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Berta Gonçalves - One of the best experts on this subject based on the ideXlab platform.
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Leaf morpho-physiological dynamics in Salvia officinalis L. var. purpurascens
TURKISH JOURNAL OF BOTANY, 2017Co-Authors: Filipa Martins, Ivo Oliveira, Ana I. R. N. A. Barros, Carla Amaral, Sílvia Afonso, Helena Ferreira, José Moutinho-pereira, Berta GonçalvesAbstract:Salvia officinalis L. var. purpurascens is one of the most insufficiently studied varieties of the genus Salvia. Hence, the study and characterization of this plant, as well as the monitoring of changes occurring during leaf ontogeny, are of great importance and interest. For this purpose, young and adult leaves of Salvia officinalis L. var. purpurascens collected in two different seasons and in two different years were analyzed, considering morpho-anatomical traits but also leaf gas exchange and chlorophyll a fluorescence parameters. Leaf age was found to have significant effects on several of the analyzed parameters, including the parenchyma, mesophyll, xylem, and phloem thickness, as well as transpiration rate (E) and maximum photochemical efficiency of PSII (Fv/Fm). On the other hand, considerable differences were found for several characteristics of Salvia officinalis caused by season, e.g., leaf area, vessel dimensions, stomatal conductance (gs), waxes, E, and intrinsic water-use efficiency (A/gs). The year of harvest also resulted in significant variations in several parameters, such as leaf area and leaf mass per area (LMA), and palisade and spongy parenchyma thickness. These results show the dynamics of Salvia officinalis leaf traits, presently poorly known, and are further helpful when aiming towards optimization of characteristics of cultivated sage.
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Leaf age, seasonal and annual variations in Salvia officinalis L. var. purpurascens biochemical characteristics
Journal of applied botany and food quality, 2016Co-Authors: Filipa Martins, Ivo Oliveira, Ana I. R. N. A. Barros, Carla Amaral, Sílvia Afonso, Helena Ferreira, Berta GonçalvesAbstract:Medicinal and aromatic plants (MAP’s) have gain new attention in the past years due to their content in bioactive compounds and recognized health-promoting effects. One of the most important species of MAP’s is Salvia officinalis L., rich in several phytochemicals (essential oil, phenolic compounds) and vitamins. Besides, it has various uses and pharmacological effects (including antibacterial, antiviral, antioxidative, anti-inflammatory, antidiabetic and antitumour activities). Salvia officinalis L. has many cultivars, including Salvia officinalis L. var. purpurascens , which is currently understudied. As few is known about this specific cultivar, characterization of this plant, as well as the study of biochemical variations occurring during its development, is of great significance. Hence, in this work, young and adult leaves of Salvia officinalis L. var. purpurascens , were collected in two different seasons (June and September) and in two different years (2011 and 2013). Several biochemical traits were analyzed, namely carbohydrate content, photosynthetic pigments concentration, total phenolics, soluble proteins, as well as oxidation parameters (thiobarbituric acid reactive substances, thiols and electrolyte leakage). The Year factor significantly influenced carbohydrate content (higher in 2013 for non-structural carbohydrates and soluble sugars, but lower for starch), but also chlorophyll and carotenoid content (higher in 2011), with a similar influence recorded for the Season of harvest (higher values for starch, chlorophyll and carotenoids in September, but lower for soluble sugars). The developmental stage of leaves showed significant influence mainly in the content of photosynthetic pigments, with higher values of chlorophyll and carotenoids recorded in young leaves. The results show the biochemical variations occurring in plants of Salvia officinalis L. var. purpurascens , during developmental stages, and others associated to season of harvest and year, and their relation to climatic factors. The gathered data, besides useful for the characterization of this plant, is also valuable when aiming for the optimization of sage cultivation.
Filipa Martins - One of the best experts on this subject based on the ideXlab platform.
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Leaf morpho-physiological dynamics in Salvia officinalis L. var. purpurascens
TURKISH JOURNAL OF BOTANY, 2017Co-Authors: Filipa Martins, Ivo Oliveira, Ana I. R. N. A. Barros, Carla Amaral, Sílvia Afonso, Helena Ferreira, José Moutinho-pereira, Berta GonçalvesAbstract:Salvia officinalis L. var. purpurascens is one of the most insufficiently studied varieties of the genus Salvia. Hence, the study and characterization of this plant, as well as the monitoring of changes occurring during leaf ontogeny, are of great importance and interest. For this purpose, young and adult leaves of Salvia officinalis L. var. purpurascens collected in two different seasons and in two different years were analyzed, considering morpho-anatomical traits but also leaf gas exchange and chlorophyll a fluorescence parameters. Leaf age was found to have significant effects on several of the analyzed parameters, including the parenchyma, mesophyll, xylem, and phloem thickness, as well as transpiration rate (E) and maximum photochemical efficiency of PSII (Fv/Fm). On the other hand, considerable differences were found for several characteristics of Salvia officinalis caused by season, e.g., leaf area, vessel dimensions, stomatal conductance (gs), waxes, E, and intrinsic water-use efficiency (A/gs). The year of harvest also resulted in significant variations in several parameters, such as leaf area and leaf mass per area (LMA), and palisade and spongy parenchyma thickness. These results show the dynamics of Salvia officinalis leaf traits, presently poorly known, and are further helpful when aiming towards optimization of characteristics of cultivated sage.
