A5021324260- Phytoplasmas and Hemiptera pathogens
- Cocoa and Sweet Potato Agronomy
- Edible Oils Quality and Analysis
- Essential Oils and Antimicrobial Activity
- Phytochemicals and Antioxidant Activities
- Horticultural and Viticultural Research
- Plant-Microbe Interactions and Immunity
- Plant Pathogenic Bacteria Studies
- Phytochemical compounds biological activities
- Climate change impacts on agriculture
- Crop Yield and Soil Fertility
- Insect symbiosis and bacterial influences
- Plant Gene Expression Analysis
- Plant biochemistry and biosynthesis
- Cholinesterase and Neurodegenerative Diseases
- Pineapple and bromelain studies
- Plant Surface Properties and Treatments
- Plant Pathogens and Fungal Diseases
- Traditional Chinese Medicine Analysis
- Plant responses to elevated CO2
- Antioxidant Activity and Oxidative Stress
- Fermentation and Sensory Analysis
- Ginseng Biological Effects and Applications
University of Salento
2017-2022
Olive leaf extracts are of special interest due to their proven therapeutic effects. However, they still considered a by-product the table olive and oil industries. In order learn possible ways exploiting this waste for health purposes, we investigated phytochemical profiles antioxidant activities in leaves 15 Italian Olea europaea L. cultivars grown same pedoclimatic conditions. The phenolic amounts seven representative compounds were analyzed using HPLC ESI/MS-TOF. determined three...
Xylella fastidiosa subsp. pauca (Xfp) , strain CoDiRO, infects a broad range of olive ( Olea europaea L.) cultivars. The profile phenolic compounds, progression leaf scorch symptoms and population density X. were analyzed in response to Xfp infection, four cultivars (Cellina di Nardo, Ogliarola Lecce, Frantoio Leccino). Differences multiplication xylem tissues estimated using qPCR assays, showing that cvs. Cellina Nardo Lecce characterized by fewer threshold cycles than for Leccino....
In the last years, interest in Italian monovarietal oils has increased due to their specific organoleptic qualities. Extra virgin olive (EVOOs) are rich phenolic compounds, secondary metabolites well known and studied for nutraceutical properties. However, among EVOOs, there is great variability composition origin, production technique, mainly, genotype. The aim of this work was evaluate different profiles antioxidant activities oils. results confirm variability. fact, overall content...
In olive trees, Xylella fastidiosa colonizes xylem vessels and compromises water transport causing the quick decline syndrome (OQDS). The loss of hydraulic conductivity could be attributed to vessel occlusions induced both by bacteria biofilm plant responses (tyloses, gums, etc.) that trigger embolism. ability infected plants detect embolism respond, activating mechanisms restore conductivity, can influence severity disease symptomatology. order investigate these in X. fastidiosa-resistant...
The purpose of this research was to investigate phytochemical profiles and antioxidant activity in four Salvia species growing Salento (Southern Italy).The hydrodistillation products obtained from the aerial parts clandestina, fruticosa, officinalis sclarea were characterized by GC-MS 50 compounds detected.With exception S. that did not produce essential oils, other shared different amounts monoterpenes oxygenated (camphor 2.13%-9.16%)and sesquiterpenes hydrocarbons (caryophyllene...
Climate change will inevitably affect agriculture. Simulations of the effects climate on agronomic performance (plant height, biomass dry weight, number spikes, grain harvest index, and 1000-kernel weight) nine durum wheat cultivars were performed to identify genotypes that have a greater yield potential over next 50 years. Plants grown in two Fitotron® CGR crop growth chambers: “room 2020” designed reproduce current climatic conditions (control) 2070”, simulate expected for year 2070 RCP8.5...
