This page has only limited features, please log in for full access.

Prof. Dr. Susanne Neugart
Georg August University of Göttingen

Basic Info

Basic Info is private.

Research Keywords & Expertise

0 Brassica
0 flavonoids
0 functional food
0 sensory analysis
0 quality

Fingerprints

flavonoids
Brassica
quality

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 30 April 2021 in Molecules
Reads 0
Downloads 0

Notable parts of the population in Europe suffer from allergies towards apples. To address this health problem, the analysis of the interactions of relevant allergens with other substances such as phenolic compounds is of particular importance. The aim of this study was to evaluate the correlations between the total phenolic content (TPC), polyphenol oxidase (PPO) activity, antioxidant activity (AOA), and the phenolic compound profile and the content of the allergenic protein Mal d 1 in six apple cultivars. It was found that the PPO activity and the content of individual phenolic compounds had an influence on the Mal d 1 content. With regard to the important constituents, flavan-3-ols and phenolic acids, it was found that apples with a higher content of chlorogenic acid and a low content of procyanidin trimers and/or epicatechin had a lower allergenic potential. This is probably based on the reaction of phenolic compounds (when oxidized by the endogenous PPO) with proteins, thus being able to change the conformation of the (allergenic) proteins, which further corresponds to a loss of antibody recognition. When apples were additionally biofortified with selenium, the composition of the apples, with regard to TPC, phenolic profile, AOA, and PPO, was significantly affected. Consequently, this innovative agronomic practice seems to be promising for reducing the allergenic potential of apples.

ACS Style

Sabrina Groth; Christoph Budke; Timo Weber; Susanne Neugart; Sven Brockmann; Martina Holz; Bao Sawadski; Diemo Daum; Sascha Rohn. Relationship between Phenolic Compounds, Antioxidant Properties, and the Allergenic Protein Mal d 1 in Different Selenium-Biofortified Apple Cultivars (Malus domestica). Molecules 2021, 26, 2647 .

AMA Style

Sabrina Groth, Christoph Budke, Timo Weber, Susanne Neugart, Sven Brockmann, Martina Holz, Bao Sawadski, Diemo Daum, Sascha Rohn. Relationship between Phenolic Compounds, Antioxidant Properties, and the Allergenic Protein Mal d 1 in Different Selenium-Biofortified Apple Cultivars (Malus domestica). Molecules. 2021; 26 (9):2647.

Chicago/Turabian Style

Sabrina Groth; Christoph Budke; Timo Weber; Susanne Neugart; Sven Brockmann; Martina Holz; Bao Sawadski; Diemo Daum; Sascha Rohn. 2021. "Relationship between Phenolic Compounds, Antioxidant Properties, and the Allergenic Protein Mal d 1 in Different Selenium-Biofortified Apple Cultivars (Malus domestica)." Molecules 26, no. 9: 2647.

Original research article
Published: 28 January 2021 in Frontiers in Plant Science
Reads 0
Downloads 0

Ultraviolet-B (UV-B; 280–315 nm) radiation induces the biosynthesis of secondary plant metabolites such as flavonoids. Flavonoids could also be enhanced by blue (420–490 nm) or green (490–585 nm) light. Flavonoids act as antioxidants and shielding components in the plant’s response to UV-B exposure. They are shown to quench singlet oxygen and to be reactive to hydroxyl radical. The aim was to determine whether treatment with blue or green light can alter flavonoid profiles after pre-exposure to UV-B and whether they cause corresponding biological effects in Brassicaceae sprouts. Based on their different flavonoid profiles, three vegetables from the Brassicaceae were selected. Sprouts were treated with five subsequent doses (equals 5 days) of moderate UV-B (0.23 kJ m–2 day–1 UV-BBE), which was followed with two subsequent (equals 2 days) doses of either blue (99 μmol m–2 s–1) or green (119 μmol m–2 s–1) light. In sprouts of kale, kohlrabi, and rocket salad, flavonoid glycosides were identified by HPLC-DAD-ESI-MSn. Both Brassica oleracea species, kale and kohlrabi, showed mainly acylated quercetin and kaempferol glycosides. In contrast, in rocket salad, the main flavonol glycosides were quercetin glycosides. Blue light treatment after the UV-B treatment showed that quercetin and kaempferol glycosides were increased in the B. oleracea species kale and kohlrabi while—contrary to this—in rocket salad, there were only quercetin glycosides increased. Blue light treatment in general stabilized the enhanced concentrations of flavonoid glycosides while green treatment did not have this effect. Blue light treatment following the UV-B exposure resulted in a trend of increased singlet oxygen scavenging for kale and rocket. The hydroxyl radical scavenging capacity was independent from the light quality except for kale where an exposure with UV-B followed by a blue light treatment led to a higher hydroxyl radical scavenging capacity. These results underline the importance of different light qualities for the biosynthesis of reactive oxygen species that intercept secondary plant metabolites, but also show a pronounced species-dependent reaction, which is of special interest for growers.

ACS Style

Susanne Neugart; Petra Majer; Monika Schreiner; Éva Hideg. Blue Light Treatment but Not Green Light Treatment After Pre-exposure to UV-B Stabilizes Flavonoid Glycoside Changes and Corresponding Biological Effects in Three Different Brassicaceae Sprouts. Frontiers in Plant Science 2021, 11, 1 .

AMA Style

Susanne Neugart, Petra Majer, Monika Schreiner, Éva Hideg. Blue Light Treatment but Not Green Light Treatment After Pre-exposure to UV-B Stabilizes Flavonoid Glycoside Changes and Corresponding Biological Effects in Three Different Brassicaceae Sprouts. Frontiers in Plant Science. 2021; 11 ():1.

