Auswirkungen fortgesetzt glcicher Düngung auf den Boden     

Katharina Lenz 《Archives of Agronomy and Soil Science》2013,59(10):919-932

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Wheat blast caused by Magnaporthe oryzae pathovar Triticum is efficiently controlled by the plant defence inducer isotianil     

Portz  Katharina  Casanova  Florencia  Jordine  Angelina  Bohnert  Stefan  Mehl  Andreas  Portz  Daniela  Schaffrath  Ulrich 《植物病害和植物保护杂志》2021,128(1):249-259

Journal of Plant Diseases and Protection - Wheat blast caused by Magnaporthe oryzae pv. Triticum is an upcoming threat to wheat cultivation worldwide. The disease crossing over to wheat first...  相似文献   

Human impact on population structure and fruit production of the socio-economically important tree Lannea microcarpa in Burkina Faso     

Daniela H. Haarmeyer  Katharina Schumann  Markus Bernhardt-Römermann  Rüdiger Wittig  Adjima Thiombiano  Karen Hahn 《Agroforestry Systems》2013,87(6):1363-1375

Non-timber forest products (NTFPs) are of high socio-economic value for rural people in West Africa. Main factors determining the status of the populations of socio-economically important tree species providing those NTFPs are human activities. This study assesses the impact of human population density, land use, and NTFP-harvesting (pruning and debarking) on population structure and fruit production of the socio-economically important tree Lannea microcarpa that is normally conserved by farmers on fields. We compared L. microcarpa stands of protected sites with those of their surrounding communal sites in two differently populated areas in Burkina Faso. Our results reveal an opposed land use impact on the population structure of L. microcarpa in the two areas. In the highly populated area, the species population was more stable in the protected site than in the communal site, while the opposite was observed for the less populated area. Trees of the communal sites bore more fruits than trees of the protected sites. Debarking and pruning had a negative impact on fruit production of the species. We conclude that low intensity of human impact is beneficial for the species and that indirect human impact facilitates fruit production of L. microcarpa. In contrast, in the densely populated area, human impact has reached an intensity that negatively affects the populations of L. microcarpa. While the extent of protecting L. microcarpa on fields still seems to be enough to guarantee the persistence of this important species in the less populated area, it is no longer sufficient in the densely populated area.  相似文献   

CD27 expression discriminates porcine T helper cells with functionally distinct properties     

Katharina Reutner  Judith Leitner  Andrea Müllebner  Andrea Ladinig  Sabine E Essler  J Catharina Duvigneau  Mathias Ritzmann  Peter Steinberger  Armin Saalmüller  Wilhelm Gerner 《Veterinary research》2013,44(1):18

Differentiation of porcine T helper cells is still poorly investigated, partly due to a lack of monoclonal antibodies (mAbs) specific for molecules involved in this process. Recently, we identified a mAb specific for porcine CD27 and showed that CD27 is expressed by all naïve CD8α^- T helper cells but divides CD8α⁺ T helper cells into a CD27⁺ and a CD27^- subset. In the present study, detailed phenotypical and functional analyses of these T-helper cell subpopulations were performed. Naïve CD8α^-CD27⁺ T helper cells predominantly resided in various lymph nodes, whereas higher proportions of CD8α⁺CD27⁺ and CD8α⁺CD27^- T helper cells were found in blood, spleen and liver. Both CD8α⁺CD27⁺ and CD8α⁺CD27^- T helper cells were capable of producing IFN-γ upon in vitro polyclonal stimulation and antigen-specific restimulation. Experiments with sorted CD8α^-CD27⁺, CD8α⁺CD27⁺ and CD8α⁺CD27^- T-helper cell subsets following polyclonal stimulation revealed the lowest proliferative response but the highest ability for IFN-γ and TNF-α production in the CD8α⁺CD27^- subset. Therefore, these cells resembled terminally differentiated effector memory cells as described in human. This was supported by analyses of CCR7 and CD62L expression. CD8α⁺CD27^- T helper cells were mostly CCR7^- and had considerably reduced CD62L mRNA levels. In contrast, expression of both homing-receptors was increased on CD8α⁺CD27⁺ T helper cells, which also had a proliferation rate similar to naïve CD8α^-CD27⁺ T helper cells and showed intermediate levels of cytokine production. Therefore, similar to human, CD8α⁺CD27⁺ T helper cells displayed a phenotype and functional properties of central memory cells.  相似文献   

