Vicenta De La Fuente | Universidad Autónoma de Madrid (original) (raw)

Papers by Vicenta De La Fuente

Minerals, 2018

Although biomineralization in plants is an important area of research, there is very limited info... more Although biomineralization in plants is an important area of research, there is very limited information. In this work, we report the location of Na, K, Ca, Mg and Fe biominerals in Sarcocornia pruinosa (Chenopodiacaeae), a halophyte species growing in the estuarine area of Río Tinto, an extreme acidic environment. The estuarine soils of the Tinto basin are characterized by slightly acidic pH and high concentrations of ions. They are exposed to Atlantic Ocean tides that contribute to the increase in pH, Na and Mg concentrations. The aim of this work was to characterize the elemental composition and to identify the biominerals detected in cell tissues of S. pruinosa. Analytical techniques, such as ICP-MS (Inductively coupled plasma mass spectrometry), XRD and microscopy such as OM (optical microscopy) with histochemical staining, SEM and TEM (scanning and transmission electronic microscopy) coupled with EDX (energy dispersive X-ray) were carried out to analyze the plant tissues of S....

Mediterranean Botany, 2019

A new species of Arthrocaulon Piirainen & G. Kadereit, A. meridionalis is described. This diploid... more A new species of Arthrocaulon Piirainen & G. Kadereit, A. meridionalis is described. This diploid taxon is known from the islands of Sicily and Sardinia and from circum-Mediterranean territories (from North Africa to the Anatolian Peninsula in Turkey and as far as the Persian Gulf on the Asian continent). The distinctive macro-, micromorphological and chorological features of this taxon are given.

Resumen: Fuente, V. de la & Ortunez, E. Nueva especie de Festuca L. seccion Festuca (Poaceae) en ... more Resumen: Fuente, V. de la & Ortunez, E. Nueva especie de Festuca L. seccion Festuca (Poaceae) en la Peninsula Iberica. Lazaroa 21:3-6 (2001).Se describe una nueva especie de Festuca L., Festuca gredensis,para la Sierra de Gredos (Sistema Central, Espana). Se aportan ca-racteres morfologicos, anatomicos y citologicos de este taxon.Abstract: Fuente, V. de la & Ortunez, E. New species of Festuca L. section Festuca (Poaceae) on the Iberian Peninsula. Lazaroa 21: 3-6 (2001).A new species of Festuca L., Festuca gredensis, is described from the Sierra de Gredos (Central Mountain System, CentralSpain). Morphological, anatomical and chorological characters of the taxon are presented.* Departamento de Biologia. Facultad de Ciencias. Universidad Autonoma de Madrid. Ciudad Universitaria de Cantoblanco. E-28049 Madrid. Espana. E-mail: vicenta.fuente@uam.es, emma.ortunez@uam.es INTRODUCCIONEn el transcurso de nuestras investigaciones rea-lizadas en el genero Festuca L. seccion Festuca [se-ries In...

The Sistema Central or Central Range has an overall length of 600 km and is the most extensive mo... more The Sistema Central or Central Range has an overall length of 600 km and is the most extensive mountain range on the Iberian Peninsula. It has an alpine orogeny and is located in the centre of the peninsula running northeast-southwest in its eastern part (Ayllon and Guadarrama ranges), and east-west in its western part (Guadarrama, Gredos and Estrela ranges). The whole system comprises a continuous series of smaller mountain ranges, including valleys and various natural areas. It occupies a vast territory from the middle of Portugal (Serra da Estrela) to the Sierra de Ayllon range in the east, and acts as a natural division of the Castilian central plateau, separating the northern plateau (Castile and Leon) from the southern plateau (Madrid, Castile-La Mancha and Extremadura). It generally represents the watershed between two of the most important Iberian rivers: the Duero and the Tagus. The highest point of the whole Iberian Central Range is the Almanzor Peak (2592 m) in the centra...

Foods

Many halophytes have great nutritional and functional potential, providing chemical compounds wit... more Many halophytes have great nutritional and functional potential, providing chemical compounds with biological properties. Salicornia patula Duval-Jouve is a common euhalophyte from saline Mediterranean territories (Spain, Portugal, France, and Italy). In the present work we quantified for the first time the bioactive compounds in S. patula (total phenolic compounds and fatty acids), from Iberian Peninsula localities: littoral-coastal Tinto River basin areas (southwest Spain, the Huelva province), and mainland continental territories (northwest and central Spain, the Valladolid and Madrid provinces). Five phenolic acids including caffeic, coumaric, veratric, salicylic, and transcinnamic have been found with differences between mainland and coastal saltmarshes. S. patula contain four flavonoids: quercetin-3-O-rutinoside, kaempferol/luteolin, apigenin 7-glucoside, and pelargonidin-3-O-rutinoside. These last two glycosylated compounds are described for the first time in this genus of Ch...