Chicago/Turabian Style

Susanne Neugart; Petra Majer; Monika Schreiner; Éva Hideg. 2021. "Blue Light Treatment but Not Green Light Treatment After Pre-exposure to UV-B Stabilizes Flavonoid Glycoside Changes and Corresponding Biological Effects in Three Different Brassicaceae Sprouts." Frontiers in Plant Science 11, no. : 1.

Journal article
Published: 18 January 2021 in Molecules
Reads 0
Downloads 0

Recently, there have been efforts to use ultraviolet-B radiation (UV-B) as a biotechnological tool in greenhouses. Leafy Brassica species are mainly considered for their ability to synthesize glucosinolates and are valued as baby salads. They also have a remarkable concentration of chemically diverse flavonoid glycosides. In this study, the effect of short-term UV-B radiation at the end of the production cycle was investigated without affecting plant growth. The aim was to verify which exposure and adaptation time was suitable and needs to be further investigated to use UV as a biotechnological tool in greenhouse production of Brassica species. It is possible to modify the flavonoid glycoside profile of leafy Brassica species by increasing compounds that appear to have potentially high antioxidant activity. Exemplarily, the present experiment shows that kaempferol glycosides may be preferred over quercetin glycosides in response to UV-B in Brassica rapa ssp. chinensis, for example, whereas other species appear to prefer quercetin glycosides over kaempferol glycosides, such as Brassica oleracea var. sabellica or Brassica carinata. However, the response to short-term UV-B treatment is species-specific and conclusions on exposure and adaptation time cannot be unified but must be drawn separately for each species.

ACS Style

Susanne Neugart; Christiane Bumke-Vogt. Flavonoid Glycosides in Brassica Species Respond to UV-B Depending on Exposure Time and Adaptation Time. Molecules 2021, 26, 494 .

AMA Style

Susanne Neugart, Christiane Bumke-Vogt. Flavonoid Glycosides in Brassica Species Respond to UV-B Depending on Exposure Time and Adaptation Time. Molecules. 2021; 26 (2):494.

Chicago/Turabian Style

Susanne Neugart; Christiane Bumke-Vogt. 2021. "Flavonoid Glycosides in Brassica Species Respond to UV-B Depending on Exposure Time and Adaptation Time." Molecules 26, no. 2: 494.

Journal article
Published: 14 April 2020 in Global Food Security
Reads 0
Downloads 0

Many global health risks are related to what and how much we eat. At the same time, the production of food, especially from animal origin, contributes to environmental change at a scale that threatens boundaries of a safe operating space for humanity. Here we outline viable solutions how to reconcile healthy protein consumption and sustainable protein production which requires a solid, interdisciplinary evidence base. We review the role of proteins for human and ecosystem health, including physiological effects of dietary proteins, production potentials from agricultural and aquaculture systems, environmental impacts of protein production, and mitigation potentials of transforming current production systems. Various protein sources from plant and animal origin, including insects and fish, are discussed in the light of their health and environmental implications. Integration of available knowledge is essential to move from a dual problem description (“healthy diets versus environment”) towards approaches that frame the food challenge of reconciling human and ecosystem health in the context of planetary health. This endeavor requires a shifting focus from metrics at the level of macronutrients to whole diets and a better understanding of the full cascade of health effects caused by dietary proteins, including health risks from food-related environmental degradation.

ACS Style

Isabelle Weindl; Mario Ost; Petra Wiedmer; Monika Schreiner; Susanne Neugart; Rebecca Klopsch; Holger Kühnhold; Werner Kloas; Ina M. Henkel; Oliver Schlüter; Sara Bußler; Dorothea Sonoko Bellingrath-Kimura; Hua Ma; Tilman Grune; Susanne Rolinski; Susanne Klaus. Sustainable food protein supply reconciling human and ecosystem health: A Leibniz Position. Global Food Security 2020, 25, 100367 .

AMA Style

Isabelle Weindl, Mario Ost, Petra Wiedmer, Monika Schreiner, Susanne Neugart, Rebecca Klopsch, Holger Kühnhold, Werner Kloas, Ina M. Henkel, Oliver Schlüter, Sara Bußler, Dorothea Sonoko Bellingrath-Kimura, Hua Ma, Tilman Grune, Susanne Rolinski, Susanne Klaus. Sustainable food protein supply reconciling human and ecosystem health: A Leibniz Position. Global Food Security. 2020; 25 ():100367.

Chicago/Turabian Style

Isabelle Weindl; Mario Ost; Petra Wiedmer; Monika Schreiner; Susanne Neugart; Rebecca Klopsch; Holger Kühnhold; Werner Kloas; Ina M. Henkel; Oliver Schlüter; Sara Bußler; Dorothea Sonoko Bellingrath-Kimura; Hua Ma; Tilman Grune; Susanne Rolinski; Susanne Klaus. 2020. "Sustainable food protein supply reconciling human and ecosystem health: A Leibniz Position." Global Food Security 25, no. : 100367.

Journal article
Published: 29 February 2020 in Journal of Plant Physiology
Reads 0
Downloads 0

UVB radiation can rapidly induce gene regulation leading to cumulative changes for plant physiology and morphology. We hypothesized that a transgenerational effect of chronic exposure to solar short UV modulates the offspring’s responses to UVB and blue light, and that the transgenerational effect is genotype dependent. We established a factorial experiment combining two Vicia faba L. accessions, two parental UV treatments (full sunlight and exclusion of short UV, 290−350 nm), and four offspring light treatments from the factorial combination of UVB and blue light. The accessions were Aurora from southern Sweden, and ILB938 from Andean region of Colombia and Ecuador. The transgenerational effect influenced morphological responses to blue light differently in the two accessions. In Aurora, when UVB was absent, blue light increased shoot dry mass only in plants whose parents were protected from short UV. In ILB938, blue light increased leaf area and shoot dry mass more in plants whose parents were exposed to short UV than those that were not. Moreover, when the offspring was exposed to UVB, the transgenerational effect decreased in ILB938 and disappeared in Aurora. For flavonoids, the transgenerational effect was detected only in Aurora: parental exposure to short UV was associated with a greater induction of total quercetin in response to UVB. Transcript abundance was higher in Aurora than in ILB938 for both CHALCONE SYNTHASE (99-fold) and DON-GLUCOSYLTRANSFERASE 1 (19-fold). The results supported both hypotheses. Solar short UV had transgenerational effects on progeny responses to blue and UVB radiation, and they differed between the accessions. These transgenerational effects could be adaptive by acclimation of slow and cumulative morphological change, and by early build-up of UV protection through flavonoid accumulation on UVB exposure. The differences between the two accessions aligned with their adaptation to contrasting UV environments.

