Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae)
Polyploidy has substantially contributed to successful plant evolution, and is often connected to a higher resilience to environmental stress. We test the hypothesis that polyploids tolerate light stress better than diploids. The <i>Ranunculus auricomus</i> complex comprises diploid (2x)...
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MDPI AG
2021-08-01
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| Online Access: | https://www.mdpi.com/2079-7737/10/8/811 |
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| author | Fuad Bahrul Ulum Franz Hadacek Elvira Hörandl |
| author_facet | Fuad Bahrul Ulum Franz Hadacek Elvira Hörandl |
| author_sort | Fuad Bahrul Ulum |
| collection | DOAJ |
| description | Polyploidy has substantially contributed to successful plant evolution, and is often connected to a higher resilience to environmental stress. We test the hypothesis that polyploids tolerate light stress better than diploids. The <i>Ranunculus auricomus</i> complex comprises diploid (2x), tetraploid (4x), and hexaploid (6x) cytotypes, the former of which occur in shaded habitats and the latter more in open, sun-exposed habitats in Central Europe. In this study, we experimentally explored the effects of ploidy and photoperiod extension on the efficiency of photosystem II in the three cytotypes in climate growth chambers. Quantum yields and various coefficients that can be calculated from light curve, Kautsky curve, and fluorescent transient OJIP experiments provided support for the hypothesis that, in comparison to diploids, the improved regulation of excess light by more efficient photochemical and non-chemical quenching in polyploids might have facilitated the adaptation to unshaded habitats. We suggest how lower stress levels in reproductive tissues of polyploids might have favored asexual reproduction. |
| first_indexed | 2024-03-10T09:00:20Z |
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| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-10T09:00:20Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-5f58fbcba8194ca9aea042efbb8042cd2023-11-22T06:50:51ZengMDPI AGBiology2079-77372021-08-0110881110.3390/biology10080811Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae)Fuad Bahrul Ulum0Franz Hadacek1Elvira Hörandl2Department of Systematics, Biodiversity and Evolution of Plants, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, 37073 Göttingen, GermanyDepartment of Plant Biochemistry, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, 37077 Göttingen, GermanyDepartment of Systematics, Biodiversity and Evolution of Plants, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, 37073 Göttingen, GermanyPolyploidy has substantially contributed to successful plant evolution, and is often connected to a higher resilience to environmental stress. We test the hypothesis that polyploids tolerate light stress better than diploids. The <i>Ranunculus auricomus</i> complex comprises diploid (2x), tetraploid (4x), and hexaploid (6x) cytotypes, the former of which occur in shaded habitats and the latter more in open, sun-exposed habitats in Central Europe. In this study, we experimentally explored the effects of ploidy and photoperiod extension on the efficiency of photosystem II in the three cytotypes in climate growth chambers. Quantum yields and various coefficients that can be calculated from light curve, Kautsky curve, and fluorescent transient OJIP experiments provided support for the hypothesis that, in comparison to diploids, the improved regulation of excess light by more efficient photochemical and non-chemical quenching in polyploids might have facilitated the adaptation to unshaded habitats. We suggest how lower stress levels in reproductive tissues of polyploids might have favored asexual reproduction.https://www.mdpi.com/2079-7737/10/8/811apomixisKautsky curveOJIPquantum yieldlight stressphotochemical quenching |
| spellingShingle | Fuad Bahrul Ulum Franz Hadacek Elvira Hörandl Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae) Biology apomixis Kautsky curve OJIP quantum yield light stress photochemical quenching |
| title | Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae) |
| title_full | Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae) |
| title_fullStr | Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae) |
| title_full_unstemmed | Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae) |
| title_short | Polyploidy Improves Photosynthesis Regulation within the <i>Ranunculus auricomus</i> Complex (Ranunculaceae) |
| title_sort | polyploidy improves photosynthesis regulation within the i ranunculus auricomus i complex ranunculaceae |
| topic | apomixis Kautsky curve OJIP quantum yield light stress photochemical quenching |
| url | https://www.mdpi.com/2079-7737/10/8/811 |
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