Journal article
Accumulation patterns of anthocyanin and γ-oryzanol during black rice grain development
PloS one, Vol.19(5), e0302745
22/05/2024
PMID: 38776277
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Source: InCites
Abstract
Pigmented rice, especially black rice, is gaining popularity as it is rich in antioxidants such as anthocyanins and γ-oryzanol. At present, knowledge about temporal control of biosynthesis and accumulation of antioxidants during grain development is limited. To address this, the accumulation patterns of anthocyanins and γ-oryzanol were assessed in two distinct black rice genotypes over the course of grain development, and the expression of known regulatory genes for anthocyanin biosynthesis was examined. The results indicated that total γ-oryzanol content increased continuously throughout grain development, while total anthocyanins peaked at dough stage (15 to 21 days after flowering) followed by a decline until grain maturity in both genotypes. However, the rate of decrease in anthocyanin content differed between genotypes, and a more prominent decline in cyanidin 3-O-glucoside (C3G) relative to peonidin 3-O-glucoside (P3G) was observed for both. Anthocyanin content was closely linked with the expression of key regulatory genes in the MBW (MYB-bHLH-WD40) complex. This improved knowledge of the genotype-specific biosynthesis (anthocyanins only) and accumulation patterns of anthocyanins and γ-oryzanol can inform subsequent research efforts to increase concentrations of these key antioxidants in black rice grains.
Details
- Title
- Accumulation patterns of anthocyanin and γ-oryzanol during black rice grain development
- Creators
- Manisha Thapa - Southern Cross UniversityLei Liu - Southern Cross UniversityBronwyn J Barkla - Southern Cross UniversityTobias Kretzschmar - Southern Cross UniversitySuzy Y Rogiers - NSW Department of Primary IndustriesTerry J Rose - Southern Cross University
- Publication Details
- PloS one, Vol.19(5), e0302745
- Publisher
- Public Library of Science
- Grants
- Resolving the Genetics of Grain Pigmentation Traits in Rice, LP190100468, Australian Research Council (Australia, Canberra) - ARC
- Grant note
- The Australian Research Council (ARC) linkage project (Grant No. LP190100468, funds received by TK) provided some funding for this specific research, but they had specific no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
- Identifiers
- 991013190884202368
- Copyright
- © 2024 Thapa et al. This is an open access article distributed under the terms of the Creative Commons Attribution License.
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article