ACS Style

Yan Yan; Fred Stoddard; Susanne Neugart; Michal Oravec; Otmar Urban; Victor O. Sadras; Pedro J. Aphalo. The transgenerational effects of solar short-UV radiation differed in two accessions of Vicia faba L. from contrasting UV environments. Journal of Plant Physiology 2020, 248, 153145 .

AMA Style

Yan Yan, Fred Stoddard, Susanne Neugart, Michal Oravec, Otmar Urban, Victor O. Sadras, Pedro J. Aphalo. The transgenerational effects of solar short-UV radiation differed in two accessions of Vicia faba L. from contrasting UV environments. Journal of Plant Physiology. 2020; 248 ():153145.

Chicago/Turabian Style

Yan Yan; Fred Stoddard; Susanne Neugart; Michal Oravec; Otmar Urban; Victor O. Sadras; Pedro J. Aphalo. 2020. "The transgenerational effects of solar short-UV radiation differed in two accessions of Vicia faba L. from contrasting UV environments." Journal of Plant Physiology 248, no. : 153145.

Journal article
Published: 24 February 2020 in Antioxidants
Reads 0
Downloads 0

Biofortified apples seem to be a suitable produce. In this study, different selenium forms and application levels were applied to the two apple varieties ‘Golden Delicious’ and ‘Jonagold’, grown in the years 2017 and 2018 in order to increase the selenium uptake within a typical Western diet. It was shown that the biofortification, which was performed as a foliar application implemented in usual calcium fertilization, led to significantly increased selenium contents in the fruits. Furthermore, biofortification affected the total phenolic content (TPC), the polyphenol oxidase activity (PPO), as well as the antioxidant activity (AOA), the latter measured with the two well-known assays Trolox Equivalent Antioxidant Capacity Assay (TEAC) and Oxygen Radical Absorbance Capacity Assays (ORAC). The varying selenium forms and application levels showed a differing influence on the parameters mentioned before. Higher fertilizer levels resulted in higher selenium accumulation. It was found that PPO activity fluctuates less in biofortified apples. With regard to TPC, selenate led to higher amounts when compared to the untreated controls and selenite resulted in lower TPC. AOA analysis showed no clear tendencies as a result of the selenium biofortification. In the case of ‘Jonagold’, a higher AOA was generally measured when being biofortified, whereas, in the case of ‘Golden Delicious’, only one form of application led to higher AOA. Additionally, differences in the amount of major phenolic compounds, measured with High Performance Liquid Chromatography Mass Spectrometry (HPLC-DAD-ESI-MSn), were observed, depending on the conditions of the biofortification and the variety.

ACS Style

Sabrina Groth; Christoph Budke; Susanne Neugart; Sofia Ackermann; Fenja-Sarah Kappenstein; Diemo Daum; Sascha Rohn. Influence of a Selenium Biofortification on Antioxidant Properties and Phenolic Compounds of Apples (Malus domestica). Antioxidants 2020, 9, 187 .

AMA Style

Sabrina Groth, Christoph Budke, Susanne Neugart, Sofia Ackermann, Fenja-Sarah Kappenstein, Diemo Daum, Sascha Rohn. Influence of a Selenium Biofortification on Antioxidant Properties and Phenolic Compounds of Apples (Malus domestica). Antioxidants. 2020; 9 (2):187.

Chicago/Turabian Style

Sabrina Groth; Christoph Budke; Susanne Neugart; Sofia Ackermann; Fenja-Sarah Kappenstein; Diemo Daum; Sascha Rohn. 2020. "Influence of a Selenium Biofortification on Antioxidant Properties and Phenolic Compounds of Apples (Malus domestica)." Antioxidants 9, no. 2: 187.

Paper
Published: 21 January 2020 in Photochemical & Photobiological Sciences
Reads 0
Downloads 0

We show the important and dual role of VitB6 as both an antioxidant and an enzymatic co-factor in Arabidopsis plants under exposure to supplementary UV radiation.

ACS Style

Susanne Neugart; Éva Hideg; Gyula Czégény; Monika Schreiner; Åke Strid. Ultraviolet-B radiation exposure lowers the antioxidant capacity in the Arabidopsis thaliana pdx1.3-1 mutant and leads to glucosinolate biosynthesis alteration in both wild type and mutant. Photochemical & Photobiological Sciences 2020, 19, 217 -228.

AMA Style

Susanne Neugart, Éva Hideg, Gyula Czégény, Monika Schreiner, Åke Strid. Ultraviolet-B radiation exposure lowers the antioxidant capacity in the Arabidopsis thaliana pdx1.3-1 mutant and leads to glucosinolate biosynthesis alteration in both wild type and mutant. Photochemical & Photobiological Sciences. 2020; 19 (2):217-228.

Chicago/Turabian Style

Susanne Neugart; Éva Hideg; Gyula Czégény; Monika Schreiner; Åke Strid. 2020. "Ultraviolet-B radiation exposure lowers the antioxidant capacity in the Arabidopsis thaliana pdx1.3-1 mutant and leads to glucosinolate biosynthesis alteration in both wild type and mutant." Photochemical & Photobiological Sciences 19, no. 2: 217-228.

