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High-density mapping suggests cytoplasmic male sterility with two restorer genes in almond×peach progenies

Horticulture Research 2015年第1期2卷 234-241页

作者： JoséManuel Donoso Iban Eduardo Roger Picañol ignasi batlle Werner Howad María JoséAranzana Pere Arús IRTA Centre de Recerca en Agrigenòmica CSIC-IRTA-UAB-UB Campus UAB Bellaterra(Cerdanyola del Vallès)08193 BarcelonaSpain IRTA.Centre de Mas de Bover.Crta.De Reus–El Morell Km 3.8.43120 Constantί TarragonaSpain INIA Av.Salamanca s/nSector Los ChoapinosRengoChile Rijk Zwaan Finca La Marina-Pj Lo Contreras s/n30395 La PueblaCartagenaSpain

Peach(Prunus persica)and almond(Prunus dulcis)are two sexually compatible species that produce fertile ***,a highly polymorphic species,is a potential source of new genes for peach that has a strongly eroded gene *** we describe the genetics of a male sterile phenotype that segregated in two almond(‘Texas’)×peach(‘Earlygold’)progenies:an F2(T×E)and a backcross one(T1E)to the‘Earlygold’***-density maps were developed using a 9k peach SNP chip and 135 simple-sequence *** highly syntenic and collinear maps were obtained:one for the F2(T×E)and two for the backcross,T1E(for the hybrid)and E(for‘Earlygold’).A major reduction of recombination was observed in the interspecific maps(T×E and T1E)compared to the intraspecific parent(E).The E map also had extensive monomorphic genomic regions suggesting the presence of large DNA fragments identical by *** data for the male sterility character were consistent with the existence of cytoplasmic male sterility,where individuals having the almond cytoplasm required the almond allele in at least one of two independent restorer genes,Rf1 and Rf2,to be *** restorer genes were located in a 3.4 Mbp fragment of linkage group 2(Rf1)and 1.4 Mbp of linkage group 6(Rf2).Both fragments contained several genes coding for pentatricopeptide proteins,demonstrated to be responsible for restoring fertility in other *** implications of these results for using almond as a source of novel variability in peach are discussed.

关键词： linkage restore mapping

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Almond population genomics and non-additive GWAS reveal new insights into almond dissemination history and candidate genes for nut traits and blooming time

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Horticulture Research 2023年第10期10卷 262-272页

作者： Felipe Pérez de los Cobos Eva Coindre Naima Dlalah Bénédicte Quilot-Turion ignasi batlle Pere Arús Iban Eduardo Henri Duval Fruticultura Institut de Recerca i Tecnologia Agroalimentàries(IRTA)Mas BovéCtra.Reus-El Morell Km 3843120 ConstantíTarragonaSpain Centre de Recerca en Agrigenòmica(CRAG) CSIC-IRTA-UAB-UB.Institut de Recerca i Tecnologia Agroalimentàries(IRTA)Cerdanyola del Vallès(Bellaterra)08193 BarcelonaSpain Centre for Research in Agricultural Genomics(CRAG)CSIC-IRTA-UAB-UB Campus UABEdifici CRAGCerdanyola del Vallès(Bellaterra)08193 BarcelonaSpain INRAE GAFLF-84143MontfavetFrance

Domestication drastically changed crop genomes,fixing alleles of interest and creating different genetic ***-wide association studies(GWASs)are a powerful tool to detect these alleles of interest(and so QTLs).In this study,we explored the genetic structure as well as additive and non-additive genotype-phenotype associations in a collection of 243 almond *** genetic structure analysis strongly supported the subdivision of the accessions into five ancestral groups,all formed by accessions with a common *** of these groups was formed exclusively by Spanish accessions,while the rest were mainly formed by accessions from China,Italy,France,and the *** results agree with archaeological and historical evidence that separate modern almond dissemination into four phases:Asiatic,Mediterranean,Californian,and southern *** total,we found 13 independent QTLs for nut weight,crack-out percentage,double kernels percentage,and blooming *** the 13 QTLs found,only one had an additive *** candidate gene analysis,we proposed Prudul26A013473 as a candidate gene responsible for the main QTL found in crack-out percentage,Prudul26A012082 and Prudul26A017782 as candidate genes for the QTLs found in double kernels percentage,and Prudul26A000954 as a candidate gene for the QTL found in blooming *** study enhances our knowledge of almond dissemination history and will have a great impact on almond breeding.

