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Sökning: WFRF:(Sukenik A.)

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1.
  • Frenken, T., et al. (författare)
  • Integrating chytrid fungal parasites into plankton ecology: research gaps and needs
  • 2017
  • Ingår i: Environmental Microbiology. - : Wiley. - 1462-2912. ; 19:10, s. 3802-3822
  • Forskningsöversikt (refereegranskat)abstract
    • Chytridiomycota, often referred to as chytrids, can be virulent parasites with the potential to inflict mass mortalities on hosts, causing e.g. changes in phytoplankton size distributions and succession, and the delay or suppression of bloom events. Molecular environmental surveys have revealed an unexpectedly large diversity of chytrids across a wide range of aquatic ecosystems worldwide. As a result, scientific interest towards fungal parasites of phytoplankton has been gaining momentum in the past few years. Yet, we still know little about the ecology of chytrids, their life cycles, phylogeny, host specificity and range. Information on the contribution of chytrids to trophic interactions, as well as co-evolutionary feedbacks of fungal parasitism on host populations is also limited. This paper synthesizes ideas stressing the multifaceted biological relevance of phytoplankton chytridiomycosis, resulting from discussions among an international team of chytrid researchers. It presents our view on the most pressing research needs for promoting the integration of chytrid fungi into aquatic ecology.
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2.
  • Clark, M., et al. (författare)
  • Revealing the secrets of dormancy and of survival during desiccation
  • 2007
  • Ingår i: Comparative Biochemistry and Physiology a-Molecular & Integrative Physiology. - : Elsevier BV. - 1095-6433 .- 1531-4332. ; 146:4
  • Konferensbidrag (refereegranskat)abstract
    • Dormancy is a strategy used by many organisms to survive adverse conditions. We aim at enhancing our knowledge of dormancy so as to assess the feasibility of inducing cells or organisms into reversible dormant stages or survival during desiccating conditions. Genomic, proteomic and metabolomic tools used in the course of our studies aim at identifying the molecular and cellular processes that enable five model organisms to tolerate adverse conditions. These are: Cyanobacteria that have specialized dormant cells (akinetes) that tolerate unfavourable environmental conditions Baker's yeast that can survive long periods in a spore phase, that are characterized by desiccation and high levels of trehalose Rotifers that produce eggs (resting eggs) containing developmental-arrested embryos after sexual (but not asexual) reproduction Arctic springtails that reduce their body water content to avoid freezing while producing trehalose and becoming metabolically inactive Killifish embryos in eggs that show resistance to environmental desiccation conditions Our studies aim at revealing the mechanisms that establish dormancy and resistance to desiccation, those that allow the revival from dormant stages and the properties that make dormant stages stress-tolerant. The search for common denominators will assist in leading potentially useful strategies for artificial induction of dormancy and of cell preservation.
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