Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition
ABSTRACT In 2019, the atmospheric CO2 concentration exceeded the 415 ppm milestone for the first time in the human history. According to projections of the Intergovernmental Panel on Climate Change (IPCC), CO2 levels will continue to rise in the future, potentially affecting all living organisms. Pl...
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| Format: | Article |
| Language: | English |
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Sociedade Botânica do Brasil
2020-10-01
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| Series: | Acta Botânica Brasílica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300589&tlng=en |
| _version_ | 1818978881353285632 |
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| author | Patricia Sitta Innocente Simone Pádua Teixeira Tiago Santana Balbuena |
| author_facet | Patricia Sitta Innocente Simone Pádua Teixeira Tiago Santana Balbuena |
| author_sort | Patricia Sitta Innocente |
| collection | DOAJ |
| description | ABSTRACT In 2019, the atmospheric CO2 concentration exceeded the 415 ppm milestone for the first time in the human history. According to projections of the Intergovernmental Panel on Climate Change (IPCC), CO2 levels will continue to rise in the future, potentially affecting all living organisms. Plants with C3 metabolism may benefit from rising CO2 levels because the significant losses of photosynthesis, driven by photorespiration could be diminished under this scenario. This study addressed the anatomical changes in the stems of young Eucalyptus urophylla plants induced through cultivation in elevated CO2 (eCO2). Plants cultivated under eCO2 showed increased stem diameter (i.e., radial width of the secondary xylem, secondary phloem and cortex tissues). Periodic acid-Schiff (PAS)/Toluidine Blue staining suggested a decrease in the lignification content in the newly formed tissues of eCO2 stimulated plants. Levels of caffeate/5-hydroxyferulate O-methyltransferase form 1 (COMT1), a lignin biosynthesis specific proteoform, were significantly reduced in stem sections, supporting our findings: eCO2 induces plant growth, but reduces lignified tissues. |
| first_indexed | 2024-12-20T16:50:41Z |
| format | Article |
| id | doaj.art-3292a87b006c44c1917f934e4bc9f9cd |
| institution | Directory Open Access Journal |
| issn | 1677-941X |
| language | English |
| last_indexed | 2024-12-20T16:50:41Z |
| publishDate | 2020-10-01 |
| publisher | Sociedade Botânica do Brasil |
| record_format | Article |
| series | Acta Botânica Brasílica |
| spelling | doaj.art-3292a87b006c44c1917f934e4bc9f9cd2022-12-21T19:32:49ZengSociedade Botânica do BrasilActa Botânica Brasílica1677-941X2020-10-0134358959110.1590/0102-33062020abb0107Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin depositionPatricia Sitta Innocentehttps://orcid.org/0000-0003-0642-2653Simone Pádua Teixeirahttps://orcid.org/0000-0003-4993-101XTiago Santana Balbuenahttps://orcid.org/0000-0002-1053-0254ABSTRACT In 2019, the atmospheric CO2 concentration exceeded the 415 ppm milestone for the first time in the human history. According to projections of the Intergovernmental Panel on Climate Change (IPCC), CO2 levels will continue to rise in the future, potentially affecting all living organisms. Plants with C3 metabolism may benefit from rising CO2 levels because the significant losses of photosynthesis, driven by photorespiration could be diminished under this scenario. This study addressed the anatomical changes in the stems of young Eucalyptus urophylla plants induced through cultivation in elevated CO2 (eCO2). Plants cultivated under eCO2 showed increased stem diameter (i.e., radial width of the secondary xylem, secondary phloem and cortex tissues). Periodic acid-Schiff (PAS)/Toluidine Blue staining suggested a decrease in the lignification content in the newly formed tissues of eCO2 stimulated plants. Levels of caffeate/5-hydroxyferulate O-methyltransferase form 1 (COMT1), a lignin biosynthesis specific proteoform, were significantly reduced in stem sections, supporting our findings: eCO2 induces plant growth, but reduces lignified tissues.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300589&tlng=encarbon dioxideclimate changeEucalyptusligninplant stressstem anatomy |
| spellingShingle | Patricia Sitta Innocente Simone Pádua Teixeira Tiago Santana Balbuena Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition Acta Botânica Brasílica carbon dioxide climate change Eucalyptus lignin plant stress stem anatomy |
| title | Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition |
| title_full | Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition |
| title_fullStr | Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition |
| title_full_unstemmed | Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition |
| title_short | Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition |
| title_sort | elevated atmospheric co2 increases eucalyptus urophylla s t blake stem diameter by stimulating cell proliferation and reducing lignin deposition |
| topic | carbon dioxide climate change Eucalyptus lignin plant stress stem anatomy |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300589&tlng=en |
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