Papers by Stefania De Pascale
Journal of Plant Interactions, 2009
... 200134. Levine, LH, Heyenga, AG, Levine, HG, Choi, JW, Davin, LB, Krikorian, AD and Lewis, NG... more ... 200134. Levine, LH, Heyenga, AG, Levine, HG, Choi, JW, Davin, LB, Krikorian, AD and Lewis, NG. 2001. ... [CrossRef], [PubMed] View all references; Levine et al. 200134. Levine, LH, Heyenga, AG, Levine, HG, Choi, JW, Davin, LB, Krikorian, AD and Lewis, NG. 2001. ...
In this work the profile of primary metabolites in potato (Solanum tuberosum L., cultivar Agria) ... more In this work the profile of primary metabolites in potato (Solanum tuberosum L., cultivar Agria) grown under organic vs traditional farming system was studied, and the influence of heat processing (for producing potato powder) on nutritionally important compounds such as essential amino acids, proteins and carbohydrates was evaluated. The potato powder was obtained by means of a drum dryer using different process parameters (temperature, time and product thickness) to minimise thermal damage on the final product. The effects of these different processes were evaluated by analysing also some other quality indicators, as final moisture, colour of the powder, and rheological properties of the rehydrated puree. Moreover, because of its potential cancerogenity and genotoxicity, acrylamide content was determined in the potato powder obtained and compared with that of its main precursors (asparagine and reducing sugars). The steam pressure of 0.2 MPa and 2 r.p.m. allowed to obtain potato powder with a lower acrylamide contents and still a very low water content that caused no microbiological safety problems. This powder, both from conventional and organic farming, when rehydrated, resulted in purees with minimal nutritional losses and colour and consistency very similar to the fresh ones.
http://www.sciencedirect.com/science/article/pii/S0308814611013057
European Journal of Agronomy, 2008
... 1996). Lisine and methionine, for example, are essential amino acids that have been found to ... more ... 1996). Lisine and methionine, for example, are essential amino acids that have been found to decrease in response to nitrogen fertilization in wheat and spinach, respectively (Schuphan, 1974). Similarly, Eppendorfer et al. (1979 ...
Quando sono riferiti alla nutrizione minerale delle piante, i termini 'assorbimento' e 'assimilaz... more Quando sono riferiti alla nutrizione minerale delle piante, i termini 'assorbimento' e 'assimilazione' sono spesso confusi ma si riferiscono, invece, a due processi molti diversi. L'assorbimento indica l'assunzione di elementi nutritivi (in genere in forma ionica) dal mezzo di crescita attraverso le radici e talvolta anche attraverso le foglie (ad esempio nel caso della concimazione fogliare). L'assimilazione, al contrario, indica il processo attraverso il quale gli elementi minerali assorbiti vengono utilizzati dalle piante per la sintesi di composti organici più o meno complessi. In questo senso, il termine 'organicazione' può essere considerato un sinonimo di 'assimilazione'.
Può essere utilizzata sia in bordure che in vasi fioriti, in pos Può essere utilizzata sia in bor... more Può essere utilizzata sia in bordure che in vasi fioriti, in pos Può essere utilizzata sia in bordure che in vasi fioriti, in posizioni soleggiate. Gli steli recisi izioni soleggiate. Gli steli recisi hanno un buon valore estetico e i fiori una fragranza gradevole, hanno un buon valore estetico e i fiori una fragranza gradevole, tuttavia l tuttavia l' 'altezza ridotta e la altezza ridotta e la durata limitata prefigurano una migliore utilizzazione di questa durata limitata prefigurano una migliore utilizzazione di questa specie come pianta fiorita in specie come pianta fiorita in vaso o come ornamentale per giardini costieri. vaso o come ornamentale per giardini costieri.
Food Chemistry, 2008
Glucosinolates in different ecotypes of Brassica rapa L. subsp. sylvestris L. Janch. var. esculen... more Glucosinolates in different ecotypes of Brassica rapa L. subsp. sylvestris L. Janch. var. esculenta Hort. widely distributed in Southern Italy and locally known as ''friariello" and ''cima di rapa", were characterized and their glucosinolate composition was compared with that of broccoli (Brassica oleracea L. var. italica).
