What can the Viviparous-1 gene tell us about wheat pre-harvest sprouting?

L. Q. Xia, Y. Yang, Y. Z. Ma, X. M. Chen, Z. H. He, M. S. Röder, H. D. Jones, P. R. Shewry

Research output: Contribution to journalArticlepeer-review

20 Citations (SciVal)

Abstract

Pre-harvest sprouting (PHS) of wheat greatly reduces the quality and economic value of grain, and PHS tolerance is one of the most important traits in wheat breeding. Two new Vp-1B alleles were identified in wheat genotypes with distinct PHS tolerance and ABA responsiveness and designated as Vp-1Bb and Vp-1Bc. These alleles had an insertion of 193-bp and a deletion of 83-bp in the third intron in the region of B3 domain, respectively. Further analysis indicated that different Vp-1B alleles showed different expression and responsiveness to ABA exposure at transcriptional level, implying that they may regulate PHS tolerance. Based on these alleles, a STS marker Vp1B3 was developed and validated among a set of 89 Chinese wheat accessions. The results indicated that Vp1B3 may be useful as an efficient and reliable co-dominant marker in the evaluation of wheat germplasm for PHS tolerance and marker-assisted breeding for PHS tolerant cultivars. Moreover, analysis of a collection of 490 EU winter wheat varieties revealed not only the prevalence of Vp-1B alleles but also a new allele Vp-1Bd which does not occur in Chinese wheats.
Original languageEnglish
Pages (from-to)385-394
Number of pages10
JournalEuphytica
Volume168
Issue number3
DOIs
Publication statusPublished - Aug 2009

Keywords

  • Triticum aestivum L.
  • pre-harvest sprouting
  • Viviparous-1
  • allele

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