by quantitative RT-PCR (Table 1). For 17 of these 19 genes there was complete agreement between the microarray results and the qRT-PCR results. In all cases the fold changes measured by qRT-PCR were larger than those recorded using the microarray assay. For the two genes that were not consistent between the two methodologies, the microarray method gave a down-regulation of transcription whereas the qRT-PCR method showed no change in the transcriptional response. Table 1 Comparison of expression folds change obtained by microarray analysis with fold change obtained by qRT-PCR. Gene name Affymetrix fold change qRT-PCR fold change gseA 13.30 up 27.94 up nqr2 9.20 up 17.32 up ytgD 9.05 up 14.07 up ydaO 5.98 up 12.51 up pdhA 5.78 up 17.30 up recA 4.12 up 7.92 up lplA 2 3.89 up 7.41 up trpB 3.80 up 11.87 up incA 3.10 up 18.04 up fli1 2.25 up 6.80 up sdhB 22.53 Down 6.8 Down trxB 31.44 Down 5.19 Down pyrH 21.54 Down No change miaA 33.91 Down 11.74 Down cysS 19.09 Down 7.03 Down nrdA 30.06 Down 5.16 Down pbp3 33.53 Down 9.43 Down ychF 21.29 Down No change yggV 31.84 Down 12.11 Down Approximately 25% of the C.

fumigatus-P aeruginosa polymicrobial biofilm in cocultures Alth

fumigatus-P. aeruginosa polymicrobial biofilm in cocultures. Although this website the 96-well cell culture plate would give a large number of replications for antimicrobial susceptibility studies, the wells in 96-well cell culture plates were found to be too small to prevent cross-contamination between wells by the surface growth of A. fumigatus. In contrast, the 6-well and 12-well cell culture plates were found to be too big and comparatively large volumes of medium were needed for the development of biofilms and provided limited number of replications for drug susceptibility studies. In our experience, Costar 24-well

cell culture plates were ideal for the development of in vitro monomicrobial and polymicrobial biofilms of A. fumigatus and P. aeruginosa and provided sufficient number of wells for replications. The large deep wells were adequately separated for multiple manipulations of the biofilm without cross-contamination between wells. In SD broth the 24-h and 48-h mixed microbial cultures of A. fumigatus and P. aeruginosa produced polymicrobial biofilms at 35°C. Although the biofilm mass was significantly higher in 48 h biofilm, there was no significant difference for the CFU values obtained for the

24-h and 48-h cocultures. Therefore, we would suggest that 24 h growth of the mixed microbial culture will be sufficient to produce a functional A. fumigatus-P. aeruginosa polymicrobial biofilm for antimicrobial drug susceptibility studies. The tetrazolium reduction assay has been used by several investigators in the past to examine the viability of a variety of eukaryotic JQEZ5 cells ranging from mammalian to fungal cells,

including members of the genus Aspergillus[48, 67–71]. Therefore, we investigated the feasibility of using methyltetrazolium (MTT) assay for monitoring the viability of A. fumigatus cells after coculturing with P. aeruginosa in mixed microbial biofilms. The MTT assay has been used in our laboratory [68] previously, found to be convenient and www.selleckchem.com/products/cobimetinib-gdc-0973-rg7420.html highly sensitive for monitoring the viability of A. fumigatus cells, in particular after exposure to antifungal drugs. Similarly, we found in the current series of experiments that the MTT assay was very useful for monitoring the viability of A. fumigatus cells Janus kinase (JAK) in monospecies cultures after 24 h and 48 h growth. However, in the mixed species cultures where A. fumigatus and P. aeruginosa were grown together in cocultures although the assay was highly sensitive and easy to perform, it was found to be difficult to distinguish the contribution made by the bacterial and fungal cells towards the reduction of the MTT compound. Therefore, we used only the CFU assay to monitor the growth of A. fumigatus cells in mixed microbial biofilms and for drug susceptibility studies. Apart from the inconvenience, the main disadvantages of using the CFU assay for determining the viability of A.

