| Registro completo |
| Provedor de dados: |
Biological Sciences
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| País: |
Brazil
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| Título: |
Anatomical and biochemical changes associated with the development and germination of Araucaria angustifolia seeds
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| Autores: |
Shibata, Marília
Coelho, Cileide Maria Medeiros
Schmidt, Eder Carlos
Bouzon, Zenilda Laurita
Campos, José Marcello Salabert de
Maraschin, Marcelo
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| Data: |
2019-07-22
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| Ano: |
2019
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| Palavras-chave: |
2.03.00.00-0 Botânica
2.03.03.00-9 Fisiologia Vegetal
5.02.01.04-2 Sementes Florestais maturation
Recalcitrant seed
Light microscopy
Transmission electron microscopy
Flow cytometry Botânica
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| Resumo: |
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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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43381
10.4025/actascibiolsci.v41i1.43381
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| Editor: |
Universidade Estadual De Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43381/pdf
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/43381/19013
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/43381/19019
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| Formato: |
application/pdf
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| Fonte: |
Acta Scientiarum. Biological Sciences; v. 41 (2019): Publicação contínua; e43381
Acta Scientiarum. Biological Sciences; v. 41 (2019): Publicação contínua; e43381
1807-863X
1679-9283
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| Direitos: |
Direitos autorais 2019 Acta Scientiarum. Biological Sciences
http://creativecommons.org/licenses/by/4.0
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