Comprehensive maps of functional variation at transcription factor (TF) binding sites (cis-elements) are crucial for elucidating how genotype shapes phenotype. Here we report the construction of a pan-cistrome of the maize leaf under well-watered and drought conditions. We quantified haplotype-specific TF footprints across a pan-genome of 25 maize hybrids and mapped over two-hundred thousand genetic variants (termed binding-QTL) linked to cis-element occupancy. Three lines of evidence support the functional significance of binding-QTL: i) they coincide with numerous known causative loci that regulate traits, including VGT1, Trehalase1, and the MITE transposon near ZmNAC111 under drought; ii) their footprint bias is mirrored between inbred parents and by ChIP-seq; iii) partitioning genetic variation across genomic regions demonstrates that binding-QTL capture the majority of heritable trait variation across ∼70% of 143 phenotypes. Our study provides a promising approach to make previously hidden cis-variation more accessible for genetic studies and multi-target engineering of complex traits.
Genetic variation at transcription factor binding sites largely explains phenotypic heritability in maize
J. Engelhorn,Samantha J. Snodgrass,A. Kok,Arun S. Seetharam,Michael Schneider,Tatjana Kiwit,Ayush Singh,M. Banf,Merritt Khaipho-Burch,D. Runcie,Victor Sánchez Camargo,J. V. Torres-Rodríguez,Guangchao Sun,M. Stam,F. Fiorani,James c. Schnable,H. Bass,M. Hufford,B. Stich,W. Frommer,J. Ross-Ibarra,Thomas Hartwig
Published 2024 in bioRxiv
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- Publication year
2024
- Venue
bioRxiv
- Publication date
2024-04-20
- Fields of study
Biology, Medicine, Environmental Science
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Semantic Scholar, PubMed
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