rpoB gene sequence

rpoB gene sequence IWP-2 analysis for genomic species identification

was performed as previously described [3]. PCR analyses The conservation of specific GEIs in a set of A. baumannii strains was assessed by PCR amplification. PCR reactions were carried out by incubating 20 ng of genomic DNA with 160 ng of each primer in the presence of dXTPs (200 nanomoles), 1.5 mM magnesium chloride and the Taq DNA polymerase Recombinant (Invitrogen). The sequences of the oligomers used as primers, the experimental conditions, the length of the amplimers, the coding regions amplified are all Go6983 solubility dmso listed in Additional file 8. PCR products were electrophoresed on 1.5-2% agarose gels in 0.5×TBE buffer (45 mM Tris pH 8, 45 mM Borate, 0.5 mM EDTA) at 120 V (constant voltage). The 100 bp ladder (Promega) was used as molecular weight marker. The co-linearity of contigs and the DNA content of the corresponding chromosomal regions were assessed by sequencing PCR products bridging contig ends. Acknowledgements We thank all colleagues who generously

provided strains included in the study: Antonella Agodi, Matteo Bassetti, Susanna Cuccurullo, Ziad Daoud, Athanassios Tsakris, and Haluk Vahaboglu. This work was supported in part by grants from Agenzia Italiana del Farmaco, Italy (AIFA2007 contract no. FARM7X9F8K) and from Ministero dell’Istruzione, dell’Universita’e della Ricerca, Italy (PRIN 2008 to RZ, PRIN 2009 to PPDN). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Electronic supplementary AZD6738 mw material Additional Adenosine triphosphate file 1: Structures of plasmids identified in ST2 3990, ST25 4190 and ST78 3909 strains. the figure shows the circular maps of plasmids p1ABST2, p2ABST2, p1ABST25, p2ABST25 and p1ABST78 with relevant features. ORFs and direction of the transcription are represented by arrow-shaped boxes. Plasmid sizes and names of various features are reported. (PDF 427 KB) Additional file 2: Coding capacity of plasmids carried by strains 3909 3990 and 4190. the table lists ORFs of plasmids p1ABST2, p2ABST2, p1ABST25, p2ABST25 and p1ABST78. Position, number of amino acids and putative function are reported for

each ORF. (XLS 36 KB) Additional file 3: Target site duplications. sequences duplicated at the ends of GEIs upon genome integration are listed in the table. Base changes in left and right TSDs are marked according to IUB codes. Residues missing in one TSD are in parenthesis. Known target genes are indicated. (XLS 116 KB) Additional file 4: GEIs organization and ORFs content. the 63 sheets of the EXCEL file correspond to the 63 genomic loci carrying GEIs shown in Figure 2. The ORF number, the amino acid length and the hypothesized function are given in each sheet. For draft genomes, the corresponding contigs are indicated. Identical or closely related ORFs present in different GEIs are positioned in the same row and labelled by the same colour to facilitate view.

Primer pairs were designed

Primer pairs were designed TPCA-1 chemical structure to target these genes and PCR were performed. Analyzing the PCR products, we excluded primer pairs that could generate false-positive results in strains belonging to other serogroups and selected primer pairs that could discriminate as many strains belonging to the serogroups to be tested as possible. The primer pairs listed in Table 1 were our final selections. As shown in Fig. 1, DNA from strains belonging to the corresponding serogroups were able to produce PCR products of the expected size, but

no PCR products were obtained

from strains belonging to all other serogroups. The results of 75 reference strains are listed in additional file 1 Table S1. We also tested the specificity of six primer pairs using 40 clinically isolated strains; the results are listed in additional file 2 Table S2. All strains belonging to the six serogroups gave PCR products of the expected size with the exception of four reference strains (M49, H18, 34 and A81) belonging to the serogroup Sejroe. We speculate that the O-antigen gene clusters of these strains have been undertaken a process of recombination, where target genes may lose through recombination events. Since a few sequences of O-antigen this website gene clusters from