Original article
Published: 04 October 2019 in Journal of Food Processing and Preservation
Reads 0
Downloads 0

The plants (green and red lettuce) were exposed to daily doses of UV‐B radiation for 1 hr for two weeks during growth. UV‐B‐treated green lettuces at the second week presented a greater content of quercetin than the control plants. Caffeoyltartaric acid, caffeoylquinic acid and caffeoylmalic acid also showed a significant accumulation in green lettuce after two weeks of UV‐B treatment in comparison to those non‐treated. Regarding carotenoid content, lutein, neoxanthin, and V + A + Z showed significant increased values after two weeks of UV‐B treatment in comparison to the non‐treated green lettuces. However, chlorophylls and carotenoids content did not present significant difference between the analyzed weeks for the red lettuces. In other words, quercetins, as well as caffeoyltartaric acid, caffeoylquinic acid and cyanidin glycoside of red lettuce showed a significant increase after UV‐B treatment at both weeks in comparison with control red lettuces. Practical applications The impact of UV‐B on plants depends on the fluency rate, exposure time, wavelength of UV‐B radiation, and the amount of UV‐B relative to photosynthetic active radiation. Since carotenoids, chlorophylls, and flavonoid compounds can be increased by ecologically relevant levels of UV‐B in glasshouse production, this study was designed to verify whether supplemental UV‐B radiation was effective in increasing the concentration of health‐promoting compounds in green and red lettuce.

ACS Style

Carolina Fagundes Assumpção; Renato Queiroz Assis; Vanessa Stahl Hermes Poletto; Antonella Castagna; Annamaria Ranieri; Susanne Neugart; Simone Hickmann Flôres; Alessandro Oliveira Rios. Application of supplemental UV‐B radiation in pre‐harvest to enhance health‐promoting compounds accumulation in green and red lettuce. Journal of Food Processing and Preservation 2019, 43, 1 .

AMA Style

Carolina Fagundes Assumpção, Renato Queiroz Assis, Vanessa Stahl Hermes Poletto, Antonella Castagna, Annamaria Ranieri, Susanne Neugart, Simone Hickmann Flôres, Alessandro Oliveira Rios. Application of supplemental UV‐B radiation in pre‐harvest to enhance health‐promoting compounds accumulation in green and red lettuce. Journal of Food Processing and Preservation. 2019; 43 (11):1.

Chicago/Turabian Style

Carolina Fagundes Assumpção; Renato Queiroz Assis; Vanessa Stahl Hermes Poletto; Antonella Castagna; Annamaria Ranieri; Susanne Neugart; Simone Hickmann Flôres; Alessandro Oliveira Rios. 2019. "Application of supplemental UV‐B radiation in pre‐harvest to enhance health‐promoting compounds accumulation in green and red lettuce." Journal of Food Processing and Preservation 43, no. 11: 1.

Journal article
Published: 20 September 2019 in Foods
Reads 0
Downloads 0

Young kale and pea leaves are rich in secondary plant metabolites (SPMs) whose profile can be affected by ultraviolet B (UVB) radiation. Carotenoids and flavonoids in kale and pea exposed to narrow-banded UVB, produced by innovative light-emitting diodes (LEDs), and subsequently used for breadmaking were investigated for the first time, thus combining two important strategies to increase the SPMs intake. Breads were also fortified with protein-rich lentil flour. Antioxidant activity in the ‘vegetable breads’ indicated health-promoting effects. Lentil flour increased the antioxidant activity in all of the ‘vegetable breads’. While carotenoids and chlorophylls showed a minor response to UVB treatment, kaempferol glycosides decreased in favor of increasing quercetin glycosides, especially in kale. Additionally, breadmaking caused major decreases in carotenoids and a conversion of chlorophyll to bioactive degradation products. In ‘kale breads’ and ‘pea breads’, 20% and 84% of flavonoid glycosides were recovered. Thus, kale and pea leaves seem to be suitable natural ingredients for producing innovative Functional Foods.

ACS Style

Rebecca Klopsch; Susanne Baldermann; Alexander Voss; Sascha Rohn; Monika Schreiner; Susanne Neugart; Voss; Rohn. Narrow-Banded UVB Affects the Stability of Secondary Plant Metabolites in Kale (Brassica oleracea var. sabellica) and Pea (Pisum sativum) Leaves Being Added to Lentil Flour Fortified Bread: A Novel Approach for Producing Functional Foods. Foods 2019, 8, 427 .

AMA Style

Rebecca Klopsch, Susanne Baldermann, Alexander Voss, Sascha Rohn, Monika Schreiner, Susanne Neugart, Voss, Rohn. Narrow-Banded UVB Affects the Stability of Secondary Plant Metabolites in Kale (Brassica oleracea var. sabellica) and Pea (Pisum sativum) Leaves Being Added to Lentil Flour Fortified Bread: A Novel Approach for Producing Functional Foods. Foods. 2019; 8 (10):427.

Chicago/Turabian Style

Rebecca Klopsch; Susanne Baldermann; Alexander Voss; Sascha Rohn; Monika Schreiner; Susanne Neugart; Voss; Rohn. 2019. "Narrow-Banded UVB Affects the Stability of Secondary Plant Metabolites in Kale (Brassica oleracea var. sabellica) and Pea (Pisum sativum) Leaves Being Added to Lentil Flour Fortified Bread: A Novel Approach for Producing Functional Foods." Foods 8, no. 10: 427.

