Home LiteratureArticle Details
PMID: 17600208 Published · ppublish English Journal Article Research Support, N.I.H., Extramural Review

Genome plasticity a key factor in the success of polyploid wheat under domestication.

Science (New York, N.Y.) ·Vol. 316 ·No. 5833 ·2007-06-29 ·Pages 1862-6

Dubcovsky J, Dvorak J

Abstract

Wheat was domesticated about 10,000 years ago and has since spread worldwide to become one of the major crops. Its adaptability to diverse environments and end uses is surprising given the diversity bottlenecks expected from recent domestication and polyploid speciation events. Wheat compensates for these bottlenecks by capturing part of the genetic diversity of its progenitors and by generating new diversity at a relatively fast pace. Frequent gene deletions and disruptions generated by a fast replacement rate of repetitive sequences are buffered by the polyploid nature of wheat, resulting in subtle dosage effects on which selection can operate.

MeSH Terms
Archaeology Crops, Agricultural/genetics,growth & development DNA, Intergenic Gene Deletion Gene Dosage Gene Duplication Gene Expression Genes, Plant Genetic Speciation Genetic Variation Genome, Plant Hybridization, Genetic Mutation Polymorphism, Restriction Fragment Length Polyploidy Repetitive Sequences, Nucleic Acid Triticum/genetics,growth & development
Chemicals
DNA, Intergenic
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Dubcovsky Jorge
Department of Plant Sciences, University of California, One Shields Avenue, Davis, CA 95616, USA. [email protected]
Dvorak Jan
References (42)
42 references, click to expand
  1. Transcriptional activation of retrotransposons alters the expression of adjacent genes in wheat.
    Nat Genet. 2003 Jan;33(1):102-6 PMID: 12483211
  2. Dynamics of the evolution of orthologous and paralogous portions of a complex locus region in two genomes of allopolyploid wheat.
    Plant Mol Biol. 2004 Jan;54(1):55-69 PMID: 15159634
  3. The wheat VRN2 gene is a flowering repressor down-regulated by vernalization.
    Science. 2004 Mar 12;303(5664):1640-4 PMID: 15016992
  4. Sequence elimination and cytosine methylation are rapid and reproducible responses of the genome to wide hybridization and allopolyploidy in wheat.
    Plant Cell. 2001 Aug;13(8):1749-59 PMID: 11487690
  5. The effects of artificial selection on the maize genome.
    Science. 2005 May 27;308(5726):1310-4 PMID: 15919994
  6. Genome size and the proportion of repeated nucleotide sequence DNA in plants.
    Biochem Genet. 1974 Oct;12(4):257-69 PMID: 4441361
  7. The high grain protein content gene Gpc-B1 accelerates senescence and has pleiotropic effects on protein content in wheat.
    J Exp Bot. 2006;57(11):2785-94 PMID: 16831844
  8. Wheat grain hardness results from highly conserved mutations in the friabilin components puroindoline a and b.
    Proc Natl Acad Sci U S A. 1998 May 26;95(11):6262-6 PMID: 9600953
  9. Stochastic and epigenetic changes of gene expression in Arabidopsis polyploids.
    Genetics. 2004 Aug;167(4):1961-73 PMID: 15342533
  10. Different types and rates of genome evolution detected by comparative sequence analysis of orthologous segments from four cereal genomes.
    Genetics. 2002 Nov;162(3):1389-400 PMID: 12454082
  11. Nucleotide polymorphism in the Adh1 locus of pearl millet (Pennisetum glaucum) (Poaceae).
    Genetics. 1993 Dec;135(4):1091-7 PMID: 7905843
  12. Plant genome organisation and diversity: the year of the junk!
    Curr Opin Biotechnol. 2006 Apr;17(2):168-73 PMID: 16530402
  13. Genetics and geography of wild cereal domestication in the near east.
    Nat Rev Genet. 2002 Jun;3(6):429-41 PMID: 12042770
  14. Identification and mapping of genetic loci affecting the free-threshing habit and spike compactness in wheat ( Triticum aestivum L.).
    Theor Appl Genet. 2004 Jan;108(2):261-73 PMID: 13679977
  15. Types and rates of sequence evolution at the high-molecular-weight glutenin locus in hexaploid wheat and its ancestral genomes.
    Genetics. 2006 Nov;174(3):1493-504 PMID: 17028342
  16. A reconsideration of the domestication geography of tetraploid wheats.
    Theor Appl Genet. 2005 Apr;110(6):1052-60 PMID: 15714326
  17. Molecular diversity, structure and domestication of grasses.
    Genet Res. 2001 Jun;77(3):213-8 PMID: 11486504
  18. Allelic variation at the VRN-1 promoter region in polyploid wheat.
    Theor Appl Genet. 2004 Nov;109(8):1677-86 PMID: 15480533
  19. Rapid genome divergence at orthologous low molecular weight glutenin loci of the A and Am genomes of wheat.