Leptospira are available, only six serogroups of strains have been discriminated so far. There are also six strains cannot be discriminated by both MAT and Selleck MK-8931 O-genotyping in clinical isolates. We proposed that they are from other serogroups which beyond the field we can characterize. Figure 1 Analysis of amplification products by electrophoresis. Bcl-w Amplification products obtained by PCR of DNA pools from 18 serogroups belonging to Leptospira and DNA of two non-Leptospira strains using primer pairs ict-F/R (a), can-F/R (b), aut-F/R (c), gri-F/R (d). heb-F/R (e), sej-F/R (f). 1: Icterohaemorrhagiae; 2: Javanica; 3: Canicola; 4: Ballum; 5: Pyrogenes; 6: Autumnalis; 7: Australis; 8: Pomona; 9: Grippotyphosa; 10: Hebdomadis; 11: Bataviae; 12: Tarassovi; 13: Manhao; 14: Sejroe; 15: Mini; 16: Celledoni; 17: Ranarum; 18: Sarmin; 19: S. enteritidis H9812; 20: S. aureus N315; M: DNA marker, bands with lengths of 10 kb, 8 kb, 5 kb, 2 kb 1000 bp, 700 bp, 500 bp, 400 bp, 300 bp, 200 bp and 100 bp, respectively.

Effect of reaction temperature The temperature of the hydrotherma

Effect of reaction temperature The temperature of the hydrothermal reaction affected greatly not only the reaction (going or not) but Cilengitide research buy also the reaction rate (slow or fast). Additional file 1: selleck kinase inhibitor Figure S1 shows the TEM images of the as-prepared

samples at different reaction temperatures. No hollow-structure products appeared if the temperature T < 230°C in our experiments. The morphology and size of nanocrystals became difficult to control when the temperature was up to 260°C or higher because the higher the temperature was, the faster the reaction rate was. When T = 255°C, the quality of the obtained SiO2 · Re2O3 HSs was always poor. The experiments verify that the moderate temperature was 250°C. Effect of Re3+ ion and its concentration It was reported that Na2SO4 and NaCl were advantageous to HSS formation [52] and the work matter was Na+ cation, which was in line with our experimental data. Hereby, we investigated the synthesis of HSSs under different rare-earth ions and bivalent cations. In order to get uniform hollow structures, the optimal concentration of the rare-earth ions was usually kept in the range of 0.04 KU55933 to 0.08 mol/L. The experimental data and TEM images are depicted in Additional file 1: Table S1 and

Figure S2. The concentration less than 0.03 mol/L resulted in poor quality in production, and the concentration greater than 0.08 mol/L always led to products with not all having a hollow structure. The experiments showed that the lower or higher concentration of Re3+ ions was not good for HSS formation and 0.06 mol/L was the optimal concentration. Although the SiO2 · Re2O3 HSs were obtained based on the rare-earth ion assistance strategy, their 4��8C quality was quite different under assistance of different kinds of rare-earth ions. By keeping other reaction conditions unchanged such as the pH value of the solution, reaction time, and

reaction temperature, the influence of different Re3+ ions (Re = Y, Eu, La, Sm, Tb, Pr) on the structure of the as-prepared products was investigated (see Additional file 1: Table S2 and Figure S4). Additional file 1: Figure S4 clearly shows that the influence sequence of Re3+ was as follows: Eu3 + ≈ Sm3 + > Y3 + > Pr3 + ≈ La3 + > Tb3 +. Nearly all of the as-prepared samples were hollow spheres with good quality under the effect of Eu3+ and Sm3+ existence, and the experiments showed good reproducibility and satisfactory results. With Y3+, Pr3+, and La3+ ions included, all of the products always formed a mixture of HSSs and core/shell structure. Furthermore, all of the samples can be formed into a hollow sphere if the reaction time is prolonged, but the yield of HSSs was lower. Only a small amount of HSs could be obtained with Tb3+ existence. The experiments indicated that changing the reaction time did not work.

Lancet 371:1505–1512PubMedCrossRef 34 Styrkarsdottir U, Halldors

Lancet 371:1505–1512PubMedCrossRef 34. Styrkarsdottir U, Halldorsson BV, Gretarsdottir S, Gudbjartsson DF, Walters GB, Ingvarsson T, Jonsdottir T, Saemundsdottir J, Center JR, Nguyen TV, Bagger Y, Gulcher JR, Eisman JA, PF-04929113 research buy Christiansen C, Sigurdsson G, Kong A, Thorsteinsdottir U, Stefansson K (2008) Multiple genetic loci for bone mineral density and fractures. N Engl J Med 358:2355–2365PubMedCrossRef 35. Styrkarsdottir U, Halldorsson BV, Gretarsdottir S, Gudbjartsson DF, Walters GB, Ingvarsson T, Jonsdottir T, Saemundsdottir J, Snorradottir S,

