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dc.contributor.author
Avni, Raz
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dc.contributor.author
Zhao, Rongrong
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Pearce, Stephen
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Jun, Yan
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Uauy, Cristobal
dc.contributor.author
Tabbita, Facundo
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dc.contributor.author
Fahima, Tzion
dc.contributor.author
Slade, Ann
dc.contributor.author
Dubcovsky, Jorge
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dc.contributor.author
Distelfeld, Assaf
dc.date.available
2019-10-15T21:09:05Z
dc.date.issued
2014-02
dc.identifier.citation
Avni, Raz; Zhao, Rongrong; Pearce, Stephen; Jun, Yan; Uauy, Cristobal; et al.; Functional characterization of GPC-1 genes in hexaploid wheat; Springer; Planta; 239; 2; 2-2014; 313-324
dc.identifier.issn
1432-2048
dc.identifier.uri
http://hdl.handle.net/11336/85984
dc.description.abstract
In wheat, monocarpic senescence is a tightly regulated process during which nitrogen (N) and micronutrients stored pre-anthesis are remobilized from vegetative tissues to the developing grains. Recently, a close connection between senescence and remobilization was shown through the map-based cloning of the GPC (grain protein content) gene in wheat. GPC-B1 encodes a NAC transcription factor associated with earlier senescence and increased grain protein, iron and zinc content, and is deleted or non-functional in most commercial wheat varieties. In the current research, we identified 'loss of function' ethyl methanesulfonate mutants for the two GPC-B1 homoeologous genes; GPC-A1 and GPC-D1, in a hexaploid wheat mutant population. The single gpc-a1 and gpc-d1 mutants, the double gpc-1 mutant and control lines were grown under field conditions at four locations and were characterized for senescence, GPC, micronutrients and yield parameters. Our results show a significant delay in senescence in both the gpc-a1 and gpc-d1 single mutants and an even stronger effect in the gpc-1 double mutant in all the environments tested in this study. The accumulation of total N in the developing grains showed a similar increase in the control and gpc-1 plants until 25 days after anthesis (DAA) but at 41 and 60 DAA the control plants had higher grain N content than the gpc-1 mutants. At maturity, GPC in all mutants was significantly lower than in control plants while grain weight was unaffected. These results demonstrate that the GPC-A1 and GPC-D1 genes have a redundant function and play a major role in the regulation of monocarpic senescence and nutrient remobilization in wheat.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GRAIN PROTEIN CONTENT
dc.subject
SENESCENCE
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WHEAT
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MUTANTS
dc.subject.classification
Biotecnología Agrícola y Biotecnología Alimentaria
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dc.subject.classification
Biotecnología Agropecuaria
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Functional characterization of GPC-1 genes in hexaploid wheat
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-10T17:50:59Z
dc.journal.volume
239
dc.journal.number
2
dc.journal.pagination
313-324
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Avni, Raz. Tel Aviv University; Israel
dc.description.fil
Fil: Zhao, Rongrong. China Agricultural University; República de China. University of California at Davis; Estados Unidos
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Fil: Pearce, Stephen. University of California at Davis; Estados Unidos
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Fil: Jun, Yan. University of Haifa; Israel
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Fil: Uauy, Cristobal. University of California at Davis; Estados Unidos
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Fil: Tabbita, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of California at Davis; Estados Unidos
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Fil: Fahima, Tzion. University of Haifa; Israel
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Fil: Slade, Ann. Arcadia Biosciences Inc.; Estados Unidos
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Fil: Dubcovsky, Jorge. University of California at Davis; Estados Unidos
dc.description.fil
Fil: Distelfeld, Assaf. Tel Aviv University; Israel
dc.journal.title
Planta
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00425-013-1977-y
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00425-013-1977-y
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