Canadian journal of microbiology, Jan 6, 2018

Soda lakes are inhabited by important haloalkaliphilic microbial communities that are well adapte... more Soda lakes are inhabited by important haloalkaliphilic microbial communities that are well adapted to these extreme characteristics. The surface waters of the haloalkaline Mono Lake (CA, USA) are alkaline but, in contrast to its bottom waters, do not present high salinity. We have studied the microbiota present in the shoreline sediments of Mono Lake using next-generation sequencing techniques. The statistical indexes showed that Bacteria had a higher richness, diversity and evenness compared to Archaea. 17 phyla and 8 "candidate divisions", were identified among the Bacteria, with a predominance of the phyla Firmicutes, Proteobacteria and Bacteroidetes. Among the Proteobacteria, there was a notable presence of Rhodoplanes and a high diversity of sulfate-reducing (SRB) Deltaproteobacteria, in accordance with the high sulfate-reducing activity detected in soda l...

Plant physiology and biochemistry : PPB, 2018

A protective effect by silicon in the amelioration of iron chlorosis has recently been proved for... more A protective effect by silicon in the amelioration of iron chlorosis has recently been proved for Strategy 1 species, at acidic pH. However in calcareous conditions, the Si effect on Fe acquisition and distribution is still unknown. In this work, the effect of Si on Fe, Mn, Cu and Zn distribution was studied in rice (Strategy 2 species) under Fe sufficiency and deficiency. Plants (+Si or-Si) were grown initially with Fe, and then Fe was removed from the nutrient solution. The plants were then analysed using a combined approach including LA-ICP-MS images for each element of interest, the analysis of the Fe and Si concentration at different cell layers of root and leaf cross sections by SEM-EDX, and determining the apoplastic Fe, total micronutrient concentration and oxidative stress indexes. A different Si effect was observed depending on plant Fe status. Under Fe sufficiency, Si supply increased Fe root plaque formation, decreasing Fe concentration inside the root and increasing the...

Planetary and Space Science, 2007

The geomicrobiological characterization of the Río Tinto (Iberian Pyritic Belt) has recently prov... more The geomicrobiological characterization of the Río Tinto (Iberian Pyritic Belt) has recently proven the importance of the iron cycle, not only in the generation of the extreme conditions of the habitat (low pH, high concentration of heavy metals), but also in the maintenance of a high level ...

Journal of Archaeological Science, 2010

Bulk samples of mortars from the Santa Eulalia de Bóveda temple (NW Spain) have been characterize... more Bulk samples of mortars from the Santa Eulalia de Bóveda temple (NW Spain) have been characterized from a chemical and mineralogical point of view, with the aims of contributing technological and provenance inferences, and evaluating possible correlations with the various identified stages along historical periods of construction.Mortar samples were analyzed by X-ray diffraction and neutron activation analysis.Mineralogical associations found are

Journal of Environmental & Analytical Toxicology, 2015

Lazaroa, 2011

Fuente, V. de la, Rufo Nieto, L. & Sánchez-Mata, D. Sarcocornia hispanica (Chenopodiaceae), a new... more Fuente, V. de la, Rufo Nieto, L. & Sánchez-Mata, D. Sarcocornia hispanica (Chenopodiaceae), a new species from the Iberian Peninsula. Lazaroa 32: 9-13 (2011).

Anales Del Jardin Botanico De Madrid, 1999

Resumen: Loen le. V de la. Vegetación aréfila del occideon, de la provtíc~a dc Guadalajara (Espa-... more Resumen: Loen le. V de la. Vegetación aréfila del occideon, de la provtíc~a dc Guadalajara (Espa-ña> lozano,, 8:123-219 (1985) Se hace una síntesis de las eomtiiiitlisdes vegetales del occidente de la provincia de (iuada3a~a ra. Se descr¡ben algunos sintáxones nuevos así como sc aportan datos tiorístícos, ecológicos corolagicíís de aíras. Al mismo liempo hacernos una descripción de las series de vegetación que se encueniran en el territoriO -Ahstract: Fuente. \ . de la. Y/u orophyle iegetalion of u'cstern Guadalajara proehu.c (Spain). Lasarna. 8: /23-2/9 (19851