Search results for "sistematica"

Chemical composition of the essential oils of three endemic species of Anthemis sect. Hiorthia (DC.) R.Fern. growing wild in Sicily and chemotaxonomi…

2014

The chemical composition of the essential oils isolated from the aerial parts of Anthemis pignattiorum Guarino, Raimondo & Domina and A. ismelia Lojac. and the aerial parts and flowers of Anthemis cupaniana Tod. ex Nyman , three endemic Sicilian species belonging to the section Hiorthia, was determined by GC-FID and GC/MS analyses. (Z)-Muurola-4(14),5-diene (27.3%) was recognized as the main constituent of the A. pignattiorum essential oil, together with isospathulenol (10.6%), sabinene (7.7%), and artemisyl acetate (6.8%), while in the oil obtained from the aerial parts of A. ismelia , geranyl propionate (8.8%), bornyl acetate (7.9%), β-thujone (7.8%), neryl propionate (6.5%), and t-muurol…

A new species of Kali (Salsoloideae, Chenopodiaceae) from Sicily, supported by molecular analysis

2015

Nomenclatural and taxonomical considerations on Kali , a controversial genus recently segregated from the polyphyletic Salsola s. lat. ( Chenopodiaceae ), are provided. The Kali group includes annual plants with leaves ending in a spine and lacking hypodermis, having also a cortex alternate to longitudinal chlorenchymatous striae. The species belonging to this genus mainly have a paleotemperate distribution (Europe, Asia and North Africa), occurring as aliens in North America, Australia and South Africa. A new species collected on Mt. Etna (Sicily), and closely related to K. australe , is described and illustrated as K. basalticum Its morphological and molecular features, karyology (2n=54),…

Seed germination in Sarcopoterium spinosum (L.) Spach from South-Eastern Sicily

2012

Sarcopoterium spinosum (L.) Spach is a nanophanerophyte whose presence in Sicily is limited to the South-East of the island. A study on seed germination behaviour of seeds collected from some populations indicates low viability of seedlings which could seriously put the long-term survival of these populations at risk.

First Report of Agaricus aridicola in Saudi Arabia and Ecological Notes on Agaricus bisporus

2015

Agaricus aridicola is reported for the first time from Saudi Arabia while Agaricus bisporus is a new record for Northern region of Saudi Arabia. This study includes notes on taxonomy, ecology and distribution of both the species. It was also reported that the habitat of A. aridicola and A. bisporus are characterized by calcareous sandy soil, poor in organic matter, with presence of little amount of salinity.

Medicinal Mushrooms as Part of the "Third Mission" Activities of Univesities - A Science to Business Initiative Related to Mycotherapy

2021

In Italy, the National Agency for the Evaluation of the University System and Research (ANVUR) carries out a systematic evaluation of the "Third Mission" activities of universities and research bodies. In this perspective, universities already engaged in research on medicinal mushrooms and on their potential applications in the industrial sector set the frame for collaboration with large, well-reputed private companies. In Italy, one of the major problems of mycotherapy is related to lack of certification and the dubious origin/identity of mushroom extracts used by the industry. Hence, products deriving from medicinal mushrooms that are in trade do not often meet the required quality criter…

Analisi micromorfologiche sui semi di alcune specie annuali di Astragalus (Fabaceae) e loro implicazioni nella sistematica del gruppo.

2011

Il lavoro analizza i risultati di indagini micromorfologiche su taxa annuali del genere Astragalus. Le analisi morfometriche e quelle ultrastrutturali condotte al SEM evidenziano modelli d'architettura differenti e di rilevanza tassonomica nel gruppo.

La morfologia ultrastrutturale dei semi come strumento per l'identificazione delle specie del genere Brassica (Brassicaceae)

2011

Sono presentati i risulati di uno studio micromorfologico dei semi sei taxa siciliani del genere Brassica. I dati morfometrici e l'ultrastruttura della testa dei semi al SEM ha evidenziato differenze significative tra specie e/o popolazioni da utilizzare a fini tassonomici.

Variabilità morfologica e ultrastrutturale dei semi nel gruppo di Allium cupanii (Alliaceae, Sez. Cupanioscordum)

2012

Seed germination reports of high mountain species native to Mount Etna (Sicily)

2020

The germination ability of five endemic species from the high mountain belt of Mt. Etna were studied; they are Astragalus siculus, Erysimum etnense, Senecio squalidus subsp. aethnensis, Silene italica subsp. sicula, and Tanacetum vulgare subsp. siculum. Mature seeds were collected in the field, within an elevation range of 1700–2000 m a.s.l. Different experimental conditions were tested and the best methods with optimal germination results are provided and compared for each species. First germination records are given for 4 out of 5 of the investigated taxa.

Lulwoana sp., a dark septate endophyte (DSE) in roots of Posidonia oceanica (L.) Delile seagrass

2014

Posidonia oceanica is the most common, widespread and important monocotyledon seagrass in the Mediterranean Basin, and hosts a large biodiversity of species, including microorganisms with key roles in the marine environment. In this study, we ascertain the presence of a fungal endophyte in the roots of P. oceanica growing on different substrata (rock, sand and matte) in two Sicilian marine meadows. Staining techniques on root fragments and sections, in combination with microscope observations, were used to visualise the fungal presence and determine the percentage of fungal colonisation (FC) in this tissue. In root fragments, statistical analysis of the FC showed a higher mean in roots anch…