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Leaf age, seasonal and annual variations in Salvia officinalis L. var. purpurascens biochemical characteristics
Journal of applied botany and food quality, 2016Co-Authors: Filipa Martins, Ivo Oliveira, Ana I. R. N. A. Barros, Carla Amaral, Sílvia Afonso, Helena Ferreira, Berta GonçalvesAbstract:Medicinal and aromatic plants (MAP’s) have gain new attention in the past years due to their content in bioactive compounds and recognized health-promoting effects. One of the most important species of MAP’s is Salvia officinalis L., rich in several phytochemicals (essential oil, phenolic compounds) and vitamins. Besides, it has various uses and pharmacological effects (including antibacterial, antiviral, antioxidative, anti-inflammatory, antidiabetic and antitumour activities). Salvia officinalis L. has many cultivars, including Salvia officinalis L. var. purpurascens , which is currently understudied. As few is known about this specific cultivar, characterization of this plant, as well as the study of biochemical variations occurring during its development, is of great significance. Hence, in this work, young and adult leaves of Salvia officinalis L. var. purpurascens , were collected in two different seasons (June and September) and in two different years (2011 and 2013). Several biochemical traits were analyzed, namely carbohydrate content, photosynthetic pigments concentration, total phenolics, soluble proteins, as well as oxidation parameters (thiobarbituric acid reactive substances, thiols and electrolyte leakage). The Year factor significantly influenced carbohydrate content (higher in 2013 for non-structural carbohydrates and soluble sugars, but lower for starch), but also chlorophyll and carotenoid content (higher in 2011), with a similar influence recorded for the Season of harvest (higher values for starch, chlorophyll and carotenoids in September, but lower for soluble sugars). The developmental stage of leaves showed significant influence mainly in the content of photosynthetic pigments, with higher values of chlorophyll and carotenoids recorded in young leaves. The results show the biochemical variations occurring in plants of Salvia officinalis L. var. purpurascens , during developmental stages, and others associated to season of harvest and year, and their relation to climatic factors. The gathered data, besides useful for the characterization of this plant, is also valuable when aiming for the optimization of sage cultivation.
Bruce M Smallfield - One of the best experts on this subject based on the ideXlab platform.
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essential oils from dalmatian sage Salvia officinalis l variations among individuals plant parts seasons and sites
Journal of Agricultural and Food Chemistry, 1999Co-Authors: Nigel B Perry, Rosemary E Anderson, Nerida J Brennan, M H Douglas, Anna J Heaney, Jennifer A Mcgimpsey, Bruce M SmallfieldAbstract:The factors affecting oil yield and quality of essential oils from Dalmatian sage (Salvia officinalis L.) are analyzed. Distillations of oils from individual plants and GC analyses revealed the presence of three chemotypes with different proportions of α- and β-thujone (α/β 10:1, 1.5:1, and 1:10). Different accessions could also be classified as having high (39−44%), medium (22−28%), or low (9%) total thujone contents. Flowering parts of S. officinalis had higher oil contents (1.6 versus 1.1%) and β-pinene levels (27 versus 10%) than leaves and lower thujone levels (16 versus 31%). Major seasonal changes were found in the composition of oil distilled from a flowering type of Dalmatian sage, but oil yields from healthy, established plants did not vary greatly. Total thujone levels were lowest (25%) around flowering in spring and summer, so autumn or winter was the best harvest time to obtain oils with high thujone levels. Keywords: Dalmatian sage; Salvia officinalis; essential oil; variation; thujones
Mingfu Wang - One of the best experts on this subject based on the ideXlab platform.
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Antioxidative phenolic glycosides from sage (Salvia officinalis).
Journal of natural products, 1999Co-Authors: Mingfu Wang, Meera Rangarajan, Yu Shao, Nanqun Zhu, Edmond J. LavoieAbstract:An investigation of Salvia officinalis L. has led to the isolation of three new phenolic glycosides, 6-O-caffeoyl-β-d-fructofuranosyl-(2→1)-α-d-glucopyranoside (1), 1-O-caffeoyl-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside (2), and 1-O-p-hydroxybenzoyl-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside (3). Elucidation of the structures of 1−3 was based on the interpretation of FABMS and 1D and 2D NMR spectra. Compounds 1 and 2 were found to be moderately active as antioxidants in the DPPH test and metmyoglobin test.
