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  • 1
    Online Resource
    Online Resource
    The Impact of Salinity Stress on Antioxidant Response and Bioactive Compounds of Nepeta cataria L.
    MDPI AG ; 2022
    In:  Agronomy Vol. 12, No. 3 ( 2022-02-24), p. 562-
    Details
    In: Agronomy, MDPI AG, Vol. 12, No. 3 ( 2022-02-24), p. 562-
    Abstract: In this study, the ability of Nepeta cataria L. to grow and synthesize bioactive compounds on soil treated with different salt concentrations was tested to evaluate the opportunity of cultivating it in soils affected by salinization. N. cataria L. was grown in soil containing specific amounts of NaCl, Na2SO4, and their mixture. After harvesting, the plants were analyzed from the morphological and physiological point of view. Salinity stress inhibited the growth, with the highest decrease of the plant yield up to about 70% in the case of salt mixture, and smaller values for the separate salt treatments. In the same time, as a defense mechanism, there was an increase of granular trichomes’ density, as observed with the scanning electron microscope. For mild concentrations of salt, the amount of chlorophyll pigments was enhanced, while for stronger salinity stress, it decreased. The opposite behavior was evidenced for the polyphenol content, as antioxidant activity was used as a protective mechanism against reactive oxygen species produced under salinity stress. The antioxidant activity was considerably higher for separate NaCl and Na2SO4 treatments than for the salt mixture variants. The results showed that the species Nepeta cataria L. reacts well to high salinity levels, with an increased content of bioactive compounds and antioxidant activity even for the highest studied salinity conditions.
    Type of Medium: Online Resource
    ISSN: 2073-4395
    URL: Article
    DOI: 10.3390/agronomy12030562
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2607043-1
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  • 2
    Online Resource
    Online Resource
    Functional Quality of Improved Tomato Genotypes Grown in Open Field and in Plastic Tunnel under Organic Farming
    MDPI AG ; 2021
    In:  Agriculture Vol. 11, No. 7 ( 2021-06-29), p. 609-
    Details
    In: Agriculture, MDPI AG, Vol. 11, No. 7 ( 2021-06-29), p. 609-
    Abstract: In response to urgent demand to raise awareness of the nutritional and health benefits of tomato consumption and to advocate for healthy diets through increased sustainable production and consumption of fruits and vegetables, this study is intended to promote a healthy and balanced lifestyle, sharing the best practices of production and consumption. The aim of this research was to compare the effects of the growing system (field vs. plastic tunnel) and of genotype characteristics for organic improved tomato genotypes. The research was carried out in the 2019 and 2020 years on eight improved tomato genotypes. The results showed that the ascorbic acid content presented higher values for organic tomatoes cultivated in the field for all genotypes studied, with an upper limit of 18.57 mg·100 g−1 FW. In contrast, the content in β-carotene and lycopene showed higher values for genotypes grown under plastic tunnel conditions. Significant statistical differences were noticed concerning the mean values of all genotypes according to cultivation conditions (field vs. plastic tunnel) for most parameters excepting total soluble solids (TSS), titratable acidity (TA), maturity index (MI) and flavor index (FI). This highlights the major importance of the selection of some genotypes of tomatoes that respond positively to the organic cultivation system in terms of the presence of the antioxidants compounds (vitamin C, lycopene, and carotene) in representative quantities. Genotype 3 is highlighted by the highest content in carotene (7.4 mg·100 g−1 F.W.) and lycopene (8.4 mg·100 g−1 F.W.) and genotype 5 by the highest content in vitamin C (16.8 mg·100 g−1 F.W.). The results of the study suggest that by applying appropriate techniques for growing organic tomatoes in the plastic tunnel system, the antioxidant substrate can be optimized compared to the results obtained for the field system.
