» Articles » PMID: 32019504

Linkage Disequilibrium Mapping for Grain Fe and Zn Enhancing QTLs Useful for Nutrient Dense Rice Breeding

Overview
Journal BMC Plant Biol
Publisher Biomed Central
Specialty Biology
Date 2020 Feb 6
PMID 32019504
Citations 29
Authors
Affiliations
Soon will be listed here.
Abstract

Background: High yielding rice varieties are usually low in grain iron (Fe) and zinc (Zn) content. These two micronutrients are involved in many enzymatic activities, lack of which cause many disorders in human body. Bio-fortification is a cheaper and easier way to improve the content of these nutrients in rice grain.

Results: A population panel was prepared representing all the phenotypic classes for grain Fe-Zn content from 485 germplasm lines. The panel was studied for genetic diversity, population structure and association mapping of grain Fe-Zn content in the milled rice. The population showed linkage disequilibrium showing deviation of Hardy-Weinberg's expectation for Fe-Zn content in rice. Population structure at K = 3 categorized the panel population into distinct sub-populations corroborating with their grain Fe-Zn content. STRUCTURE analysis revealed a common primary ancestor for each sub-population. Novel quantitative trait loci (QTLs) namely qFe3.3 and qFe7.3 for grain Fe and qZn2.2, qZn8.3 and qZn12.3 for Zn content were detected using association mapping. Four QTLs, namely qFe3.3, qFe7.3, qFe8.1 and qFe12.2 for grain Fe content were detected to be co-localized with qZn3.1, qZn7, qZn8.3 and qZn12.3 QTLs controlling grain Zn content, respectively. Additionally, some Fe-Zn controlling QTLs were co-localized with the yield component QTLs, qTBGW, OsSPL14 and qPN. The QTLs qFe1.1, qFe3.1, qFe5.1, qFe7.1, qFe8.1, qZn6, qZn7 and gRMm9-1 for grain Fe-Zn content reported in earlier studies were validated in this study.

Conclusion: Novel QTLs, qFe3.3 and qFe7.3 for grain Fe and qZn2.2, qZn8.3 and qZn12.3 for Zn content were detected for these two traits. Four Fe-Zn controlling QTLs and few yield component QTLs were detected to be co-localized. The QTLs, qFe1.1, qFe3.1, qFe5.1, qFe7.1, qFe8.1, qFe3.3, qFe7.3, qZn6, qZn7, qZn2.2, qZn8.3 and qZn12.3 will be useful for biofortification of the micronutrients. Simultaneous enhancement of Fe-Zn content may be possible with yield component traits in rice.

Citing Articles

Genome-Wide Diversity in Lowland and Highland Maize Landraces From Southern South America: Population Genetics Insights to Assist Conservation.

Dominguez P, Gutierrez A, Fass M, Filippi C, Vera P, Puebla A Evol Appl. 2024; 17(12):e70047.

PMID: 39628628 PMC: 11609054. DOI: 10.1111/eva.70047.


Deciphering the genetic basis of agronomic, yield, and nutritional traits in rice (Oryza sativa L.) using a saturated GBS-based SNP linkage map.

Calayugan M, Hore T, Palanog A, Amparado A, Inabangan-Asilo M, Joshi G Sci Rep. 2024; 14(1):18024.

PMID: 39098874 PMC: 11298551. DOI: 10.1038/s41598-024-67543-3.


Dissecting genomic regions and underlying sheath blight resistance traits in rice ( L.) using a genome-wide association study.

Naveenkumar R, Anandan A, Prabhukarthikeyan S, Mahender A, Sangeetha G, Vaish S Plant Direct. 2023; 7(11):e540.

PMID: 38028647 PMC: 10667636. DOI: 10.1002/pld3.540.


Transfer of Stress Resilient QTLs and Panicle Traits into the Rice Variety, Reeta through Classical and Marker-Assisted Breeding Approaches.

Barik S, Moharana A, Pandit E, Behera A, Mishra A, Mohanty S Int J Mol Sci. 2023; 24(13).

PMID: 37445885 PMC: 10341874. DOI: 10.3390/ijms241310708.


Rice biofortification: breeding and genomic approaches for genetic enhancement of grain zinc and iron contents.

Senguttuvel P, G P, C J, D S, Cn N, V J Front Plant Sci. 2023; 14:1138408.

PMID: 37332714 PMC: 10272457. DOI: 10.3389/fpls.2023.1138408.


References
1.
Pradhan S, Pandit E, Nayak D, Behera L, Mohapatra T . Genes, pathways and transcription factors involved in seedling stage chilling stress tolerance in indica rice through RNA-Seq analysis. BMC Plant Biol. 2019; 19(1):352. PMC: 6694648. DOI: 10.1186/s12870-019-1922-8. View

2.
Garcia-Oliveira A, Tan L, Fu Y, Sun C . Genetic identification of quantitative trait loci for contents of mineral nutrients in rice grain. J Integr Plant Biol. 2009; 51(1):84-92. DOI: 10.1111/j.1744-7909.2008.00730.x. View

3.
Bradbury P, Zhang Z, Kroon D, Casstevens T, Ramdoss Y, Buckler E . TASSEL: software for association mapping of complex traits in diverse samples. Bioinformatics. 2007; 23(19):2633-5. DOI: 10.1093/bioinformatics/btm308. View

4.
Kumar V, Singh A, Mithra S, Krishnamurthy S, Parida S, Jain S . Genome-wide association mapping of salinity tolerance in rice (Oryza sativa). DNA Res. 2015; 22(2):133-45. PMC: 4401324. DOI: 10.1093/dnares/dsu046. View

5.
Johnson A, Kyriacou B, Callahan D, Carruthers L, Stangoulis J, Lombi E . Constitutive overexpression of the OsNAS gene family reveals single-gene strategies for effective iron- and zinc-biofortification of rice endosperm. PLoS One. 2011; 6(9):e24476. PMC: 3167849. DOI: 10.1371/journal.pone.0024476. View