naa a22 4500 51073118X CHVBK 20180411082953.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11295-012-0580-x doi (NATIONALLICENCE)springer-10.1007/s11295-012-0580-x Mapping quantitative trait loci associated with resistance to bacterial spot ( Xanthomonas arboricola pv. pruni ) in peach [Elektronische Daten] [Nannan Yang, Gregory Reighard, David Ritchie, William Okie, Ksenija Gasic] Bacterial spot, caused by Xanthomonas arboricola pv. pruni (Xap), is a serious disease that can affect peach fruit quality and production worldwide. This disease causes severe defoliation and blemishing of fruit, particularly in areas with high rainfall, strong winds, high humidity, and sandy soil. The molecular basis of its tolerance and susceptibility in peach is yet to be understood. An F2 population of 63 genotypes derived from a cross between peaches "O'Henry” (susceptible) and "Clayton” (resistant) has been used for linkage map construction and quantitative trait loci (QTL) mapping. Phenotypic data for leaf and fruit response to Xap infection were collected over 2years at two locations. A high-density genetic linkage map that covers a genetic distance of 421.4cM with an average spacing between markers of 1.6cM was developed using the International Peach Single Nucleotide Polymorphism Consortium (IPSC) 9K array v1. Fourteen QTLs with an additive effect on Xap resistance were detected, including four major QTLs on linkage groups (LG) 1, 4, 5, and 6. Major QTLs, Xap.Pp.OC-4.1 and Xap.Pp.OC-4.2, on LG4 were associated with Xap resistance in leaf; Xap.Pp.OC-5.1 on LG5 was associated with Xap resistance in both leaf and fruit, while Xap.Pp.OC-1.2 and Xap.Pp.OC-6.1 on LG1 and LG6, respectively, were associated with Xap resistance in fruit. This suggested separate regulation of leaf and fruit resistance for Xap in peach as well as participation of genes involved in general plant response to biotic stress. The potential for marker-assisted selection for Xap resistance in peach is discussed. Springer-Verlag Berlin Heidelberg, 2012 SNP markers nationallicence Bacterial leaf and fruit diseases nationallicence Peach nationallicence Quantitative trait loci nationallicence Yang Nannan SAFES, Clemson University, 29634, Clemson, SC, USA aut Reighard Gregory SAFES, Clemson University, 29634, Clemson, SC, USA aut Ritchie David Department of Plant Pathology, North Carolina State University, 27695, Raleigh, NC, USA aut Okie William ARS-USDA, S.E. Fruit and Tree Nut Research Lab, 31008, Byron, GA, USA aut Gasic Ksenija SAFES, Clemson University, 29634, Clemson, SC, USA aut Tree Genetics & Genomes Springer-Verlag 9/2(2013-04-01), 573-586 1614-2942 9:2<573 2013 9 11295 https://doi.org/10.1007/s11295-012-0580-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11295-012-0580-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang Nannan SAFES, Clemson University, 29634, Clemson, SC, USA aut NATIONALLICENCE 700 1- Reighard Gregory SAFES, Clemson University, 29634, Clemson, SC, USA aut NATIONALLICENCE 700 1- Ritchie David Department of Plant Pathology, North Carolina State University, 27695, Raleigh, NC, USA aut NATIONALLICENCE 700 1- Okie William ARS-USDA, S.E. Fruit and Tree Nut Research Lab, 31008, Byron, GA, USA aut NATIONALLICENCE 700 1- Gasic Ksenija SAFES, Clemson University, 29634, Clemson, SC, USA aut NATIONALLICENCE 773 0- Tree Genetics & Genomes Springer-Verlag 9/2(2013-04-01), 573-586 1614-2942 9:2<573 2013 9 11295 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer