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Prof. Lucia Guidi
Department of Agricutlure, Food and Environment, University of Pisa

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0 Food Quality
0 Photosynthesis
0 secondary metabolites
0 nutraceutical
0 Chlorophyll a fluorescence

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Chlorophyll a fluorescence
Photosynthesis
nutraceutical
secondary metabolites
Abiotic stress

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Letter
Published: 27 August 2021 in New Phytologist
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ACS Style

Giovanni Agati; Lucia Guidi; Marco Landi; Massimiliano Tattini. Anthocyanins in photoprotection: knowing the actors in play to solve this complex ecophysiological issue. New Phytologist 2021, 1 .

AMA Style

Giovanni Agati, Lucia Guidi, Marco Landi, Massimiliano Tattini. Anthocyanins in photoprotection: knowing the actors in play to solve this complex ecophysiological issue. New Phytologist. 2021; ():1.

Chicago/Turabian Style

Giovanni Agati; Lucia Guidi; Marco Landi; Massimiliano Tattini. 2021. "Anthocyanins in photoprotection: knowing the actors in play to solve this complex ecophysiological issue." New Phytologist , no. : 1.

Journal article
Published: 02 August 2021 in International Journal of Molecular Sciences
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Carotenoids and phenylpropanoids play a dual role of limiting and countering photooxidative stress. We hypothesize that their “antioxidant” function is prominent in plants exposed to summer drought, when climatic conditions exacerbate the light stress. To test this, we conducted a field study on Phillyrea latifolia, a Mediterranean evergreen shrub, carrying out daily physiological and biochemical analyses in spring and summer. We also investigated the functional role of the major phenylpropanoids in different leaf tissues. Summer leaves underwent the most severe drought stress concomitantly with a reduction in radiation use efficiency upon being exposed to intense photooxidative stress, particularly during the central hours of the day. In parallel, a significant daily variation in both carotenoids and phenylpropanoids was observed. Our data suggest that the morning-to-midday increase in zeaxanthin derived from the hydroxylation of ß-carotene to sustain non-photochemical quenching and limit lipid peroxidation in thylakoid membranes. We observed substantial spring-to-summer and morning-to-midday increases in quercetin and luteolin derivatives, mostly in the leaf mesophyll. These findings highlight their importance as antioxidants, countering the drought-induced photooxidative stress. We concluded that seasonal and daily changes in photosynthetic and non-photosynthetic pigments may allow P. latifolia leaves to avoid irreversible photodamage and to cope successfully with the Mediterranean harsh climate.

ACS Style

Antonella Gori; Cecilia Brunetti; Luana Dos Santos Nascimento; Giovanni Marino; Lucia Guidi; Francesco Ferrini; Mauro Centritto; Alessio Fini; Massimiliano Tattini. Photoprotective Role of Photosynthetic and Non-Photosynthetic Pigments in Phillyrea latifolia: Is Their “Antioxidant” Function Prominent in Leaves Exposed to Severe Summer Drought? International Journal of Molecular Sciences 2021, 22, 8303 .

AMA Style

Antonella Gori, Cecilia Brunetti, Luana Dos Santos Nascimento, Giovanni Marino, Lucia Guidi, Francesco Ferrini, Mauro Centritto, Alessio Fini, Massimiliano Tattini. Photoprotective Role of Photosynthetic and Non-Photosynthetic Pigments in Phillyrea latifolia: Is Their “Antioxidant” Function Prominent in Leaves Exposed to Severe Summer Drought? International Journal of Molecular Sciences. 2021; 22 (15):8303.

Chicago/Turabian Style

Antonella Gori; Cecilia Brunetti; Luana Dos Santos Nascimento; Giovanni Marino; Lucia Guidi; Francesco Ferrini; Mauro Centritto; Alessio Fini; Massimiliano Tattini. 2021. "Photoprotective Role of Photosynthetic and Non-Photosynthetic Pigments in Phillyrea latifolia: Is Their “Antioxidant” Function Prominent in Leaves Exposed to Severe Summer Drought?" International Journal of Molecular Sciences 22, no. 15: 8303.

Editorial
Published: 27 May 2021 in Antioxidants
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Plants have been challenged against oxidative stress since their appearance on land

ACS Style

Lucia Guidi; Massimiliano Tattini. Antioxidant Defenses in Plants: A Dated Topic of Current Interest. Antioxidants 2021, 10, 855 .

AMA Style

Lucia Guidi, Massimiliano Tattini. Antioxidant Defenses in Plants: A Dated Topic of Current Interest. Antioxidants. 2021; 10 (6):855.

Chicago/Turabian Style

Lucia Guidi; Massimiliano Tattini. 2021. "Antioxidant Defenses in Plants: A Dated Topic of Current Interest." Antioxidants 10, no. 6: 855.

Research article
Published: 22 January 2021 in Journal of Agricultural and Food Chemistry
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The occurrence of anthocyanin (ACN) and metal (Me) complexes has been widely supported by many research works while the possibility that ACNs bind to metalloids (Mds) is yet to be proven. Here, metalloids (H3BO3 for B; GeO2 for Ge) were added to cyanidin-based solutions at pH 5, 6, and 7 and ACN–Md stoichiometric ratios of 1:1, 1:10, 1:100, and 1:500, and UV–vis transmittance spectroscopy as well as density functional theory (DFT) calculations were performed to test this hypothesis. Ge and B addition caused bathochromic and hyperchromic shifts on ACN UV–vis spectra, particularly pronounced at pH 5 and a 1:500 (ACN:Md) ratio. ACN–Me complexation reactions have been evaluated where Ge showed a higher capability to bind to ACNs than B. Among the complexes envisioned, those labeled as b1, b2, and b3 feature UV–vis spectra compatible with experiments. The combination of experimental and computational data offers for the first time evidence of the formation of ACN–Md complexes.

