The high grain protein content gene Gpc-B1 accelerates senescence and has pleiotropic effects on protein content in wheat
| العنوان: | The high grain protein content gene Gpc-B1 accelerates senescence and has pleiotropic effects on protein content in wheat |
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| المؤلفون: | Jorge Dubcovsky, Cristobal Uauy, Juan Carlos Brevis |
| المصدر: | Journal of experimental botany, vol 57, iss 11 Uauy, C; Brevis, JC; & Dubcovsky, J. (2006). The high grain protein content gene Gpc-B1 accelerates senescence and has pleiotropic effects on protein content in wheat. Journal of Experimental Botany, 57(11), 2785-2794. doi: 10.1093/jxb/erl047. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/9vn7j5mvTest |
| بيانات النشر: | eScholarship, University of California, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | Senescence, Chlorophyll, Crop and Pasture Production, grain protein content, senescence, Physiology, Plant Biology & Botany, Triticum turgidum ssp dicoccoides, Plant Biology, Locus (genetics), Plant Science, Biology, Genes, Plant, Protein content, Polyploidy, chemistry.chemical_compound, wheat, Genetics, Poaceae, Allele, Gene, Triticum, Alleles, Cellular Senescence, Plant Proteins, Plant physiology, food and beverages, Water, Plant, nitrogen remobilization, Physical Chromosome Mapping, chemistry, Genes, Cell Aging, thousand kernel weight |
| الوصف: | High grain protein content (GPC) is a frequent target of wheat breeding programmes because of its positive effect on bread and pasta quality. A wild wheat allele at the Gpc-B1 locus with a significant impact on this trait was identified previously. The precise mapping of several senescence-related traits in a set of tetraploid recombinant substitution lines (RSLs) segregating for Gpc-B1 is reported here. Flag leaf chlorophyll degradation, change in peduncle colour, and spike water content were completely linked to the Gpc-B1 locus and to the differences in GPC within a 0.3 cM interval corresponding to a physical distance of only 250 kb. The effect of Gpc-B1 was also examined in different environments and genetic backgrounds using a set of tetraploid and hexaploid pairs of isogenic lines. The results were consistent with those observed in the RSLs. The high GPC allele conferred a shorter duration of grain fill due to earlier flag leaf senescence and increased GPC in all four genetic backgrounds. The effect on grain size was more variable, depending on the genotype-environment combinations. These results are consistent with a model in which the wild-type allele of Gpc-B1 accelerates senescence in flag leaves producing pleiotropic effects on nitrogen remobilization, total GPC, and grain size. © The Author [2006]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. |
| وصف الملف: | application/pdf |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::796880015c9b7eeda48ad06d054499d0Test https://escholarship.org/uc/item/9vn7j5mvTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....796880015c9b7eeda48ad06d054499d0 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |