Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination
The megagametophyte of mature seeds of Araucaria angustifolia consists of cells with thin walls, one or more nuclei, a central vacuole storing proteins, and a cytoplasm rich in amyloplasts, mitochondria and lipid bodies. In this study, we describe the process of mobilization of reserves and analyzed...
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_1664462X_v9_n_p_Moyano |
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todo:paper_1664462X_v9_n_p_Moyano2023-10-03T16:29:12Z Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination Moyano, L. Correa, M.D. Favre, L.C. Rodríguez, F.S. Maldonado, S. López-Fernández, M.P. Araucaria angustifolia Cys-EP Germination Megagametophyte Nucleases PCD Starch The megagametophyte of mature seeds of Araucaria angustifolia consists of cells with thin walls, one or more nuclei, a central vacuole storing proteins, and a cytoplasm rich in amyloplasts, mitochondria and lipid bodies. In this study, we describe the process of mobilization of reserves and analyzed the dismantling of the tissue during germination, using a range of well-established markers of programmed cell death (PCD), including: morphological changes in nuclei and amyloplasts, DNA degradation, and changes in nuclease profiles. TUNEL reaction and DNA electrophoresis demonstrate that DNA fragmentation in nuclei occurs at early stages of germination, which correlates with induction of specific nucleases. The results of the present study add knowledge on the dismantling of the megagametophyte of genus Araucaria, a storage tissue that stores starch as the main reserve substance, as well as on the PCD pathway, by revealing new insights into the role of nucleases and the expression patterns of putative nuclease genes during germination. © 2018 Moyano, Correa, Favre, Rodríguez, Maldonado and López-Fernández. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1664462X_v9_n_p_Moyano |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Araucaria angustifolia Cys-EP Germination Megagametophyte Nucleases PCD Starch |
| spellingShingle |
Araucaria angustifolia Cys-EP Germination Megagametophyte Nucleases PCD Starch Moyano, L. Correa, M.D. Favre, L.C. Rodríguez, F.S. Maldonado, S. López-Fernández, M.P. Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| topic_facet |
Araucaria angustifolia Cys-EP Germination Megagametophyte Nucleases PCD Starch |
| description |
The megagametophyte of mature seeds of Araucaria angustifolia consists of cells with thin walls, one or more nuclei, a central vacuole storing proteins, and a cytoplasm rich in amyloplasts, mitochondria and lipid bodies. In this study, we describe the process of mobilization of reserves and analyzed the dismantling of the tissue during germination, using a range of well-established markers of programmed cell death (PCD), including: morphological changes in nuclei and amyloplasts, DNA degradation, and changes in nuclease profiles. TUNEL reaction and DNA electrophoresis demonstrate that DNA fragmentation in nuclei occurs at early stages of germination, which correlates with induction of specific nucleases. The results of the present study add knowledge on the dismantling of the megagametophyte of genus Araucaria, a storage tissue that stores starch as the main reserve substance, as well as on the PCD pathway, by revealing new insights into the role of nucleases and the expression patterns of putative nuclease genes during germination. © 2018 Moyano, Correa, Favre, Rodríguez, Maldonado and López-Fernández. |
| format |
JOUR |
| author |
Moyano, L. Correa, M.D. Favre, L.C. Rodríguez, F.S. Maldonado, S. López-Fernández, M.P. |
| author_facet |
Moyano, L. Correa, M.D. Favre, L.C. Rodríguez, F.S. Maldonado, S. López-Fernández, M.P. |
| author_sort |
Moyano, L. |
| title |
Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| title_short |
Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| title_full |
Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| title_fullStr |
Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| title_full_unstemmed |
Activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| title_sort |
activation of nucleases, pcd, and mobilization of reserves in the araucaria angustifolia megagametophyte during germination |
| url |
http://hdl.handle.net/20.500.12110/paper_1664462X_v9_n_p_Moyano |
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