    Type of Medium: Online Resource
    ISSN: 2077-0472
    URL: Article
    DOI: 10.3390/agriculture11070609
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2651678-0
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  • 3
    Online Resource
    Online Resource
    Increasing the Salt Stress Tolerance of Some Tomato Cultivars under the Influence of Growth Regulators
    MDPI AG ; 2023
    In:  Plants Vol. 12, No. 2 ( 2023-01-12), p. 363-
    Details
    In: Plants, MDPI AG, Vol. 12, No. 2 ( 2023-01-12), p. 363-
    Abstract: Areas with saline soils are in continuous expansion, and in this context, it is very important to find solutions that help plants adapt more easily to these stress conditions, and to identify the main physiological and biochemical mechanisms involved in determining a good adaptability of plants. Biostimulants could be a plausible solution. This study was conducted in 2021 at the IULS (Iasi University of Life Sciences) in Romania, under greenhouse conditions and the biological material consisted of four tomato varieties: Buzau, Elisabeta, Bacovia, and Lillagro. For the treatments, we used natrium chloride (NaCl) 120 mM and an Atonik biostimulant. Three treatments were applied at intervals of 14 days. The Atonik biostimulant was applied by foliar spray, and the saline solution was applied to the root system. We have gathered some observations on the growth and fruiting character of the tomato plants studied: the height of the stems, the number of flowers in the inflorescence, the number of fruits, and the weight of fruits. Chlorophyll and carotenoid pigments as well as proline amino acid from leaves were also measured. Observations were made 14 days after the application of each treatment. Quantitative determinations were made 14 days after the application of the third treatment. The findings of this study made it clear that the Atonik biostimulant presented a positive effect on the physiological processes observed in tomato plants grown under salt stress conditions.
    Type of Medium: Online Resource
    ISSN: 2223-7747
    URL: Article
    DOI: 10.3390/plants12020363
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2704341-1
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  • 4
    Online Resource
    Online Resource
    Influence of Environmental Factors on Some Biochemical and Physiological Indicators in Grapevine from Copou Vineyard, Iasi, Romania
    MDPI AG ; 2023
    In:  Agronomy Vol. 13, No. 3 ( 2023-03-16), p. 886-
    Details
    In: Agronomy, MDPI AG, Vol. 13, No. 3 ( 2023-03-16), p. 886-
    Abstract: Climate factors strongly impact the growth of grapes and their flavonoid composition, especially due to heat and drought stress. Four varieties—Gelu, Moldova, Purpuriu, and Coarna Neagra—from a Copou vineyard were analyzed to assess the impact of climate change on the anthocyanin concentration in grapes and total chlorophyll content of the leaves, and find possible correlations between these parameters during the two studied years, such as to raise producer awareness regarding the climate impact on table grape vine growth. Moldova and Purpuriu show adaptation to a slight temperature increase above the normal average and also to a water deficit, with increased concentrations of anthocyanins of up to three times. The Moldova variety accumulated low amounts of chlorophyll pigments in most analyzed development phases, indicating a negative correlation between these pigments. Coarna neagra exhibited an increase of the foliar pigments, a variety that proved to be less valuable from the point of view of anthocyanin content. Positive correlations were found between the anthocyanin and chlorophyll concentrations in the case of Gelu, Moldova, and Coarna neagra cultivars during the latter phase of the fruit development, whereas the water deficit in the second year induced negative correlations during fruit development and at the time of harvest for all studied varieties except Moldova.
    Type of Medium: Online Resource
    ISSN: 2073-4395
    URL: Article
    DOI: 10.3390/agronomy13030886
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2607043-1
    SSG: 23
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  • 5
    Online Resource
    Online Resource
    Dynamics of the Foliar Pigments Content in Some Bean Genotypes, from North-East Romania, under Salt Stress
    University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca ; 2019
    In:  Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture Vol. 76, No. 1 ( 2019-06-12), p. 54-60
    Details
    In: Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Vol. 76, No. 1 ( 2019-06-12), p. 54-60
    Abstract: Phaseolus vulgaris L. is a salt-sensitive species. For this reason, the purpose of the face work was to determine the effect of excess NaCl on the content of the chlorophyll pigments as an indicator of salt stress tolerance. Therefore, in the present study, of the influence of saline solutions of 100 mM and 200 mM NaCl was studied on the content of assimilatory pigments, to 7 local populations of common beans, collected from areas with saline soils, from Nord-East of Romania and grown under greenhouse conditions, at the pots. The experiment is part of a broader research, and the determination of pigment content is only one stage of this research, because and other physiological and biochemical parameters are analyzed. 15 days after treatment the content of chlorophyll a, chlorophyll b and carotenoids pigments showed higher values compared with analyzes performed after 30 days. The overall objective of the research is to contribute to a better understanding of the physiological mechanisms involved in the saline stress tolerance of Phaseolus vulgaris L., identification of local populations of salinity-tolerant beans and their use in breeding programs of this species. As novelty, in the current study, new genotypes were found of bean, from Nord-East of Romania, tolerant to this factor.