ACS Style

Laura Estévez; Marta Queizán; Ricardo A. Mosquera; Lucia Guidi; Ermes Lo Piccolo; Marco Landi. First Characterization of the Formation of Anthocyanin–Ge and Anthocyanin–B Complexes through UV–Vis Spectroscopy and Density Functional Theory Quantum Chemical Calculations. Journal of Agricultural and Food Chemistry 2021, 69, 1272 -1282.

AMA Style

Laura Estévez, Marta Queizán, Ricardo A. Mosquera, Lucia Guidi, Ermes Lo Piccolo, Marco Landi. First Characterization of the Formation of Anthocyanin–Ge and Anthocyanin–B Complexes through UV–Vis Spectroscopy and Density Functional Theory Quantum Chemical Calculations. Journal of Agricultural and Food Chemistry. 2021; 69 (4):1272-1282.

Chicago/Turabian Style

Laura Estévez; Marta Queizán; Ricardo A. Mosquera; Lucia Guidi; Ermes Lo Piccolo; Marco Landi. 2021. "First Characterization of the Formation of Anthocyanin–Ge and Anthocyanin–B Complexes through UV–Vis Spectroscopy and Density Functional Theory Quantum Chemical Calculations." Journal of Agricultural and Food Chemistry 69, no. 4: 1272-1282.

Journal article
Published: 19 January 2021 in Horticulturae
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Stinging nettle (Urtica dioica) is a plant well known in traditional medicine for its many beneficial properties, but the lack of standardization regarding the product to offer to consumers limits its diffusion. To this end, drying appears to be a useful technique to offer a low-cost product that can be stored for long time, but the different drying procedures may give rise to end-products of very different quality as nutraceutical and antioxidant compounds. Nettle leaves have been dehydrated employing freeze-drying (FD), oven-drying (OD) or heat pump drying (HPD) and compared with fresh leaves following water extraction to emulate the use by final consumers. Results indicate that the best dehydration technique is HPD, which apparently gives rise to more than a doubling of total phenols and antioxidant activity in the extract compared to the water extract obtained from fresh leaves but a reduction in the level of ascorbic acid of about 39%. In addition, the content of some phenolic compounds is 10 to over a hundred times higher in the extract after HPD than that obtained from fresh samples. This confirms that the dehydration technique should be tuned in relation to the compounds of greatest interest or value.

ACS Style

Leani Martìnez Garcìa; Costanza Ceccanti; Carmine Negro; Luigi De Bellis; Luca Incrocci; Alberto Pardossi; Lucia Guidi. Effect of Drying Methods on Phenolic Compounds and Antioxidant Activity of Urtica dioica L. Leaves. Horticulturae 2021, 7, 10 .

AMA Style

Leani Martìnez Garcìa, Costanza Ceccanti, Carmine Negro, Luigi De Bellis, Luca Incrocci, Alberto Pardossi, Lucia Guidi. Effect of Drying Methods on Phenolic Compounds and Antioxidant Activity of Urtica dioica L. Leaves. Horticulturae. 2021; 7 (1):10.

Chicago/Turabian Style

Leani Martìnez Garcìa; Costanza Ceccanti; Carmine Negro; Luigi De Bellis; Luca Incrocci; Alberto Pardossi; Lucia Guidi. 2021. "Effect of Drying Methods on Phenolic Compounds and Antioxidant Activity of Urtica dioica L. Leaves." Horticulturae 7, no. 1: 10.

Review
Published: 16 December 2020 in Horticulturae
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The growth of agricultural mechanization has promoted an increase in raspberry production, and for this reason, the best postharvest storage and processing techniques capable of maintaining the health beneficial properties of these perishable berry fruits have been widely studied. Indeed, raspberries are a rich source of bioactive chemical compounds (e.g., ellagitannins, anthocyanins, and ascorbic acid), but these can be altered by postharvest storage and processing techniques before consumption. Although there are clear differences in storage times and techniques, the content of bioactive chemical compounds is relatively stable with some minor changes in ascorbic acid or anthocyanin content during cold (5 °C) or frozen storage. In the literature, processing techniques such as juicing or drying have negatively affected the content of bioactive chemical compounds. Among drying techniques, hot air (oven) drying is the process that alters the content of bioactive chemical compounds the most. For this reason, new drying technologies such as microwave and heat pumps have been developed. These novel techniques are more successful in retaining bioactive chemical compounds with respect to conventional hot air drying. This mini-review surveys recent literature concerning the effects of postharvest storage and processing techniques on raspberry bioactive chemical compound content.

ACS Style

Ermes Piccolo; Leani Martìnez Garcìa; Marco Landi; Lucia Guidi; Rossano Massai; Damiano Remorini. Influences of Postharvest Storage and Processing Techniques on Antioxidant and Nutraceutical Properties of Rubus idaeus L.: A Mini-Review. Horticulturae 2020, 6, 105 .

AMA Style

Ermes Piccolo, Leani Martìnez Garcìa, Marco Landi, Lucia Guidi, Rossano Massai, Damiano Remorini. Influences of Postharvest Storage and Processing Techniques on Antioxidant and Nutraceutical Properties of Rubus idaeus L.: A Mini-Review. Horticulturae. 2020; 6 (4):105.

Chicago/Turabian Style

Ermes Piccolo; Leani Martìnez Garcìa; Marco Landi; Lucia Guidi; Rossano Massai; Damiano Remorini. 2020. "Influences of Postharvest Storage and Processing Techniques on Antioxidant and Nutraceutical Properties of Rubus idaeus L.: A Mini-Review." Horticulturae 6, no. 4: 105.

