52 research outputs found

    The epiphyllous habit in the hepatic genus Frullania

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    We report for the first time 11 species of Frullania growing as epiphylls in New Zealand, New Caledonia, and Colombia . Also listed are 29 Frullania species that have previously been recorded growing as epiphylls in other regions of the world. The highest diversity of Frullania epiphyllous species are in the floristic regions of New Zealand, New Caledonia, Macraonesia, and Madagascar. Frullania epiphylls range in altitude from sea-level to 2500m and can be categorised into facultative or accidental epiphylls. The number of Frullania species currently recorded growing as epiphylls will no doubt increase as more revisions of the genus in different floristic regions take place. This number may also increase if botanists were to explore leaf surfaces as a potential substrate for Frullania species, in addition to bark and rock habitats that have traditionally been described as microhabitats for the genus

    Fluorescence: A Novel Method for Determining Manuka Honey Floral Purity

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    Manuka honey, harvested from Leptospermum scoparium, is New Zealand\u27s most recognised honey type and commands a premium due to health‐related benefits. However, the plant\u27s distribution, relative to other species flowering simultaneously, allows honeybees to incorporate alternative nectars into the honey. Melissopalynological analysis in New Zealand is often unrepresentative due to the presence of many pollen‐bearing sources; consequently, alternative means of categorising manuka honey were examined. RP‐HPLC revealed that manuka honey contains distinct compounds, of which were relatively enriched and not present in the other New Zealand monofloral honeys. These main candidate compounds were isolated and have been described by mass spectrometry and nuclear magnetic resonance, synthesised to confirm structure, and as standards. These compounds, Leptosperin and Lepteridine, are a methyl syringate glycoside and pteridine derivative, respectively. Examination of these compounds revealed unique fluorescence signatures, this fluorescence could be detected in manuka honey samples the signal used to confirm that a honey was solely or predominantly consisted of L. scoparium nectar. Commercial manuka honeys were assessed by traditional analytical techniques, and comparisons were made with fluorescence signature; the fluorescence technique determined the authenticity of the honeys accurately

    Professionalism and the Millbank Tendency: The Political Sociology of New Labour's employees

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    This article analyses party employees, one of the most under-researched subjects in the study of British political parties. We draw on a blend of quantitative and qualitative data in order to shed light on the social and political profiles of Labour Party staff, and on the question of their professionalisation. The latter theme is developed through a model derived from the sociology of professions. While a relatively limited proportion of party employees conform to the pure ideal-type of professionalism, a considerably greater number manifest enough of the core characteristics of specialisation, commitment, mobility, autonomy and self-regulation to be reasonably described as 'professionals in pursuit of political outcomes'

    Long-term outcomes for adults with chronic granulomatous disease in the United Kingdom

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    Uncorrected CGD is associated with significant morbidity and mortality in adulthood, in particular due to inflammatory complications including life-limiting interstitial lung disease

    Effects of go/no-go training on food-related action tendencies, liking and choice

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    This is the final version. Available on open access from the Royal Society via the DOI in this recordData accessibility: All study data and analysis scripts are freely available on the Open Science Framework (https://osf.io/hz2nb/). The study protocol was preregistered prior to data collection at https://osf.io/wav8p. The data are provided in electronic supplementary material [86].Inhibitory control training effects on behaviour (e.g. 'healthier' food choices) can be driven by changes in affective evaluations of trained stimuli, and theoretical models indicate that changes in action tendencies may be a complementary mechanism. In this preregistered study, we investigated the effects of food-specific go/no-go training on action tendencies, liking and impulsive choices in healthy participants. In the training task, energy-dense foods were assigned to one of three conditions: 100% inhibition (no-go), 0% inhibition (go) or 50% inhibition (control). Automatic action tendencies and liking were measured pre- and post-training for each condition. We found that training did not lead to changes in approach bias towards trained foods (go and no-go relative to control), but we warrant caution in interpreting this finding as there are important limitations to consider for the employed approach-avoidance task. There was only anecdotal evidence for an effect on food liking, but there was evidence for contingency learning during training, and participants were on average less likely to choose a no-go food compared to a control food after training. We discuss these findings from both a methodological and theoretical standpoint and propose that the mechanisms of action behind training effects be investigated further.Economic and Social Research Council (ESRC)Biotechnology and Biological Sciences Research Council (BBSRC)European Research Council (ERC

    Heme Oxygenase Isoforms Differ in Their Subcellular Trafficking during Hypoxia and Are Differentially Modulated by Cytochrome P450 Reductase

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    Heme oxygenase (HO) degrades heme in concert with NADPH cytochrome P450 reductase (CPR) which donates electrons to the reaction. Earlier studies reveal the importance of the hydrophobic carboxy-terminus of HO-1 for anchorage to the endoplasmic reticulum (ER) which facilitates the interaction with CPR. In addition, HO-1 has been shown to undergo regulated intramembrane proteolysis of the carboxy-terminus during hypoxia and subsequent translocation to the nucleus. Translocated nuclear HO-1 was demonstrated to alter binding of transcription factors and to alter gene expression. Little is known about the homologous membrane anchor of the HO-2 isoform. The current work is the first systematic analysis in a eukaryotic system that demonstrates the crucial role of the membrane anchor of HO-2 for localization at the endoplasmic reticulum, oligomerization and interaction with CPR. We show that although the carboxy-terminal deletion mutant of HO-2 is found in the nucleus, translocation of HO-2 to the nucleus does not occur under conditions of hypoxia. Thus, we demonstrate that proteolytic regulation and nuclear translocation under hypoxic conditions is specific for HO-1. In addition we show for the first time that CPR prevents this translocation and promotes oligomerization of HO-1. Based on these findings, CPR may modulate gene expression via the amount of nuclear HO-1. This is of particular relevance as CPR is a highly polymorphic gene and deficiency syndromes of CPR have been described in humans

    Effect of Stress-Related Changes in Sheepmeat Ultimate pH on Cooked Odor and Flavor

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    The rapid evaporative ionisation mass spectrometry metabolite fingerprint of Leptospermum honey is strongly associated with geographic origin

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    There is debate about whether the honey from Leptospermum scoparium nectar in New Zealand is substantially different to honey from Leptospermum spp nectar from Australia; many Leptospermum honeys have high amounts of the antibacterial compound methylglyoxal (MGO) but are known to differ in their amounts of other metabolites. Retail honey samples labelled as ‘mānuka’, manuka, or ‘tea tree’ honey sourced from New Zealand (n = 34) and Australia (n = 35), were measured using laser assisted-rapid evaporative ionisation mass spectrometry (REIMS) in positive and negative ionisation modes, with 1637 and 1744 molecular features detected, respectively. Country of origin was strongly reflected in the REIMS fingerprints irrespective of similarity of methylglyoxal, with >50% of detected features differing between New Zealand and Australian-sourced honey. Combined REIMS features in negative ionisation mode correlated strongly with current molecular markers of mānuka honey quality (r2 > 0.9). Leptospermum honey from New Zealand and Australia have distinct molecular fingerprints, potentially due to evolutionary and genomic differences between the predominant Leptospermum species, bees, environment and honey processing

    Sexual arrangements in kohekohe (Dysoxlyum spectabile, Meliaceae)

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    Volume: 8Start Page: 315End Page: 32
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