scholarly journals Effect of nitrogen regulation on berry quality and flavonoids during veraison stage

2021 ◽  
Author(s):  
Yueran Hui ◽  
Jing Wang ◽  
Tingting Jiang ◽  
Tinghui Ma ◽  
Rui Wang
Keyword(s):  
Nitrogen Regulation ◽  
Berry Quality

scholarly journals The Exploitation of Local Vitis vinifera L. Biodiversity as a Valuable Tool to Cope with Climate Change Maintaining Berry Quality

Plants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 71
Author(s):  
María Carmen Antolín ◽  
María Toledo ◽  
Inmaculada Pascual ◽  
Juan José Irigoyen ◽  
Nieves Goicoechea
Keyword(s):  
Climate Change ◽  
Fruit Quality ◽  
Atmospheric Carbon Dioxide ◽  
Antioxidant Properties ◽  
Co2 Concentration ◽  
Soluble Solids ◽  
Vitis Vinifera L ◽  
Grape Quality ◽  
Berry Quality ◽  
Carbon Dioxide Co2

(1) Background: The associated increase in global mean surface temperature together with raised atmospheric carbon dioxide (CO2) concentration is exerting a profound influence on grapevine development (phenology) and grape quality. The exploitation of the local genetic diversity based on the recovery of ancient varieties has been proposed as an interesting option to cope with climate change and maintaining grape quality. Therefore, this research aimed to characterize the potential fruit quality of genotypes from seven local old grapevine varieties grown under climate change conditions. (2) Methods: The study was carried out on fruit-bearing cuttings (one cluster per plant) that were grown in pots in temperature gradient greenhouses (TGG). Two treatments were applied from fruit set to maturity: (1) ambient CO2 (400 ppm) and temperature (T) (ACAT) and (2) elevated CO2 (700 ppm) and temperature (T + 4 °C) (ECET). (3) Results: Results showed that some of the old genotypes tested remained quite stable during the climate change conditions in terms of fruit quality (mainly, total soluble solids and phenolic content) and of must antioxidant properties. (4) Conclusion: This research underlines the usefulness of exploiting local grapevine diversity to cope with climate change successfully, although further studies under field conditions and with whole plants are needed before extrapolating the results to the vineyard.

Enhancing L-malate production of Aspergillus oryzae by nitrogen regulation strategy

2021 ◽  
Author(s):  
Lihao Ji ◽  
Ju Wang ◽  
Qiuling Luo ◽  
Qiang Ding ◽  
Wenxiu Tang ◽  
...  
Keyword(s):  
Aspergillus Oryzae ◽  
Nitrogen Regulation

scholarly journals Urea-Doped Calcium Phosphate Nanoparticles as Sustainable Nitrogen Nanofertilizers for Viticulture: Implications on Yield and Quality of Pinot Gris Grapevines

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1026
Author(s):  
Federica Gaiotti ◽  
Marco Lucchetta ◽  
Giacomo Rodegher ◽  
Daniel Lorenzoni ◽  
Edoardo Longo ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Nitrogen Source ◽  
Foliar Application ◽  
N Fertilization ◽  
Plant Nitrogen ◽  
Yield And Quality ◽  
Berry Quality ◽  
Potential Benefits ◽  
Calcium Phosphate Nanoparticles

In recent years, the application of nanotechnology for the development of new “smart fertilizers” is regarded as one of the most promising solutions for boosting a more sustainable and modern grapevine cultivation. Despite showing interesting potential benefits over conventional fertilization practices, the use of nanofertilizers in viticulture is still underexplored. In this work, we investigated the effectiveness of non-toxic calcium phosphate nanoparticles (Ca3(PO4)2∙nH2O) doped with urea (U-ACP) as a nitrogen source for grapevine fertilization. Plant tests were performed for two years (2019–2020) on potted adult Pinot gris cv. vines grown under semi-controlled conditions. Four fertilization treatments were compared: N1: commercial granular fertilization (45 kg N ha−1); N2: U-ACP applied in fertigation (36 kg N ha−1); N3: foliar application of U-ACP (36 kg N ha−1); C: control, receiving no N fertilization. Plant nitrogen status (SPAD), yield parameters as well as those of berry quality were analyzed. Results here presented clearly show the capability of vine plants to recognize and use the nitrogen supplied with U-ACP nanoparticles either when applied foliarly or to the soil. Moreover, all of the quali–quantitative parameters measured in vine plants fed with nanoparticles were perfectly comparable to those of plants grown in conventional condition, despite the restrained dosage of nitrogen applied with the nanoparticles. Therefore, these results provide both clear evidence of the efficacy of U-ACP nanoparticles as a nitrogen source and the basis for the development of alternative nitrogen fertilization strategies, optimizing the dosage/benefit ratio and being particularly interesting in a context of a more sustainable and modern viticulture.

Nitrogen regulation of amino acid catabolism in Neurospora crassa

1978 ◽  
Vol 16 (3-4) ◽  
pp. 343-354 ◽  
Author(s):  
Thomas J. Facklam ◽  
George A. Marzluf
Keyword(s):  
Amino Acid ◽  
Neurospora Crassa ◽  
Nitrogen Regulation ◽  
Amino Acid Catabolism

Effects on Plant Hormone levels at Different Growth Stages in Diverse Grape Organs with Root Restriction

2021 ◽  
Author(s):  
Jiajia Li ◽  
Dongmei Li ◽  
Boyang Liu ◽  
Ruiqi Wang ◽  
Yixuan Yan ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Abscisic Acid ◽  
Plant Hormones ◽  
Growth Stages ◽  
Indolebutyric Acid ◽  
Hormone Levels ◽  
Berry Quality ◽  
Isopentenyl Adenine ◽  
Root Restriction ◽  
Different Growth Stages

Abstract Endogenous plant hormones play important roles in germination, blossom, senescence, abscission of plants by a series of signal transduction and molecular regulation. The purpose of this research was to investigate the influence of root restriction (RR) cultivation on plant hormones variation tendency at different growth stages in diverse organs or tissues, ‘Muscat Hamburg’ (Vitis ‘Muscat of Alexandria’ × Vitis ‘Trollinger’) grapevine was used as test material. High Performance Liquid Chromatography (HPLC) was used to quantify hormone levels, aiming to investigate the influence of root restriction on the formation and transportation of plant hormones. The results revealed that RR treatment increased abscisic acid, salicylic acid, zeatin riboside, N6-(delta 2-isopentenyl)-adenine nucleoside concentrations, while reduced auxin, 3-indolepropionic acid, 3-indolebutyric acid, gibberellin A3, zeatin, N6-(delta 2-Isopentenyl)-adenine, kinetin, jasmonic acid and methyl jasmonate concentrations. To sum up, our results suggested that RR treatment could initiate stress responses via up-regulating abscisic acid and salicylic acid contents while down-regulating auxin and kinetin contents, resulting in the changes of fruit appearance and improvement of berry quality.

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