ArticleNature plants2025
Chromosomal inversion at the DG1 promoter drives double-grain spikelets and enhances grain yield in sorghum.
Article in Nature plants, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- An Intronic Structural Variant in GhEBS1 Drives Cotton Fruit Size Divergence by Modulating Chromatin Accessibility and Gene Expression.Plant biotechnology journal · 2026Article
- Newly found functions and regulatory networks of WOX family: what else does the WOX say?Planta · 2026Review
- Toward Breeding by Gene Design: Constructing the Ideotype ofPlants (Basel, Switzerland) · 2026Review
- Structure variation-driven activation of TaWUS-D1 confers tri-pistil trait in wheat.Plant communications · 2026Article
- Activation of TaWUS-D1 drives multi-ovary floret development in bread wheat.Plant communications · 2026Article
- Biotechnological and genetic innovations to enhance sorghum adaptation under climate change.Frontiers in plant science · 2026Review
- Article
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Authors and funding
13 authors.
Funding
Abstract
The phenomenon of multiple-grain spikelets is frequently observed in gramineous crops. In the case of dual-floret spikelets, the upper fertile floret develops normally to form a single grain, while the lower sterile floret undergoes abortion. Here we elucidate the role of Double-Grain 1 (DG1), a gene encoding a homeobox-domain-containing protein, in regulating the lower floret meristem activity and double-grain spikelet trait in sorghum. A 35.7-kb paracentric inversion in the DG1 promoter region leads to increased DG1 expression, probably by reducing repressive histone modifications. This increase in DG1 expression transforms the degenerated lower floret into a fertile one. The use of the superior DG1 allele results in an increase of approximately 40.7% to 46.1% in grain number per panicle and a 10.1% to 14.3% increase in overall grain yield. Our findings shed light on the sorghum double-grain spikelet characteristic, offering valuable insights for high-yield breeding designs in cereals.
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Registered trials
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