Allelopathic influence of usnic acid on Physcomitrium patens: A proteomics approach.

Allelopathy, the chemical interaction of plants by their secondary metabolites with surrounding organisms, profoundly influences their functional features. Lichens, symbiotic associations of fungi and algae and/or cyanobacteria, produce diverse secondary metabolites, among other usnic acid, which express to have potent biological activities. Mosses, i.

Length-mass relationships of pond macroinvertebrates do not hold between Southern and Northern Europe.

The lack of reliable data on length-mass relationships, essential to obtain accurate biomass estimates, limits our ability to easily assess secondary production by aquatic invertebrates. In the absence of published equations from similar habitat conditions, authors often borrow equations developed in geographic regions with different climate conditions, which may bias biomass estimates. A literature overview of published size-mass relationships for Portugal and Sweden highlights the need for further data within these biogeographic regions.

Integrative Taxonomy Reveals Freshwater Shrimp Diversity (Decapoda: Atyidae: ) from Kyushu and Southern Honshu of Japan, with a Discussion on Introduced Species.

Correct identification of species is crucial for invasion ecology and management, particularly in aquatic systems. In this study, specimens of the freshwater shrimp genus from Kyushu and southern Honshuof Japan were identified by using an integrative approach that combined DNA barcoding of mitochondrial cytochrome oxidase subunit I () and morphological examination. Among the eight species detected, two are native, viz.

Complete genome sequence of a marine bacterial strain.

is an abundant bacterial genera, found ubiquitously, including in extreme environments. Its broad metabolic capacity enables unique associations with various organisms. Using PacBio sequencing, we generated the complete genome sequence of a marine , revealing two circular chromosomes and one putative plasmid.

New species and records of the genus Hercostomus Loew (Diptera: Dolichopodidae) from Thailand mangroves, with notes on the Hercostomus fauna of Singapore mangroves.

The long-legged fly genus Hercostomus Loew, 1857 is reported for the first time from mangrove habitats in Thailand. Two new species, H. obtusus sp.

20 years of bibliometric data illustrates a lack of concordance between journal impact factor and fungal species discovery in systematic mycology.

Journal impact factors were devised to qualify and compare university library holdings but are frequently repurposed for use in ranking applications, research papers, and even individual applicants in mycology and beyond. The widely held assumption that mycological studies published in journals with high impact factors add more to systematic mycology than studies published in journals without high impact factors nevertheless lacks evidential underpinning. The present study uses the species hypothesis system of the UNITE database for molecular identification of fungi and other eukaryotes to trace the publication history and impact factor of sequences uncovering new fungal species hypotheses.

Antimony resistant bacteria isolated from Budúcnosť adit (Pezinok-Kolársky vrch deposit) in western Slovakia.

Potentially toxic elements (PTE), such as antimony (Sb), are dangerous putative contaminants for ground and surface waters around abandoned mines and ore deposits in Slovakia. Nearby mines antimony is commonly coprecipitated in ochre sediments precipitated from Fe-rich drainage waters and, therefore, these sites function as natural scavengers of this metalloid. Bacteria are well known to contribute to the process of redox state maintenance, biosorption and bioaccumulation of antimony and, consequently, to antimony precipitation or release from iron oxides complexes.

Silicon might mitigate nickel toxicity in maize roots via chelation, detoxification, and membrane transport.

Nickel is an essential micronutrient for plant growth and development. However, in excessive amounts caused by accidental pollution of soils, this heavy metal is toxic to plants. Although silicon is a non-essential nutrient, it accumulates in most monocots, particularly the vital crop maize (corn, Zea mays).

Comprehensive protocol for preparing diatom cell samples and associated bacterial consortia for scanning electron microscopy.

Meticulous sample preparation and strict adherence to preservation procedures are essential for electron microscopy investigations, which enable accurate capture of organisms' morphology, size, and potential interactions within the sample. Here, we present a protocol for preserving cells of the model diatom Phaeodactylum tricornutum and its native bacterial community. We describe steps for diatom fixation and coverslip preparation and washing.

