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Unravelling marker trait associations linking nutritional valuewith pigmentation in rice seed2.70 MB
Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Unravelling marker trait associations linking nutritional value with pigmentation in rice seed
The plant genome, Vol.16(4), e20360
12/2023
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Abstract
While considerable breeding effort has focused on increasing the yields of staple crops such as rice and the levels of micronutrients such as iron and zinc, breeding to address the problems of the double-burden of malnutrition has received less attention. Pigmented rice has higher nutritional value and greater health benefits compared to white rice. However, the genetic associations underlying pericarp coloration and accumulation of nutritionally valuable compounds is still poorly understood. Here we report the targeted genetic analysis of 364 rice accessions, assessing the genetic relationship between pericarp coloration (measured using multi-spectral imaging) and a range of phenolic compounds with potential nutritional and health-promoting characteristics. A genome-wide association study resulted in the identification of over 280 single nucleotide polymorphisms (SNPs) associated with the traits of interest. Many of the SNPs were associated with more than one trait, colocalization occurring between nutritional traits, and nutritional and color-related traits. Targeted association analysis identified 67 SNPs, located within 52 candidate genes and associated with 24 traits. Six haplotypes identified within the genes Rc/bHLH17 and OsIPT5 indicated that these genes have an important role in the regulation of a wide range of phenolic compounds, and not only those directly conferring pericarp color. These identified genetic linkages between nutritionally valuable phenolic compounds and pericarp color present not only a valuable resource for the enhancement of the nutritional value of rice but an easy method of selection of suitable genotypes.
Details
- Title
- Unravelling marker trait associations linking nutritional value with pigmentation in rice seed
- Creators
- Edwige Gaby Nkouaya Mbanjo - International Rice Research InstituteErstelle A Pasion - International Rice Research InstituteHuw Jones - National Institute of Agricultural BotanySocorro Carandang - International Rice Research InstituteGopal Misra - International Rice Research InstituteJohn Carlos Ignacio - International Rice Research InstituteTobias Kretzschmar - Southern Cross UniversityNese Sreenivasulu - International Rice Research InstituteLesley Ann Boyd - National Institute of Agricultural Botany
- Publication Details
- The plant genome, Vol.16(4), e20360
- Publisher
- Wiley
- Grant note
- Biotechnology and Biological Sciences Research Council. Grant Number: Newton Fund Rice Initiative project BB/N013603/1
- Identifiers
- 991013137306502368
- Copyright
- © 2023 The Authors. The Plant Genome published by Wiley Periodicals LLC on behalf of Crop Science Society of America. This is an open access article under the terms of the Creative Commons Attribution License, (https://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article