Review
Published: 09 November 2020 in Antioxidants
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Whether flavonoids play significant antioxidant roles in plants challenged by photooxidative stress of different origin has been largely debated over the last few decades. A critical review of the pertinent literature and our experimentation as well, based on a free-of-scale approach, support an important antioxidant function served by flavonoids in plants exposed to a wide range of environmental stressors, the significance of which increases with the severity of stress. On the other side, some questions need conclusive answers when the putative antioxidant functions of plant flavonoids are examined at the level of both the whole-cell and cellular organelles. This partly depends upon a conclusive, robust, and unbiased definition of “a plant antioxidant”, which is still missing, and the need of considering the subcellular re-organization that occurs in plant cells in response to severe stress conditions. This likely makes our deterministic-based approach unsuitable to unveil the relevance of flavonoids as antioxidants in extremely complex biological systems, such as a plant cell exposed to an ever-changing stressful environment. This still poses open questions about how to measure the occurred antioxidant action of flavonoids. Our reasoning also evidences the need of contemporarily evaluating the changes in key primary and secondary components of the antioxidant defense network imposed by stress events of increasing severity to properly estimate the relevance of the antioxidant functions of flavonoids in an in planta situation. In turn, this calls for an in-depth analysis of the sub-cellular distribution of primary and secondary antioxidants to solve this still intricate matter.

ACS Style

Giovanni Agati; Cecilia Brunetti; Alessio Fini; Antonella Gori; Lucia Guidi; Marco Landi; Federico Sebastiani; Massimiliano Tattini. Are Flavonoids Effective Antioxidants in Plants? Twenty Years of Our Investigation. Antioxidants 2020, 9, 1098 .

AMA Style

Giovanni Agati, Cecilia Brunetti, Alessio Fini, Antonella Gori, Lucia Guidi, Marco Landi, Federico Sebastiani, Massimiliano Tattini. Are Flavonoids Effective Antioxidants in Plants? Twenty Years of Our Investigation. Antioxidants. 2020; 9 (11):1098.

Chicago/Turabian Style

Giovanni Agati; Cecilia Brunetti; Alessio Fini; Antonella Gori; Lucia Guidi; Marco Landi; Federico Sebastiani; Massimiliano Tattini. 2020. "Are Flavonoids Effective Antioxidants in Plants? Twenty Years of Our Investigation." Antioxidants 9, no. 11: 1098.

Journal article
Published: 13 September 2020 in Food Chemistry
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This study is aimed to comparatively investigate the phytochemical profiles, focusing on the nutritional and phytochemical properties of common garlic (Allium sativum L.; CG) and elephant garlic (EG) (Allium ampeloprasum var. holmense) collected from the Val di Chiana area (Tuscany, Italy). The results showed a lower amount of fibers, demonstrating a higher digestibility of the bulb, and sulfur-containing compounds in EG rather than in CG. Untargeted metabolomic profiling followed by supervised and unsupervised statistics allowed understanding the differences in phytochemical composition among the two bulbs, both as raw bulbs, processed following the in vitro gastrointestinal digestion process. Typical sulfur-containing compounds, such as alliin and N-gamma-glutamyl-S-allyl cysteine, could notably be detected in lower amounts in EG. EG maintains a distinct phytochemical signature during in vitro gastrointestinal digestion. Our findings support the distinct sensorial attributes of the bulbs.

ACS Style

Costanza Ceccanti; Gabriele Rocchetti; Luigi Lucini; Gianluca Giuberti; Marco Landi; Stefano Biagiotti; Lucia Guidi. Comparative phytochemical profile of the elephant garlic (Allium ampeloprasum var. holmense) and the common garlic (Allium sativum) from the Val di Chiana area (Tuscany, Italy) before and after in vitro gastrointestinal digestion. Food Chemistry 2020, 338, 128011 .

AMA Style

Costanza Ceccanti, Gabriele Rocchetti, Luigi Lucini, Gianluca Giuberti, Marco Landi, Stefano Biagiotti, Lucia Guidi. Comparative phytochemical profile of the elephant garlic (Allium ampeloprasum var. holmense) and the common garlic (Allium sativum) from the Val di Chiana area (Tuscany, Italy) before and after in vitro gastrointestinal digestion. Food Chemistry. 2020; 338 ():128011.

Chicago/Turabian Style

Costanza Ceccanti; Gabriele Rocchetti; Luigi Lucini; Gianluca Giuberti; Marco Landi; Stefano Biagiotti; Lucia Guidi. 2020. "Comparative phytochemical profile of the elephant garlic (Allium ampeloprasum var. holmense) and the common garlic (Allium sativum) from the Val di Chiana area (Tuscany, Italy) before and after in vitro gastrointestinal digestion." Food Chemistry 338, no. : 128011.

Journal article
Published: 06 August 2020 in Foods
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In this study, five wild edible herbs traditionally consumed in the Tuscany region (Italy) were evaluated for their potential in human nutrition. The nutraceutical characterization of Rumex acetosa, Cichorium intybus, Picris hieracioides, Sanguisorba minor, and Plantago coronopus, as well as their sensory profile were reported. Additionally, a preliminary assessment of completely different domestication of the wild species (named “soilless”, pot, and open field) was conducted to verify the possibility of their marketability, which is impossible if the plants are only gathered as wild. The open field domestication allowed to obtain plants with nutraceutical and sensory profiles similar to those of the wild species, especially in C. intybus, P. hieracioides, and S. minor. The pot domestication allow to obtain plants with chlorophyll and carotenoid contents close to those of the wild species, as well as a lower total phenolic and flavonoid content and ascorbic acid content than wild species. In the “soilless” method, R. acetosa and P. coronopus exhibited a high quality in terms of phytochemicals and antioxidant activity. Afterward, the sensory profile was strongly affected by the domestication in terms of the palatability, except for R. acetosa and P. coronopus, which displayed Hedonic Index (HI) values close to the consumer acceptability limit (HI = 6). A sensory profile similar to that of wild species was reported in open field domestication, whereas a worse sensory profile was reported in P. hieracioides and C. intybus domesticated using the soilless method. Finally, according to the preliminary assessment carried out in this study through an analysis of the general nutraceutical properties, S. minor was shown to be the most promising species thanks to its intrinsically highest nutraceutical properties considering the marketability of wild edible herbs as “new” functional food. However, further research on the bioavailability and bioactivity tests of nutraceutical compounds present in this species are required to confirm the findings of this study.

