Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds
This study aimed at assessing the cell cycle, and anatomical and biochemical changes that the embryonic axis of Araucaria angustifolia undergoes during development, focusing on the maturation stage. During all development, cells exhibited intense metabolic activity with an abundance of mitochondria...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2019-07-01
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| Series: | Acta Scientiarum: Biological Sciences |
| Subjects: | |
| Online Access: | https://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43381 |
| _version_ | 1828827504702390272 |
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| author | Marília Shibata Cileide Maria Medeiros Coelho Eder Carlos Schmidt Zenilda Laurita Bouzon José Marcello Salabert de Campos Marcelo Maraschin |
| author_facet | Marília Shibata Cileide Maria Medeiros Coelho Eder Carlos Schmidt Zenilda Laurita Bouzon José Marcello Salabert de Campos Marcelo Maraschin |
| author_sort | Marília Shibata |
| collection | DOAJ |
| description |
This study aimed at assessing the cell cycle, and anatomical and biochemical changes that the embryonic axis of Araucaria angustifolia undergoes during development, focusing on the maturation stage. During all development, cells exhibited intense metabolic activity with an abundance of mitochondria, lipid bodies, and vacuolated cells. The continued accumulation of starch and protein was observed by LM and TEM and indicated by spectra of FTIR. Cell differentiation of the procambium was observed with a thickening of the cell wall and the formation of resiniferous ducts. At Stage III and IV, cells exhibited structural changes such as altered or elongated mitochondria and presence of plastoglobules. These results suggest that there is a gradual transition from developmental metabolism to germination metabolism. Such changes can contribute to the rapid germination of seeds right after their dispersion, making it an ecological strategy to reduce post-dispersal exposure to predators and to avoid damage from reduced moisture.
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| first_indexed | 2024-12-12T15:00:40Z |
| format | Article |
| id | doaj.art-3466a084dab646c89040b9bd33d2dfab |
| institution | Directory Open Access Journal |
| issn | 1679-9283 1807-863X |
| language | English |
| last_indexed | 2024-12-12T15:00:40Z |
| publishDate | 2019-07-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj.art-3466a084dab646c89040b9bd33d2dfab2022-12-22T00:20:48ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2019-07-0141110.4025/actascibiolsci.v41i1.4338143381Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seedsMarília Shibata0Cileide Maria Medeiros Coelho1Eder Carlos Schmidt2Zenilda Laurita Bouzon3José Marcello Salabert de Campos4Marcelo Maraschin5Universidade Federal Rural da AmazôniaUniversidade do Estado de Santa CatarinaUniversidade Federal de Santa CatarinaUniversidade Federal de Santa CatarinaUniversidade Federal de Juiz de ForaUniversidade Federal de Santa Catarina This study aimed at assessing the cell cycle, and anatomical and biochemical changes that the embryonic axis of Araucaria angustifolia undergoes during development, focusing on the maturation stage. During all development, cells exhibited intense metabolic activity with an abundance of mitochondria, lipid bodies, and vacuolated cells. The continued accumulation of starch and protein was observed by LM and TEM and indicated by spectra of FTIR. Cell differentiation of the procambium was observed with a thickening of the cell wall and the formation of resiniferous ducts. At Stage III and IV, cells exhibited structural changes such as altered or elongated mitochondria and presence of plastoglobules. These results suggest that there is a gradual transition from developmental metabolism to germination metabolism. Such changes can contribute to the rapid germination of seeds right after their dispersion, making it an ecological strategy to reduce post-dispersal exposure to predators and to avoid damage from reduced moisture. https://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43381maturationrecalcitrant seedlight microscopytransmission electron microscopyflow cytometry |
| spellingShingle | Marília Shibata Cileide Maria Medeiros Coelho Eder Carlos Schmidt Zenilda Laurita Bouzon José Marcello Salabert de Campos Marcelo Maraschin Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds Acta Scientiarum: Biological Sciences maturation recalcitrant seed light microscopy transmission electron microscopy flow cytometry |
| title | Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds |
| title_full | Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds |
| title_fullStr | Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds |
| title_full_unstemmed | Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds |
| title_short | Anatomical and biochemical changes associated with the development and germination of <i>Araucaria angustifolia</i> seeds |
| title_sort | anatomical and biochemical changes associated with the development and germination of i araucaria angustifolia i seeds |
| topic | maturation recalcitrant seed light microscopy transmission electron microscopy flow cytometry |
| url | https://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43381 |
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