The Role of Transcriptional Regulation in Hybrid Vigor

Ramon Botet, Joost J.B. Keurentjes*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)


The genetic basis of hybrid vigor in plants remains largely unsolved but strong evidence suggests that variation in transcriptional regulation can explain many aspects of this phenomenon. Natural variation in transcriptional regulation is highly abundant in virtually all species and thus a potential source of heterotic variability. Allele Specific Expression (ASE), which is tightly linked to parent of origin effects and modulated by complex interactions in cis and in trans, is generally considered to play a key role in explaining the differences between hybrids and parental lines. Here we discuss the recent developments in elucidating the role of transcriptional variation in a number of aspects of hybrid vigor, thereby bridging old paradigms and hypotheses with contemporary research in various species.

Original languageEnglish
Article number410
JournalFrontiers in Plant Science
Publication statusPublished - 15 Apr 2020


  • Arabidopsis thaliana
  • breeding
  • gene expression
  • genetic regulation
  • heterosis
  • hybrid vigor
  • natural variation
  • speciation

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