Search results for "Flora"
showing 10 items of 989 documents
The impact of alien vascular plants in the aquatic habitats of a mediterranean island: preliminary data and observations in Sicily
2016
As is well known, invasive alien species pose a major global threat to the conservation of biodiversity, causing the extinction of native species and modifying ecosystem functions: this is true also for aquatic habitats, particularly susceptible to invasion due to usually high disturbance regimes and easy dispersal of propagules. The island of Sicily is one of the main hotspots of plant biodiversity, in the center of the Mediterranean basin; it hosts different types of freshwater habitats, both lentic (coastal wetlands, saltworks, temporary ponds, lakes, reservoirs) and lotic (springs, streams, permanent and seasonal rivers). As a first step of our analysis of the effects of the alien vascu…
Identificación de dianas e interactores de TFL1, un regulador clave en la floración y la arquitectura de la inflorescencia
2020
La transición de la fase vegetativa a la reproductiva, también conocida como transición floral, es un paso crítico en ciclo de vida de las plantas, por lo que se encuentra finamente regulada por una compleja red genética que responde a factores tanto endógenos como ambientales. El gen TFL1, y su homólogo FT, son dos de los reguladores claves de la transición floral. Ambos codifican para proteínas del tipo PEBP (Phosphatidil Ethanolamine Binding Proteins) y, aunque no son factores de transcripción, ambos son capaces de regular la expresión de los genes responsables de la iniciación floral. Sin embargo, el modo de acción de TFL1 como regulador transcripcional no se conoce con detalle. Se ha p…
Probiotics in the prevention and treatment of atopic dermatitis
2020
The use of probiotic supplements might change the composition of the intestinal flora of children, subsequently modulating the immune system's reactivity. The effects of probiotic administration for the prevention/treatment of allergic diseases and atopic dermatitis, in particular, are still so controversial that no definitive recommendation can be made at this stage. Differences in strain specificity, timing, and length of administration all contribute to diversifying the conclusions of this review.
Probiotiku izvēle atopiskā dermatīta gadījumos
2018
Alerģijas epidēmijas veicināšanā lielu lomu spēlē mūsdienu attīstītās sabiedrības dzīvesveids, kuru raksturo mikrobiālas floras nomākšana, tā izmainot cilvēka mikrobiotu un negatīvi ietekmējot imūno regulāciju (Fiocchi et al 2015). Maģistra darba mērķis bija noskaidrot dermatologu viedokli par atopisko dermatītu, ņemot vērā ārstēšanas vadlīnijas, un, izanalizējot zinātniskās publikācijas, izpētīt atopiskā dermatīta ārstēšanas tendences Latvijā, un izpētīt probiotiķu lomu atopiskā dermatīta profilaksē. Anketas aizpildīja ārsti – dermatologi (praktizējošie ārsti). Datu analīzei tika izmantotas 70 aptaujas. Secinājumi: Atopiskā dermatīta ārstēšanā visbiežāk izvēlas topiski lietojamos glokokort…
Banca del Germoplasma di Specie Spontanee (BGS-CT), Orto Botanico di Catania
2010
La Banca del Germoplasma delle specie spontanee dell’Orto Botanico dell’Università di Catania (BGS-CT) è stata realizzata con moderni criteri strutturali e strumentalia partire dal 2004. La Banca ha sede in locali appositamente dedicati nelle adiacenze dell’Orto Botanico e Dipartimento di Botanica nel pieno centro cittadino. L’attività principale è la conservazione ex situ dei semi di specie endemiche, rare e minacciate della flora siciliana, come pure di specie arboree e arbustive di interesse forestale. Con lo scopo di fornire un profilo attuale dell’istituzione, si riportano le informazioni relative alla struttura, al suo personale, alle metodologie impiegate e alle strumentazioni esiste…
CARATTERIZZAZIONE DELLE EUFORBIE DELLA FLORA SICILIANA TRAMITE “DNA BARCODING”
2013
Il genere Euphorbia L. in Sicilia comprende 36 taxa (1, 2) di cui 8 endemici e subendemici, 21 a distribuzione mediterranea, 5 europea e 2 ancora più ampia. Si tratta di entità presenti nei più svariati contesti ecologici, aventi in comune una caratteristica tossicità derivante dalla presenza di vari alcaloidi più o meno concentrati nel latice. Alcune euforbie sono tipiche della macchia mediterranea, altre si rinvengono nell’ambito di formazioni prative e forestali di alta quota, alcune sono casmofite, altre psammofite. In particolare, le entità native in Sicilia sono: E. akenocarpa Guss., E. aleppica L., E. biumbellata Poir., E. bivonae Steud., E. ceratocarpa Ten., E. characias L., E. cora…
Calendula maritima
2017
Prebiotic Xylo-oligosaccharides Targeting Faecalibacterium prausnitzii Prevent High Fat Diet-induced Hepatic Steatosis in Rats
2020
Understanding the importance of gut microbiota (GM) in non-alcoholic fatty liver disease (NAFLD) has raised the hope for therapeutic microbes. We have shown that high hepatic fat associated with low abundance of Faecalibacterium prausnitzii in humans and further, administration of F. prausnitzii prevented NAFLD in mice. Here, we aimed to target F. prausnitzii by prebiotic xylo-oligosaccharides (XOS) to treat NAFLD. First, the effect of XOS on F. prausnitzii growth was assessed in vitro. Then, XOS was supplemented or not with high (HFD) or low (LFD) fat-diet for 12-weeks in Wistar rats (n=10/group). XOS increased F. prausnitzii growth having only minor impact on the GM composition. When supp…
Limonium poimenum (Plumbaginaceae), a new chasmophyte species from Sicily
2014
Limonium poimenum is here proposed as a new species for Science. It is a very peculiar and extremely localized species, growing on a calcareous mountain of NW Sicily (southern Italy), where it grows on rupestrian places together with many other rare chasmophytic endemics. Iconography, morphological features, ecology and conservation status are provided, as well as a morphological comparison with L. todaroanum.
Types of names of Orobanche taxa described from North Africa
2013
In the framework of the revision of the genus Orobanche (including Phelipaea) in the Mediterranean area, the original material for 31 names of new taxa described from North Africa by Ball, Battandier, Forsska°l, Maire (partly with Emberger and Jahandiez), Persoon, Poiret and Pomel has been analysed. Typification is discussed, and where necessary types are designated. Accepted names and synonyms of the recognized taxa are given. Three species are illustrated, and one new combination (O. inexspectata) is proposed.