关键词： additive GWAS traits

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Pedigree analysis of 220 almond genotypes reveals two world mainstream breeding lines based on only three different cultivars

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Horticulture Research 2021年第1期8卷 72-82页

作者： Felipe Perez de los Cobos Pedro J.Martinez-Garcia Agusti Romero Xavier Miarnau Iban Eduardo Werner Howad Mourad Mnejja Federico Dicenta Rafel Socias i Company Maria J.Rubio-Cabetas Thomas M.Gradziel Michelle Wirthensohn Henri Duval Doron Holland Pere Arus Francisco J.Vargas ignasi batlle Institut de Recerca i Tecnologia Agroalimentaries(IRTA) Mas BoveCtra.Reus-El Morell Km 3843120 ConstantiTarragonaSpain Institut de Recerca i Tecnologia Agroalimentaries(IRTA) Centre de Recerca en Agrigenomica(CRAG)CSIC-IRTA-UAB-UB.Cerdanyola del Valles(Bellaterra)08193 BarcelonaSpain Centro de Edafologia y Biologia Aplicada del Segura Consejo Superior de Investigaciones Cientificas(CEBAS-CSIC)P.O.Box 16430100 EspinardoMurciaSpain Institut de Recerca i Tecnologia Agroalimentaries(IRTA) FruitcentrePCiTALGardeny ParkFruitcentre Building25003 LleidaSpain Centro de Investigacion y Tecnologia Agroalimentaria de Aragon(CITA) Avda.Montanana 93050059ZaragozaInstituto Agroalimentario de Aragon IA2(CITA-Universidad de Zaragoza)ZaragozaSpain University of California 1 Shields AvenueDavisCA 95616USA University of Adelaide Waite ResearchSchool of AgricultureFood and WinePMB 1Glen OsmondAdelaideSA 5064Australia Institut National de la Recherche Agronomique(INRA) Domain St.Maurice CS 6009484143 Montfavet CedexFrance Agricultural Research Organization Newe-Ya’ar Research CenterP.O.Box 1021Ramat Yishad 30095Israel

Loss of genetic variability is an increasing challenge in tree breeding programs due to the repeated use of a reduced number of founder ***,in almond,little is known about the genetic variability in current breeding stocks,although several cases of inbreeding depression have been *** gain insights into the genetic structure in modern breeding programs worldwide,marker-verified pedigree data of 220 almond cultivars and breeding selections were *** coefficients,pairwise relatedness,and genetic contribution were calculated for these *** results reveal two mainstream breeding lines based on three cultivars:“Tuono”,“Cristomorto”,and“Nonpareil”.Descendants from“Tuono”or“Cristomorto”number 76(sharing 34 descendants),while“Nonpareil”has 71 *** mean inbreeding coefficient of the analyzed genotypes was 0.041,with 14 genotypes presenting a high inbreeding coefficient,over *** programs from France,the USA,and Spain showed inbreeding coefficients of 0.075,0.070,and 0.037,*** to their genetic contribution,modern cultivars from Israel,France,the USA,Spain,and Australia trace back to a maximum of six main founding *** the group of 65 genotypes carrying the S f allele for self-compatibility,the mean relatedness coefficient was 0.125,with“Tuono”as the main founding genotype(24.7%of total genetic contribution).The results broaden our understanding about the tendencies followed in almond breeding over the last 50 years and will have a large impact into breeding decision-making process *** current genetic variability is required in almond breeding programs to assure genetic gain and continuing breeding progress.

关键词： breeding cultivar founding

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