Microscopy observations reveal a new glandular morphology in four Pinguicula L. species.

The adaxial leaf surface of butterworts (Pinguicula L.) presents specialized structures for carnivory, such as trichomes and sessile glands. The micromorphology of abaxial leaf surfaces has rarely been investigated; therefore, this study aimed to compare the micromorphology of adaxial and abaxial surfaces through electron scanning microscopy (SEM) and light microscopy (LM).

Far-red light photoacclimation in a desert strain with a reduced FaRLiP gene cluster and expression of its chlorophyll synthase in space-resistant isolates.

Introduction: Some cyanobacteria can use far-red light (FRL) to drive oxygenic photosynthesis, a phenomenon known as Far-Red Light Photoacclimation (FaRLiP). It can expand photosynthetically active radiation beyond the visible light (VL) range. Therefore, it holds promise for biotechnological applications and may prove useful for the future human exploration of outer space.

Synechococcus sp. PCC7335 responses to far-red enriched spectra and anoxic/microoxic atmospheres: Potential for astrobiotechnological applications.

Recently, cyanobacteria have gained attention in space exploration to support long-term crewed missions via Bioregenerative Life Support Systems. In this frame, cyanobacteria would provide biomass and profitable biomolecules through oxygenic photosynthesis, uptaking CO, and releasing breathable O. Their growth potential and organic matter production will depend on their ability to photoacclimate to different light intensities and spectra, maximizing incident light harvesting.

Microbial Polysaccharides Extracted from Different Mature Muds of the Euganean Thermal District Show Similar Anti-Inflammatory Activity In Vivo.

The Euganean Thermal District, situated in North-East Italy, is one of Europe's largest and oldest thermal centres. The topical application of its therapeutic thermal muds is recognised by the Italian Health System as a beneficial treatment for patients suffering from arthro-rheumatic diseases. Polysaccharides produced by the mud microbiota have been recently identified as anti-inflammatory bioactive molecules.

PLASTAMINATION: Outcomes on the Central Nervous System and Reproduction.

Background: Environmental exposures to non-biodegradable and biodegradable plastics are unavoidable. Microplastics (MPs) and nanoplastics (NPs) from the manufacturing of plastics (primary sources) and the degradation of plastic waste (secondary sources) can enter the food chain directly or indirectly and, passing biological barriers, could target both the brain and the gonads. Hence, the worldwide diffusion of environmental plastic contamination (PLASTAMINATION) in daily life may represent a possible and potentially serious risk to human health.

Transcriptomic and photosynthetic analyses of sp. PCC6803 and sp. PCC6912 exposed to an M-dwarf spectrum under an anoxic atmosphere.

Introduction: Cyanobacteria appeared in the anoxic Archean Earth, evolving for the first time oxygenic photosynthesis and deeply changing the atmosphere by introducing oxygen. Starting possibly from UV-protected environments, characterized by low visible and far-red enriched light spectra, cyanobacteria spread everywhere on Earth thanks to their adaptation capabilities in light harvesting. In the last decade, few cyanobacteria species which can acclimate to far-red light through Far-Red Light Photoacclimation (FaRLiP) have been isolated.

Growth and Photosynthetic Efficiency of Microalgae and Plants with Different Levels of Complexity Exposed to a Simulated M-Dwarf Starlight.

Oxygenic photosynthetic organisms (OPOs) are primary producers on Earth and generate surface and atmospheric biosignatures, making them ideal targets to search for life from remote on Earth-like exoplanets orbiting stars different from the Sun, such as M-dwarfs. These stars emit very low light in the visible and most light in the far-red, an issue for OPOs, which mostly utilize visible light to photosynthesize and grow. After successfully testing procaryotic OPOs (cyanobacteria) under a simulated M-dwarf star spectrum (M7, 365-850 nm) generated through a custom-made lamp, we tested several eukaryotic OPOs: microalgae (, , , ), a non-vascular plant (), and a vascular plant ().

