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Search: WFRF:(Heinrich J) > Swedish University of Agricultural Sciences

  • Result 1-4 of 4
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2.
  • Klionsky, Daniel J., et al. (author)
  • Guidelines for the use and interpretation of assays for monitoring autophagy
  • 2012
  • In: Autophagy. - : Informa UK Limited. - 1554-8635 .- 1554-8627. ; 8:4, s. 445-544
  • Research review (peer-reviewed)abstract
    • In 2008 we published the first set of guidelines for standardizing research in autophagy. Since then, research on this topic has continued to accelerate, and many new scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Accordingly, it is important to update these guidelines for monitoring autophagy in different organisms. Various reviews have described the range of assays that have been used for this purpose. Nevertheless, there continues to be confusion regarding acceptable methods to measure autophagy, especially in multicellular eukaryotes. A key point that needs to be emphasized is that there is a difference between measurements that monitor the numbers or volume of autophagic elements (e.g., autophagosomes or autolysosomes) at any stage of the autophagic process vs. those that measure flux through the autophagy pathway (i.e., the complete process); thus, a block in macroautophagy that results in autophagosome accumulation needs to be differentiated from stimuli that result in increased autophagic activity, defined as increased autophagy induction coupled with increased delivery to, and degradation within, lysosomes (in most higher eukaryotes and some protists such as Dictyostelium) or the vacuole (in plants and fungi). In other words, it is especially important that investigators new to the field understand that the appearance of more autophagosomes does not necessarily equate with more autophagy. In fact, in many cases, autophagosomes accumulate because of a block in trafficking to lysosomes without a concomitant change in autophagosome biogenesis, whereas an increase in autolysosomes may reflect a reduction in degradative activity. Here, we present a set of guidelines for the selection and interpretation of methods for use by investigators who aim to examine macroautophagy and related processes, as well as for reviewers who need to provide realistic and reasonable critiques of papers that are focused on these processes. These guidelines are not meant to be a formulaic set of rules, because the appropriate assays depend in part on the question being asked and the system being used. In addition, we emphasize that no individual assay is guaranteed to be the most appropriate one in every situation, and we strongly recommend the use of multiple assays to monitor autophagy. In these guidelines, we consider these various methods of assessing autophagy and what information can, or cannot, be obtained from them. Finally, by discussing the merits and limits of particular autophagy assays, we hope to encourage technical innovation in the field.
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3.
  • Poyatos, R., et al. (author)
  • Global transpiration data from sap flow measurements: the SAPFLUXNET database
  • 2021
  • In: Earth System Science Data. - : Copernicus GmbH. - 1866-3508 .- 1866-3516. ; 13:6, s. 2607-2649
  • Journal article (peer-reviewed)abstract
    • Plant transpiration links physiological responses of vegetation to water supply and demand with hydrological, energy, and carbon budgets at the land-atmosphere interface. However, despite being the main land evaporative flux at the global scale, transpiration and its response to environmental drivers are currently not well constrained by observations. Here we introduce the first global compilation of whole-plant transpiration data from sap flow measurements (SAPFLUXNET, https://sapfluxnet.creaf.cat/, last access: 8 June 2021). We harmonized and quality-controlled individual datasets supplied by contributors worldwide in a semi-automatic data workflow implemented in the R programming language. Datasets include sub-daily time series of sap flow and hydrometeorological drivers for one or more growing seasons, as well as metadata on the stand characteristics, plant attributes, and technical details of the measurements. SAPFLUXNET contains 202 globally distributed datasets with sap flow time series for 2714 plants, mostly trees, of 174 species. SAPFLUXNET has a broad bioclimatic coverage, with woodland/shrubland and temperate forest biomes especially well represented (80 % of the datasets). The measurements cover a wide variety of stand structural characteristics and plant sizes. The datasets encompass the period between 1995 and 2018, with 50 % of the datasets being at least 3 years long. Accompanying radiation and vapour pressure deficit data are available for most of the datasets, while on-site soil water content is available for 56 % of the datasets. Many datasets contain data for species that make up 90 % or more of the total stand basal area, allowing the estimation of stand transpiration in diverse ecological settings. SAPFLUXNET adds to existing plant trait datasets, ecosystem flux networks, and remote sensing products to help increase our understanding of plant water use, plant responses to drought, and ecohydrological processes. SAPFLUXNET version 0.1.5 is freely available from the Zenodo repository (https://doi.org/10.5281/zenodo.3971689; Poyatos et al., 2020a). The "sapfluxnetr" R package - designed to access, visualize, and process SAPFLUXNET data - is available from CRAN.
