Publication Date:
2014-07-19
Description:
Allohexaploid bread wheat (Triticum aestivum L.) provides approximately 20% of calories consumed by humans. Lack of genome sequence for the three homeologous and highly similar bread wheat genomes (A, B, and D) has impeded expression analysis of the grain transcriptome. We used previously unknown genome information to analyze the cell type-specific expression of homeologous genes in the developing wheat grain and identified distinct co-expression clusters reflecting the spatiotemporal progression during endosperm development. We observed no global but cell type- and stage-dependent genome dominance, organization of the wheat genome into transcriptionally active chromosomal regions, and asymmetric expression in gene families related to baking quality. Our findings give insight into the transcriptional dynamics and genome interplay among individual grain cell types in a polyploid cereal genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfeifer, Matthias -- Kugler, Karl G -- Sandve, Simen R -- Zhan, Bujie -- Rudi, Heidi -- Hvidsten, Torgeir R -- International Wheat Genome Sequencing Consortium -- Mayer, Klaus F X -- Olsen, Odd-Arne -- New York, N.Y. -- Science. 2014 Jul 18;345(6194):1250091. doi: 10.1126/science.1250091.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Genome and Systems Biology, Helmholtz Center Munich, 85764 Neuherberg, Germany. ; Department of Plant Sciences/Centre for Integrative Genetics, The Norwegian University of Life Sciences (NMBU), 1432 Aas, Norway. ; Department of Chemistry, Biotechnology and Food Science, NMBU, 1432 Aas, Norway. ; Department of Plant Sciences/Centre for Integrative Genetics, The Norwegian University of Life Sciences (NMBU), 1432 Aas, Norway. odd-arne.olsen@nmbu.no.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25035498" target="_blank"〉PubMed〈/a〉
Keywords:
*Bread
;
Edible Grain/genetics
;
Endosperm/genetics
;
Gene Dosage
;
Gene Expression Regulation, Plant
;
*Genome, Plant
;
Plant Proteins/genetics
;
*Polyploidy
;
Transcriptome
;
Triticum/*genetics
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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