Navigating gaps in practice: consensus recommendations for educational and support structures for emergency physicians returning from gaps in practice.

Objective: The purpose of this study was to identify the learning needs of emergency physicians returning to Emergency Medicine (EM) practice after clinical leaves of less than 2 years, summarize existing return to practice programs, and propose recommendations regarding ideal educational and support structures for these physicians both during their practice gaps and upon return to EM.

Methods: A multiple-phased study was conducted to establish recommendations regarding ideal educational and support structures for emergency physicians returning from practice gaps of less than 2 years. The overall design involved an initial environmental scan of existing and exemplar programs and regulatory body positions, followed by interviews with EM Department Heads from across Canada, and then subsequent content analysis and recommendation derivation by EM medical education expert group consensus.

Oral Palatability and Owners' Perception of the Effect of Increasing Amounts of Spirulina () in the Diet of a Cohort of Healthy Dogs and Cats.

The nutraceutical supplementation of Spirulina () in dogs and cats has not yet been investigated. The aim of this study was to evaluate if the dietary supplementation of increasing amounts of Spirulina for 6 weeks is palatable to pets and to assess the owner's perception of such supplementation. The owners of the 60 dogs and 30 cats that participated in this study were instructed to daily provide Spirulina tablets starting with a daily amount of 0.

Oxygenic photosynthetic responses of cyanobacteria exposed under an M-dwarf starlight simulator: Implications for exoplanet's habitability.

Introduction: The search for life on distant exoplanets is expected to rely on atmospheric biosignatures detection, such as oxygen of biological origin. However, it is not demonstrated how much oxygenic photosynthesis, which on Earth depends on visible light, could work under spectral conditions simulating exoplanets orbiting the Habitable Zone of M-dwarf stars, which have low light emission in the visible and high light emission in the far-red/near-infrared. By utilizing cyanobacteria, the first organisms to evolve oxygenic photosynthesis on our planet, and a starlight simulator capable of accurately reproducing the emission spectrum of an M-dwarf in the range 350-900 nm, we could answer this question.

Structure and function of bark and wood chloroplasts in a drought-tolerant tree (Fraxinus ornus L.).

Leaves are the most important photosynthetic organs in most woody plants, but chloroplasts are also found in organs optimized for other functions. However, the actual photosynthetic efficiency of these chloroplasts is still unclear. We analyzed bark and wood chloroplasts of Fraxinus ornus L.

In vivo anti-inflammatory and antioxidant effects of microbial polysaccharides extracted from Euganean therapeutic muds.

Therapeutic thermal mud produced by spas of the Euganean Thermal District (Italy) is used as a treatment for arthro-rheumatic diseases. Its production involves the growth of a specific microbiota embedded in a polysaccharidic matrix. Polysaccharides (Microbial-PolySaccharides, M-PS) released in the mud by the resident microorganisms were extracted and analyzed.

Acclimation of photosynthetic apparatus in the mesophilic red alga Dixoniella giordanoi.

Eukaryotic algae are photosynthetic organisms capable of exploiting sunlight to fix carbon dioxide into biomass with highly variable genetic and metabolic features. Information on algae metabolism from different species is inhomogeneous and, while green algae are, in general, more characterized, information on red algae is relatively scarce despite their relevant position in eukaryotic algae diversity. Within red algae, the best-known species are extremophiles or multicellular, while information on mesophilic unicellular organisms is still lacunose.

Super-Earths, M Dwarfs, and Photosynthetic Organisms: Habitability in the Lab.

In a few years, space telescopes will investigate our Galaxy to detect evidence of life, mainly by observing rocky planets. In the last decade, the observation of exoplanet atmospheres and the theoretical works on biosignature gasses have experienced a considerable acceleration. The most attractive feature of the realm of exoplanets is that 40% of M dwarfs host super-Earths with a minimum mass between 1 and 30 Earth masses, orbital periods shorter than 50 days, and radii between those of the Earth and Neptune (1-3.

Peek at the glass ceiling: gender distribution of leadership among emergency medicine residency programs.

