Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.

Use of genetic diversity from related wild and domesticated species has made a significant contribution to improving wheat productivity. Synthetic hexaploid wheats (SHWs) exhibit natural genetic variation for resistance and/or tolerance to biotic and abiotic stresses. Stripe rust caused by (Puccinia...

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Autores principales:	Habtemariam Zegeye, Awais Rasheed, Farid Makdis, Ayele Badebo, Francis C Ogbonnaya
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8055581fe496495286f499176ad0ec21
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spelling	oai:doaj.org-article:8055581fe496495286f499176ad0ec212021-11-25T06:03:25ZGenome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.1932-620310.1371/journal.pone.0105593https://doaj.org/article/8055581fe496495286f499176ad0ec212014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25153126/?tool=EBIhttps://doaj.org/toc/1932-6203Use of genetic diversity from related wild and domesticated species has made a significant contribution to improving wheat productivity. Synthetic hexaploid wheats (SHWs) exhibit natural genetic variation for resistance and/or tolerance to biotic and abiotic stresses. Stripe rust caused by (Puccinia striiformis f. sp. tritici; Pst), is an important disease of wheat worldwide. To characterise loci conferring resistance to stripe rust in SHWs, we conducted a genome-wide association study (GWAS) with a panel of 181 SHWs using the wheat 9 K SNP iSelect array. The SHWs were evaluated for their response to the prevailing races of Pst at the seedling and adult plant stages, the latter in replicated field trials at two sites in Ethiopia in 2011. About 28% of the SHWs exhibited immunity at the seedling stage while 56% and 83% were resistant to Pst at the adult plant stage at Meraro and Arsi Robe, respectively. A total of 27 SNPs in nine genomic regions (1 BS, 2 AS, 2 BL, 3 BL, 3 DL, 5A, 5 BL, 6DS and 7A) were linked with resistance to Pst at the seedling stage, while 38 SNPs on 18 genomic regions were associated with resistance at the adult plant stage. Six genomic regions were commonly detected at both locations using a mixed linear model corrected for population structure, kinship relatedness and adjusted for false discovery rate (FDR). The loci on chromosome regions 1 AS, 3 DL, 6 DS and 7 AL appeared to be novel QTL; our results confirm that resynthesized wheat involving its progenitor species is a rich source of new stripe (yellow) rust resistance that may be useful in choosing SHWs and incorporating diverse yellow rust (YR) resistance loci into locally adapted wheat cultivars.Habtemariam ZegeyeAwais RasheedFarid MakdisAyele BadeboFrancis C OgbonnayaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 8, p e105593 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Habtemariam Zegeye Awais Rasheed Farid Makdis Ayele Badebo Francis C Ogbonnaya Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
description	Use of genetic diversity from related wild and domesticated species has made a significant contribution to improving wheat productivity. Synthetic hexaploid wheats (SHWs) exhibit natural genetic variation for resistance and/or tolerance to biotic and abiotic stresses. Stripe rust caused by (Puccinia striiformis f. sp. tritici; Pst), is an important disease of wheat worldwide. To characterise loci conferring resistance to stripe rust in SHWs, we conducted a genome-wide association study (GWAS) with a panel of 181 SHWs using the wheat 9 K SNP iSelect array. The SHWs were evaluated for their response to the prevailing races of Pst at the seedling and adult plant stages, the latter in replicated field trials at two sites in Ethiopia in 2011. About 28% of the SHWs exhibited immunity at the seedling stage while 56% and 83% were resistant to Pst at the adult plant stage at Meraro and Arsi Robe, respectively. A total of 27 SNPs in nine genomic regions (1 BS, 2 AS, 2 BL, 3 BL, 3 DL, 5A, 5 BL, 6DS and 7A) were linked with resistance to Pst at the seedling stage, while 38 SNPs on 18 genomic regions were associated with resistance at the adult plant stage. Six genomic regions were commonly detected at both locations using a mixed linear model corrected for population structure, kinship relatedness and adjusted for false discovery rate (FDR). The loci on chromosome regions 1 AS, 3 DL, 6 DS and 7 AL appeared to be novel QTL; our results confirm that resynthesized wheat involving its progenitor species is a rich source of new stripe (yellow) rust resistance that may be useful in choosing SHWs and incorporating diverse yellow rust (YR) resistance loci into locally adapted wheat cultivars.
format	article
author	Habtemariam Zegeye Awais Rasheed Farid Makdis Ayele Badebo Francis C Ogbonnaya
author_facet	Habtemariam Zegeye Awais Rasheed Farid Makdis Ayele Badebo Francis C Ogbonnaya
author_sort	Habtemariam Zegeye
title	Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
title_short	Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
title_full	Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
title_fullStr	Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
title_full_unstemmed	Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
title_sort	genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/8055581fe496495286f499176ad0ec21
work_keys_str_mv	AT habtemariamzegeye genomewideassociationmappingforseedlingandadultplantresistancetostriperustinsynthetichexaploidwheat AT awaisrasheed genomewideassociationmappingforseedlingandadultplantresistancetostriperustinsynthetichexaploidwheat AT faridmakdis genomewideassociationmappingforseedlingandadultplantresistancetostriperustinsynthetichexaploidwheat AT ayelebadebo genomewideassociationmappingforseedlingandadultplantresistancetostriperustinsynthetichexaploidwheat AT franciscogbonnaya genomewideassociationmappingforseedlingandadultplantresistancetostriperustinsynthetichexaploidwheat
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Genome-wide association mapping for seedling and adult plant resistance to stripe rust in synthetic hexaploid wheat.

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