Characterization of Ksg1 protein kinase-dependent phosphoproteome in the fission yeast S. pombe.

Ksg1 is an essential protein kinase of the fission yeast S. pombe that belongs to the AGC kinase family and is homologous to the mammalian PDPK1 kinase. Previous studies have shown that Ksg1 functions in the nutrient-sensing TOR signaling pathway and is involved in the phosphorylation and activation of other AGC kinases, thereby affecting various downstream targets related to metabolism, cell division, stress response, and gene expression.

Genome-Wide Data Uncover Cryptic Diversity With Multiple Reticulation Events in the Balkan-Anatolian Cardamine (Brassicaceae) Species Complex.

Plant species diversity may be considerably underestimated, especially in evolutionarily complex genera and in diversity hotspots that have enabled long-term species persistence and diversification, such as the Balkan Peninsula. Here, we address the topic of underexplored plant diversity and underlying evolutionary and biogeographic processes by investigating the hygrophytic mountain species complex of Cardamine acris s.l.

Multigene phylogenetics of Sargassum (Phaeophyceae) revealed low molecular diversity in contrast to high morphological variability in the NE Atlantic Ocean.

Sargassum species play a key role in habitat formation in tropical and subtropical regions; however, species identification has been hampered by the phenological plasticity exhibited in response to environmental conditions and life history. Molecular phylogenetics has challenged taxa circumscriptions and proven critical in delimiting species in this genus. Yet, the Atlantic species of Sargassum remain poorly understood, and recent studies have shown low molecular diversity between the species in the NW Atlantic.

Exhaustive stress causes a rapid immunological response in the humoral and cellular haemolymph compartments of the pale octopus (Octopus pallidus).

Cephalopods are economically and ecologically important species across the world, yet information linking physiological stress and associated immunological responses is limited in the current literature. Here, the effects of exhaustive exercise in a holobenthic octopus species, Octopus pallidus, were examined by evaluating immunological parameters. In whole haemolymph, the pH and refractive index were measured.

Differential spatio-temporal responses of Red Sea coral reef benthic communities to a mass bleaching event.

Understanding how coral reefs respond to disturbances is fundamental to assessing their resistance and resilience, particularly in the context of climate change. Due to the escalating frequency and intensity of coral bleaching events, it is essential to evaluate spatio-temporal responses of coral reef communities to disentangle the mechanisms underlying ecological changes. Here, we used benthic data collected from 59 reefs in the Red Sea over five years (2014-2019), a period that encompasses the 2015/2016 mass bleaching event.

Metabarcoding reveals ecologically distinct fungal assemblages in river and groundwater along an Austrian alpine to lowland gradient.

Biodiversity, the source of origin, and ecological roles of fungi in groundwater are to this day a largely neglected field in fungal and freshwater ecology. We used DNA-based Illumina high-throughput sequence analysis of both fungal gene markers 5.8S and internal transcribed spacers region 2 (ITS2), improving taxonomic classification.

The global loss of avian functional and phylogenetic diversity from anthropogenic extinctions.

Humans have been driving a global erosion of species richness for millennia, but the consequences of past extinctions for other dimensions of biodiversity-functional and phylogenetic diversity-are poorly understood. In this work, we show that, since the Late Pleistocene, the extinction of 610 bird species has caused a disproportionate loss of the global avian functional space along with ~3 billion years of unique evolutionary history. For island endemics, proportional losses have been even greater.

The biogeography of the Amazonian tree flora.

We describe the geographical variation in tree species composition across Amazonian forests and show how environmental conditions are associated with species turnover. Our analyses are based on 2023 forest inventory plots (1 ha) that provide abundance data for a total of 5188 tree species. Within-plot species composition reflected both local environmental conditions (especially soil nutrients and hydrology) and geographical regions.