Genome mapping of postzygotic hybrid necrosis in an interspecific pear population

作     者：Sara Montanari Lester Brewer Robert Lamberts Riccardo Velasco Mickael Malnoy Laure Perchepied Philippe Guérif Charles-Eric Durel Vincent G M Bus Susan E Gardiner David Chagné 

作者机构：Research and Innovation CentreFondazione Edmund MachVia Mach 1San Michele all’Adige38010TNItaly The New Zealand Institute for Plant&Food Research LimitedPalmerston North Research CentrePalmerston NorthNew Zealand Institut de Recherche en Horticulture et Semences-UMR1345Institut National de la Recherche Agronomique(INRA)SFR 4207 Quasav42 rue Georges MorelBeaucouzéF-49071France The New Zealand Institute for Plant&Food Research LimitedMotueka Research CentreMotuekaNew Zealand Institut de Recherche en Horticulture et Semences-UMR1345Universitéd’AngersAngersF-49045France The New Zealand Institute for Plant&Food Research LimitedHawke’s Bay Research CentreHavelock NorthNew Zealand 

出 版 物：《Horticulture Research》 (园艺研究（英文）)

年 卷 期：2016年第3卷第1期

页      面：326-337页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0901[农学-作物学] 0703[理学-化学] 0836[工学-生物工程] 0902[农学-园艺学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：SM was funded by the Fondazione Edmund Mach PhD School 

主　　题：breeding seedling dwarf 

摘      要：Deleterious epistatic interactions in plant inter-and intraspecific hybrids can cause a phenomenon known as hybrid necrosis,characterized by a typical seedling phenotype whose main distinguishing features are dwarfism,tissue necrosis and in some cases *** of the chromosome regions associated with this type of incompatibility is important not only to increase our understanding of the evolutionary diversification that led to speciation but also for breeding *** of molecular markers linked to the lethal genes will allow breeders to avoid incompatible inbred combinations that could affect the expression of important agronomic tratis co-segregating with these *** hybrid necrosis has been reported in several plant taxa,including Rosaceae species,this phenomenon has not been described previously in *** the interspecific pear population resulting from a cross between PEAR3(Pyrus bretschneideri×Pyrus communis)and‘Moonglow’(***),we observed two types of hybrid necrosis,expressed at different stages of plant *** a combination of previously mapped and newly developed genetic markers,we identified three chromosome regions associated with these two types of lethality,which were genetically *** type resulted from a negative epistatic interaction between a locus on linkage group 5(LG5)of PEAR3 and a locus on LG1 of‘Moonglow’,while the second type was due to a gene that maps to LG2 of PEAR3 and which either acts alone or more probably interacts with another gene of unknown location inherited from‘Moonglow’.