Search results for "Flora"
showing 10 items of 989 documents
Discovery of a second locality for the narrow endemic Anthemis ismelia (Asteraceae) in NW Sicily
2017
A new population of Anthemis ismelia (Asteraceae) has been discovered on Mt Pecoraro (Cinisi, NW Sicily), a limestone headland at about 14 km from Mt Gallo (Palermo), the locus classicus et unicus of this species described in 1884. Taxonomic framework, distribution update, habitat characterisation, ecology and phytosociological framework are provided, as well as meta-population numerical estimates and risk status assessment.
Osservazioni sulla flora pteridologica della Sicilia
2011
Biogeographia vol. XXX - 2071 (Pubblicato il 23 dicembre 2011) La Biogeografia della Sici/ia Osservazioni sulla flora pteridologica della Sicilia ANGELO TROIA, VTNCENZO ILARDI, FRANCESCO MARIA RAIMONDO Universita di Palermo - Dz'partz'mem.‘0 a’z' Biologia Ambientale e Biodiversita, via Arckirafi 38, I—90]23 Palermo (Italy); e—mail: ange[0.tr0z'a @[z'ber0.z'2f Key words: flora, pteridophytes, Lycopodiophyta, Monilophyta, ferns, Sicily SUMMARY An updated checll—list of Sicilian pteridophytes is presented: in total, there are 55 taxa, including 49 ferns in the strict sense (“monilophytes”) and 6 lycopodiophytes. Aspleniaceae is the most represented family in terms of speci…
Taxa relitti della flora forestale siciliana e problemi di conservazione
2011
Biogeographia vol. XXX — 2011 (Pubblicato il 23 dicembre 2011) La Biogeografia della Sicilia Taxa relitti della flora forestale siciliana e problemi di conservazione ROSARIO SCI-IICCHI, PASQUALE MARINO Dipartimmto a’z' Biologia Ambientale e Biocliversita, Universita degli Studi ali Palermo, via Arckirafi 38, 90123 Palermo (Italy); e—mail: r05arz'o.5c/Jz'ccbz'@unz'pa.it Key words: forest flora, relic taxa, Sicily. SUMMARY This contribution concerns some woody species representative of the forest landscape in Sicily, paying atten- tion both For their current relict status and their risk to become extinct. For each taxon threats, risk categories, as- sessed or assigned on the …
Caratteri biogeografici della flora vascolare della Sicilia
2011
Biogeographia vol. XXX - 2011 (Pubblicato il 23 dicembre 2011) La Biogeografla della Sicilia Caratteri biogeografici della flora Vascolare della Sicilia FRANCESCO M. RAIMONDO, VIVIENNE SPADARO Uniz/ersita di Palermo - Dzjmrtimmto di Biologia Am/aientale e Biodizxersita, via Arc/airafi 38, I—90]23 Palermo (Italy); e—maz'[.-fiancesco. raimondo @am]ga.z't Key words: chorology, endemism, vascular flora, Sicily. SUMMARY According to a recent catalogue and other new contributions, the vascular flora of Sicily consists of more than 3,250 specific and intraspecific taxa. Among them endemic taxa, including those very local and threatened, amount to 16%. Noteworthy are both adventitious and naturaliz…
Considerazioni biogeografiche sulla presenza di specie aliene nella flora vascolare del Mediterraneo
2011
Biogeographia vol. XXX - 2011 (Pubblicato il 23 dicembre 2011) La Biogeografia della Sicilia Considerazioni biogeografiche sulla presenza di specie aliene nella flora Vascolare del Mediterraneo GIANNIANTONIO DOMINA, PIETRO MAZZOLA Dipartimento di Biologia Ameientale e Biodiversita, Universita a’egli Studi di Palermo, via Arc/airafi 38, 90123 Palermo (Italy) Key words: alien vascular flora, islands, Mediterranean, statistics. SUMMARY Relations between the occurrence of aliens and biogeographic Features of some territories in the Mediterranean are analysed. Mediterranean islands host a higher percentage of aliens in comparison with the mainland. The most ‘ important relations have been observed be…
Co-factors, Microbes, and Immunogenetics in Celiac Disease to Guide Novel Approaches for Diagnosis and Treatment.
2021
Celiac disease (CeD) is a frequent immune-mediated disease that affects not only the small intestine but also many extraintestinal sites. The role of gluten proteins as dietary triggers, HLA-DQ2 or -DQ8 as major necessary genetic predisposition, and tissue transglutaminase (TG2) as mechanistically involved autoantigen, are unique features of CeD. Recent research implicates many cofactors working in synergism with these key triggers, including the intestinal microbiota and their metabolites, nongluten dietary triggers, intestinal barrier defects, novel immune cell phenotypes, and mediators and cytokines. In addition, apart from HLA-DQ2 and -DQ8, multiple and complex predisposing genetic fact…
Intestinal Microbiota and Celiac Disease: Cause, Consequence or Co-Evolution?
2015
It is widely recognized that the intestinal microbiota plays a role in the initiation and perpetuation of intestinal inflammation in numerous chronic conditions. Most studies report intestinal dysbiosis in celiac disease (CD) patients, untreated and treated with a gluten-free diet (GFD), compared to healthy controls. CD patients with gastrointestinal symptoms are also known to have a different microbiota compared to patients with dermatitis herpetiformis and controls, suggesting that the microbiota is involved in disease manifestation. Furthermore, a dysbiotic microbiota seems to be associated with persistent gastrointestinal symptoms in treated CD patients, suggesting its pathogenic implic…
Modulation of lipid metabolism and colonic microbial diversity of high-fat-diet C57BL/6 mice by inulin with different chain lengths
2019
Abstract The physicochemical properties, biological functions and microbial degradation of inulins differ according to their degree of polymerization. However, the relationship between inulin activities and its effect on gut microbiota remains unknown. In this study, high fat diet with inulin (1 or 5 g/kg·bw), either with short or long chains groups were administered to different groups of mice (n = 10) for 10 weeks in order to investigate the effect of inulin on the microbial diversity of the animals. Litchi pericarp procyanidins (LPPC) were used for comparison purposes. Furthermore, the lipid metabolism and key regulator genes in mice were determined. The results indicated that natural in…
The gut microbiota - a modulator of endothelial cell function and a contributing environmental factor to arterial thrombosis.
2019
Introduction: There is emerging evidence linking the commensal gut microbiota with the development of cardiovascular disease and arterial thrombosis. In immunothrombosis, the host clotting system protects against the dissemination of invading microbes, not considering the huge number of microbes that interact with host physiology in a mutualistic fashion. Areas covered: Interestingly, recent research revealed that colonizing gut microbes profoundly influence host innate immune pathways that support arterial thrombus growth. The gut microbiota promotes arterial thrombus formation by enhancing the pro-adhesive capacity of the vascular endothelium, triggering hepatic von Willebrand factor synt…
High-throughput sequencing of the 16S rRNA gene to analyze the gut microbiome in juvenile and adult tropical gar (Atractosteus tropicus)
2020
Tropical gar (Atractosteus tropicus) is freshwater and estuarine fish, inhabiting the Earth since the Mesozoic era and undergoing limited physiological variation ever since. Besides its recognized cultural and scientific relevance, the species has seen remarkable growth in its economic impact due to pisciculture. In this study, we present the first report of the whole taxonomic composition of microbial communities in gut contents in juveniles and adults of A. tropicus, by sex and origin (wild and cultivated). For this study, 508 genera were identified, with the most and least abundant being Cetobacterium and Paludibacter, respectively. Fusobacteria, Proteobacteria, Firmicutes, and Bacteroid…