ArticlePlant biotechnology journal2024
SUBSTANDARD STARCH GRAIN7 regulates starch grain size and endosperm development in rice.
Article in Plant biotechnology journal, 2024. 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.
- In Planta Expression of Thermophilic GtGBE Mimics BEIIb and Modifies Rice Starch Structure Without Yield Penalties.Plant biotechnology journal · 2026Article
- Genome-Wide Analysis of the DUF1664 Family Genes in Peanut (Plants (Basel, Switzerland) · 2026Article
- Effects of a novel loss-of-function waxy endosperm allele on sorghum seed development and grain quality.G3 (Bethesda, Md.) · 2025Article
- Plant-derived vesicle-like nanoparticles in food crops: emerging insights into nutritional biofortification and biomedical applications.Plant biotechnology journal · 2025Review
- 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
- 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
- Phenotypic Analysis and Gene Cloning of Rice Floury Endosperm MutantPlants (Basel, Switzerland) · 2024Article
Corrections and comments
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Authors and funding
26 authors.
Funding
Abstract
Starch is synthesized as insoluble, semicrystalline particles within plant chloroplast and amyloplast, which are referred to as starch grains (SGs). The size and morphology of SGs in the cereal endosperm are diverse and species-specific, representing a key determinant of the suitability of starch for industrial applications. However, the molecular mechanisms modulating SG size in cereal endosperm remain elusive. Here, we functionally characterized the rice (Oryza sativa) mutant substandard starch grain7 (ssg7), which exhibits enlarged SGs and defective endosperm development. SSG7 encodes a plant-specific DUF1001 domain-containing protein homologous to Arabidopsis (Arabidopsis thaliana) CRUMPLED LEAF (AtCRL). SSG7 localizes to the amyloplast membrane in developing endosperm. Several lines of evidence suggest that SSG7 functions together with SSG4 and SSG6, known as two regulators essential for SG development, to control SG size, by interacting with translocon-associated components, which unveils a molecular link between SG development and protein import. Genetically, SSG7 acts synergistically with SSG4 and appears to be functional redundancy with SSG6 in modulating SG size and endosperm development. Collectively, our findings uncover a multimeric functional protein complex involved in SG development in rice. SSG7 represents a promising target gene for the biotechnological modification of SG size, particularly for breeding programs aimed at improving starch quality.
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