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Antioxidative Phenolic Compounds from Sage (Salvia officinalis)
Journal of Agricultural and Food Chemistry, 1998Co-Authors: Mingfu Wang, Meera Rangarajan, Yu Shao, Edmond J. Lavoie, Tzou-chi HuangAbstract:Ten phenolic compounds were isolated from a butanol fraction of sage extracts. Their structures were determined by spectral methods (NMR, MS, IR). Among them, a novel compound, 4-hydroxyacetophenone-4-O-β-d-apiofuranosyl-(1→6)-O-β-d-glucopyranoside, was identified. Two test systems, DPPH free radical scavenging activity and radical cation ABTS•+ scavenging activity, were used to evaluate their antioxidant activity. The most active compounds were found to be rosmarinic acid and luteolin-7-O-β-glucopyranoside. Keywords: Sage; Salvia officinalis; phenolic compounds; antioxidant activity
Ivo Oliveira - One of the best experts on this subject based on the ideXlab platform.
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Leaf morpho-physiological dynamics in Salvia officinalis L. var. purpurascens
TURKISH JOURNAL OF BOTANY, 2017Co-Authors: Filipa Martins, Ivo Oliveira, Ana I. R. N. A. Barros, Carla Amaral, Sílvia Afonso, Helena Ferreira, José Moutinho-pereira, Berta GonçalvesAbstract:Salvia officinalis L. var. purpurascens is one of the most insufficiently studied varieties of the genus Salvia. Hence, the study and characterization of this plant, as well as the monitoring of changes occurring during leaf ontogeny, are of great importance and interest. For this purpose, young and adult leaves of Salvia officinalis L. var. purpurascens collected in two different seasons and in two different years were analyzed, considering morpho-anatomical traits but also leaf gas exchange and chlorophyll a fluorescence parameters. Leaf age was found to have significant effects on several of the analyzed parameters, including the parenchyma, mesophyll, xylem, and phloem thickness, as well as transpiration rate (E) and maximum photochemical efficiency of PSII (Fv/Fm). On the other hand, considerable differences were found for several characteristics of Salvia officinalis caused by season, e.g., leaf area, vessel dimensions, stomatal conductance (gs), waxes, E, and intrinsic water-use efficiency (A/gs). The year of harvest also resulted in significant variations in several parameters, such as leaf area and leaf mass per area (LMA), and palisade and spongy parenchyma thickness. These results show the dynamics of Salvia officinalis leaf traits, presently poorly known, and are further helpful when aiming towards optimization of characteristics of cultivated sage.
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Leaf age, seasonal and annual variations in Salvia officinalis L. var. purpurascens biochemical characteristics
Journal of applied botany and food quality, 2016Co-Authors: Filipa Martins, Ivo Oliveira, Ana I. R. N. A. Barros, Carla Amaral, Sílvia Afonso, Helena Ferreira, Berta GonçalvesAbstract:Medicinal and aromatic plants (MAP’s) have gain new attention in the past years due to their content in bioactive compounds and recognized health-promoting effects. One of the most important species of MAP’s is Salvia officinalis L., rich in several phytochemicals (essential oil, phenolic compounds) and vitamins. Besides, it has various uses and pharmacological effects (including antibacterial, antiviral, antioxidative, anti-inflammatory, antidiabetic and antitumour activities). Salvia officinalis L. has many cultivars, including Salvia officinalis L. var. purpurascens , which is currently understudied. As few is known about this specific cultivar, characterization of this plant, as well as the study of biochemical variations occurring during its development, is of great significance. Hence, in this work, young and adult leaves of Salvia officinalis L. var. purpurascens , were collected in two different seasons (June and September) and in two different years (2011 and 2013). Several biochemical traits were analyzed, namely carbohydrate content, photosynthetic pigments concentration, total phenolics, soluble proteins, as well as oxidation parameters (thiobarbituric acid reactive substances, thiols and electrolyte leakage). The Year factor significantly influenced carbohydrate content (higher in 2013 for non-structural carbohydrates and soluble sugars, but lower for starch), but also chlorophyll and carotenoid content (higher in 2011), with a similar influence recorded for the Season of harvest (higher values for starch, chlorophyll and carotenoids in September, but lower for soluble sugars). The developmental stage of leaves showed significant influence mainly in the content of photosynthetic pigments, with higher values of chlorophyll and carotenoids recorded in young leaves. The results show the biochemical variations occurring in plants of Salvia officinalis L. var. purpurascens , during developmental stages, and others associated to season of harvest and year, and their relation to climatic factors. The gathered data, besides useful for the characterization of this plant, is also valuable when aiming for the optimization of sage cultivation.
