ArticlePlant biotechnology journal2025
The transcription factor CCT30 promotes rice preharvest sprouting by regulating sugar signalling to inhibit the ABA-mediated pathway.
Article in Plant biotechnology journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- SDR3.1 negatively regulates seed dormancy in Poaceae crops.The Plant journal : for cell and molecular biology · 2026Article
- Stratification overcomes ABA-mediated seed dormancy by uncoupling RGL2/ABI5 inhibition from α-amylase expression.Stress biology · 2026Article
- Evaluation ofPlants (Basel, Switzerland) · 2026Article
- Quiescin Sulfhydryl Oxidase-Like 1 Positively Regulates Seed Dormancy in Rice.Plant biotechnology journal · 2026Article
- OsSAE1 orchestrates the antagonistical regulation of gibberellin and abscisic acid signaling to control rice seed germination.Journal of integrative plant biology · 2026Article
- Paraquat resistance mutations have differential effects on plant fitness in two rice cultivars.The Biochemical journal · 2025Article
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Authors and funding
14 authors.
Funding
Abstract
Seed dormancy is an important adaptive trait in plants. Proper seed dormancy enables the avoidance of preharvest sprouting in the undesirable conditions like rainfall frequently. In this study, qPSR8, a major QTL for preharvest sprouting, was isolated, and a previously reported heading-date gene, CCT30, was verified as the candidate gene. The CCT30 knockout mutants (CCT30-CR) enhanced seed dormancy and ABA sensitivity as compared with the wild-type ZH11. Conversely, CCT30 overexpressing plants had opposite phenotype changes and had a decreased ABA content. The expression of ABA synthesis genes such as OsNCEDs and ABA signalling genes such as ABI3 and ABI5 were upregulated and sugar metabolism-related genes such as amylase genes were downregulated in CCT30-CR. Correspondingly, fewer free sugars, such as monosaccharides and oligosaccharides, accumulated in CCT30-CR. The freshly harvested seeds from CCT30-CR had no ability to transmit sugar signals when treated with 1% exogenous glucose. In addition, CCT30 interacted with the transcription factor OsbZIP37, which negatively regulates seed dormancy. Overall, CCT30 promotes preharvest sprouting by enhancing sugar signals that inhibit the ABA-mediated pathway, and CCT30 is a good gene for breeding rice varieties resistant to preharvest sprouting.
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