ACS Style

Costanza Ceccanti; Marco Landi; Luca Incrocci; Alberto Pardossi; Francesca Venturi; Isabella Taglieri; Giuseppe Ferroni; Lucia Guidi. Comparison of Three Domestications and Wild-Harvested Plants for Nutraceutical Properties and Sensory Profiles in Five Wild Edible Herbs: Is Domestication Possible? Foods 2020, 9, 1065 .

AMA Style

Costanza Ceccanti, Marco Landi, Luca Incrocci, Alberto Pardossi, Francesca Venturi, Isabella Taglieri, Giuseppe Ferroni, Lucia Guidi. Comparison of Three Domestications and Wild-Harvested Plants for Nutraceutical Properties and Sensory Profiles in Five Wild Edible Herbs: Is Domestication Possible? Foods. 2020; 9 (8):1065.

Chicago/Turabian Style

Costanza Ceccanti; Marco Landi; Luca Incrocci; Alberto Pardossi; Francesca Venturi; Isabella Taglieri; Giuseppe Ferroni; Lucia Guidi. 2020. "Comparison of Three Domestications and Wild-Harvested Plants for Nutraceutical Properties and Sensory Profiles in Five Wild Edible Herbs: Is Domestication Possible?" Foods 9, no. 8: 1065.

Journal article
Published: 12 June 2020 in Agronomy
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The sustainability of current farming systems has been questioned in the last decades, especially in terms of the environmental impact and mitigation of global warming. Also, the organic sector, which is supposed to impact less on the environment than other more intensive systems, is looking for innovative solutions to improve its environmental sustainability. Promisingly, the integration of organic management practices with conservation agriculture techniques may help to increase environmental sustainability of food production. However, little is known about the possible impact of conservation agriculture on the content of bioactive compounds in cash crops. For this reason, a two-year rotation experiment used 7 cash crops (4 leafy vegetables and 3 fruit crops) to compare integrated (INT), organic farming (ORG), and organic no-tillage (ORG+) systems to evaluate the possible influence of cropping systems on the nutritional/nutraceutical values of the obtained fruits and leafy vegetables. The results pointed out specific responses based on the species as well as the year of cultivation. However, cultivation with the ORG+ cropping system resulted in effective obtainment of fruits and vegetables with higher levels of bioactive compounds in several cases (11 out 16 observations). The ORG+ cropping system results are particularly promising for leafy vegetable cultivation, especially when ORG+ is carried out on a multi-year basis. Aware that the obtained data should be consolidated with longer-term experiments, we conclude that this dataset may represent a good starting point to support conservation agriculture systems as a possible sustainable strategy to obtain products with higher levels of bioactive compounds.

ACS Style

Costanza Ceccanti; Marco Landi; Daniele Antichi; Lucia Guidi; Luigi Manfrini; Michele Monti; Giacomo Tosti; Christian Frasconi. Bioactive Properties of Fruits and Leafy Vegetables Managed with Integrated, Organic, and Organic No-Tillage Practices in the Mediterranean Area: A Two-Year Rotation Experiment. Agronomy 2020, 10, 1 .

AMA Style

Costanza Ceccanti, Marco Landi, Daniele Antichi, Lucia Guidi, Luigi Manfrini, Michele Monti, Giacomo Tosti, Christian Frasconi. Bioactive Properties of Fruits and Leafy Vegetables Managed with Integrated, Organic, and Organic No-Tillage Practices in the Mediterranean Area: A Two-Year Rotation Experiment. Agronomy. 2020; 10 (6):1.

Chicago/Turabian Style

Costanza Ceccanti; Marco Landi; Daniele Antichi; Lucia Guidi; Luigi Manfrini; Michele Monti; Giacomo Tosti; Christian Frasconi. 2020. "Bioactive Properties of Fruits and Leafy Vegetables Managed with Integrated, Organic, and Organic No-Tillage Practices in the Mediterranean Area: A Two-Year Rotation Experiment." Agronomy 10, no. 6: 1.

Journal article
Published: 08 June 2020 in Antioxidants
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Grafting is a widely utilized agronomical technique to improve yield, disease resistance, and quality of fruit and vegetables. This work aims to assess the effect of grafting and fruit ripening on the production, physico-chemical characteristics, and nutritional quality of fruit from Spanish local pepper landraces. Landraces “Cuerno,” “Sueca,” and “Valencia” were used as scions, and “NIBER®” as the rootstock. Two ripening stages of the fruits were sampled: green and red. Grafting improved the yield and marketable quality and did not negatively influence the physico-chemical and nutritional characteristics of the fruit. It was noteworthy that the bioactive compound contents and antioxidant capacity were more related to maturity stage and genotype, and red fruit had a higher antioxidant capacity than green fruit. However, in all the scions, grafting significantly enhanced lycopene content in both red and green fruit. Another important effect of grafting was the volatile compound composition evidenced by discriminant analyses, which was characterized for the first time in the fruit of these landraces. The rootstock and scion combination could be a way to improve not only the production, but also the fruit quality of peppers.