    Plant Cell. 2003 May;15(5):1186-97 PMID: 12724543
  20. Map-based analysis of genes affecting the brittle rachis character in tetraploid wheat (Triticum turgidum L.).
    Theor Appl Genet. 2006 Jan;112(2):373-81 PMID: 16328232
  21. Transposable elements as sources of variation in animals and plants.
    Proc Natl Acad Sci U S A. 1997 Jul 22;94(15):7704-11 PMID: 9223252
  22. Tempos of gene locus deletions and duplications and their relationship to recombination rate during diploid and polyploid evolution in the Aegilops-Triticum alliance.
    Genetics. 2005 Sep;171(1):323-32 PMID: 15996988
  23. Regulation of VRN-1 vernalization genes in normal and transgenic polyploid wheat.
    Plant Physiol. 2005 Aug;138(4):2364-73 PMID: 16055679
  24. Transposable elements, genes and recombination in a 215-kb contig from wheat chromosome 5A(m).
    Funct Integr Genomics. 2002 May;2(1-2):70-80 PMID: 12021852
  25. Deletion polymorphism in wheat chromosome regions with contrasting recombination rates.
    Genetics. 2004 Nov;168(3):1665-75 PMID: 15579715
  26. The structure of wild and domesticated emmer wheat populations, gene flow between them, and the site of emmer domestication.
    Theor Appl Genet. 2007 Apr;114(6):947-59 PMID: 17318496
  27. Grinding up wheat: a massive loss of nucleotide diversity since domestication.
    Mol Biol Evol. 2007 Jul;24(7):1506-17 PMID: 17443011
  28. Mechanisms and rates of birth and death of dispersed duplicated genes during the evolution of a multigene family in diploid and tetraploid wheats.
    Mol Biol Evol. 2007 Feb;24(2):539-50 PMID: 17135334
  29. Genomic changes in synthetic Arabidopsis polyploids.
    Plant J. 2005 Jan;41(2):221-30 PMID: 15634199
  30. Distribution of wild wheats and barley.
    Science. 1966 Sep 2;153(3740):1074-80 PMID: 17737582
  31. Molecular basis of evolutionary events that shaped the hardness locus in diploid and polyploid wheat species (Triticum and Aegilops).
    Plant Cell. 2005 Apr;17(4):1033-45 PMID: 15749759
  32. A reverse genetic, nontransgenic approach to wheat crop improvement by TILLING.
    Nat Biotechnol. 2005 Jan;23(1):75-81 PMID: 15580263
  33. Plant science. Unfallen grains: how ancient farmers turned weeds into crops.
    Science. 2006 Jun 2;312(5778):1318-9 PMID: 16741100
  34. A NAC Gene regulating senescence improves grain protein, zinc, and iron content in wheat.
    Science. 2006 Nov 24;314(5803):1298-301 PMID: 17124321
  35. Identification of a transposon-like insertion in a Glu-1 allele of wheat.
    Mol Gen Genet. 1987 Sep;209(2):326-32 PMID: 17191344
  36. Molecular characterization of a diagnostic DNA marker for domesticated tetraploid wheat provides evidence for gene flow from wild tetraploid wheat to hexaploid wheat.
    Mol Biol Evol. 2006 Jul;23(7):1386-96 PMID: 16675504
  37. Large deletions within the first intron in VRN-1 are associated with spring growth habit in barley and wheat.
    Mol Genet Genomics. 2005 Mar;273(1):54-65 PMID: 15690172
  38. The wheat and barley vernalization gene VRN3 is an orthologue of FT.
    Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19581-6 PMID: 17158798
  39. How fast was wild wheat domesticated?
    Science. 2006 Mar 31;311(5769):1886 PMID: 16574859
  40. Genome evolution in polyploids.
    Plant Mol Biol. 2000 Jan;42(1):225-49 PMID: 10688139
  41. Mechanisms of genomic rearrangements and gene expression changes in plant polyploids.
    Bioessays. 2006 Mar;28(3):240-52 PMID: 16479580
  42. Molecular characterization of the major wheat domestication gene Q.
    Genetics. 2006 Jan;172(1):547-55 PMID: 16172507
Article Info
Journal
Science (New York, N.Y.)
Abbr.
Science
ISSN
1095-9203
DOI
10.1126/science.1143986
Email
[email protected]
Published
2007-06-29
Pages
1862-6
Language
English
Region
United States
NLM ID
0404511
PMCID
PMC4737438
Subset
IM
Grants
Howard Hughes Medical Institute · United States
Corrections
ErratumIn
-
External Links
PubMed source DOI: 10.1126/science.1143986 PMC Full Text View journal details
Analysis Services
Analysis Services

Contact

No. 2 Wenbo Road, Zhangqiu District, Jinan, Shandong

Qilu Normal University · Genelibs Bioinformatics Lab

750 Shunhua Rd, Jinan

2F, Bldg F, University Science Park

Tel: 0531-88819269

WeChat Official Account

Follow our WeChat subscription account for real-time updates and the latest in medical and biological research.


Business Email

E-mail: [email protected]

Copyright © 2026.Genelibs Jinan Honghui Biotechnology Co., Ltd. 鲁ICP备20007159号-2