Regulation of gene expression by manipulating transcriptional repressor activity using a novel CoSRI technology
Targeted gene manipulation is a central strategy for studying gene function and identifying related biological processes. However, a methodology for manipulating the regulatory motifs of transcription factors is lacking as these factors commonly possess multiple motifs (e.g. repression and activation motifs) which collaborate with each other to regulate multiple biological processes. We describe a novel approach designated conserved sequence-guided repressor inhibition (CoSRI) that can specifically reduce or abolish the repressive activities of transcription factors in vivo. The technology was evaluated using the chimeric MYB80-EAR transcription factor and subsequently the endogenous WUS transcription factor. The technology was employed to develop a reversible male sterility system applicable to hybrid seed production. In order to determine the capacity of the technology to regulate the activity of endogenous transcription factors, the WUS repressor was chosen. The WUS repression motif could be inhibited in vivo and the transformed plants exhibited the wus-1 phenotype. Consequently, the technology can be used to manipulate the activities of transcriptional repressor motifs regulating beneficial traits in crop plants and other eukaryotic organisms.
JournalPlant Biotechnology Journal
Pagination15p. (p. 879-893)
Rights Statement© 2016 The Authors. Plant Biotechnology Journal published by Society for Experimental Biology and The Association of Applied Biologists and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Science & TechnologyLife Sciences & BiomedicineBiotechnology & Applied MicrobiologyPlant Sciencestranscriptional repressorConserved Sequence-guided Repressor Inhibition (CoSRI)MYB80WUSCHELTOPLESShybrid seed productionARABIDOPSIS SHOOT MERISTEMSTEM-CELL REGULATIONPOLLEN DEVELOPMENTANTHER DEVELOPMENTTHALIANATAPETALFATEArabidopsisArabidopsis ProteinsBiotechnologyGene ExpressionGene Expression Regulation, PlantPlant ProteinsSeedsTranscription Factors