ACS Style

Ramón Gisbert-Mullor; Costanza Ceccanti; Yaiza Gara Padilla; Salvador Lopez; Ángeles Calatayud; Giuseppe Conte; Lucia Guidi. Effect of Grafting on the Production, Physico-Chemical Characteristics and Nutritional Quality of Fruit from Pepper Landraces. Antioxidants 2020, 9, 501 .

AMA Style

Ramón Gisbert-Mullor, Costanza Ceccanti, Yaiza Gara Padilla, Salvador Lopez, Ángeles Calatayud, Giuseppe Conte, Lucia Guidi. Effect of Grafting on the Production, Physico-Chemical Characteristics and Nutritional Quality of Fruit from Pepper Landraces. Antioxidants. 2020; 9 (6):501.

Chicago/Turabian Style

Ramón Gisbert-Mullor; Costanza Ceccanti; Yaiza Gara Padilla; Salvador Lopez; Ángeles Calatayud; Giuseppe Conte; Lucia Guidi. 2020. "Effect of Grafting on the Production, Physico-Chemical Characteristics and Nutritional Quality of Fruit from Pepper Landraces." Antioxidants 9, no. 6: 501.

Journal article
Published: 24 May 2020 in Scientia Horticulturae
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Two-year-old pomegranate (Punica granatum L.) plants of the commercial cultivars Wonderful (W) and Parfianka (P) were subjected for 47 days in the substrate to four salt concentrations (0, 100, 150 and 200 mM NaCl), in order to evaluate their strategies in terms of Na+/Cl− translocation and tissue/organ compartmentalization, as well as of antioxidant and osmoprotectant mechanisms. Regardless of salt concentrations, mature leaves of both cultivars accumulated high concentrations of Na+ and Cl−, showed strong decreases in PSII photochemical efficiency and finally died, suggesting that a salt-induced ion-specific toxicity occurred. Conversely, these detrimental effects occurred later and at a lower magnitude in young leaves, likely as a consequence of a Na+ and Cl− compartmentalization in mature leaves and roots. Differential responses between cultivars was, instead, observed in terms of biochemical pathways, with P plants more activating osmolyte accumulation at root and leaf level (e.g. proline, abscisic acid and carbohydrates), antioxidant system (e.g. superoxide dismutase and catalase activity) and macronutrient distribution than W plants. However, both cultivars resulted salt-tolerant, as confirmed by their ability to safeguard biomass production.

ACS Style

Antonella Calzone; Lorenzo Cotrozzi; Elisa Pellegrini; Lucia Guidi; Giacomo Lorenzini; Cristina Nali. Differential response strategies of pomegranate cultivars lead to similar tolerance to increasing salt concentrations. Scientia Horticulturae 2020, 271, 109441 .

AMA Style

Antonella Calzone, Lorenzo Cotrozzi, Elisa Pellegrini, Lucia Guidi, Giacomo Lorenzini, Cristina Nali. Differential response strategies of pomegranate cultivars lead to similar tolerance to increasing salt concentrations. Scientia Horticulturae. 2020; 271 ():109441.

Chicago/Turabian Style

Antonella Calzone; Lorenzo Cotrozzi; Elisa Pellegrini; Lucia Guidi; Giacomo Lorenzini; Cristina Nali. 2020. "Differential response strategies of pomegranate cultivars lead to similar tolerance to increasing salt concentrations." Scientia Horticulturae 271, no. : 109441.

Original article
Published: 13 January 2020 in Planta
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Salinity alters VOC profile in emitter sweet basil plants. Airborne signals by emitter plants promote earlier flowering of receivers and increase their reproductive success under salinity. Airborne signals can prime neighboring plants against pathogen and/or herbivore attacks, whilst little is known about the possibility that volatile organic compounds (VOCs) emitted by stressed plants alert neighboring plants against abiotic stressors. Salt stress (50 mM NaCl) was imposed on Ocimum basilicum L. plants (emitters, namely NaCl), and a putative alerting-priming interaction was tested on neighboring basil plants (receivers, namely NaCl-S). Compared with the receivers, the NaCl plants exhibited reduced biomass, lower photosynthesis, and changes in the VOC profile, which are common early responses of plants to salinity. In contrast, NaCl-S plants had physiological parameters similar to those of nonsalted plants (C), but exhibited a different VOC fingerprint, which overlapped, for most compounds, with that of emitters. NaCl-S plants exposed later to NaCl treatment (namely NaCl-S + NaCl) exhibited changes in the VOC profile, earlier plant senescence, earlier flowering, and higher seed yield than C + NaCl plants. This experiment offers the evidence that (1) NaCl-triggered VOCs promote metabolic changes in NaCl-S plants, which, finally, increase reproductive success and (2) the differences in VOC profiles observed between emitters and receivers subjected to salinity raise the question whether the receivers are able to "propagate" the warning signal triggered by VOCs in neighboring companions.

ACS Style

Marco Landi; Fabrizio Araniti; Guido Flamini; Ermes Lo Piccolo; Alice Trivellini; Maria Rosa Abenavoli; Lucia Guidi. “Help is in the air”: volatiles from salt-stressed plants increase the reproductive success of receivers under salinity. Planta 2020, 251, 48 -15.

AMA Style

Marco Landi, Fabrizio Araniti, Guido Flamini, Ermes Lo Piccolo, Alice Trivellini, Maria Rosa Abenavoli, Lucia Guidi. “Help is in the air”: volatiles from salt-stressed plants increase the reproductive success of receivers under salinity. Planta. 2020; 251 (2):48-15.