    Type of Medium: Online Resource
    ISSN: 1843-5386 , 1843-5246
    URL: Article
    DOI: 10.15835/buasvmcn-hort:2019.0007
    Language: Unknown
    Publisher: University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca
    Publication Date: 2019
    detail.hit.zdb_id: 2439297-2
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  • 6
    Online Resource
    Online Resource
    Salinity Stress Influences the Main Biochemical Parameters of Nepeta racemosa Lam.
    MDPI AG ; 2023
    In:  Plants Vol. 12, No. 3 ( 2023-01-29), p. 583-
    Details
    In: Plants, MDPI AG, Vol. 12, No. 3 ( 2023-01-29), p. 583-
    Abstract: In this work, the effects of salt stress on Nepeta racemosa Lam. were studied to analyze the possibility of using it as a potential culture for salinity-affected soils. A total of nine concentrations of salts—NaCl (18, 39, and 60 mg/100 g soil), Na2SO4 (50, 85, and 120 mg/100 g soil), and a mixture (9 g NaCl + 25 g Na2SO4, 19 g NaCl + 43 g Na2SO4, and 30 g NaCl + 60 g Na2SO4/100 g soil)—simulated real salinity conditions. Environmental electron microscopy offered information about the size and distribution of glandular trichomes, which are very important structures that contain bioactive compounds. The chlorophyll pigments, polyphenols, flavonoids, and antioxidant activity were determined based on spectrophotometric protocols. The results have shown a different impact of salinity depending on the salt type, with an increase in bioactive compound concentrations in some cases. The highest polyphenol concentrations were obtained for Na2SO4 variants (47.05 and 46.48 mg GA/g dw for the highest salt concentration in the first and second year, respectively), while the highest flavonoid content was found for the salt mixtures (42.77 and 39.89 mg QE/g dw for the highest concentrations of salt in the first and, respectively, the second year), approximately 100% higher than control. From the Pearson analysis, strong correlations were found between chlorophyll pigments (up to 0.93), antioxidant activity and yield for the first harvest (up to 0.38), and antioxidant activity and flavonoid content for the second harvest (up to 0.95). The results indicate the possibility of growing the studied plants in salt-stress soils, obtaining higher concentrations of bioactive compounds.
    Type of Medium: Online Resource
    ISSN: 2223-7747
    URL: Article
    DOI: 10.3390/plants12030583
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2704341-1
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  • 7
    Online Resource
    Online Resource
    COMPARATIVE ANALYSIS OF THE INFLUENCE OF DIFFERENT BIOSTIMULATORS ON THE GERMINATION AND SPROUTING BEHAVIOUR OF FOUR WHEAT VARIETIES
    University of Life Sciences in lasi ; 2023
    In:  Journal of Applied Life Sciences and Environment Vol. 55/2022, No. 4(192) ( 2023-4-27), p. 377-390
    Details
    In: Journal of Applied Life Sciences and Environment, University of Life Sciences in lasi, Vol. 55/2022, No. 4(192) ( 2023-4-27), p. 377-390
    Abstract: Wheat is an important cereal around the world and is a nutrient source in people’s diets. In this work, we focused on the potential of some biostimulators on four wheat varieties - Dropia, Glosa, Gruia, and Pegasus, with a focus on the effects during the first developing stages from germination to the appearance of the second leaf. Our results indicated that germination and some biochemical traits can be strongly influenced by biostimulants, with the effects also depending on the genetic background of the variety. Some treatments proved beneficial for germination, and also growth as found by the biometric measurements, while others inhibited both traits. Some of the biostimulants increased the concentration of the photosynthetic compounds, thus being recommended for use during all stages of wheat development. Dropia, Glosa, and Gruia reacted positively in most tests, their germination and plant and root development were stimulated by Super fifty, Atonik, Asfac, and Cropmax. Thus, we recommend the use of these biostimulants in the first development stages. The concentrations of photosynthetic pigments increased after treatment with Asfac, Atonik, and Cropmax. The treatment showing the most inhibitory effects was Lebosol.