Journal article
Published: 06 June 2019 in Journal of Food Composition and Analysis
Reads 0
Downloads 0

Pak choi (Brassica rapa subsp. chinensis) is a leafy vegetable that is widely available in Asia and consumed in rising quantities in Europe. Pak choi contains high levels of secondary plant metabolites, such as carotenoids, chlorophylls, glucosinolates, phenolic compounds, and vitamin K, which are beneficial for humans if consumed on a regular basis. The evaluation of the genotype-induced variation of secondary plant metabolites revealed that the cultivar ‘Amur’ contained the highest concentration of secondary plant metabolites. Furthermore, steaming retained more chlorophylls, glucosinolates, phenolic acids and flavonoid compounds than boiling. In contrast, both domestic cooking methods – boiling, and steaming – reduced the formation of glucosinolate breakdown products, especially the undesired epithionitriles and nitriles but less of the health-beneficial isothiocyanates.

ACS Style

Xiaomin Chen; Franziska S. Hanschen; Susanne Neugart; Monika Schreiner; Sara A. Vargas; Björn Gutschmann; Susanne Baldermann. Boiling and steaming induced changes in secondary metabolites in three different cultivars of pak choi (Brassica rapa subsp. chinensis). Journal of Food Composition and Analysis 2019, 82, 103232 .

AMA Style

Xiaomin Chen, Franziska S. Hanschen, Susanne Neugart, Monika Schreiner, Sara A. Vargas, Björn Gutschmann, Susanne Baldermann. Boiling and steaming induced changes in secondary metabolites in three different cultivars of pak choi (Brassica rapa subsp. chinensis). Journal of Food Composition and Analysis. 2019; 82 ():103232.

Chicago/Turabian Style

Xiaomin Chen; Franziska S. Hanschen; Susanne Neugart; Monika Schreiner; Sara A. Vargas; Björn Gutschmann; Susanne Baldermann. 2019. "Boiling and steaming induced changes in secondary metabolites in three different cultivars of pak choi (Brassica rapa subsp. chinensis)." Journal of Food Composition and Analysis 82, no. : 103232.

Journal article
Published: 28 May 2019 in Environmental and Experimental Botany
Reads 0
Downloads 0

Manipulation of spectral composition has been found to be an efficient way to influence the growth and quality of plant production in protected or controlled environments. The aim of this study was to compare the short- and long-term effects of early pretreatment with different color shades on the composition of phenolic compounds and photosynthetic pigments in Cichorium leaves. The analyses conducted immediately after color shade pretreatments at ˜40 µmol m-²s-1 (blue, red orange, white) indicated lower values of chlorophyll, anthocyanin and flavonoid indices, as well as of the majority of flavonoids, compared to those in the same plants subsequently grown for 4 weeks under higher white light with an intensity of ˜320 µmol m-²s-1. However, we observed significant differences in the contents of phenolics and pigments depending on previous color shade pretreatment in plants grown for 4 weeks in the same environment and in leaves grown during this period. The most significant effect was observed in plants pretreated with orange light, in which levels of isorhamnetin, its derivatives and feruloyl malate were increased, and kaempferol-3-(6”-acetyl)-glucoside levels were significantly decreased. Blue light pretreatment led to lower values of chlorogenic acid, caftaric acid and isorhamnetin-3-(6”-acetyl)-glucoside but a higher content of isorhamnetin-3-glucoside. Red light led to an increase in quercetin derivatives. Compared to plants grown under constant conditions, low light in the early growth phases led to the upregulation of feruloyl malate, caffeoyl malate and kaempferol derivatives. Nondestructive measurements enabled the identification of significant effects of light pretreatment on the chlorophyll contents, as well as the accumulation of flavonoids and anthocyanins in the epidermal leaf layer. The induction of specific metabolites influenced by the acclimation of plants to colored light environments may emphasize the environment‐induced biochemical responses associated with the remarkable plasticity of phenylpropanoid metabolism.

ACS Style

Oksana Sytar; Marek Zivcak; Susanne Neugart; Peyman Mohammadzadeh Toutounchi; Marian Brestic. Precultivation of young seedlings under different color shades modifies the accumulation of phenolic compounds in Cichorium leaves in later growth phases. Environmental and Experimental Botany 2019, 165, 30 -38.

AMA Style

Oksana Sytar, Marek Zivcak, Susanne Neugart, Peyman Mohammadzadeh Toutounchi, Marian Brestic. Precultivation of young seedlings under different color shades modifies the accumulation of phenolic compounds in Cichorium leaves in later growth phases. Environmental and Experimental Botany. 2019; 165 ():30-38.

Chicago/Turabian Style

Oksana Sytar; Marek Zivcak; Susanne Neugart; Peyman Mohammadzadeh Toutounchi; Marian Brestic. 2019. "Precultivation of young seedlings under different color shades modifies the accumulation of phenolic compounds in Cichorium leaves in later growth phases." Environmental and Experimental Botany 165, no. : 30-38.

Paper
Published: 23 May 2019 in Photochemical & Photobiological Sciences
Reads 0
Downloads 0

UVR8, COP1 and HY5 all play an important role in the accumulation of flavonoids as a response to UV irradiation.

ACS Style

Susanne Neugart; Mark A. Tobler; Paul W. Barnes. Different irradiances of UV and PAR in the same ratios alter the flavonoid profiles of Arabidopsis thaliana wild types and UV-signalling pathway mutants. Photochemical & Photobiological Sciences 2019, 18, 1685 -1699.

AMA Style

Susanne Neugart, Mark A. Tobler, Paul W. Barnes. Different irradiances of UV and PAR in the same ratios alter the flavonoid profiles of Arabidopsis thaliana wild types and UV-signalling pathway mutants. Photochemical & Photobiological Sciences. 2019; 18 (7):1685-1699.

Chicago/Turabian Style

Susanne Neugart; Mark A. Tobler; Paul W. Barnes. 2019. "Different irradiances of UV and PAR in the same ratios alter the flavonoid profiles of Arabidopsis thaliana wild types and UV-signalling pathway mutants." Photochemical & Photobiological Sciences 18, no. 7: 1685-1699.

