ArticleThe Plant cell2011
Maize opaque5 encodes monogalactosyldiacylglycerol synthase and specifically affects galactolipids necessary for amyloplast and chloroplast function.
Article in The Plant cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.
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52 citing papers in PubMed, 102 citations in OpenAlex.
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- Rice MGD1-Mediated Improvement of Photosynthesis and Crop Yield by Flexible Adaptation to Different Light Conditions.Plant biotechnology journal · 2026Article
- Mapping-by-Sequencing via eBSRmap (Easy Bulk Segregate RNA Mapping) in a B73 EMS Mutant Population.Genes · 2025Article
- Maize big embryo 6 reveals roles of plastidial and cytosolic prephenate aminotransferases in seed and plant development.The Plant cell · 2025Article
- A point mutation in the photosystem II protein PsbW disrupts thylakoid organization and alters starch granule formation.Plant physiology · 2025Article
- Molecular mechanisms controlling grain size and weight and their biotechnological breeding applications in maize and other cereal crops.Journal of advanced research · 2024Review
- OsMGD1-Mediated Membrane Lipid Remodeling Improves Salt Tolerance in Rice.Plants (Basel, Switzerland) · 2024Article
- Rice LIKE EARLY STARVATION1 cooperates with FLOURY ENDOSPERM6 to modulate starch biosynthesis and endosperm development.The Plant cell · 2024Article
- Starch Properties and Morphology of Eight Floury Endosperm Mutants in Rice.Plants (Basel, Switzerland) · 2023Article
- A Systemic Investigation of Genetic Architecture and Gene Resources Controlling Kernel Size-Related Traits in Maize.International journal of molecular sciences · 2023Article
- Maize kernel metabolome involved in resistance to fusarium ear rot and fumonisin contamination.Frontiers in plant science · 2023Article
- Riboflavin integrates cellular energetics and cell cycle to regulate maize seed development.Plant biotechnology journal · 2022Article
- Plastidic pyruvate dehydrogenase complex E1 component subunit Alpha1 is involved in galactolipid biosynthesis required for amyloplast development in rice.Plant biotechnology journal · 2022Article
- Identification of a new mutant allele ofMolecular breeding : new strategies in plant improvement · 2022Article
- Genetic basis of maize kernel protein content revealed by high-density bin mapping using recombinant inbred lines.Frontiers in plant science · 2022Article
- Trihelix Transcription FactorInternational journal of molecular sciences · 2021Article
- Starch biosynthesis in cereal endosperms: An updated review over the last decade.Plant communications · 2021Review
- Maize kernel development.Molecular breeding : new strategies in plant improvement · 2021Review
- Cytosolic malate dehydrogenase 4 modulates cellular energetics and storage reserve accumulation in maize endosperm.Plant biotechnology journal · 2020Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The maize (Zea mays) opaque5 (o5) locus was shown to encode the monogalactosyldiacylglycerol synthase MGD1. Null and point mutations of o5 that affect the vitreous nature of mature endosperm engendered an allelic series of lines with stepwise reductions in gene function. C(18:3)/C(18:2) galactolipid abundance in seedling leaves was reduced proportionally, without significant effects on total galactolipid content. This alteration in polar lipid composition disrupted the organization of thylakoid membranes into granal stacks. Total galactolipid abundance in endosperm was strongly reduced in o5(-) mutants, causing developmental defects and changes in starch production such that the normal simple granules were replaced with compound granules separated by amyloplast membrane. Complete loss of MGD1 function in a null mutant caused kernel lethality owing to failure in both endosperm and embryo development. The data demonstrate that low-abundance galactolipids with five double bonds serve functions in plastid membranes that are not replaced by the predominant species with six double bonds. Furthermore, the data identify a function of amyloplast membranes in the development of starch granules. Finally, the specific changes in lipid composition suggest that MGD1 can distinguish the constituency of acyl groups on its diacylglycerol substrate based upon the degree of desaturation.
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