Chicago/Turabian Style

Marco Landi; Fabrizio Araniti; Guido Flamini; Ermes Lo Piccolo; Alice Trivellini; Maria Rosa Abenavoli; Lucia Guidi. 2020. "“Help is in the air”: volatiles from salt-stressed plants increase the reproductive success of receivers under salinity." Planta 251, no. 2: 48-15.

Journal article
Published: 09 January 2020 in Horticulturae
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Sorrel (Rumex acetosa L.) is a perennial wild herb appreciated as a folk medicine and for use in folk-traditional cuisines, and its nutraceutical properties are increasingly known and studied. Nowadays, there is a lack of knowledge about the possibility of using this species as fresh-cut produce, and no reports have investigated the physiological/biochemical changes of sorrel leaves upon storage. To test the aforementioned, sorrel seedlings were cultivated in a floating system and two consecutive harvests took place: The first cut at 15 days (C1) and second cut at 30 days (C2) after sowing. Fresh-cut sorrel leaves from C1 and C2 were stored in plastic boxes at 4 °C for 15 days and chlorophylls, carotenoids, total phenols, flavonoids, ascorbic acid, and antioxidant capacity were evaluated during the storage period. During storage, sorrel leaves from the same cut did not show significant changes in total phenolic content and antioxidant capacity, which represents a positive outcome for the maintenance of the nutraceutical value of this species. For this reason, sorrel may be a very promising species as a “new” fresh-cut leafy vegetable. However, some differences were observed between the two cuts, especially in the total flavonoid and the total ascorbic acid contents. While promising, further research will be necessary to standardize the yield and the nutraceutical content of this species in different cuts, which will be necessary to introduce and promote sorrel to consumers.

ACS Style

Costanza Ceccanti; Marco Landi; Luca Incrocci; Alberto Pardossi; Lucia Guidi. Suitability of Hydroponically-Grown Rumex acetosa L. as Fresh-Cut Produce. Horticulturae 2020, 6, 4 .

AMA Style

Costanza Ceccanti, Marco Landi, Luca Incrocci, Alberto Pardossi, Lucia Guidi. Suitability of Hydroponically-Grown Rumex acetosa L. as Fresh-Cut Produce. Horticulturae. 2020; 6 (1):4.

Chicago/Turabian Style

Costanza Ceccanti; Marco Landi; Luca Incrocci; Alberto Pardossi; Lucia Guidi. 2020. "Suitability of Hydroponically-Grown Rumex acetosa L. as Fresh-Cut Produce." Horticulturae 6, no. 1: 4.

Journal article
Published: 09 December 2019 in Antioxidants
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Wild edible plants have been used in cooking since ancient times. Recently, their value has improved as a result of the scientific evidence for their nutraceutical properties. Sanguisorba minor Scop. (salad burnet) plants were hydroponically grown and two consecutive cuts took place at 15 (C1) and 30 (C2) days after sowing. An untargeted metabolomics approach was utilized to fingerprint phenolics and other health-related compounds in this species; this approach revealed the different effects of the two cuts on the plant. S. minor showed a different and complex secondary metabolite profile, which was influenced by the cut. In fact, flavonoids increased in leaves obtained from C2, especially flavones. However, other secondary metabolites were downregulated in leaves from C2 compared to those detected in leaves from C1, as evidenced by the combination of the variable important in projections (VIP score > 1.3) and the fold-change (FC > 2). The storage of S. minor leaves for 15 days as fresh-cut products did not induce significant changes in the phenolic content and antioxidant capacity, which indicates that the nutraceutical value was maintained. The only difference evidenced during storage was that leaves obtained from C2 showed a lower constitutive content of nutraceutical compounds than leaves obtained from C1; except for chlorophylls and carotenoids. In conclusion, the cut was the main influence on the modulation of secondary metabolites in leaves, and the effects were independent of storage.

ACS Style

Costanza Ceccanti; Marco Landi; Gabriele Rocchetti; Maria Begoña Miras Moreno; Luigi Lucini; Luca Incrocci; Alberto Pardossi; Lucia Guidi. Hydroponically Grown Sanguisorba minor Scop.: Effects of Cut and Storage on Fresh-Cut Produce. Antioxidants 2019, 8, 631 .

AMA Style

Costanza Ceccanti, Marco Landi, Gabriele Rocchetti, Maria Begoña Miras Moreno, Luigi Lucini, Luca Incrocci, Alberto Pardossi, Lucia Guidi. Hydroponically Grown Sanguisorba minor Scop.: Effects of Cut and Storage on Fresh-Cut Produce. Antioxidants. 2019; 8 (12):631.

Chicago/Turabian Style

Costanza Ceccanti; Marco Landi; Gabriele Rocchetti; Maria Begoña Miras Moreno; Luigi Lucini; Luca Incrocci; Alberto Pardossi; Lucia Guidi. 2019. "Hydroponically Grown Sanguisorba minor Scop.: Effects of Cut and Storage on Fresh-Cut Produce." Antioxidants 8, no. 12: 631.

Journal article
Published: 13 May 2019 in Food Chemistry
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Ancient apple cultivars are known for their organoleptic properties over a small geographic area, but little is known of their nutraceutical properties, which might be useful in large-scale breeding programmes. Nine ancient apple cultivars from Tuscany (Italy) were characterized for their organoleptic properties, phenolic profiles, and antioxidant activities. These cultivars had high polyphenol concentrations (principally flavanols and phenolic acids) and high total antioxidant capacities compared with most commercial apple cultivars. Fruits from the cultivars ‘San Michele’ and ‘Del Debbio’ showed a good compromise between fruit size and solid soluble content, and might be suitable for fresh consumption, while fruit from ‘Benito’, ‘Della Piastra’, ‘Lugliese Grisanti’, ‘Del Sangue’ and ‘Ruggine’ had high polyphenol contents and excellent antioxidant capacities, and may be suitable for breeding programmes. ‘Ruggine’ fruit could also be used for sweet juices with good nutraceutical properties due to their high soluble solid content and high flavanol concentration.

