eprintid: 8873
rev_number: 12
eprint_status: archive
userid: 1305
dir: disk0/00/00/88/73
datestamp: 2015-07-17 08:30:59
lastmod: 2016-10-21 08:41:34
status_changed: 2015-07-17 08:30:59
type: article
metadata_visibility: show
creators_name: Wang, M L
creators_name: Khera, P
creators_name: Pandey, M K
creators_name: Wang, H
creators_name: Qiao, L
creators_name: Feng, S
creators_name: Tonnis, B
creators_name: Barkley, N A
creators_name: Pinnow, D
creators_name: Holbrook, C C
creators_name: Culbreath, A K
creators_name: Varshney, R K
creators_name: Guo, B
icrisatcreators_name: Khera, P
icrisatcreators_name: Pandey, M K
icrisatcreators_name: Varshney, R K
affiliation: Plant Genetics Resources Conservation Unit, US Department of Agriculture-Agricultural Research Service (Griffin)
affiliation: Crop Protection and Management Research Unit, US Department of Agriculture-Agricultural Research Service (Tifton)
affiliation: ICRISAT (Patancheru)
affiliation: Department of Plant Pathology, University of Georgia (Tifton)
affiliation: Fujian Agriculture and Forestry University (Fuzhou)
affiliation: College of Life Science, Qingdao Agricultural University (Shandong)
affiliation: College of Bioscience and Biotechnology, Qiongzhou University (Sanya)
country: USA
country: India
country: China
title: Genetic Mapping of QTLs Controlling Fatty Acids Provided Insights into the Genetic Control of Fatty Acid Synthesis Pathway in Peanut (Arachis hypogaea L.)
ispublished: pub
subjects: s1.3
divisions: D3
crps: crp1.5
full_text_status: public
keywords: Fatty acids; Quantitative trait loci; Linoleic acid; Oleic acid; Peanut; Stearic acid; Alleles; Gene mapping; Groundnut
note: This work has been undertaken as part of the CGIAR Research Program on Grain Legumes. ICRISAT is a member of CGIAR Consortium.
abstract: Peanut, a high-oil crop with about 50% oil content, is either crushed for oil or used as edible products. Fatty acid composition determines the oil quality which has high relevance to consumer health, flavor, and shelf life of commercial products. In addition to the major fatty acids, oleic acid (C18:1) and linoleic acid (C18:2) accounting for about 80% of peanut oil, the six other fatty acids namely palmitic acid (C16:0), stearic acid (C18:0), arachidic acid (C20:0), gadoleic acid (C20:1), behenic acid (C22:0), and lignoceric acid (C24:0) are accounted for the rest 20%. To determine the genetic basis and to improve further understanding on effect of FAD2 genes on these fatty acids, two recombinant inbred line (RIL) populations namely S-population (high oleic line ‘SunOleic 97R’ × low oleic line ‘NC94022’) and T-population (normal oleic line ‘Tifrunner’ × low oleic line ‘GT-C20’) were developed. Genetic maps with 206 and 378 marker loci for the S- and the T-population, respectively were used for quantitative trait locus (QTL) analysis. As a result, a total of 164 main-effect (M-QTLs) and 27 epistatic (E-QTLs) QTLs associated with the minor fatty acids were identified with 0.16% to 40.56% phenotypic variation explained (PVE). Thirty four major QTLs (>10% of PVE) mapped on five linkage groups and 28 clusters containing more than three QTLs were also identified. These results suggest that the major QTLs with large additive effects would play an important role in controlling composition of these minor fatty acids in addition to the oleic and linoleic acids in peanut oil. The interrelationship among these fatty acids should be considered while breeding for improved peanut genotypes with good oil quality and desired fatty acid composition.
date: 2015-04-07
date_type: published
publication: PLoS ONE
publisher: Public Library of Science
pagerange: 01-21
id_number: 10.1371/journal.pone.0119454
refereed: TRUE
issn: 1932-6203
official_url: http://dx.doi.org/10.1371/journal.pone.0119454
related_url_url: https://scholar.google.co.in/scholar?hl=en&q=Genetic+Mapping+of+QTLs+Controlling+Fatty+Acids+Provided+Insights+into+the+Genetic+Control+of+Fatty+Acid+Synthesis+Pathway+in+Peanut+%28Arachis+hypogaea+L.%29&btnG=
related_url_type: pub
funders: This research was partially supported by funds provided by the USDA Agricultural Research Service, the Georgia Agricultural Commodity Commission for Peanuts, Peanut Foundation and National Peanut Board.
citation:   Wang, M L and Khera, P and Pandey, M K and Wang, H and Qiao, L and Feng, S and Tonnis, B and Barkley, N A and Pinnow, D and Holbrook, C C and Culbreath, A K and Varshney, R K and Guo, B  (2015) Genetic Mapping of QTLs Controlling Fatty Acids Provided Insights into the Genetic Control of Fatty Acid Synthesis Pathway in Peanut (Arachis hypogaea L.).  PLoS ONE.  01-21.  ISSN 1932-6203     
document_url: http://oar.icrisat.org/8873/1/journal.pone.0119454.pdf