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dc.contributor.author
Burrieza, Hernán Pablo
dc.contributor.author
Sanguinetti, Agustin
dc.contributor.author
Michieli, Catalina Teresa
dc.contributor.author
Bertero, Hector Daniel
dc.contributor.author
Maldonado, Sara Beatriz
dc.date.available
2018-07-03T16:15:13Z
dc.date.issued
2016-12
dc.identifier.citation
Burrieza, Hernán Pablo; Sanguinetti, Agustin; Michieli, Catalina Teresa; Bertero, Hector Daniel; Maldonado, Sara Beatriz; Death of embryos from 2300-year-old quinoa seeds found in an archaeological site; Elsevier Ireland; Plant Science; 253; 12-2016; 107-117
dc.identifier.issn
0168-9452
dc.identifier.uri
http://hdl.handle.net/11336/51030
dc.description.abstract
In the 1970s, during excavations at Los Morrillos, San Juan, Argentina, quinoa seeds were found within ancient pumpkin crocks protected from the light and high temperatures, and preserved in the very dry conditions of the region. The radiocarbon dates confirmed the age of these seeds at around 2300 years. Sectioning of some of these seeds showed reddish-brown embryos, different from the white embryos of recently harvested quinoa seeds. The ancient seeds did not germinate. The structure of the embryo cells was examined using light and transmission electron microscopy; proteins were analyzed by electrophoresis followed by Coomassie blue and periodic acid Schiff staining and fatty acids by gas chromatography. The state of nuclear DNA was investigated by TUNEL assay, DAPI staining, ladder agarose electrophoresis and flow cytometry. Results suggest that, although the embryo tissues contained very low water content, death occurred by a cell death program in which heterochromatin density was dramatically reduced, total DNA was degraded into small fragments of less than 500 bp, and some proteins were modified by non-enzymatic glycation, generating Maillard products. Polyunsaturated fatty acids decreased and became fragmented, which could be attributable to the extensive oxidation of the most sensitive species (linolenic and linoleic acids) and associated with a collapse of lipid bodies.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Ireland
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Archaeological Seed
dc.subject
Chenopodium Quinoa Willd.
dc.subject
Fatty Acid Oxidation
dc.subject
Necrosis
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Programmed Cell Death
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Protein Glcation
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.subject.classification
Historia
dc.subject.classification
Historia y Arqueología
dc.subject.classification
HUMANIDADES
dc.title
Death of embryos from 2300-year-old quinoa seeds found in an archaeological site
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-22T14:39:04Z
dc.journal.volume
253
dc.journal.pagination
107-117
dc.journal.pais
Irlanda
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Burrieza, Hernán Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina
dc.description.fil
Fil: Sanguinetti, Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina
dc.description.fil
Fil: Michieli, Catalina Teresa. Universidad Nacional de San Juan. Facultad de Filosofía, Humanidades y Artes. Instituto de Investigaciones Arqueológicas y Museo "Mariano Gambier"; Argentina
dc.description.fil
Fil: Bertero, Hector Daniel. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Maldonado, Sara Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina
dc.journal.title
Plant Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pubmed/27968979
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.plantsci.2016.10.001
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0168945216305222
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