ACS Style

Ermes Lo Piccolo; Marco Landi; Rossano Massai; Damiano Remorini; Giuseppe Conte; Lucia Guidi. Ancient apple cultivars from Garfagnana (Tuscany, Italy): A potential source for ‘nutrafruit’ production. Food Chemistry 2019, 294, 518 -525.

AMA Style

Ermes Lo Piccolo, Marco Landi, Rossano Massai, Damiano Remorini, Giuseppe Conte, Lucia Guidi. Ancient apple cultivars from Garfagnana (Tuscany, Italy): A potential source for ‘nutrafruit’ production. Food Chemistry. 2019; 294 ():518-525.

Chicago/Turabian Style

Ermes Lo Piccolo; Marco Landi; Rossano Massai; Damiano Remorini; Giuseppe Conte; Lucia Guidi. 2019. "Ancient apple cultivars from Garfagnana (Tuscany, Italy): A potential source for ‘nutrafruit’ production." Food Chemistry 294, no. : 518-525.

Journal article
Published: 07 May 2019 in Molecules
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Ancient apple cultivars usually have higher nutraceutical value than commercial ones, but in most cases their variability in pomological traits does not allow us to discriminate among them. Fruit of two Tuscany ancient apple cultivars, 'Casciana' and 'Rotella', picked from eight different orchards (four for each cultivar) were analyzed for their pomological traits, organoleptic qualities, polyphenolic profile and antiradical activity. The effectiveness of a polyphenol-based cluster analysis was compared to molecular markers (internal transcribed spacers, ITS1 and ITS2) to unequivocally discern the two apples. 'Casciana' and 'Rotella' fruit had a higher nutraceutical value than some commercial cultivars, in terms of phenolic abundance, profile and total antiradical activity. Although pedo-climatic conditions of different orchards influenced the phenolic profile of both apples, the polyphenolic discriminant analysis clearly separated the two cultivars, principally due to higher amounts of procyanidin B2, procyanidin B3 and p-coumaroylquinic acid in 'Casciana' than in 'Rotella' fruit. These three polyphenols can be used proficiently as biochemical markers for distinguishing the two apples when pomological traits cannot. Conversely, ITS1 and ITS2 polymorphism did not allow us to distinguish 'Casciana' from 'Rotella' fruit. Overall, the use of polyphenolic fingerprint might represent a valid tool to ensure the traceability of products with a high economic value.

ACS Style

Ermes Lo Piccolo; Ambra Viviani; Lucia Guidi; Damiano Remorini; Rossano Massai; Rodolfo Bernardi; Marco Landi. Discerning between Two Tuscany (Italy) Ancient Apple cultivars, 'Rotella' and 'Casciana', through Polyphenolic Fingerprint and Molecular Markers. Molecules 2019, 24, 1758 .

AMA Style

Ermes Lo Piccolo, Ambra Viviani, Lucia Guidi, Damiano Remorini, Rossano Massai, Rodolfo Bernardi, Marco Landi. Discerning between Two Tuscany (Italy) Ancient Apple cultivars, 'Rotella' and 'Casciana', through Polyphenolic Fingerprint and Molecular Markers. Molecules. 2019; 24 (9):1758.

Chicago/Turabian Style

Ermes Lo Piccolo; Ambra Viviani; Lucia Guidi; Damiano Remorini; Rossano Massai; Rodolfo Bernardi; Marco Landi. 2019. "Discerning between Two Tuscany (Italy) Ancient Apple cultivars, 'Rotella' and 'Casciana', through Polyphenolic Fingerprint and Molecular Markers." Molecules 24, no. 9: 1758.

Review article
Published: 14 February 2019 in Frontiers in Plant Science
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Chlorophyll fluorescence analysis is one of the most powerful and widely used techniques to study the effect of stresses on the photosynthetic process. From the first utilization, the Fv/Fm ratio has been largely used as a sensitive indicator of plant photosynthetic performance. Decreases of this index are indicative of the reduction of photosystem II (PSII) efficiency, namely photoinhibition. In the last 20 years, application of chlorophyll fluorescence has been largely improved, and many other informative parameters have been established to detect PSII photochemical efficiency and the partitioning of light energy to alternative dissipative mechanisms (qE, energy-dependent quenching; qZ, zeaxanthin-dependent quenching and qI, photoinhibitory quenching; qH, sustained photoprotective antenna quenching; qM, quenching dependent to chloroplast movement; qT, light harvesting complexes II–I state-transition) such as the recently developed “photoprotective power” of non-photochemical quenching (pNPQ). This review reports a brief description of the main chlorophyll fluorescence parameters and a wide analysis of the current bibliography on the use of different parameters which are useful to detect events of PSII photoinhibition. In addition, in view of the inherent differences in morpho-anatomical, physiological and biochemical features between C3 and C4 metabolism, possible differences in terms of photoinhibition between C3 and C4 plant species under stress conditions are proposed. The attempt is to highlight the limits of their comparison in terms of susceptibility to photoinhibition and to propose direction of future research which, assisted by chlorophyll fluorescence, should improve the knowledge of the different sensitivity of C3 and C4 to abiotic stressors.

ACS Style

Lucia Guidi; Ermes Lo Piccolo; Marco Landi. Chlorophyll Fluorescence, Photoinhibition and Abiotic Stress: Does it Make Any Difference the Fact to Be a C3 or C4 Species? Frontiers in Plant Science 2019, 10, 174 .