    Type of Medium: Online Resource
    ISSN: 2784-0360 , 2784-0379
    URL: Issue
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.46909/alse-55/2022
    DOI: 10.46909/alse-4(192)/2022
    DOI: 10.46909/jalse
    DOI: 10.46909/alse-554071
    Language: English
    Publisher: University of Life Sciences in lasi
    Publication Date: 2023
    detail.hit.zdb_id: 3168547-X
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  • 8
    Online Resource
    Online Resource
    Effect of sodium chloride on physiological, biochemical traits, and mineral nutrition inhibition of peanut varieties in large temperature fluctuations
    Elsevier BV ; 2022
    In:  Plant Stress Vol. 6 ( 2022-12), p. 100123-
    Details
    In: Plant Stress, Elsevier BV, Vol. 6 ( 2022-12), p. 100123-
    Type of Medium: Online Resource
    ISSN: 2667-064X
    URL: Article
    DOI: 10.1016/j.stress.2022.100123
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
    detail.hit.zdb_id: 3066127-4
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  • 9
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    Online Resource
    A Study on the Development of Two Ornamental Varieties of Ipomoea batatas Cultivated in Vertical Systems in the Northeastern Region of Europe
    MDPI AG ; 2024
    In:  Horticulturae Vol. 10, No. 2 ( 2024-01-30), p. 133-
    Details
    In: Horticulturae, MDPI AG, Vol. 10, No. 2 ( 2024-01-30), p. 133-
    Abstract: The Ipomoea batatas ornamental variety of the edible sweet potato is a decorative sweet potato with exquisite leaves, available in different varieties. Due to its numerous characteristics related to resistance, adaptability to environmental conditions, rapid growth, and aesthetic traits, it has attracted the interest of researchers. The purpose of this study is to investigate the growth and development behaviour of two varieties of I. batatas, namely ‘Margarita’ and ‘Blackie’, cultivated in vertical systems, to provide guidelines for their usage in green façade design. The physiological growth processes throughout the growing season were analysed by monitoring three biometric parameters (diameter, height, and leaf count), transpiration (dehydration rate), and the photosynthesis process (photosynthetic pigment content) for treated and control variants and four cardinal orientations (N, E, S, and W). Compared to the control and western orientation, which proved to be less advantageous, the northern orientation and treatment appeared to be the most suitable options for both varieties analysed. Also, the content of organic substances was more intense in the Cropmax-treated ‘Blackie’, especially on the northern façade, with the highest quantities of chlorophyll a (17.1%), chlorophyll b (9.1%), and carotenoid pigments (7.5%). In addition, the leaf dehydration rate, as well as the amount of free water loss, were reduced on the northern façade of ‘Blackie’. Therefore, ‘Blackie’ can be recommended as a variety distinguished by its improved resistance to challenging environmental conditions, particularly drought.
    Type of Medium: Online Resource
    ISSN: 2311-7524
    URL: Article
    DOI: 10.3390/horticulturae10020133
    Language: English
    Publisher: MDPI AG
    Publication Date: 2024
    detail.hit.zdb_id: 2813983-5
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  • 10
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    Online Resource
    Changes in rhizosphere microbiome from halotolerant tomato are correlated with physiological and biochemical parameters of oxidative stress in plants
    Elsevier BV ; 2015
    In:  Journal of Biotechnology Vol. 208 ( 2015-08), p. S60-
    Details
    In: Journal of Biotechnology, Elsevier BV, Vol. 208 ( 2015-08), p. S60-
    Type of Medium: Online Resource
    ISSN: 0168-1656
    URL: Article
    DOI: 10.1016/j.jbiotec.2015.06.179
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2015
    detail.hit.zdb_id: 2016476-2
    SSG: 12
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