Search results for "FISIOLOGIA VEGETAL"
showing 10 items of 57 documents
Antibacterial activity and HPLC analysis of extracts from Mediterranean brown algae
2020
The antibacterial activity of methanolic extracts of eight Mediterranean brown algae belonging to the genera Cystoseira sensu lato, Dictyopteris and Padina was investigated. Extracts from Sargassaceae showed antibacterial activity. Specifically, Carpodesmia crinita and Carpodesmia brachycarpa extracts inhibited the growth of the Gram-positive strain Kocuria rhizophila whereas Cystoseira compressa and Carpodesmia amentacea extracts showed antibacterial activity against the Gram-positive strains, Kocuria rhizophila and Staphylococcus aureus. None of them inhibited the growth of the Gram-negative bacterium Escherichia coli. The extracts of Cystoseira sp. pl. and Treptacantha ballesterosii did …
Phelipanche lainzii, nueva Orobáncacea para la península Ibérica
2012
[ES] Se describe una nueva especie ibérica perteneciente al género Phelipanche Pomel (Orobanchaceae): Ph. lainzii, sp. nov., hallada en el noreste de la provincia de Albacete, cerca de la provincia de Valencia (E de España). Entre otras características, presenta por lo general tallo mediano a pequeño, inflorescencia densa, corola azul pálido de tubo estrecho, apenas infundibuliforme y no muy ensanchado en la garganta, con lóbulos del labio inferior no deflexos y cáliz con dientes subulados. Su morfología es parecida a Ph. mutelii (F.W. Schultz) Pomel, Ph. camphorosmae Carlón, G. Gómez, M. Laínz, Moreno Mor., Ó. Sánchez & Schneew. y Ph. nana (F.W. de Noë ex Rchb. fil.) Soják, por lo que se a…
Routes to cell death in animal and plant kingdoms: from classic apoptosis to alternative ways to die—a review
2018
Programmed cell death is fundamental for multicellular organisms either in animal or plant kingdom. Classic apoptosis, which represents the best studied form of cell death, is dependent on caspase protease activity in animals. These proteases are not present in plants, where caspase-like activities, including metacaspases, are involved in the execution of plant cell death. Beyond apoptosis, various non-apoptotic forms of cell death also exist, including autophagy, necroptosis, pyroptosis, and ferroptosis. These types of cell death can be activated independently of apoptosis and sometimes occur when apoptosis is inhibited. Non-apoptotic forms of cell death are best characterized in animals, …
CHARACTERIZATION OF WATER RELATION TRAITS IN WILD SICILIAN POPULATIONS OF BRASSICA
2015
The aims of this work are to Investigate the variability in water relation traits among wild Brassica relatives adapted to arid and saline environments and to Identify specific differences in physiological traits that may be used to improve cultivated relatives widely used in our diet, such as broccoli, cabbage and kale.
Investigating the ecology of Chara cf. baltica (Characeae) in the Lago Preola ecosystem (Sicily, Italy)
2018
Lago Preola is a small lake, located in SW Sicily, in a karstic depression within the Nature Reserve “Lago Preola e Gorghi Tondi”. With about 33 ha (maximum depth: 2 m), it is the widest of the 5 natural lakes occurring in the Reserve. The presence of species of conservation concern (e.g., Emys trinacris, the Sicilian Pond Turtle, and several migratory birds), but also of invasive alien species (e.g., Procambarus clarckii, the Red Swamp Crayfish), has been reported for the area. The flora of terrestrial habitats surrounding the basins has been studied extensively, while the aquatic flora and vegetation have not been studied in detail. The coastal aquifer supplying groundwater to the study a…
Formazione di callo in Adenostyles alpina subsp. nebrodensis (Asteraceae)
2013
Effect of salinity on Puccinellia distans (L.) Parl. treated with NaCl and foliarly applied glycinebetaine
2009
Turfgrasses general appearance is much affected by environmental stresses because the species used for this purpose are particularly exigent in terms of technical inputs and water need. In the Mediterranean area, sometimes irrigation is provided by using waste water which may contain high concentrations of dissolved salts which can cause salt stress injury and poor turf quality. Puccinellia distans (L.) Parl. is a halophyte cool season grass that seems to have a high salinity tolerance when cultivated in sodic soils or in NaCl-rich hydroponic cultures. We investigated the response of P. distans to salinity in a soil culture in a controlled growth environment. The effect of different concent…
Potassium deficiency and drought stress in grapevine cultivars
2014
Potassium availability affects drought responses in plants through several metabolic roles, among which stomatal regulation, cell growth and xylem hydraulics. Vitis vinifera L. is a highly valuable crop and several genotypes have been selected during its millennial cultivation. Varieties show differences in their adaptability to stress conditions, making them more or less suitable to certain climatic and edaphic conditions. The varieties cultivated in Sicily are characterized by high variability. We investigated the response of two Sicilian cultivars (Nero d'Avola and Catarratto) to potassium deficiency and drought stress. Two-year-old grafted plants were grown in agriperlite, with or witho…
Leaf water relation traits in typical Sicilian varieties of Vitis vinifera L.
2014
In Italy, grapevines are extensively cultivated, with Sicily representing one of the most significant wine regions. The high number of autochthonous grapevine varieties represents an important source of genetic diversity, and the many Sicilian varieties have anatomical and physiological traits that allow them to resist to different levels of drought stress. We investigated the water relation parameters of four cultivars of Vitis vinifera L. (Catarratto, Corinto, Nero d'Avola and Zibibbo) and characterized their leaf hydraulics. Measurements were conducted during summer on plants growing in the experimental field of the IBBR-CNR near Palermo. Daily patterns of leaf water potential (Yleaf) an…