Journal article
Published: 17 May 2019 in Journal of Experimental Botany
Reads 0
Downloads 0

Cryptochromes (CRYs) and UV RESISTANCE LOCUS 8 (UVR8) photoreceptors perceive UV-A/blue (315–500 nm) and UV-B (280–315 nm) radiation in plants, respectively. While the roles of CRYs and UVR8 have been studied in separate controlled-environment experiments, little is known about the interaction between these photoreceptors. Here, Arabidopsis wild-type Ler, CRYs and UVR8 photoreceptor mutants (uvr8-2, cry1cry2 and cry1cry2uvr8-2), and a flavonoid biosynthesis-defective mutant (tt4) were grown in a sun simulator. Plants were exposed to filtered radiation for 17 d or for 6 h, to study the effects of blue, UV-A, and UV-B radiation. Both CRYs and UVR8 independently enabled growth and survival of plants under solar levels of UV, while their joint absence was lethal under UV-B. CRYs mediated gene expression under blue light. UVR8 mediated gene expression under UV-B radiation, and in the absence of CRYs, also under UV-A. This negative regulation of UVR8-mediated gene expression by CRYs was also observed for UV-B. The accumulation of flavonoids was also consistent with this interaction between CRYs and UVR8. In conclusion, we provide evidence for an antagonistic interaction between CRYs and UVR8 and a role of UVR8 in UV-A perception.

ACS Style

Neha Rai; Susanne Neugart; Yan Yan; Fang Wang; Sari M Siipola; Anders V. Lindfors; Jana Barbro Winkler; Andreas Albert; Mikael Brosché; Tarja Lehto; Luis O Morales; Pedro J Aphalo. How do cryptochromes and UVR8 interact in natural and simulated sunlight? Journal of Experimental Botany 2019, 70, 4975 -4990.

AMA Style

Neha Rai, Susanne Neugart, Yan Yan, Fang Wang, Sari M Siipola, Anders V. Lindfors, Jana Barbro Winkler, Andreas Albert, Mikael Brosché, Tarja Lehto, Luis O Morales, Pedro J Aphalo. How do cryptochromes and UVR8 interact in natural and simulated sunlight? Journal of Experimental Botany. 2019; 70 (18):4975-4990.

Chicago/Turabian Style

Neha Rai; Susanne Neugart; Yan Yan; Fang Wang; Sari M Siipola; Anders V. Lindfors; Jana Barbro Winkler; Andreas Albert; Mikael Brosché; Tarja Lehto; Luis O Morales; Pedro J Aphalo. 2019. "How do cryptochromes and UVR8 interact in natural and simulated sunlight?" Journal of Experimental Botany 70, no. 18: 4975-4990.

Journal article
Published: 16 May 2019 in Food Chemistry
Reads 0
Downloads 0

Consumption of Brassica vegetables is linked to health benefits, as they contain high concentrations of the following secondary plant metabolites (SPMs): glucosinolate breakdown products, carotenoids, chlorophylls, and phenolic compounds. Especially Brassica vegetables are consumed as microgreens (developed cotyledons). It was investigated how different ontogenetic stages (microgreens or leaves) of pak choi (Brassica rapa subsp. chinensis) and kale (Brassica oleracea var. sabellica) differ in their SPM concentration. The impact of breadmaking on SPMs in microgreens (7 days) and leaves (14 days) in pak choi and kale as a supplement in mixed wheat bread was assessed. In leaves, carotenoids, chlorophylls, and phenolic compounds were higher compared to those of microgreens. Breadmaking caused a decrease of SPMs. Chlorophyll degradation was observed, leading to pheophytin and pyropheophytin formation. In kale, sinapoylgentiobiose, a hydroxycinnamic acid derivative, concentration increased. Thus, leaves of Brassica species are suitable as natural ingredients for enhancing bioactive SPM concentrations in bread.

ACS Style

Rebecca Klopsch; Susanne Baldermann; Franziska S. Hanschen; Alexander Voss; Sascha Rohn; Monika Schreiner; Susanne Neugart. Brassica-enriched wheat bread: Unraveling the impact of ontogeny and breadmaking on bioactive secondary plant metabolites of pak choi and kale. Food Chemistry 2019, 295, 412 -422.

AMA Style

Rebecca Klopsch, Susanne Baldermann, Franziska S. Hanschen, Alexander Voss, Sascha Rohn, Monika Schreiner, Susanne Neugart. Brassica-enriched wheat bread: Unraveling the impact of ontogeny and breadmaking on bioactive secondary plant metabolites of pak choi and kale. Food Chemistry. 2019; 295 ():412-422.

Chicago/Turabian Style

Rebecca Klopsch; Susanne Baldermann; Franziska S. Hanschen; Alexander Voss; Sascha Rohn; Monika Schreiner; Susanne Neugart. 2019. "Brassica-enriched wheat bread: Unraveling the impact of ontogeny and breadmaking on bioactive secondary plant metabolites of pak choi and kale." Food Chemistry 295, no. : 412-422.

Review
Published: 15 May 2019 in Photochemical & Photobiological Sciences
Reads 0
Downloads 0

Plant UV research is at a juncture, whereby mechanistic knowledge of UV photoreceptor responses needs to be applied to ecologically relevant scenarios and put to practical use in plant production.

ACS Style

T. Matthew Robson; Pedro J. Aphalo; Agnieszka Katarzyna Banaś; Paul W. Barnes; Craig C. Brelsford; Gareth I. Jenkins; Titta K. Kotilainen; Justyna Łabuz; Javier Martínez-Abaigar; Luis O. Morales; Susanne Neugart; Marta Pieristè; Neha Rai; Filip Vandenbussche; Marcel A. K. Jansen. A perspective on ecologically relevant plant-UV research and its practical application. Photochemical & Photobiological Sciences 2019, 18, 970 -988.

