Programmed cell death during quinoa perisperm development
At seed maturity, quinoa (Chenopodium quinoa Willd.) perisperm consists of uniform, non-living, thin-walled cells full of starch grains. The objective of the present study was to study quinoa perisperm development and describe the programme of cell death that affects the entire tissue. A number of p...
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todo:paper_00220957_v64_n11_p3313_LopezFernandez2023-10-03T14:26:15Z Programmed cell death during quinoa perisperm development López-Fernández, M.P. Maldonado, S. Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. peptide hydrolase vegetable protein Amaranthaceae apoptosis article caspase-like protease Chenopodium quinoa cytology DNA fragmentation endoreduplication genetics kinetosome metabolism nucleases perisperm physiology plant seed programmed cell death (PCD) starch accumulation TUNEL. Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. Apoptosis Chenopodium quinoa DNA Fragmentation Peptide Hydrolases Plant Proteins Seeds At seed maturity, quinoa (Chenopodium quinoa Willd.) perisperm consists of uniform, non-living, thin-walled cells full of starch grains. The objective of the present study was to study quinoa perisperm development and describe the programme of cell death that affects the entire tissue. A number of parameters typically measured during programmed cell death (PCD), such as cellular morphological changes in nuclei and cytoplasm, endoreduplication, DNA fragmentation, and the participation of nucleases and caspase-like proteases in nucleus dismantling, were evaluated; morphological changes in cytoplasm included subcellular aspects related to starch accumulation. This study proved that, following fertilization, the perisperm of quinoa simultaneously accumulates storage reserves and degenerates, both processes mediated by a programme of developmentally controlled cell death. The novel findings regarding perisperm development provide a starting point for further research in the Amaranthaceae genera, such as comparing seeds with and without perisperm, and specifying phylogeny and evolution within this taxon. Wherever possible and appropriate, differences between quinoa perisperm and grass starchy endosperm-a morphologically and functionally similar, although genetically different tissue-were highlighted and discussed. © The Author [2013]. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00220957_v64_n11_p3313_LopezFernandez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. peptide hydrolase vegetable protein Amaranthaceae apoptosis article caspase-like protease Chenopodium quinoa cytology DNA fragmentation endoreduplication genetics kinetosome metabolism nucleases perisperm physiology plant seed programmed cell death (PCD) starch accumulation TUNEL. Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. Apoptosis Chenopodium quinoa DNA Fragmentation Peptide Hydrolases Plant Proteins Seeds |
| spellingShingle |
Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. peptide hydrolase vegetable protein Amaranthaceae apoptosis article caspase-like protease Chenopodium quinoa cytology DNA fragmentation endoreduplication genetics kinetosome metabolism nucleases perisperm physiology plant seed programmed cell death (PCD) starch accumulation TUNEL. Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. Apoptosis Chenopodium quinoa DNA Fragmentation Peptide Hydrolases Plant Proteins Seeds López-Fernández, M.P. Maldonado, S. Programmed cell death during quinoa perisperm development |
| topic_facet |
Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. peptide hydrolase vegetable protein Amaranthaceae apoptosis article caspase-like protease Chenopodium quinoa cytology DNA fragmentation endoreduplication genetics kinetosome metabolism nucleases perisperm physiology plant seed programmed cell death (PCD) starch accumulation TUNEL. Amaranthaceae basal body caspase-like protease DNA fragmentation endoreduplication nucleases perisperm programmed cell death (PCD) quinoa starch accumulation TUNEL. Apoptosis Chenopodium quinoa DNA Fragmentation Peptide Hydrolases Plant Proteins Seeds |
| description |
At seed maturity, quinoa (Chenopodium quinoa Willd.) perisperm consists of uniform, non-living, thin-walled cells full of starch grains. The objective of the present study was to study quinoa perisperm development and describe the programme of cell death that affects the entire tissue. A number of parameters typically measured during programmed cell death (PCD), such as cellular morphological changes in nuclei and cytoplasm, endoreduplication, DNA fragmentation, and the participation of nucleases and caspase-like proteases in nucleus dismantling, were evaluated; morphological changes in cytoplasm included subcellular aspects related to starch accumulation. This study proved that, following fertilization, the perisperm of quinoa simultaneously accumulates storage reserves and degenerates, both processes mediated by a programme of developmentally controlled cell death. The novel findings regarding perisperm development provide a starting point for further research in the Amaranthaceae genera, such as comparing seeds with and without perisperm, and specifying phylogeny and evolution within this taxon. Wherever possible and appropriate, differences between quinoa perisperm and grass starchy endosperm-a morphologically and functionally similar, although genetically different tissue-were highlighted and discussed. © The Author [2013]. |
| format |
JOUR |
| author |
López-Fernández, M.P. Maldonado, S. |
| author_facet |
López-Fernández, M.P. Maldonado, S. |
| author_sort |
López-Fernández, M.P. |
| title |
Programmed cell death during quinoa perisperm development |
| title_short |
Programmed cell death during quinoa perisperm development |
| title_full |
Programmed cell death during quinoa perisperm development |
| title_fullStr |
Programmed cell death during quinoa perisperm development |
| title_full_unstemmed |
Programmed cell death during quinoa perisperm development |
| title_sort |
programmed cell death during quinoa perisperm development |
| url |
http://hdl.handle.net/20.500.12110/paper_00220957_v64_n11_p3313_LopezFernandez |
| work_keys_str_mv |
AT lopezfernandezmp programmedcelldeathduringquinoaperispermdevelopment AT maldonados programmedcelldeathduringquinoaperispermdevelopment |
| _version_ |
1807320248434556928 |