ArticleScientific reports2020
Melanin formation in barley grain occurs within plastids of pericarp and husk cells.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 48 citations in OpenAlex.
- Synthesis and characterization of allomelanin model from 1,8-dihydroxynaphthalene autooxidation.Scientific reports · 2025Article
- Unlocking Phenolic Potential: Determining the Optimal Grain Development Stage in Hull-Less Barley Genotypes with Varying Grain Color.Foods (Basel, Switzerland) · 2024Article
- Transcriptional convergence after repeated duplication of an amino acid transporter gene leads to the independent emergence of the black husk/pericarp trait in barley and rice.Plant biotechnology journal · 2024Article
- Date fruit melanin is primarily based on (-)-epicatechin proanthocyanidin oligomers.Scientific reports · 2024Article
- Synthesis, In Silico Studies, and Antioxidant and Tyrosinase Inhibitory Potential of 2-(Substituted Phenyl) Thiazolidine-4-Carboxamide Derivatives.Pharmaceuticals (Basel, Switzerland) · 2023Article
- Conjunctive Analyses of BSA-Seq and BSR-Seq to Identify Candidate Genes Controlling the Black Lemma and Pericarp Trait in Barley.International journal of molecular sciences · 2023Article
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- Polyphenol oxidase genes in barley (Frontiers in plant science · 2023Article
- Melanins from the LichensInternational journal of molecular sciences · 2022Article
- Chlorophyll deficiency delays but does not prevent melanogenesis in barley seed melanoplasts.Protoplasma · 2022Article
- Features of Activity of the Phenylpropanoid Biosynthesis Pathway in Melanin-Accumulating Barley Grains.Frontiers in plant science · 2022Article
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- Plastid role in phytomelanin synthesis in Piptocarpha axillaris (Less.) Baker stems (Asteraceae, Vernonieae).Protoplasma · 2021Article
- PSII Activity Was Inhibited at Flowering Stage with Developing Black Bracts of Oat.International journal of molecular sciences · 2021Article
- Wheat, Barley, and Oat Breeding for Health Benefit Components in Grain.Plants (Basel, Switzerland) · 2021Review
- Melanin Pigment in Plants: Current Knowledge and Future Perspectives.Frontiers in plant science · 2020Review
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Melanins are a class of darkly pigmented biopolymers which are widely distributed among living organisms. The molecular and cellular mechanisms adopted by bacteria, fungi and animals to synthesize melanin, have been well described, but less is known regarding their production in plants. Here, a pair of barley near isogenic lines, bred to differ with respect to the pigmentation of the spike, was compared in order to understand the tissue and cellular location of melanin deposition. The melanic nature of the pigments purified from black spikes was confirmed by a series of solubility tests and Fourier transform infrared spectroscopy. An analysis of grains harvested at various stages of their development revealed that intracellular pigmented structures first appeared in the pericarp and the husk of black spike plants at early dough stage. The co-localization of these structures with red autofluorescence suggested that they form in chloroplast-derived plastids, here designated "melanoplasts". Differences in dynamics of plastid internal structure during grain ripening were detected between the lines by transmission electron microscopy. Both lines accumulated plastoglobuli inside plastids, which persisted in black grain pericarp tissue up to the hard dough stage, while neither plastoglobuli nor any plastids were observed in grain of the control line at this stage. The role of plastoglobuli in melanin synthesis is discussed.
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