AMA Style

T. Matthew Robson, Pedro J. Aphalo, Agnieszka Katarzyna Banaś, Paul W. Barnes, Craig C. Brelsford, Gareth I. Jenkins, Titta K. Kotilainen, Justyna Łabuz, Javier Martínez-Abaigar, Luis O. Morales, Susanne Neugart, Marta Pieristè, Neha Rai, Filip Vandenbussche, Marcel A. K. Jansen. A perspective on ecologically relevant plant-UV research and its practical application. Photochemical & Photobiological Sciences. 2019; 18 (5):970-988.

Chicago/Turabian Style

T. Matthew Robson; Pedro J. Aphalo; Agnieszka Katarzyna Banaś; Paul W. Barnes; Craig C. Brelsford; Gareth I. Jenkins; Titta K. Kotilainen; Justyna Łabuz; Javier Martínez-Abaigar; Luis O. Morales; Susanne Neugart; Marta Pieristè; Neha Rai; Filip Vandenbussche; Marcel A. K. Jansen. 2019. "A perspective on ecologically relevant plant-UV research and its practical application." Photochemical & Photobiological Sciences 18, no. 5: 970-988.

Original research article
Published: 02 April 2019 in Frontiers in Plant Science
Reads 0
Downloads 0

Recently, new annual and biennial cultivars of rapeseed with white flowers have been introduced to the baby leaf market. The white flower trait has been bred into modern cultivars of yellow flowering rapeseed. In baby leaf production, it is common practice to perform several cuts of the same plants, thereby harvesting regrown material. Seven white and yellow flowering annual and biennial rapeseed cultivars were harvested as baby leaves, baby leaf re-growths, and intact plants in order to investigate the content of flavonoid glycosides and hydroxycinnamic acid derivatives. The field experiment was conducted over two consecutive years to obtain seasonal differences. The yields and levels of flavonoid glycosides and hydroxycinnamic acids were higher in 2016 than 2017, due to higher temperatures and radiation. Within the growing stage, the effects of flower color, cultivar, and life cycle on flavonoid glycosides and hydroxycinnamic acids varied; however, in general, life cycle was the main influence that resulted in elevated levels of flavonoid glycosides and hydroxycinnamic acids in biennial cultivars, compared to annual cultivars. The effects of the growing stage differed between years, and were influenced by climatic conditions. In conclusion, the choice of life cycle (annual or biennial cultivars) and seasonal effects was of major influence, overruling the effect of developmental stage on the content of flavonoid glycosides and hydroxycinnamic acids.

ACS Style

Marie Groenbaek; Erik Tybirk; Susanne Neugart; Ulrik Sundekilde; Monika Schreiner; Hanne Lakkenborg Kristensen. Flavonoid Glycosides and Hydroxycinnamic Acid Derivatives in Baby Leaf Rapeseed From White and Yellow Flowering Cultivars With Repeated Harvest in a 2-Years Field Study. Frontiers in Plant Science 2019, 10, 1 .

AMA Style

Marie Groenbaek, Erik Tybirk, Susanne Neugart, Ulrik Sundekilde, Monika Schreiner, Hanne Lakkenborg Kristensen. Flavonoid Glycosides and Hydroxycinnamic Acid Derivatives in Baby Leaf Rapeseed From White and Yellow Flowering Cultivars With Repeated Harvest in a 2-Years Field Study. Frontiers in Plant Science. 2019; 10 ():1.

Chicago/Turabian Style

Marie Groenbaek; Erik Tybirk; Susanne Neugart; Ulrik Sundekilde; Monika Schreiner; Hanne Lakkenborg Kristensen. 2019. "Flavonoid Glycosides and Hydroxycinnamic Acid Derivatives in Baby Leaf Rapeseed From White and Yellow Flowering Cultivars With Repeated Harvest in a 2-Years Field Study." Frontiers in Plant Science 10, no. : 1.

Journal article
Published: 07 March 2019 in Nutrients
Reads 0
Downloads 0

For centuries, Amaranthus sp. were used as food, ornamentals, and medication. Molecular mechanisms, explaining the health beneficial properties of amaranth, are not yet understood, but have been attributed to secondary metabolites, such as phenolic compounds. One of the most abundant phenolic compounds in amaranth leaves is 2-caffeoylisocitric acid (C-IA) and regarding food occurrence, C-IA is exclusively found in various amaranth species. In the present study, the anti-inflammatory activity of C-IA, chlorogenic acid, and caffeic acid in LPS-challenged macrophages (RAW 264.7) has been investigated and cellular contents of the caffeic acid derivatives (CADs) were quantified in the cells and media. The CADs were quantified in the cell lysates in nanomolar concentrations, indicating a cellular uptake. Treatment of LPS-challenged RAW 264.7 cells with 10 µM of CADs counteracted the LPS effects and led to significantly lower mRNA and protein levels of inducible nitric oxide synthase, tumor necrosis factor alpha, and interleukin 6, by directly decreasing the translocation of the nuclear factor κB/Rel-like containing protein 65 into the nucleus. This work provides new insights into the molecular mechanisms that attribute to amaranth’s anti-inflammatory properties and highlights C-IA’s potential as a health-beneficial compound for future research.

ACS Style

David Schröter; Susanne Neugart; Monika Schreiner; Tilman Grune; Sascha Rohn; Christiane Ott. Amaranth’s 2-Caffeoylisocitric Acid—An Anti-Inflammatory Caffeic Acid Derivative That Impairs NF-κB Signaling in LPS-Challenged RAW 264.7 Macrophages. Nutrients 2019, 11, 571 .

