Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants
The application of organic amendments, biochar, and wood distillate (WD), as well as the exposure to UV-B radiation, are two sustainable ways to enhance soil fertility and increase plant nutraceutical quality, respectively. However, they have always been studied separately, without testing the event...
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MDPI AG
2023-08-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/9/8/894 |
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| author | Marco Santin Michelangelo Becagli Maria Calogera Sciampagna Alessia Mannucci Annamaria Ranieri Antonella Castagna |
| author_facet | Marco Santin Michelangelo Becagli Maria Calogera Sciampagna Alessia Mannucci Annamaria Ranieri Antonella Castagna |
| author_sort | Marco Santin |
| collection | DOAJ |
| description | The application of organic amendments, biochar, and wood distillate (WD), as well as the exposure to UV-B radiation, are two sustainable ways to enhance soil fertility and increase plant nutraceutical quality, respectively. However, they have always been studied separately, without testing the eventual synergistic or antagonistic effect when applied together. The present study investigated the effects of biochar (2% <i>w</i>/<i>w</i>), WD (1:100), and their combination (BWD) on some biometric and biochemical parameters of basil plants (<i>Ocimum basilicum</i> L.) exposed to different doses of UV-B radiation (0, 1, 2 h d<sup>−1</sup>; UV-B irradiance of 1.36 W m<sup>−2</sup>) in controlled conditions. Root and stem length and weight were not affected by soil amendments, while 1 h d<sup>−1</sup> UV-B increased the length (+28%) and weight (+62%) of the aerial part. When combining the above- and below-ground factors, a decrease in root length was observed in the 2 h d<sup>−1</sup> UV-B-treated plants in both WD (−36%) and BWD (−39%) treatments. The co-application of below- and above-ground treatments generally decreased phenolic and flavonoid concentration in both fully expanded leaves and vegetative shoot apices. This preliminary study highlights an antagonistic action of the combination of the investigated factors, at these doses, on the plant growth and metabolism that should be considered. |
| first_indexed | 2024-03-10T23:52:59Z |
| format | Article |
| id | doaj.art-004cc6dcbfd24149a9b077a62bb3d0b9 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T23:52:59Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-004cc6dcbfd24149a9b077a62bb3d0b92023-11-19T01:21:20ZengMDPI AGHorticulturae2311-75242023-08-019889410.3390/horticulturae9080894Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) PlantsMarco Santin0Michelangelo Becagli1Maria Calogera Sciampagna2Alessia Mannucci3Annamaria Ranieri4Antonella Castagna5Department of Agriculture, Food and Environment, University of Pisa, 56124 Pisa, ItalyDepartment of Agriculture, Food and Environment, University of Pisa, 56124 Pisa, ItalyDepartment of Agriculture, Food and Environment, University of Pisa, 56124 Pisa, ItalyDepartment of Agriculture, Food and Environment, University of Pisa, 56124 Pisa, ItalyDepartment of Agriculture, Food and Environment, University of Pisa, 56124 Pisa, ItalyDepartment of Agriculture, Food and Environment, University of Pisa, 56124 Pisa, ItalyThe application of organic amendments, biochar, and wood distillate (WD), as well as the exposure to UV-B radiation, are two sustainable ways to enhance soil fertility and increase plant nutraceutical quality, respectively. However, they have always been studied separately, without testing the eventual synergistic or antagonistic effect when applied together. The present study investigated the effects of biochar (2% <i>w</i>/<i>w</i>), WD (1:100), and their combination (BWD) on some biometric and biochemical parameters of basil plants (<i>Ocimum basilicum</i> L.) exposed to different doses of UV-B radiation (0, 1, 2 h d<sup>−1</sup>; UV-B irradiance of 1.36 W m<sup>−2</sup>) in controlled conditions. Root and stem length and weight were not affected by soil amendments, while 1 h d<sup>−1</sup> UV-B increased the length (+28%) and weight (+62%) of the aerial part. When combining the above- and below-ground factors, a decrease in root length was observed in the 2 h d<sup>−1</sup> UV-B-treated plants in both WD (−36%) and BWD (−39%) treatments. The co-application of below- and above-ground treatments generally decreased phenolic and flavonoid concentration in both fully expanded leaves and vegetative shoot apices. This preliminary study highlights an antagonistic action of the combination of the investigated factors, at these doses, on the plant growth and metabolism that should be considered.https://www.mdpi.com/2311-7524/9/8/894biocharwood distillateultraviolet radiationbasilnutraceutical qualitysustainability |
| spellingShingle | Marco Santin Michelangelo Becagli Maria Calogera Sciampagna Alessia Mannucci Annamaria Ranieri Antonella Castagna Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants Horticulturae biochar wood distillate ultraviolet radiation basil nutraceutical quality sustainability |
| title | Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants |
| title_full | Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants |
| title_fullStr | Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants |
| title_full_unstemmed | Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants |
| title_short | Integrative Effect of UV-B and Some Organic Amendments on Growth, Phenolic and Flavonoid Compounds, and Antioxidant Activity of Basil (<i>Ocimum basilicum</i> L.) Plants |
| title_sort | integrative effect of uv b and some organic amendments on growth phenolic and flavonoid compounds and antioxidant activity of basil i ocimum basilicum i l plants |
| topic | biochar wood distillate ultraviolet radiation basil nutraceutical quality sustainability |
| url | https://www.mdpi.com/2311-7524/9/8/894 |
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