Search results for "FUNGI"

Caso clínico: tumor glómico agresivo de localización lingual

2004

El tumor glómico es una neoplasia benigna que se origina en las células musculares lisas del glomus vascular. Los glomagiomas de cabeza y cuello son raros, con una incidencia del 0,6%. Presentamos un caso clínico de tumor glómico recidivante, localizado originalmente en la lengua, con un comportamiento clínico agresivo que complicó las opciones terapeuticas del caso. A glomus tumor or glomangioma is a benign neoplasm originating from the modified smooth muscle cells of the vascular glomus Glomangiomas of the head and/or neck are extremely rare, with an incidence of 0.6%. We present an observational case report of a recurrent glomic tumor originally located in the mobile tongue , with an agg…

Symbiotic status alters fungal eco‐evolutionary offspring trajectories

2023

Despite host-fungal symbiotic interactions being ubiquitous in all ecosystems, understanding how symbiosis has shaped the ecology and evolution of fungal spores that are involved in dispersal and colonization of their hosts has been ignored in life-history studies. We assembled a spore morphology database covering over 26,000 species of free-living to symbiotic fungi of plants, insects and humans and found more than eight orders of variation in spore size. Evolutionary transitions in symbiotic status correlated with shifts in spore size, but the strength of this effect varied widely among phyla. Symbiotic status explained more variation than climatic variables in the current distribution of…

Three rare lignicolous fungi from Sicily (S Italy)

2013

<em>Sarcodontia crocea</em> (Schwein.) Kotl., <em>Oligoporus mappa</em> (Overh. & Lowe) Gilbn. & Ryvarden and <em>Inonotus rickii</em> (Pat.) D.A. Reid. are reported for the first time from Sicily (southern Italy). Ecological and distributive features on the three relevant species are also here provided.

Blue-copper binding proteins of Medicago truncatula: Characterization of the expression of two genes related to the arbuscular mycorrhizal symbiosis

2009

International audience; Expression profiling of two paralogous arbuscular mycorrhizal (AM)-specific blue copper-binding gene (MtBcpla and MtBcp1b) isoforms was performed by real-time quantitative polymerase chain reaction in wild-type Medicago truncatula Jemalong 5 (J5) during the mycorrhizal development with Glomus intraradices for up to 7 weeks. Timecourse analysis in J5 showed that expression of both MtBcp1 genes increased continuously and correlated strongly with the colonization intensity and arbuscule content. MtPT4, selected as a reference gene of the functional plant-fungus association, showed a weaker correlation to mycorrhizal development. In a second experiment, a range of mycorr…

Vendace (Coregonus albula) Disperse Their Eggs Widely during Spawning

2021

Depending on their reproductive strategy, different fish species either aggregate or disperse eggs and larvae in their reproductive habitat. Because yolk-sac larvae of vendace (Coregonus albula) disperse widely across the littoral and pelagic zones of boreal lakes, it is unclear where the exact spawning and egg incubation locations are. Vendace egg and larvae densities were studied in Lake Southern Konnevesi to clarify its spawning strategy. In autumn 2019, 1–2 weeks prior to spawning, 500 egg samplers were installed in five depth zones in 20 sampling plots. Fertilized eggs were found in 18 plots. The mean density of eggs was 74 eggs m–2 and the mean fertilization rate 85%. During spawning,…

Developments in the evolutionary theory of social interactions

2016

Altruistic behaviour, which benefits others but harms the actor, can evolve when copies of the underlying genes are transmitted to future generations by related beneficiaries. While we know that the mechanism of ‘kin selection’ answers to how altruism can evolve, the answers to why and when it can evolve are still obscure. The first aim of this thesis is to shed light to the evolution of altruism by identifying factors that facilitate or promote it. I find that the conditions under which altruism can evolve follow surprisingly simple principles that are independent of the taxon-specific traits such as fecundity. Further, by analysing the unique aspects of haplodiploid sex determination syst…

GRZYBY WIELKOOWOCNIKOWE JAKO ŹRÓDŁO SUBSTANCJI BIOAKTYWNYCH

2020

From ancient times medicine and natural products have been closely linked through the use of traditional medicines and natural toxins. Macrofungi have an established history of use especially in traditional oriental medicine. Nowadays, mushrooms comprise a vast and yet largely untapped source of powerful new pharmaceutical products. In particular, and most importantly for modern medicine, they are an unlimited source of compounds that exhibit multidirectional activity: antioxidant, immuno-enhancing, immunostimulatory, antibacterial, antiviral, antiinflammatory, antidiabetic, antiallergenic and anticarcinogenic [1, 2, 5-8]. In the presented work, a substances with biological activity from ma…

Diuron mobility through vineyard soils contaminated with copper

2005

International audience; The herbicide diuron is frequently applied to vineyard soils in Burgundy, along with repeated treatments with Bordeaux mixture (a blend of copper sulfate and calcium hydroxide) that result in elevated copper concentrations. Cu could in principle affect the fate and transport of diuron or its metabolites in the soil either directly by complexation or indirectly by altering the populations or activity of microbes involved in their degradation. To assess the effect of high Cu concentrations on diuron transport, an experiment was designed with ten undisturbed columns of calcareous and acidic soils contaminated with 17–509 mg kg−1 total Cu (field-applied). Grass was plant…

Plant-soil interactions in cold climate

2013

Host filtering, not competitive exclusion, may be the main driver of arbuscular mycorrhizal fungal community assembly under high phosphorus

2023

A major goal in ecology is understanding the factors which determine the diversity and distribution of organisms. The outcome of the symbiotic relationship between plants and arbuscular mycorrhizal (AM) fungi is strongly influenced by soil phosphorus (P) availability. Despite this knowledge, there is still much to uncover about how soil P status can shape the taxonomic and phylogenetic assembly of root-colonising AM fungi. Additionally, there is a paucity of understanding about the implications of these changes for the outcome of the AM symbiosis in terms of plant growth, nutrient status and defence traits. We conducted a factorial pot experiment where sorghum (Sorghum bicolor) was grown un…