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4.
  • Saab, Sally A., et al. (author)
  • The environment and species affect gut bacteria composition in laboratory co-cultured Anopheles gambiae and Aedes albopictus mosquitoes
  • 2020
  • In: Scientific Reports. - : NATURE PUBLISHING GROUP. - 2045-2322. ; 10:1
  • Journal article (peer-reviewed)abstract
    • The midgut microbiota of disease vectors plays a critical role in the successful transmission of human pathogens. The environment influences the microbiota composition; however, the relative mosquito-species contribution has not been rigorously disentangled from the environmental contribution to the microbiota structure. Also, the extent to which the microbiota of the adult sugar food source and larval water can predict that of the adult midgut and vice versa is not fully understood. To address these relationships, larvae and adults of Anopheles gambiae and Aedes albopictus were either reared separately or in a co-rearing system, whereby aquatic and adult stages of both species shared the larval water and sugar food source, respectively. Despite being reared under identical conditions, clear intra- and interspecies differences in midgut microbiota-composition were observed across seven cohorts, collected at different time points over a period of eight months. Fitting a linear model separately for each OTU in the mosquito midgut showed that two OTUs significantly differed between the midguts of the two mosquito species. We also show an effect for the sugar food source and larval water on the adult midgut microbiota. Our findings suggest that the mosquito midgut microbiota is highly dynamic and controlled by multiple factors.
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  • Result 1-4 of 4
Type of publication
journal article (3)
research review (1)
Type of content
peer-reviewed (4)
Author/Editor
Wang, Mei (2)
Kominami, Eiki (2)
Bonaldo, Paolo (2)
Minucci, Saverio (2)
De Milito, Angelo (2)
Kågedal, Katarina (2)
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Liu, Wei (2)
Clarke, Robert (2)
Kumar, Ashok (2)
Brest, Patrick (2)
Simon, Hans-Uwe (2)
Mograbi, Baharia (2)
Melino, Gerry (2)
Albert, Matthew L (2)
Lopez-Otin, Carlos (2)
Liu, Bo (2)
Ghavami, Saeid (2)
Harris, James (2)
Zhang, Hong (2)
Zorzano, Antonio (2)
Bozhkov, Peter (2)
Petersen, Morten (2)
Przyklenk, Karin (2)
Noda, Takeshi (2)
Zhao, Ying (2)
Kampinga, Harm H. (2)
Zhang, Lin (2)
Harris, Adrian L. (2)
Hill, Joseph A. (2)
Tannous, Bakhos A (2)
Segura-Aguilar, Juan (2)
Dikic, Ivan (2)
Kaminskyy, Vitaliy O ... (2)
Nishino, Ichizo (2)
Okamoto, Koji (2)
Olsson, Stefan (2)
Layfield, Robert (2)
Schorderet, Daniel F ... (2)
Hofman, Paul (2)
Lingor, Paul (2)
Xu, Liang (2)
Sood, Anil K (2)
Yue, Zhenyu (2)
Corbalan, Ramon (2)
Swanton, Charles (2)
Johansen, Terje (2)
Ray, Swapan K. (2)
Nguyen, Huu Phuc (2)
Adeli, Khosrow (2)
Chevet, Eric (2)
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University
University of Gothenburg (2)
Linköping University (2)
Karolinska Institutet (2)
Umeå University (1)
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Language
English (4)
Research subject (UKÄ/SCB)
Natural sciences (4)
Medical and Health Sciences (2)

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