Background: A gender gap in faculty rank at academic institutions exists; however, data among graduate medical education (GME) programmes are limited. There is a need to assess gender disparities in GME leadership, as a lack of female leadership may affect recruitment, role modelling and mentorship of female trainees. This cross-sectional study aimed to describe the current state of gender in programme leadership (department chair, programme director (PD), associate/assistant PD (APD) and clerkship director (CD)) at accredited Emergency Medicine (EM) programmes in the USA to determine whether a gender gap exists.

Rising prevalence of multiple sclerosis worldwide: Insights from the Atlas of MS, third edition.

Background: High-quality epidemiologic data worldwide are needed to improve our understanding of disease risk, support health policy to meet the diverse needs of people with multiple sclerosis (MS) and support advocacy efforts.

Objectives: The Atlas of MS is an open-source global compendium of data regarding the epidemiology of MS and the availability of resources for people with MS reported at country, regional and global levels.

Methods: Country representatives reported epidemiologic data and their sources via survey between September 2019 and March 2020, covering prevalence and incidence in males, females and children, and age and MS type at diagnosis.

Microbiota of the Therapeutic Euganean Thermal Muds with a Focus on the Main Cyanobacteria Species.

The Euganean Thermal District has been known since Roman times for the therapeutic properties of peloids, obtained from natural clays that have undergone a traditional maturation process. This leads to the growth of a green microbial biofilm with Cyanobacteria and the target species sp. ETS-05 as fundamental components for their ability to synthetize anti-inflammatory molecules.

WHIRLY2 plays a key role in mitochondria morphology, dynamics, and functionality in .

WHIRLY2 is a single-stranded DNA binding protein associated with mitochondrial nucleoids. In the mutant of , a major proportion of leaf mitochondria has an aberrant structure characterized by disorganized nucleoids, reduced abundance of cristae, and a low matrix density despite the fact that the macroscopic phenotype during vegetative growth is not different from wild type. These features coincide with an impairment of the functionality and dynamics of mitochondria that have been characterized in detail in wild-type and mutant cell cultures.

Anti-Inflammatory Activity of Exopolysaccharides from sp. ETS05, the Most Abundant Cyanobacterium of the Therapeutic Euganean Thermal Muds, Using the Zebrafish Model.

The Euganean Thermal District (Italy) represents the oldest and largest thermal center in Europe, and its therapeutic mud is considered a unique product whose beneficial effects have been documented since Ancient Roman times. Mud properties depend on the heat and electrolytes of the thermal water, as well as on the bioactive molecules produced by its biotic component, mainly represented by cyanobacteria. The investigation of the healing effects of compounds produced by the Euganean cyanobacteria represents an important goal for scientific validation of Euganean mud therapies and for the discovering of new health beneficial biomolecules.

A New Remote Sensing-Based System for the Monitoring and Analysis of Growth and Gas Exchange Rates of Photosynthetic Microorganisms Under Simulated Non-Terrestrial Conditions.

Oxygenic photosynthetic microorganisms are a focal point of research in the context of human space exploration. As part of the bioregenerative life-support systems, they could have a key role in the production of breathable O, edible biomasses and in the regeneration of CO rich-atmospheres and wastewaters produced by astronauts. The test of the organism's response to simulated physico-chemical parameters of planetary bodies could also provide important information about their habitability potential.

Harnessing the power of simulation for assessment: Consensus recommendations for the use of simulation-based assessment in emergency medicine.

Objectives: To address the increasing demand for the use of simulation for assessment, our objective was to review the literature pertaining to simulation-based assessment and develop a set of consensus-based expert-informed recommendations on the use of simulation-based assessment as presented at the 2019 Canadian Association of Emergency Physicians (CAEP) Academic Symposium on Education.

Methods: A panel of Emergency Medicine (EM) physicians from across Canada, with leadership roles in simulation and/or assessment, was formed to develop the recommendations. An initial scoping literature review was conducted to extract principles of simulation-based assessment.