Physiologia Plantarum, 2000
Plants have evolved complex mechanisms to perceive environmental cues and develop appropriate and... more Plants have evolved complex mechanisms to perceive environmental cues and develop appropriate and coordinated responses to abiotic and biotic stresses. Considerable progress has been made towards a better understanding of the molecular mechanisms of plant response to a single stress. However, the existence of cross-tolerance to different stressors has proved to have great relevance in the control and regulation of organismal adaptation. Evidence for the involvement of the signal peptide systemin and jasmonic acid in wound-induced salt stress adaptation in tomato has been provided. To further unravel the functional link between plant responses to salt stress and mechanical damage, transgenic tomato (Lycopersicon esculentum Mill.) plants constitutively expressing the prosystemin cDNA have been exposed to a moderate salt stress. Prosystemin over-expression caused a reduction in stomatal conductance. However, in response to salt stress, prosystemin transgenic plants maintained a higher stomatal conductance compared with the wild-type control. Leaf concentrations of abscissic acid (ABA) and proline were lower in stressed transgenic plants compared with their wild-type control, implying that either the former perceived a less stressful environment or they adapted more efficiently to it. Consistently, under salt stress, transgenic plants produced a higher biomass, indicating that a constitutive activation of wound responses is advantageous in saline environment. Comparative gene expression profiling of stress-induced genes suggested that the partial stomatal closure was not mediated by ABA and/or components of the ABA signal transduction pathway. Possible cross-talks between genes involved in wounding and osmotic stress adaptation pathways in tomato are discussed. † Present address:
Journal of Plant Interactions, 2007
... This feasibility study will last about 9 months, subdivided into three main phases, as descri... more ... This feasibility study will last about 9 months, subdivided into three main phases, as described ... Finally, it is worth mentioning that the lighting system in the functional architecture shown in ... duration in case of the Moon base, drive the choice towards hybrid systems, using both ...
European Journal of Agronomy, 2007
... sylvestris L. Janch. var. esculenta Hort.) ecotypesLingua di Cane and Sorrentino. ... We fou... more ... sylvestris L. Janch. var. esculenta Hort.) ecotypesLingua di Cane and Sorrentino. ... We found a significantly higher flavonols content in the ecotype Sorrentino, whereas its glucosinolates level was relatively smaller compared to Lingua di Cane. ...
Glucosinolates in different ecotypes of Brassica rapa L. subsp. sylvestris L. Janch. var. esculen... more Glucosinolates in different ecotypes of Brassica rapa L. subsp. sylvestris L. Janch. var. esculenta Hort. widely distributed in Southern Italy and locally known as ''friariello" and ''cima di rapa", were characterized and their glucosinolate composition was compared with that of broccoli (Brassica oleracea L. var. italica).
European Journal of Agronomy, 2004
On an experimental field that had been irrigated with saline water for more than 10 years, we ass... more On an experimental field that had been irrigated with saline water for more than 10 years, we assessed the effects of saline irrigation on water relations and yield of a processing tomato crop (Lycopersicon lycopersicum Mill., Cois HC01). Three NaCl concentrations (43, 86 and 171mM) and a non-salinized control were compared. Total (Ψt), osmotic (Ψπ) and pressure (Ψp) potentials decreased
ABSTRACT Bougainvillea is widely used as flowering shrub in gardening and landscaping in the Medit... more ABSTRACT Bougainvillea is widely used as flowering shrub in gardening and landscaping in the Mediterranean region characterized by limited water supply. The evaluation of deficit irrigation as a possible technique to improve water productivity and selection of genotypes that can better withstand soil water deficits are essential for sustainable production. A greenhouse experiment was conducted to determine the effects of deficit irrigation on three potted Bougainvillea genotypes [B. glabra var. Sanderiana, B. x buttiana ‘Rosenka’, B. ‘Lindleyana’ (=B. ‘Aurantiaca’)] grown in two shapes, globe and pyramid, on agronomical and physiological parameters. Irrigation treatments were based on the daily water use (100%, 50%, or 25%). The shoot, total dry biomass, leaf number, leaf area, and macronutrient [nitrogen (N), phosphorus (P), and potassium (K)] concentration decreased in response to an increase in water stress with the lowest values recorded in the severe deficit irrigation (SDI) treatment. At 160 days after transplanting (DAT), the percentage of total dry biomass reduction caused by irrigation level was lower in B. x buttiana ‘Rosenka’ compared with B. glabra var. Sanderiana and B. ‘Lindleyana’ (=B. ‘Aurantiaca’). At 160 DAT, the flower index increased in response to an increase in water stress with the highest values recorded under both moderate deficit irrigation (MDI) and SDI for B. x buttiana ‘Rosenka’. The biomass water use efficiency (WUE) increased under water stress conditions with the highest values recorded in B. glabra var. Sanderiana and B. x buttiana ‘Rosenka’ grown under MDI (average 1.43 and 1.25 g•L L 1 , respectively) and especially with SDI (average 1.68 and 1.36 g•L L 1 , respectively). A number of tolerance mechanisms such as increase in stomatal resistance, decrease in leaf water potential, and decrease in leaf osmotic potential have been observed, especially under SDI. The MDI treatment can be used successfully in Bougainvillea to reduce water consumption while improving the overall quality and WUE, whereas the genotypes B. glabra var. Sanderiana and B. x buttiana ‘Rosenka’ could be considered suitable for pot plant production.