Food intake of European adolescents in the light of different food-based dietary guidelines: results of the HELENA (Healthy Lifestyle in Europe by Nutrition in Adolescence) Study     

Diethelm K  Jankovic N  Moreno LA  Huybrechts I  De Henauw S  De Vriendt T  González-Gross M  Leclercq C  Gottrand F  Gilbert CC  Dallongeville J  Cuenca-Garcia M  Manios Y  Kafatos A  Plada M  Kersting M;HELENA Study Group 《Public health nutrition》2012,15(3):386-398

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Combining isotopic signatures of n(Sr)/n(Sr) and light stable elements (C,N, O,S) with multi-elemental profiling for the authentication of provenance of European cereal samples     

Daniel Goitom Asfaha  Christophe R. Quétel  Freddy Thomas  Micha Horacek  Bernhard Wimmer  Gerhard Heiss  Christian Dekant  Peter Deters-Itzelsberger  Stefan Hoelzl  Susanne Rummel  Christophe Brach-Papa  Marleen Van Bocxstaele  Eric Jamin  Malcolm Baxter  Katharina Heinrich  Simon Kelly  Daniela Bertoldi  Luana Bontempo  Federica Camin  Roberto Larcher  Matteo Perini  Andreas Rossmann  Antje Schellenberg  Claus Schlicht  Heinz Froeschl  Jurian Hoogewerff  Henriette Ueckermann 《Journal of Cereal Science》2011

The aim of this work (from the FP6 project TRACE) was to develop methods based on the use of geochemical markers for the authentication of the geographical origin of cereal samples in Europe (cf. EC regulations 2081/92 and 1898/06). For the first time, the potential usefulness of combining n(⁸⁷Sr)/n(⁸⁶Sr) and δ¹³C, δ¹⁵N, δ¹⁸O and δ³⁴S isotopic signatures, alone or with key element concentrations ([Na], [K], [Ca], [Cu] and [Rb], progressively identified out of 31 sets of results), was investigated through multiple step multivariate statistics for more than 500 cereal samples collected over 2 years from 17 sampling sites across Europe representing an extensive range of geographical and environmental characteristics.  相似文献   

Penetrating metallic foreign bodies as a cause of peritonitis in 3 horses     

Lohmann KL  Lewis SR  Wobeser B  Allen AL 《The Canadian veterinary journal. La revue veterinaire canadienne》2010,51(12):1400-1404

Three cases of penetrating metallic foreign bodies causing peritonitis in horses are reported. These cases were presented with varying clinical complaints and duration of clinical signs. Entry of foreign bodies into the abdominal cavity through the skin and body wall is reported for the first time.  相似文献   

Excessive sulfate and poor water quality as a cause of sudden deaths and an outbreak of diarrhea in horses     

Brandy A. Burgess  Katharina L. Lohmann  Barry R. Blakley 《The Canadian veterinary journal. La revue veterinaire canadienne》2010,51(3):277-282

Sudden deaths and an outbreak of diarrhea in horses occurred in southern Saskatchewan in 2006. Five horses died while survivors presented with diarrhea and, in 1 case, acute neurologic signs attributed to hyponatremia. Diagnostic testing of affected horses and environmental testing suggested poor water quality, specifically high salinity and high sulfate concentration as the cause.  相似文献   

Hydrological and substrate requirements of the thick‐shelled river mussel Unio crassus (Philipsson 1788)          下载免费PDF全文

Katharina Stoeckl  Juergen Geist 《水产资源保护:海洋与淡水生态系统》2016,26(3):456-469

Synovial cyst of the fifth digit in a cat     

Katharina M. Hittmair  Irene Maedl  Martin Reifinger  Elisabeth Mayrhofer 《Journal of Feline Medicine and Surgery》2010,12(2):175-178

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