The Impact of Temperature on Host-Parasite Interactions and Metabolomic Profiles in the Marine Diatom .

Diatoms are single-celled photosynthetic eukaryotes responsible for CO fixation and primary production in aquatic ecosystems. The cosmopolitan marine diatom can form seasonal blooms in coastal areas and interact with various microorganisms, including the parasitic oomycete . This unicellular eukaryote is mainly present in the northern hemisphere as an obligate parasite of the genus Understanding the interplay of abiotic factors such as temperature and biotic factors like parasitism on algal physiology is crucial as it dictates plankton community composition and is especially relevant during environmental changes and warming events.

Submillisecond Electric Field Sensing with an Individual Rare-Earth Doped Ferroelectric Nanocrystal.

Understanding the dynamics of electrical signals within neuronal assemblies is crucial to unraveling complex brain functions. Despite recent advances in employing optically active nanostructures in transmembrane potential sensing, there remains room for improvement in terms of response time and sensitivity. Here, we report the development of such a nanosensor capable of detecting electric fields with a submillisecond response time at the single-particle level.

Bacteria modulate microalgal aging physiology through the induction of extracellular vesicle production to remove harmful metabolites.

The bloom and bust patterns of microalgae in aquatic systems contribute massively to global biogeochemical cycles. The decline of algal blooms is mainly caused by nutrient limitation resulting in cell death, the arrest of cell division and the aging of surviving cells. Nutrient intake can re-initiate proliferation, but the processes involved are poorly understood.

Ferroelectric Texture of Individual Barium Titanate Nanocrystals.

Ferroelectric materials display exotic polarization textures at the nanoscale that could be used to improve the energetic efficiency of electronic components. The vast majority of studies were conducted in two dimensions on thin films that can be further nanostructured, but very few studies address the situation of individual isolated nanocrystals (NCs) synthesized in solution, while such structures could have other fields of applications. In this work, we experimentally and theoretically studied the polarization texture of ferroelectric barium titanate (BaTiO, BTO) NCs attached to a conductive substrate and surrounded by air.