Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.)
In recent years, special attention has been paid to climate change assessment and research into our changing environment. The greatest economic losses worldwide are due to the negative effects of drought stress and extreme temperature on the plants’ morphological, physiological, and biochemical prop...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/13/1716 |
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| author | Natalija Burbulis Aušra Blinstrubienė Aldona Baltušnikienė Justina Deveikytė |
| author_facet | Natalija Burbulis Aušra Blinstrubienė Aldona Baltušnikienė Justina Deveikytė |
| author_sort | Natalija Burbulis |
| collection | DOAJ |
| description | In recent years, special attention has been paid to climate change assessment and research into our changing environment. The greatest economic losses worldwide are due to the negative effects of drought stress and extreme temperature on the plants’ morphological, physiological, and biochemical properties which limit crop growth and productivity. Sweet basil (<i>Ocimum basilicum</i> L.) is one of the most popular plants widely grown around the world as a spice, as well a medicinal, aromatic plant. The seedlings with 5–6 true leaves were divided into two groups, and one group of seedlings was sprayed with 10 mM potassium bicarbonate (KHCO<sub>3</sub>). Three days after potassium bicarbonate treatment, half of the plants from each group were subjected to a water deficit (drought stress), and the other half were grown under stress-free conditions (well-watered). The present study aimed to evaluate the effect of potassium bicarbonate (KHCO<sub>3</sub>) on morphophysiological parameters, phenolics content and the antioxidant activity of basil under drought conditions. The application of potassium bicarbonate to drought stressed plants significantly increased the chlorophyll content, fresh and dry weight, phenolics content in the two of tested cultivars, and antioxidant activity, determined by DPPH and ABTS methods. Principal component analysis showed that the first factor was highly and positively related to all the investigated parameters. Hierarchical clustering analysis showed that the first cluster was formed by being well-watered, well-watered and sprayed with potassium bicarbonate, and grown under drought conditions and sprayed with potassium bicarbonate basil cultivars, while the second cluster was formed by all the tested cultivars grown under drought conditions. |
| first_indexed | 2024-03-09T12:39:56Z |
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| id | doaj.art-7ac415cfc8df4a09993c0903b4aa361d |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T12:39:56Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-7ac415cfc8df4a09993c0903b4aa361d2023-11-30T22:19:31ZengMDPI AGPlants2223-77472022-06-011113171610.3390/plants11131716Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.)Natalija Burbulis0Aušra Blinstrubienė1Aldona Baltušnikienė2Justina Deveikytė3Department of Plant Biology and Food Sciences, Vytautas Magnus University, Donelaicio Str. 58, 44248 Kaunas, LithuaniaDepartment of Plant Biology and Food Sciences, Vytautas Magnus University, Donelaicio Str. 58, 44248 Kaunas, LithuaniaDepartment of Plant Biology and Food Sciences, Vytautas Magnus University, Donelaicio Str. 58, 44248 Kaunas, LithuaniaDepartment of Plant Biology and Food Sciences, Vytautas Magnus University, Donelaicio Str. 58, 44248 Kaunas, LithuaniaIn recent years, special attention has been paid to climate change assessment and research into our changing environment. The greatest economic losses worldwide are due to the negative effects of drought stress and extreme temperature on the plants’ morphological, physiological, and biochemical properties which limit crop growth and productivity. Sweet basil (<i>Ocimum basilicum</i> L.) is one of the most popular plants widely grown around the world as a spice, as well a medicinal, aromatic plant. The seedlings with 5–6 true leaves were divided into two groups, and one group of seedlings was sprayed with 10 mM potassium bicarbonate (KHCO<sub>3</sub>). Three days after potassium bicarbonate treatment, half of the plants from each group were subjected to a water deficit (drought stress), and the other half were grown under stress-free conditions (well-watered). The present study aimed to evaluate the effect of potassium bicarbonate (KHCO<sub>3</sub>) on morphophysiological parameters, phenolics content and the antioxidant activity of basil under drought conditions. The application of potassium bicarbonate to drought stressed plants significantly increased the chlorophyll content, fresh and dry weight, phenolics content in the two of tested cultivars, and antioxidant activity, determined by DPPH and ABTS methods. Principal component analysis showed that the first factor was highly and positively related to all the investigated parameters. Hierarchical clustering analysis showed that the first cluster was formed by being well-watered, well-watered and sprayed with potassium bicarbonate, and grown under drought conditions and sprayed with potassium bicarbonate basil cultivars, while the second cluster was formed by all the tested cultivars grown under drought conditions.https://www.mdpi.com/2223-7747/11/13/1716antioxidant activityabiotic stresschlorophyllweightphenolic |
| spellingShingle | Natalija Burbulis Aušra Blinstrubienė Aldona Baltušnikienė Justina Deveikytė Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.) Plants antioxidant activity abiotic stress chlorophyll weight phenolic |
| title | Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.) |
| title_full | Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.) |
| title_fullStr | Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.) |
| title_full_unstemmed | Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.) |
| title_short | Foliar Spraying with Potassium Bicarbonate Reduces the Negative Impact of Drought Stress on Sweet Basil (<i>Ocimum basilicum</i> L.) |
| title_sort | foliar spraying with potassium bicarbonate reduces the negative impact of drought stress on sweet basil i ocimum basilicum i l |
| topic | antioxidant activity abiotic stress chlorophyll weight phenolic |
| url | https://www.mdpi.com/2223-7747/11/13/1716 |
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