Center JR, Nguyen TV, Alexandersen P, Gulcher JR, Eisman JA, Christiansen C, Sigurdsson G, Kong A, Thorsteinsdottir U, Stefansson K (2009) New sequence variants associated with bone mineral

density. Nat Genet 41:15–17PubMedCrossRef MK-4827 order 36. Abecasis GR, Cookson WO, Cardon LR (2001) The power to detect linkage disequilibrium with quantitative traits in selected samples. Am J Hum Genet 68:1463–1474PubMedCrossRef 37. Purcell S, Cherny SS, Sham PC (2003) Genetic Power Calculator: design of linkage and association genetic mapping studies of complex traits. Bioinformatics 19:149–150PubMedCrossRef”
“Introduction Minodronate is a nitrogen-containing bisphosphonate with a potent inhibitory effect on bone resorption. In a head-to-head comparison of the effects of minodronate with alendronate in postmenopausal osteoporosis patients, daily 1 mg minodronate resulted in similar increases in lumbar spine (LS) and total hip bone mineral density (BMD) after 12 months with similar safety profiles

[1]. A randomized placebo-controlled trial conducted in Japan revealed that daily 1 mg minodronate reduced vertebral fractures by 59% in postmenopausal women with established ever osteoporosis [2]. Daily 1 mg minodronate has been approved to treat involutional osteoporosis in Japan. Most oral bisphosphonates originally developed as a daily regimen have been shown to have equivalent efficacy with weekly and/or monthly regimens [3–7]. Since less frequent dosing, preferred by most patients, could result in LY2874455 concentration better treatment compliance with better outcomes [8], we conducted a study to determine if minodronate could be administered as a monthly regimen. The present randomized, double-blind, active-controlled 1-year study was undertaken to determine whether or not once monthly oral minodronate at doses of 30 and 50 mg provides similar efficacy and safety as the 1-mg daily regimen in patients with involutional osteoporosis.

Identification and exclusion of susceptible workers seem to be in

Identification and exclusion of susceptible workers seem to be inefficient, particularly when the marker of susceptibility (e.g., atopy) is PRN1371 datasheet prevalent in the general population. Such surveillance

programs aimed at early identification may help to initiate suitable protective strategies such as use of a breathing mask or similar technical equipment (e.g., allergen-proof working clothes) for all tasks. The type of breathing mask should be selected according to the individual working Selleck Stattic environment. This could help minimize the contact of the airways and the skin with the allergens, especially in individuals with known atopic predisposition. In summary, our experiments are the first to present test results of a self-prepared cattle allergen mix that was designed to represent the full spectrum of cattle allergens present in a typical agricultural workplace. Additional tests with self-made cattle hair extracts can help to bridge the diagnostic gap seen in patients showing cattle-related symptoms, but negative results in tests using commercially available extracts. A suitable prevention strategy to identify the population at risk of cattle allergy could include screening for

sensitizations against ubiquitous allergens, which we found in the samples AZD1390 mouse of almost all cattle-sensitized claw trimmers. In selected groups, e.g., when screening for sensitizations at an early old stage, we propose to choose a lower cutoff level of 0.2 kU/l with commercially available allergen extracts. Acknowledgments We are grateful for all the support that we received in the course of our study. We would like to thank in particular Dietrich Landmann (Echem, Germany) and the claw trimmer unions, Anke Seeckts, Petra Tucholla and Bianca Rohland (Göttingen, Germany) for technical support in immunoblotting. Conflict of interest The authors declare

that they have no conflict of interest. Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. References Danuser B, Weber C, Künzli N, Schindler C, Nowak D (2001) Respiratory symptoms in Swiss farmers: an epidemiological study of risk factors. Am J Ind Med 39(4):410–418CrossRef Fuchs E, Gronemeyer W, Bandilla K (1981) Reibtest und Tierhaarallergie, zugleich ein klinischer Beitrag zum Problem der „Rassespezifität“. Allergologie 4:241–248 Greskevitch M, Kullman G, Bang KM, Mazurek JM (2007) Respiratory disease in agricultural workers: mortality and morbidity statistics. J Agromed 12(3):5–10CrossRef Heutelbeck AR, Janicke N, Hilgers R, Kütting B, Drexler H, Hallier E, Bickeböller H (2007) German cattle allergy study (CAS): public health relevance of cattle-allergic farmers.