AMA Style

Lucia Guidi, Ermes Lo Piccolo, Marco Landi. Chlorophyll Fluorescence, Photoinhibition and Abiotic Stress: Does it Make Any Difference the Fact to Be a C3 or C4 Species? Frontiers in Plant Science. 2019; 10 ():174.

Chicago/Turabian Style

Lucia Guidi; Ermes Lo Piccolo; Marco Landi. 2019. "Chlorophyll Fluorescence, Photoinhibition and Abiotic Stress: Does it Make Any Difference the Fact to Be a C3 or C4 Species?" Frontiers in Plant Science 10, no. : 174.

Journal article
Published: 04 December 2018 in Science of The Total Environment
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There is a lack of knowledge about the possibility that plants facing abiotic stressors, such as drought, have an altered perception of a pulse of O3 and incur in alterations of their signalling network. This poses some concerns as to whether defensive strategy to cope episodic O3 peaks in healthy plants may fail under stress. In this study, a set of saplings of two Mediterranean deciduous species, Quercus cerris and Q. pubescens, was subjected to water withholding (20% of daily evapotranspiration for 15 days) while another set was kept well-watered. Saplings were then subjected to a pulse of O3 (200 nl l−1 for 5 h) or maintained in filtered air. Q. pubescens had a more severe decline of photosynthesis and leaf PDΨw (about −65% and 5-fold lower than in well-watered ones) and events of cell death were observed under drought when compared to Q. cerris, which is supportive for a higher sensitivity to drought exhibited by this species. When O3 was applied after drought, patterns of signalling compounds were altered in both species. Only in Q. pubescens, the typical O3-induced accumulation of apoplastic reactive oxygen species, which is the first necessary step for the activation of signalling cascade, was completely lost. In Q. cerris the most frequent changes encompassed the weakening of peaks of key signalling molecules (ethylene and salicylic acid), whereas in Q. pubescens both delayed (salicylic and jasmonic acid) or weakened (ethylene and salicylic acid) peaks were observed. This is translated to a higher ability of Q. cerris to maintain a prompt activation of defensive reaction to counteract oxidative damage due to the pollutant. Our results reveal the complexity of the signalling network in plants facing multiple stresses and highlight the need to further investigate possible alteration of defensive mechanism of tree species to predict their behavior.

ACS Style

Marco Landi; Lorenzo Cotrozzi; Elisa Pellegrini; Damiano Remorini; Mariagrazia Tonelli; Alice Trivellini; Cristina Nali; Lucia Guidi; Rossano Massai; Paolo Vernieri; Giacomo Lorenzini. When “thirsty” means “less able to activate the signalling wave trigged by a pulse of ozone”: A case of study in two Mediterranean deciduous oak species with different drought sensitivity. Science of The Total Environment 2018, 657, 379 -390.

AMA Style

Marco Landi, Lorenzo Cotrozzi, Elisa Pellegrini, Damiano Remorini, Mariagrazia Tonelli, Alice Trivellini, Cristina Nali, Lucia Guidi, Rossano Massai, Paolo Vernieri, Giacomo Lorenzini. When “thirsty” means “less able to activate the signalling wave trigged by a pulse of ozone”: A case of study in two Mediterranean deciduous oak species with different drought sensitivity. Science of The Total Environment. 2018; 657 ():379-390.

Chicago/Turabian Style

Marco Landi; Lorenzo Cotrozzi; Elisa Pellegrini; Damiano Remorini; Mariagrazia Tonelli; Alice Trivellini; Cristina Nali; Lucia Guidi; Rossano Massai; Paolo Vernieri; Giacomo Lorenzini. 2018. "When “thirsty” means “less able to activate the signalling wave trigged by a pulse of ozone”: A case of study in two Mediterranean deciduous oak species with different drought sensitivity." Science of The Total Environment 657, no. : 379-390.

Review
Published: 08 September 2018 in Molecules
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The Mediterranean basin is a biodiversity hotspot of wild edible species, and their therapeutic and culinary uses have long been documented. Owing to the growing demand for wild edible species, there are increasing concerns about the safety, standardization, quality, and availability of products derived from these species collected in the wild. An efficient cultivation method for the species having promising nutraceutical values is highly desirable. In this backdrop, a hydroponic system could be considered as a reproducible and efficient agronomic practice to maximize yield, and also to selectively stimulate the biosynthesis of targeted metabolites. The aim of this report is to review the phytochemical and toxic compounds of some potentially interesting Mediterranean wild edible species. Herein, after a deep analysis of the literature, information on the main bioactive compounds, and some possibly toxic molecules, from fifteen wild edible species have been compiled. The traditional recipes prepared with these species are also listed. In addition, preliminary data about the performance of some selected species are also reported. In particular, germination tests performed on six selected species revealed that there are differences among the species, but not with crop species. “Domestication” of wild species seems a promising approach for exploiting these “new functional foods”.

ACS Style

Costanza Ceccanti; Marco Landi; Stefano Benvenuti; Alberto Pardossi; Lucia Guidi. Mediterranean Wild Edible Plants: Weeds or “New Functional Crops”? Molecules 2018, 23, 2299 .

AMA Style

Costanza Ceccanti, Marco Landi, Stefano Benvenuti, Alberto Pardossi, Lucia Guidi. Mediterranean Wild Edible Plants: Weeds or “New Functional Crops”? Molecules. 2018; 23 (9):2299.

Chicago/Turabian Style

Costanza Ceccanti; Marco Landi; Stefano Benvenuti; Alberto Pardossi; Lucia Guidi. 2018. "Mediterranean Wild Edible Plants: Weeds or “New Functional Crops”?" Molecules 23, no. 9: 2299.