ArticlePlant physiology2014
Amyloplast-localized SUBSTANDARD STARCH GRAIN4 protein influences the size of starch grains in rice endosperm.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.
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Who cites it
55 citing papers in PubMed, 115 citations in OpenAlex.
- In Planta Expression of Thermophilic GtGBE Mimics BEIIb and Modifies Rice Starch Structure Without Yield Penalties.Plant biotechnology journal · 2026Article
- Pollen-expressed methionine synthases in Nicotiana tabacum regulate pollen development and germination.Plant physiology · 2026Article
- Biochemical and transcriptomic profiling analysis of drought tolerant related genes in ML 82-2 and ML 125-2 rice mutant lines.Biotechnologia · 2025Article
- SUBSTANDARD STARCH GRAIN7 regulates starch grain size and endosperm development in rice.Plant biotechnology journal · 2024Article
- Partial replacement of inorganic fertilizer with organic inputs for enhanced nitrogen use efficiency, grain yield, and decreased nitrogen losses under rice-based systems of mid-latitudes.BMC plant biology · 2024Article
- Phenotypic Analysis and Gene Cloning of Rice Floury Endosperm MutantPlants (Basel, Switzerland) · 2024Article
- Mutations in starch BRANCHING ENZYME 2a suppress the traits caused by the loss of ISOAMYLASE1 in barley.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Genome-Wide Identification of microRNAs Associated with Starch Biosynthesis and Endosperm Development in Foxtail Millet.International journal of molecular sciences · 2024Article
- Identification of two plastid transit peptides for construction of pollen-inactivation system in rice.Molecular breeding : new strategies in plant improvement · 2024Article
- Chalkiness and premature controlled by energy homeostasis in OsNAC02 Ko-mutant during vegetative endosperm development.BMC plant biology · 2024Article
- Arabidopsis TIC236 contributes to proplastid development and chloroplast biogenesis during embryogenesis.Frontiers in plant science · 2024Article
- Starch Properties and Morphology of Eight Floury Endosperm Mutants in Rice.Plants (Basel, Switzerland) · 2023Article
- Increasing amyloplast size in wheat endosperm through mutation of PARC6 affects starch granule morphology.The New phytologist · 2023Article
- Customizing Starch Properties: A Review of Starch Modifications and Their Applications.Polymers · 2023Review
- Rice HEAT SHOCK PROTEIN60-3B maintains male fertility under high temperature by starch granule biogenesis.Plant physiology · 2023Article
- The translational landscape of bread wheat during grain development.The Plant cell · 2023Article
- FLOURY ENDOSPERM 6 mutations enhance the sugary phenotype caused by the loss of ISOAMYLASE1 in barley.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- FKF1 Interacts with CHUP1 and Regulates Chloroplast Movement in Arabidopsis.Plants (Basel, Switzerland) · 2023Article
- A mitochondrion-associated PPR protein, WBG1, regulates grain chalkiness in rice.Frontiers in plant science · 2023Article
- Transcriptome and Metabolome Analyses Reveals the Pathway and Metabolites of Grain Quality Under Phytochrome B in Rice (Oryza sativa L.).Rice (New York, N.Y.) · 2022Article
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Authors and funding
7 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Starch is a biologically and commercially important polymer of glucose and is synthesized to form starch grains (SGs) inside amyloplasts. Cereal endosperm accumulates starch to levels that are more than 90% of the total weight, and most of the intracellular space is occupied by SGs. The size of SGs differs depending on the plant species and is one of the most important factors for industrial applications of starch. However, the molecular machinery that regulates the size of SGs is unknown. In this study, we report a novel rice (Oryza sativa) mutant called substandard starch grain4 (ssg4) that develops enlarged SGs in the endosperm. Enlargement of SGs in ssg4 was also observed in other starch-accumulating tissues such as pollen grains, root caps, and young pericarps. The SSG4 gene was identified by map-based cloning. SSG4 encodes a protein that contains 2,135 amino acid residues and an amino-terminal amyloplast-targeted sequence. SSG4 contains a domain of unknown function490 that is conserved from bacteria to higher plants. Domain of unknown function490-containing proteins with lengths greater than 2,000 amino acid residues are predominant in photosynthetic organisms such as cyanobacteria and higher plants but are minor in proteobacteria. The results of this study suggest that SSG4 is a novel protein that influences the size of SGs. SSG4 will be a useful molecular tool for future starch breeding and biotechnology.
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