These findings were confirmed by DiOC6(3) staining, and the speci

These findings were confirmed by DiOC6(3) staining, and the specificity for mitochondria was verified using confocal microscopy (data not shown). The loss of δΦm in both phenotypes after selenite treatment agrees well with earlier studies [15, 19, 36]. Table 2 Selenite-induced

loss of mitochondrial membrane potential and effects of inhibition of Baf-A1 clinical trial apoptosis signalling enzymes   Epithelioid cells Sarcomatoid cells Inhibitor Loss of δΦ m after selenite treatment a Statistical significance vs. no selenite b Statistical significance vs. selenite only c Loss of δΦ m after selenite treatment a Statistical significance vs. no selenite b Statistical significance vs. selenite only c Positive control 2.89 (± 0.68)     1.28 (± 0.18)     Selenite 3.41 (± 0.57) p < 0.01   3.30 (± 0.24) p < 0.001   JNK 0,94 (± 0.06) www.selleckchem.com/products/VX-680(MK-0457).html     1.05 (± 0.05)     JNK + selenite 3,96 (± 0.58) p < 0.001 ns 3.74 (± 0.25) p < 0.001 ns p38 0.99 (± 0.04)     0.88 (± 0.03)     p38 + selenite learn more 4.06 (± 0.63) p < 0.001 ns 4.15 (± 0.52) p < 0.001 ns p53 0.74 (± 0.05)     0.92 (± 0.03)     p53 + selenite 2.62 (± 0.57) p < 0.05 ns 3.59 (± 0.52) p < 0.001 ns Cathepsin B 1.27 (± 0.12)     1.46 (± 0.10)     Cathepsin B + selenite 5.68 (± 0.70) p < 0.001 ns 6.27 (± 0.75) p < 0.001 p < 0.01

Cathepsin D, E 0.93 (± 0.06)     0.90 (± 0.03)     Cathepsin D, E + selenite 3.95 (± 0.77) p < 0.001 ns 3.45 (± 0.37) p < 0.001 ns a: Fold change in JC-1 green fluorescence. Range shows the standard error of the mean (SEM). b: One-way ANOVA analyses were performed with Bonferroni's multiple comparisons test. c: One-way ANOVA analyses were performed with Dunnett's post test. ns = not significant. To further delineate the role of signalling molecules

among the MAP kinases and cathepsins, chemical inhibitors against these enzymes medroxyprogesterone were used (Table 1). In the untreated epithelioid cells, the inhibitors decreased the baseline apoptotic fraction by 20–50% [see Additional file 1]. This demonstrates the efficacy of the inhibitors at the concentrations in which they were used. None of the enzyme inhibitors affected the proportion of viable cells during Annexin-PI apoptosis assays, although the WST-1 viability assays indicated a modest growth inhibitory effect of CA 074-Me and SB 203580 (data not shown). Further controls to verify the efficacy of the chemical inhibitors were obtained by testing them on Jurkat cells over a 25 h time course following apoptosis induction with 0,2 μM staurosporine. The inhibitors of JNK, p53 and cathepsin D and E successfully decreased the apoptosis induction, whereas the cathepsin B inhibitor increased it [see Additional file 2]. p38 inhibition reduced apoptosis frequency slightly in sarcomatoid cells In the sarcomatoid cells, the p38 inhibitor SB203580 caused a small decrease in the apoptotic response to selenite (Figure 1D). In the epithelioid cells, p38 inhibition had no effect on the ability of selenite to induce apoptosis.

Nat Nanotechnol 2012, 7:465–471 10 1038/nnano 2012 71CrossRef 4

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from a ZnO rod homojunction light-emitting diode. Appl Phys Lett 2009, 95:133124. 10.1063/1.Selleckchem Sapitinib 3243453CrossRef mTOR inhibitor 6. Xiang B, Wang P, Zhang X, Dayeh SA, Aplin DPR, Soci C, Yu D, Wang D: Rational synthesis of p-type zinc oxide nanowire arrays using simple chemical vapor deposition. Nano Lett 2007, 7:323–328.