Annals of Microbiology, 2012
We investigated the effect of residual salts from the previous summer's irrigation on two non-irr... more We investigated the effect of residual salts from the previous summer's irrigation on two non-irrigated cover crops-broad bean and common vetch-and on their rhizobial symbiontics. Before sowing, seeds were inoculated with a salt-tolerant strain and a salt-sensitive strain of Rhizobium leguminosarum biovar viciae. An increase in the electrical conductivity of the saturated-soil extract from 2.0 dS m −1 to 6.0 dS m −1 caused a severe reduction of broad bean biomass, while growth of common vetch was almost unaffected by the salinity level. Our results clearly indicate that common vetch as a cover crop may increase the availability of nitrogen in soil more than broad bean also in saline environments. A high ability of both inoculated strains to nodulate Vicia plants was observed under controlled conditions. In contrast, inoculated strains were not able to nodulate plants in salinized soils, showing lower competitiveness compared to natural rhizobial population. Indeed, the new isolates from nodules were salt-sensitive when tested in vitro. The complex interaction among bacteria, plant and soil determined the survival of endogenous salt sensitive rhizobial strains and limited the success of inoculation with exogenous salt resistant rhizobia.
Functional Plant Biology, 2012
Physiologia Plantarum, 2000
Plants have evolved complex mechanisms to perceive environmental cues and develop appropriate and... more Plants have evolved complex mechanisms to perceive environmental cues and develop appropriate and coordinated responses to abiotic and biotic stresses. Considerable progress has been made towards a better understanding of the molecular mechanisms of plant response to a single stress. However, the existence of cross-tolerance to different stressors has proved to have great relevance in the control and regulation of organismal adaptation. Evidence for the involvement of the signal peptide systemin and jasmonic acid in wound-induced salt stress adaptation in tomato has been provided. To further unravel the functional link between plant responses to salt stress and mechanical damage, transgenic tomato (Lycopersicon esculentum Mill.) plants constitutively expressing the prosystemin cDNA have been exposed to a moderate salt stress. Prosystemin over-expression caused a reduction in stomatal conductance. However, in response to salt stress, prosystemin transgenic plants maintained a higher stomatal conductance compared with the wild-type control. Leaf concentrations of abscissic acid (ABA) and proline were lower in stressed transgenic plants compared with their wild-type control, implying that either the former perceived a less stressful environment or they adapted more efficiently to it. Consistently, under salt stress, transgenic plants produced a higher biomass, indicating that a constitutive activation of wound responses is advantageous in saline environment. Comparative gene expression profiling of stress-induced genes suggested that the partial stomatal closure was not mediated by ABA and/or components of the ABA signal transduction pathway. Possible cross-talks between genes involved in wounding and osmotic stress adaptation pathways in tomato are discussed. † Present address:
Food Chemistry
ABSTRACT In this work the profile of primary metabolites in potato (Solanum tuberosum L., cultiva... more ABSTRACT In this work the profile of primary metabolites in potato (Solanum tuberosum L., cultivar Agria) grown under organic vs traditional farming system was studied, and the influence of heat processing (for producing potato powder) on nutritionally important compounds such as essential amino acids, proteins and carbohydrates was evaluated. The potato powder was obtained by means of a drum dryer using different process parameters (temperature, time and product thickness) to minimise thermal damage on the final product. The effects of these different processes were evaluated by analysing also some other quality indicators, as final moisture, colour of the powder, and rheological properties of the rehydrated puree. Moreover, because of its potential cancerogenity and genotoxicity, acrylamide content was determined in the potato powder obtained and compared with that of its main precursors (asparagine and reducing sugars). The steam pressure of 0.2 MPa and 2 r.p.m. allowed to obtain potato powder with a lower acrylamide contents and still a very low water content that caused no microbiological safety problems. This powder, both from conventional and organic farming, when rehydrated, resulted in purees with minimal nutritional losses and colour and consistency very similar to the fresh ones.
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Papers by Stefania De Pascale
http://www.sciencedirect.com/science/article/pii/S0308814611013057
http://www.sciencedirect.com/science/article/pii/S0308814611013057