The Evolution and Status of Organic Principles in an International Perspective

The focus of OASE has been to conceptualise the evolution of organic agriculture and its relation to the social surroundings. In the efforts to trace and analyse relations between principles related to the organic way, the project has focused on Denmark but has also t ried to integrate international dimensions. The current paper is thus the result of an investigation carried out about evolution and interpretation of organic principles in IFOAM and parts of its constituency. The first section of the paper provides an overview of the IFOAM organisational history while the second section presents perceptions of IFOAM members on Basic Organic Principles

Organic Agriculture Movement at a Crossroad - a Comparative Study of Denmark and Japan

Along with apparent institutionalisation of organic agriculture that took place in the last couple of decades, the role of organic agriculture organisations as a social movement actor has increasingly being put into question. Under this circumstance, there can be observed an evidence of “division” among these organisations at being foe or ally to this trend of institutionalisation. Why have such competing trajectories existed in this social movement field? And how have different trajectories evolved throughout the time? Through a comparative study of two organisations related to organic agriculture in Denmark and Japan, it argues that a cause of the discrepancy can be found in fundamentally different formulations of the concepts of organic agriculture and the related movement, and thus different organisational fields in which the organisations have been embedded. It further attests that the process of external institutionalisation, punctuated typically by the establishment of the national organic law, has affected the internal institutionalisation of both organisations, regardless of its self-determined orientation toward pro- or anti- institutionalisation. Yet, how far or how fast the internal institutionalisation process will develop may still depend on the orientation of an organisation, when it potentially can preserve substantial autonomy from such process by refraining itself from creating business-client relationship with its own constituency and from compromising direct participation of its constituency to collective actions

Exploiting the allelopathic properties of agricultural crops in low-input cropping systems

The FATEALLCHEM project (5th framework programme) applied a holistic approach and used modern techniques in allelopathy research, concluded on the possibilities of exploiting allelopathic properties of wheat and rye and established a framework for future allelopathy research. An extract of the results of the FATEALLCHEM project will be presented, based on 18 recent papers, published in the Journal of Agricultural and Food Chemistry, 2006, vol 54 (available on the web of JAFC

The evolution of human influenza A viruses from 1999 to 2006: A complete genome study

<p>Abstract</p> <p>Background</p> <p>Knowledge about the complete genome constellation of seasonal influenza A viruses from different countries is valuable for monitoring and understanding of the evolution and migration of strains. Few complete genome sequences of influenza A viruses from Europe are publicly available at the present time and there have been few longitudinal genome studies of human influenza A viruses. We have studied the evolution of circulating human H3N2, H1N1 and H1N2 influenza A viruses from 1999 to 2006, we analysed 234 Danish human influenza A viruses and characterised 24 complete genomes.</p> <p>Results</p> <p>H3N2 was the prevalent strain in Denmark during the study period, but H1N1 dominated the 2000–2001 season. H1N2 viruses were first observed in Denmark in 2002–2003. After years of little genetic change in the H1N1 viruses the 2005–2006 season presented H1N1 of greater variability than before. This indicates that H1N1 viruses are evolving and that H1N1 soon is likely to be the prevalent strain again. Generally, the influenza A haemagglutinin (HA) of H3N2 viruses formed seasonal phylogenetic clusters. Different lineages co-circulating within the same season were also observed. The evolution has been stochastic, influenced by small "jumps" in genetic distance rather than constant drift, especially with the introduction of the Fujian-like viruses in 2002–2003. Also evolutionary stasis-periods were observed which might indicate well fit viruses. The evolution of H3N2 viruses have also been influenced by gene reassortments between lineages from different seasons. None of the influenza genes were influenced by strong positive selection pressure. The antigenic site B in H3N2 HA was the preferred site for genetic change during the study period probably because the site A has been masked by glycosylations. Substitutions at CTL-epitopes in the genes coding for the neuraminidase (NA), polymerase acidic protein (PA), matrix protein 1 (M1), non-structural protein 1 (NS1) and especially the nucleoprotein (NP) were observed. The N-linked glycosylation pattern varied during the study period and the H3N2 isolates from 2004 to 2006 were highly glycosylated with ten predicted sequons in HA, the highest amount of glycosylations observed in this study period.</p> <p>Conclusion</p> <p>The present study is the first to our knowledge to characterise the evolution of complete genomes of influenza A H3N2, H1N1 and H1N2 isolates from Europe over a time period of seven years from 1999 to 2006. More precise knowledge about the circulating strains may have implications for predicting the following season strains and thereby better matching the vaccine composition.</p

LC-MS/MS Quantification Reveals Ample Gut Uptake and Metabolization of Dietary Phytochemicals in Honey Bees (Apis mellifera)

The honey bee pollen/nectar diet is rich in bioactive phytochemicals and recent studies have demonstrated the potential of phytochemicals to influence honey bee disease resistance. To unravel the role of dietary phytochemicals in honey bee health it is essential to understand phytochemical uptake, bioavailability, and metabolism but presently limited knowledge exists. With this study we aim to build a knowledge foundation. For 5 days, we continuously fed honey bees on eight individual phytochemicals and measured the concentrations in whole and dissected bees by HPLC-MS/MS. Ample phytochemical metabolization was observed, and only 6-30% of the consumed quantities were recovered. Clear differences in metabolization rates were evident, with atropine, aucubin, and triptolide displaying significantly slower metabolism. Phytochemical gut uptake was also demonstrated, and oral bioavailability was 4-31%, with the highest percentages observed for amygdalin, triptolide, and aucubin. We conclude that differences in the chemical properties and structure impact phytochemical uptake and metabolism