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12. Zhang L, Li Q, Shang L, Zhang Z, Huang R, Zhao F: Electroluminescence from n-ZnO:Ga/p-GaN heterojunction isothipendyl light-emitting diodes with different interfacial layers. J Phys D Appl Phys 2012, 45:485103. 10.1088/0022-3727/45/48/485103CrossRef 13. Chen C-H, Chang S-J, Chang S-P, Li M-J, Chen I-C, Hsueh T-J, Hsu C-L: Electroluminescence from n-ZnO nanowires/p-GaN heterostructure light-emitting diodes. Appl Phys Lett 2009, 95:223101. 10.1063/1.3263720CrossRef 14. Jeong M-C, Oh B-Y, Ham M-H, Lee S-W, Myoung J-M: ZnO-nanowire-inserted GaN/ZnO heterojunction light-emitting diodes. Small 2007, 3:568–572. 10.1002/smll.200600479CrossRef 15. Zhang X-M, Lu M-Y, Zhang Y, Chen L-J, Wang ZL: Fabrication of a high-brightness blue-light-emitting diode using a ZnO-nanowire array grown on p-GaN thin film. Adv Mater 2009, 21:2767–2770. 10.1002/adma.200802686CrossRef 16. Xu S, Xu C, Liu Y, Hu Y, Yang R, Yang Q, Ryou J-H, Kim HJ, Lochner Z, Choi S, Dupuis R, Wang ZL: Ordered nanowire array blue/near-UV light emitting diodes. Adv Mater 2010, 22:4749–4753. 10.1002/adma.201002134CrossRef 17. Lupan O, Pauporté T, Viana B: Low-voltage UV-electroluminescence from ZnO-nanowire array/p-GaN light-emitting diodes. Adv Mater 2010, 22:3298–3302. 10.

2009; Collen et al 2012) These processes are less severe in reg

2009; Collen et al. 2012). These processes are less severe in regions with low-intensity farming systems; conservation initiatives implemented in low-intensity farmlands are therefore particularly desirable, successful and cost-effective (Kleijn et al. 2009). At a local scale, non-arable semi-natural lands are recognized biodiversity hotspots, standing in dramatic

contrast with species-poor, homogenous “crop-seas”. They may also be local centers of endangered species, but this aspect has been little studied (Zechmeister and Moser 2001; Diekötter et al. 2006). In many regions, field www.selleckchem.com/products/rg-7112.html margins are the most common form of semi-natural habitat, having many https://www.selleckchem.com/products/azd1390.html agronomic, environmental, recreational and wildlife functions (reviewed by Marshall et al. (2002)). For example, margins increase species richness, functional group diversity and the abundance of many taxa by providing seed banks, breeding and sheltering sites and food resources, practically unavailable in the adjoining cropland. On a landscape this website level margins provide linkages between habitats, maintain landscape diversity, harbor organisms of economic interest for farmers, such as pollinators and predators of pests, and have positive

aesthetic effects (Jacot et al. 2006; Herzon and O’Hara 2007; Vickery et al. 2009; Morelli 2013). However, boundary structures are also subject to strong agricultural pressure, and support mostly disturbance-tolerant generalist species (Liira et al. 2008). The occurrence of species of conservation interest in field margins is poorly understood.

Specifically, no studies examining the numbers and distribution of threatened taxa in field margins have to our knowledge been conducted in central and eastern Europe. This is a notable gap, since this part of Europe, including Poland, is a large continental center where traditional landscape structures have survived (Palang et al. 2006; Batáry et al. 2007; Herzon and Helenius 2008; Sklenicka et al. 2009). With its large area (312,679 km2) and with regions of extensively Dapagliflozin managed farmland, Poland plays an important role in the preservation of European biodiversity. Butler et al. (2010) assessed that land-use and -management changes in Poland have had the second-largest (after Spain) impact on European farmland bird populations among all EU Member States. The high degree of biological diversity, due primarily to the surviving variety of linear features (Sanderson et al. 2009; Kędziora et al. 2012), has facilitated studies of occurrence patterns of threatened taxa and recommendations for wider conservation practice. A variety of environmental factors are likely to affect the occurrence of threatened species in field margins, the structure of tall vegetation being particularly important.