Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit
Anthocyanins are plant pigments derived from the phenylpropanoid pathway which are produced in many different species, contributing to defense against stresses by their antioxidant properties. Cultivated tomatoes cannot synthesize flavonoids; however, wild tomatoes such as <i>Solanum chilense&...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Antioxidants |
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| Online Access: | https://www.mdpi.com/2076-3921/11/9/1639 |
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| author | Gerardo Tapia Monserrat Castro Carlos Gaete-Eastman Carlos R. Figueroa |
| author_facet | Gerardo Tapia Monserrat Castro Carlos Gaete-Eastman Carlos R. Figueroa |
| author_sort | Gerardo Tapia |
| collection | DOAJ |
| description | Anthocyanins are plant pigments derived from the phenylpropanoid pathway which are produced in many different species, contributing to defense against stresses by their antioxidant properties. Cultivated tomatoes cannot synthesize flavonoids; however, wild tomatoes such as <i>Solanum chilense</i> and <i>Solanum lycopersicoides</i> have anthocyanin pigmented skin. Other wild tomato species such as <i>Solanum peruvianum</i> have been poorly studied concerning anthocyanin accumulation in the fruit. This research is the first to address the regulation of anthocyanin biosynthesis mediated by drought stress and light radiation in <i>S. peruvianum</i> fruit. Transcript accumulation of <i>SpAN2</i>, encoding for a key MYB type transcription factor for the regulation of anthocyanin biosynthesis, was induced in the fruit of plants exposed to drought treatment. In addition, fruit peel accumulates a greater anthocyanin content in water deficit-treated plants. The expression of <i>SpAN2</i> was also regulated according to sunlight exposure, reaching a higher expression during maximal daily UV radiation and under controlled UV-B treatments. Similar results were observed for the expression of the late flavonoid biosynthetic gene dihydroflavonol 4-reductase (<i>SpDFR</i>). These results suggest that <i>SpAN2</i> and <i>SpDFR</i> are involved in anthocyanin biosynthesis under drought stress and UV radiation in <i>S. peruvianum</i>. |
| first_indexed | 2024-03-10T00:54:06Z |
| format | Article |
| id | doaj.art-af77f8135307421bb9f4bd8c91d56211 |
| institution | Directory Open Access Journal |
| issn | 2076-3921 |
| language | English |
| last_indexed | 2024-03-10T00:54:06Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Antioxidants |
| spelling | doaj.art-af77f8135307421bb9f4bd8c91d562112023-11-23T14:46:28ZengMDPI AGAntioxidants2076-39212022-08-01119163910.3390/antiox11091639Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) FruitGerardo Tapia0Monserrat Castro1Carlos Gaete-Eastman2Carlos R. Figueroa3Unidad de Recursos Genéticos, Instituto de Investigaciones Agropecuarias, INIA Quilamapu, Chillán 3800062, ChileFaculty of Forest Sciences, Universidad de Concepción, Concepción 4070386, ChileInstitute of Biological Sciences, Universidad de Talca, Talca 3465548, ChileLaboratory of Plant Molecular Physiology, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, ChileAnthocyanins are plant pigments derived from the phenylpropanoid pathway which are produced in many different species, contributing to defense against stresses by their antioxidant properties. Cultivated tomatoes cannot synthesize flavonoids; however, wild tomatoes such as <i>Solanum chilense</i> and <i>Solanum lycopersicoides</i> have anthocyanin pigmented skin. Other wild tomato species such as <i>Solanum peruvianum</i> have been poorly studied concerning anthocyanin accumulation in the fruit. This research is the first to address the regulation of anthocyanin biosynthesis mediated by drought stress and light radiation in <i>S. peruvianum</i> fruit. Transcript accumulation of <i>SpAN2</i>, encoding for a key MYB type transcription factor for the regulation of anthocyanin biosynthesis, was induced in the fruit of plants exposed to drought treatment. In addition, fruit peel accumulates a greater anthocyanin content in water deficit-treated plants. The expression of <i>SpAN2</i> was also regulated according to sunlight exposure, reaching a higher expression during maximal daily UV radiation and under controlled UV-B treatments. Similar results were observed for the expression of the late flavonoid biosynthetic gene dihydroflavonol 4-reductase (<i>SpDFR</i>). These results suggest that <i>SpAN2</i> and <i>SpDFR</i> are involved in anthocyanin biosynthesis under drought stress and UV radiation in <i>S. peruvianum</i>.https://www.mdpi.com/2076-3921/11/9/1639anthocyanindrought stressR2R3 MYB transcription factor<i>Solanum peruvianum</i>UV radiationwild tomato |
| spellingShingle | Gerardo Tapia Monserrat Castro Carlos Gaete-Eastman Carlos R. Figueroa Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit Antioxidants anthocyanin drought stress R2R3 MYB transcription factor <i>Solanum peruvianum</i> UV radiation wild tomato |
| title | Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit |
| title_full | Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit |
| title_fullStr | Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit |
| title_full_unstemmed | Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit |
| title_short | Regulation of Anthocyanin Biosynthesis by Drought and UV-B Radiation in Wild Tomato (<i>Solanum peruvianum</i>) Fruit |
| title_sort | regulation of anthocyanin biosynthesis by drought and uv b radiation in wild tomato i solanum peruvianum i fruit |
| topic | anthocyanin drought stress R2R3 MYB transcription factor <i>Solanum peruvianum</i> UV radiation wild tomato |
| url | https://www.mdpi.com/2076-3921/11/9/1639 |
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