Genotyping and lipid profiling of 601 cultivated sunflower lines reveals novel genetic determinants of oil fatty acid content

Sunflower is an important oilseed crop domesticated in North America approximately 4000 years ago. During the last century, oil content in sunflower was under strong selection. Further improvement of oil properties achieved by modulating its fatty acid composition is one of the main directions in mo...

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Published in:	BMC genomics Vol. 22; no. 1; p. 505
Main Authors:	Chernova, Alina I, Gubaev, Rim F, Singh, Anupam, Sherbina, Katrina, Goryunova, Svetlana V, Martynova, Elena U, Goryunov, Denis V, Boldyrev, Stepan V, Vanyushkina, Anna A, Anikanov, Nikolay A, Stekolshchikova, Elena A, Yushina, Ekaterina A, Demurin, Yakov N, Mukhina, Zhanna M, Gavrilova, Vera A, Anisimova, Irina N, Karabitsina, Yulia I, Alpatieva, Natalia V, Chang, Peter L, Khaitovich, Philipp, Mazin, Pavel V, Nuzhdin, Sergey V
Format:	Journal Article
Language:	English
Published:	England BioMed Central Ltd 05-07-2021 BioMed Central BMC
Subjects:	Association analysis Chemical properties Chromosomes Collections Composition Crops Datasets Domestication Fatty acid composition Fatty acids Fatty Acids - analysis GBS Genetic aspects Genetic Association Studies Genetic control Genetic markers Genomes Genomics Genotype Genotype & phenotype Genotypes Genotyping Germplasm GWAS Helianthus Helianthus - genetics Inbreeding Lipids Metabolites North America Oilseed crops Oilseeds Plant Breeding Plant Oils - analysis Principal components analysis Russia Scientific imaging Seeds Single-nucleotide polymorphism Soybeans Sunflower Sunflower oil Sunflowers Synthesis UPLC-MS Vegetable oils North America Russia Genetic markers UPLC-MS GWAS GBS Triglycerides Sunflower Fatty acids
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Summary:	Sunflower is an important oilseed crop domesticated in North America approximately 4000 years ago. During the last century, oil content in sunflower was under strong selection. Further improvement of oil properties achieved by modulating its fatty acid composition is one of the main directions in modern oilseed crop breeding. We searched for the genetic basis of fatty acid content variation by genotyping 601 inbred sunflower lines and assessing their lipid and fatty acid composition. Our genome-wide association analysis based on the genotypes for 15,483 SNPs and the concentrations of 23 fatty acids, including minor fatty acids, revealed significant genetic associations for eleven of them. Identified genomic regions included the loci involved in rare fatty acids variation on chromosomes 3 and 14, explaining up to 34.5% of the total variation of docosanoic acid (22:0) in sunflower oil. This is the first large scale implementation of high-throughput lipidomic profiling to sunflower germplasm characterization. This study contributes to the genetic characterization of Russian sunflower collections, which made a substantial contribution to the development of sunflower as the oilseed crop worldwide, and provides new insights into the genetic control of oil composition that can be implemented in future studies.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1471-2164 1471-2164
DOI:	10.1186/s12864-021-07768-y