title: Analysis of oil composition in cultivars and wild species of oat (Avena sp.).
abstract: Oil quality and content were analyzed in 33 accessions from 13 wild species and 10 accessions of cultivated oat. Wild oat species tended to have higher oil and 18:1 fatty acid (FA) contents and lower amounts of 18:2 and 18:3 FAs as compared to cultivated oats. In addition to common FAs, minor amounts of several hydroxy and epoxy FAs were also present in the oat oil and mainly confined to specific lipid classes. These unusual FAs included the previously reported 15-hydroxy 18:2 (Delta9,12) (avenoleic acid) mostly found among polar lipids and a novel 7-hydroxyhexadecanoic acid located to 1,2-diacylglycerol. The present study highlights the potential of making use of the existing germplasm, consisting of wild oat species, in breeding programs for achieving new oat varieties that produce a range of oils with different FA compositions as well as having high oil contents. However, in one matter, oats apparently lack genetic diversity and that is for oil qualities that are highly enriched in the omega 3 (omega-3) FA 18:3. Consequently, developing oat cultivars with highly unsaturated oils will need involvement of other techniques such as biotechnology.
authors.affiliation: Department of Plant Breeding and Biotechnology, Swedish University of Agricultural Sciences, P.O. Box 101, 230 53 Alnarp, Sweden.
authors.forename: Svetlana
authors.initials: S
authors.lastname: Leonova
authors.forename: Tatiana
authors.initials: T
authors.lastname: Shelenga
authors.forename: Mats
authors.initials: M
authors.lastname: Hamberg
authors.forename: Alexey V
authors.initials: AV
authors.lastname: Konarev
authors.forename: Igor
authors.initials: I
authors.lastname: Loskutov
authors.forename: Anders S
authors.initials: AS
authors.lastname: Carlsson
mesh_terms: D018554:Avena / Q000737:chemistry*; D005227:Fatty Acids / Q000032:analysis; D008055:Lipids / Q000032:analysis; D010169:Palmitic Acids / Q000032:analysis; D010938:Plant Oils / Q000032:analysis / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D013045:Species Specificity
chemical_list: D005227:Fatty Acids; D008055:Lipids; D010169:Palmitic Acids; D010938:Plant Oils