Genotyping and lipid profiling of 601 cultivated sunflower lines reveals novel genetic determinants of oil fatty acid content.
BMC Genomics
; 22(1): 505, 2021 Jul 05.
Article
en En
| MEDLINE
| ID: mdl-34225652
ABSTRACT
BACKGROUND:
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.RESULTS:
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 (220) in sunflower oil.CONCLUSIONS:
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.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Aceites de Plantas
/
Ácidos Grasos
/
Helianthus
País/Región como asunto:
America do norte
/
Asia
/
Europa
Idioma:
En
Revista:
BMC Genomics
Asunto de la revista:
GENETICA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Rusia