ArticleThe plant genome2025
Pangenome insights into structural variation and functional diversification of barley CCT motif genes.
Article in The plant genome, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Haplotype‑resolved comparison of transcription factor superfamilies between wild and cultivated autotetraploid green jujube and prioritization of candidate transcription factors via machine learning.The plant genome · 2026Article
- Vernalization regulatory network identifies potential novel functions for genes in the HvVRN2 locus.The New phytologist · 2026Article
- Pangenome insights into structural variation and functional diversification of barley CCT motif genes.The plant genome · 2025Article
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2 authors.
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Abstract
CONSTANS, CONSTANS-LIKE, TIMING OF CAB EXPRESSION1 (CCT) motif genes play a key role in barley (Hordeum vulgare L.) development and flowering, yet their genetic diversity remains underexplored. Leveraging a barley pangenome (76 genotypes) and pan-transcriptome (subset of 20 genotypes), we examined CCT gene variation and evolutionary dynamics. Motif-based searches, combined with genome assembly validation, revealed annotation limitations and novel frameshift variants (e.g., HvCO10, where Hv is Hordeum vulgare L.), indicating active diversification. Pangenome-wide phylogenetic analysis identified clade-specific domain expansions, including B-box domain additions in HvCO clades. Tissue-specific expression patterns further supported functional divergence among paralogs. Notably, VRN2, a canonical floral repressor associated with winter growth, was retained in spring genotypes, challenging its presumed exclusive role in vernalization. Discrepancies between VRN1 expression, VRN2 deletion, and growth habit implicated additional regulatory mechanisms. These findings highlight the power of pangenomes in resolving gene family complexity, refining annotations, and advancing the understanding of CCT genes to enhance barley resilience and adaptability.
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