In the current study, chemical composition, antioxidant, α-glucosidase, α-amylase and cholinesterase inhibitory activities of wormwood rosemary essential oils were investigated. order to explain interaction constituents with enzymes, molecular docking tools used. GC/MS analyses revealed that main compounds oil eucalyptol (37.97%), followed by camphor (11.84%). Whereas β-copaene (16.22%), limonene (14.56%), (14.49%) (13.74%) represent oil. Moreover, antioxidant abilities assessed DPPH radical...
The recent outbreak of the Olive Quick Decline Syndrome (OQDS), caused by Xylella fastidiosa subsp. pauca ( Xf ), is dramatically altering ecosystem services in peninsula Salento (Apulia Region, southeastern Italy). Here we report accomplishment several exploratory missions area, resulting identification thirty paucisymptomatic or asymptomatic plants olive orchards severely affected OQDS. genetic profiles such putatively resistant (PRPs), assessed a selection ten simple sequence repeat (SSR)...
The disease outbreak of Xylella fastidiosa subsp. pauca strain CoDiRO (Complesso del Disseccamento Rapido dell’Olivo) in Salento (Apulia, South Italy) associated with severe cases olive quick decline syndrome may represent not just a new paradigm, but challenge for policy formulation and science communication plant pathology. Plant health management can be achieved by applying technocratic model, which objective is thought to directly inform policy-making, or via decisionistic inclusive...
Due to global climate change, complex combinations of stresses are expected occur, among which the interaction between pathogens and drought stress may have a significant effect on growth yield. In this study, Xylella fastidiosa (Xf)-resistant cultivar Leccino susceptible one Cellina di Nardò were subjected (a) individual stress, (b) Xf infection (c) combination both conditions. Here we report physiological response in water content leaves modulation expression level seven genes responsive...
The olive tree “Cellina di Nardò” (CdN) is one of the most widespread cultivars in Southern Italy, mainly grown Provinces Lecce, Taranto, and Brindisi over a total about 60,000 hectares. Although this cultivar used for oil production, drupes are also suitable potentially marketable as table olives. When purpose, olives harvested after complete maturation, which gives to them naturally black color due anthocyanin accumulation. This survey reports first time on phenolic content (TPC),...
Bois noir is a disease associated with the presence of phytoplasma ‘Candidatus Phytoplasma solani’ belonging to Stolbur group (subgroup 16SrXII-A), which has heavy economic impact on grapevines. This study focused changes induced by in terms profile and amount secondary metabolites synthesized phenylpropanoid pathway leaves Vitis vinifera L. red-berried cultivar Sangiovese. Metabolic alterations were assessed according progression through measurements soluble sugars, chlorophyll, phenolic...
Monitoring Xylella fastidiosa is critical for eradicating or at least containing this harmful pathogen. New low-cost and rapid methods early detection capability are very much needed. Metabolomics may play a key role in diagnosis; fact, mobile metabolites could avoid errors sampling due to erratically distributed pathogens. Of the various different signals, we studied dicarboxylic azelaic acid (AzA) which molecule biotic stress plant response but has not yet been associated with pathogens...
The outbreak of the olive quick decline syndrome caused by Xylella fastidiosa represents one main agricultural threats in Italy. Recently, thirty asymptomatic or paucisymptomatic genotypes found groves heavily compromised bacterium were identified. HPLC ESI/MS-TOF analyses on leaf petiole extract carried out to characterize metabolic profile selected genotypes. Besides uni- and multi-variate statistical methods differentiated profiles genetically related cultivars 'Leccino' 'Ciciulara', no...
We report the characterisation of Salvia clandestina L. shoots and roots aqueous extract using HPLC-ESI/MS-TOF. Among 29 compounds detected, we observed presence danshensu (3-(3,4-dihydroxy-phenyl) 2-hydroxy-propinic acid), a powerful antioxidant cardio-protective agent. The content found in S. was considerable (4.96 mg g−1 DW) if compared with previous studies on miltiorrhiza Bunge, main source this compound. also determined total phenolic concentration evaluated their activity by ABTS,...