ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2023
Effects of the core heading date genes Hd1, Ghd7, DTH8, and PRR37 on yield-related traits in rice.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 16 citations in OpenAlex.
- Allele-informed QTL-seq identifies Hd18 as a minor modifier of heading date in elite rice cultivars.The plant genome · 2026Article
- Natural variation in Phosphatidylinositol 4-Kinase OsPI4Kγ7 and its interaction with OsLIC balance rice yield and latitudinal adaptation.Nature communications · 2026Article
- Upper-leaf architecture was associated with grain yield variation in anFrontiers in plant science · 2026Article
- JMJ720 regulates flowering time in rice via H3K9 demethylation of Hd1.Plant biotechnology journal · 2025Article
- Comprehensive Analysis ofGenes · 2025Article
- Improving yield-related traits by editing the promoter and distal regulatory region of heading date genes Ghd7 and PRR37 in elite rice variety Mei Xiang Zhan 2.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Review
- Construction of a genetic linkage map and QTL mapping of the agronomic traits in Foxtail millet (Setaria italica).BMC genomics · 2025Article
- A Series of Novel Alleles ofPlants (Basel, Switzerland) · 2025Article
- How have breeders adapted rice flowering to the growing region?Journal of integrative plant biology · 2024Article
- Research Progress on Photoperiod Gene Regulation of Heading Date in Rice.Current issues in molecular biology · 2024Review
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16 authors at 1 institution in 1 country.
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Abstract
key messageWe clarify the influence of the genotypes of the heading date genes Hd1, Ghd7, DTH8, and PRR37 and their combinations on yield-related traits and the functional differences between different haplotypes. Heading date is a key agronomic trait in rice (Oryza sativa L.) that determines yield and adaptability to different latitudes. Heading date 1 (Hd1), Grain number, plant height, and heading date 7 (Ghd7), Days to heading on chromosome 8 (DTH8), and PSEUDO-RESPONSE REGULATOR 37 (PRR37) are core rice genes controlling photoperiod sensitivity, and these genes have many haplotypes in rice cultivars. However, the effects of different haplotypes at these genes on yield-related traits in diverse rice materials remain poorly characterized. In this study, we knocked out Hd1, Ghd7, DTH8, or PRR37, alone or together, in indica and japonica varieties and systematically investigated the agronomic traits of each knockout line. Ghd7 and PRR37 increased the number of spikelets and improved yield, and this effect was enhanced with the Ghd7 DTH8 or Ghd7 PRR37 combination, but Hd1 negatively affected yield. We also identified a new weak functional Ghd7 allele containing a mutation that interferes with splicing. Furthermore, we determined that the promotion or inhibition of heading date by different PRR37 haplotypes is related to PRR37 expression levels, day length, and the genetic background. For rice breeding, a combination of functional alleles of Ghd7 and DTH8 or Ghd7 and PRR37 in the hd1 background can be used to increase yield. Our study clarifies the effects of heading date genes on yield-related traits and the functional differences among their different haplotypes, providing valuable information to identify and exploit elite haplotypes for heading date genes to breed high-yielding rice varieties.
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