AMA Style

David Schröter, Susanne Neugart, Monika Schreiner, Tilman Grune, Sascha Rohn, Christiane Ott. Amaranth’s 2-Caffeoylisocitric Acid—An Anti-Inflammatory Caffeic Acid Derivative That Impairs NF-κB Signaling in LPS-Challenged RAW 264.7 Macrophages. Nutrients. 2019; 11 (3):571.

Chicago/Turabian Style

David Schröter; Susanne Neugart; Monika Schreiner; Tilman Grune; Sascha Rohn; Christiane Ott. 2019. "Amaranth’s 2-Caffeoylisocitric Acid—An Anti-Inflammatory Caffeic Acid Derivative That Impairs NF-κB Signaling in LPS-Challenged RAW 264.7 Macrophages." Nutrients 11, no. 3: 571.

Journals
Published: 04 January 2019 in Photochemical & Photobiological Sciences
Reads 0
Downloads 0

The responses of growth, physiological traits, flavonoid profiles and gene expressions to solar blue and UV radiation differed in two accessions Aurora and ILB938 of Vicia faba.

ACS Style

Yan Yan; Frederick L. Stoddard; Susanne Neugart; Victor O. Sadras; Anders V. Lindfors; Luis Orlando Morales; Pedro J. Aphalo. Responses of flavonoid profile and associated gene expression to solar blue and UV radiation in two accessions of Vicia faba L. from contrasting UV environments. Photochemical & Photobiological Sciences 2019, 18, 434 -447.

AMA Style

Yan Yan, Frederick L. Stoddard, Susanne Neugart, Victor O. Sadras, Anders V. Lindfors, Luis Orlando Morales, Pedro J. Aphalo. Responses of flavonoid profile and associated gene expression to solar blue and UV radiation in two accessions of Vicia faba L. from contrasting UV environments. Photochemical & Photobiological Sciences. 2019; 18 (2):434-447.

Chicago/Turabian Style

Yan Yan; Frederick L. Stoddard; Susanne Neugart; Victor O. Sadras; Anders V. Lindfors; Luis Orlando Morales; Pedro J. Aphalo. 2019. "Responses of flavonoid profile and associated gene expression to solar blue and UV radiation in two accessions of Vicia faba L. from contrasting UV environments." Photochemical & Photobiological Sciences 18, no. 2: 434-447.

Correction
Published: 29 November 2018 in Frontiers in Plant Science
Reads 0
Downloads 0

Corrigendum: UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin

ACS Style

Marco Santin; Susanne Neugart; Antonella Castagna; Martina Barilari; Sabrina Sarrocco; Giovanni Vannacci; Monika Schreiner; Annamaria Ranieri. Corrigendum: UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin. Frontiers in Plant Science 2018, 9, 1 .

AMA Style

Marco Santin, Susanne Neugart, Antonella Castagna, Martina Barilari, Sabrina Sarrocco, Giovanni Vannacci, Monika Schreiner, Annamaria Ranieri. Corrigendum: UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin. Frontiers in Plant Science. 2018; 9 ():1.

Chicago/Turabian Style

Marco Santin; Susanne Neugart; Antonella Castagna; Martina Barilari; Sabrina Sarrocco; Giovanni Vannacci; Monika Schreiner; Annamaria Ranieri. 2018. "Corrigendum: UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin." Frontiers in Plant Science 9, no. : 1.

Original research article
Published: 06 November 2018 in Frontiers in Plant Science
Reads 0
Downloads 0

Phenolic compounds represent a large class of secondary metabolites, involved in multiple functions not only in plant life cycle, but also in fruit during post-harvest. phenolics play a key role in the response to biotic and abiotic stresses, thus their accumulation is regulated by the presence of environmental stimuli. The present work aimed to investigate how different pre-UV-B-exposures can modulate the phenolic response of peach fruit infected with Monilinia fructicola. Through HPLC-DAD-MSn, several procyanidins, phenolic acids, flavonols, and anthocyanins were detected. Both UV-B radiation and fungal infection were able to stimulate the accumulation of phenolics, dependent on the chemical structure. Regarding UV-B exposure, inoculated with sterile water, 3 h of UV-B radiation highest concentration of phenolics was found, especially flavonols and cyanidin-3-glucoside far from the wound. However, wounding decreased the phenolics in the region nearby. When peaches were pre-treated with 1 h of UV-B radiation, the fungus had an additive effect in phenolic accumulation far from the infection, while it had a subtractive effect with 3 h of UV-B radiation, especially for flavonols. Canonical discriminant analysis and Pearson correlation revealed that all phenolic compounds, except procyanidin dimer, were highly regulated by UV-B radiation, with particularly strong correlation for quercetin and kaempferol glycosides, while phenolics correlated with the fungus infection were quercetin-3-galactoside, quercetin-3-glucoside, kaempferol-3-galactoside and isorhamnetin-3-glucoside. Modulation of pathogen-induced phenolics also far from inoculation site might suggest a migration of signaling molecules from the infected area to healthy tissues.

ACS Style

Marco Santin; Susanne Neugart; Antonella Castagna; Martina Barilari; Sabrina Sarrocco; Giovanni Vannacci; Monika Schreiner; Annamaria Ranieri. UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin. Frontiers in Plant Science 2018, 9, 1 .

AMA Style

Marco Santin, Susanne Neugart, Antonella Castagna, Martina Barilari, Sabrina Sarrocco, Giovanni Vannacci, Monika Schreiner, Annamaria Ranieri. UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin. Frontiers in Plant Science. 2018; 9 ():1.

Chicago/Turabian Style

Marco Santin; Susanne Neugart; Antonella Castagna; Martina Barilari; Sabrina Sarrocco; Giovanni Vannacci; Monika Schreiner; Annamaria Ranieri. 2018. "UV-B Pre-treatment Alters Phenolics Response to Monilinia fructicola Infection in a Structure-Dependent Way in Peach Skin." Frontiers in Plant Science 9, no. : 1.