ArticlePlant biotechnology journal2023
The OsNAC24-OsNAP protein complex activates OsGBSSI and OsSBEI expression to fine-tune starch biosynthesis in rice endosperm.
Article in Plant biotechnology journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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26 citing papers in PubMed, 45 citations in OpenAlex.
- Discovering of the transcriptional regulatory network involved in starch biosynthesis in sorghum grains.Plant diversity · 2026Article
- An updated molecular toolkit for genomics-assisted breeding of waxy sorghum [Sorghum bicolor (L.) Moench].Journal of applied genetics · 2026Article
- A BpbZIP4 transcription factor enhances drought resistance and root development inHorticulture research · 2026Article
- Antagonistic effects of selection on alleles associated with seed size and seed dormancy in wheat.Genome biology · 2025Article
- Overexpression of thePlants (Basel, Switzerland) · 2025Article
- ZmSSRP1, transactivated by OPAQUE11, positively regulates starch biosynthesis in maize endosperm.Plant biotechnology journal · 2025Article
- A large-scale gene regulatory network for rice endosperm starch biosynthesis and its application in genetic improvement of rice quality.Plant biotechnology journal · 2025Article
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- OsSPL14 and OsNF-YB9/YC8-12 subunits cooperate to enhance grain appearance quality by promoting Waxy and PDIL1-1 expression in rice.Plant communications · 2025Article
- Genome-Wide Dissection of Sorghum B3 Transcription Factor Family Identifies SbLAV1 as a Critical Transcriptional Regulator of Starch Biosynthesis in Developing Sorghum Grains.Plants (Basel, Switzerland) · 2025Article
- Unique starch biosynthesis pathways in wild rice revealed by multi-omics analyses.Plant biotechnology journal · 2025Article
- RNA-seq Analysis of the Mechanisms Underlying Chalky Grain and Characterization of Two IAA Receptor Proteins OsAFB3 and OsAFB5 in Chalkiness Formation in Oryza sativa.Rice (New York, N.Y.) · 2025Article
- Carbohydrate flow during grain filling: Phytohormonal regulation and genetic control in rice (Oryza sativa).Journal of integrative plant biology · 2025Review
- A novel transcription factor OsMYB73 affects grain size and chalkiness by regulating endosperm storage substances' accumulation-mediated auxin biosynthesis signalling pathway in rice.Plant biotechnology journal · 2025Article
- Effect of Harvest Time on Non-Volatile Metabolites in Japonica Rice.Foods (Basel, Switzerland) · 2025Article
- CRISPR/Cas9: a sustainable technology to enhance climate resilience in major Staple Crops.Frontiers in genome editing · 2025Review
- The LCG1-OsBP5/OsEBP89-Wx module regulates the grain chalkiness and taste quality in rice.Plant biotechnology journal · 2025Article
- NAC25 transcription factor regulates the degeneration of cytoplasmic membrane integrity and starch biosynthesis in rice endosperm through interacting with MADS29.Frontiers in plant science · 2025Article
- The E3 ligase OsPUB33 controls rice grain size and weight by regulating the OsNAC120-BG1 module.The Plant cell · 2024Article
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13 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Starch accounts for up to 90% of the dry weight of rice endosperm and is a key determinant of grain quality. Although starch biosynthesis enzymes have been comprehensively studied, transcriptional regulation of starch-synthesis enzyme-coding genes (SECGs) is largely unknown. In this study, we explored the role of a NAC transcription factor, OsNAC24, in regulating starch biosynthesis in rice. OsNAC24 is highly expressed in developing endosperm. The endosperm of osnac24 mutants is normal in appearance as is starch granule morphology, while total starch content, amylose content, chain length distribution of amylopectin and the physicochemical properties of the starch are changed. In addition, the expression of several SECGs was altered in osnac24 mutant plants. OsNAC24 is a transcriptional activator that targets the promoters of six SECGs; OsGBSSI, OsSBEI, OsAGPS2, OsSSI, OsSSIIIa and OsSSIVb. Since both the mRNA and protein abundances of OsGBSSI and OsSBEI were decreased in the mutants, OsNAC24 functions to regulate starch synthesis mainly through OsGBSSI and OsSBEI. Furthermore, OsNAC24 binds to the newly identified motifs TTGACAA, AGAAGA and ACAAGA as well as the core NAC-binding motif CACG. Another NAC family member, OsNAP, interacts with OsNAC24 and coactivates target gene expression. Loss-of-function of OsNAP led to altered expression in all tested SECGs and reduced the starch content. These results demonstrate that the OsNAC24-OsNAP complex plays key roles in fine-tuning starch synthesis in rice endosperm and further suggest that manipulating the OsNAC24-OsNAP complex regulatory network could be a potential strategy for breeding rice cultivars with improved cooking and eating quality.
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