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| 1 | Ascorbic acid and prunasin,two candidate biomarkers for endodormancy release in almond flower buds identified by a nontargeted metabolomic study显示文摘Temperate fruit trees belonging to Prunus species have the ability to suspend(induce dormancy)and resume growth periodically in response to environmental and seasonal conditions.Endodormancy release requires the long-term accumulation of chill.Upon accumulation of cultivar-specific chill requirements,plants enter the state of ecodormancy,which means the ability to grow has been restored,depending on the fulfilment of heat requirements.As many different metabolic pathways are implicated in endodormancy release,we have performed a metabolomic analysis,using the ultra-high-performance liquid chromatography–quadrupole time-of-flying(UPLC–QToF)technique.We assayed flower buds in different stages of endodormancy in four almond cultivars with different flowering times:the extra-early Desmayo Largueta,the late Antoñeta,the extra-late Penta,and the ultra-late Tardona.An orthogonal projection to latent-structure discriminant-analysis model was created to observe differences between endodormant and ecodormant flower buds.The metabolites showing the most significant variation were searched against the Metlin,HMDB,and KEGG libraries,which allowed us to identify 87 metabolites.These metabolites were subsequently assigned to specific pathways,such as abscisic acid biosynthesis,phenylpropanoid biosynthesis,and D-sorbitol metabolism,among others.The two metabolites that exhibited the most significant variations in all the cultivars studied with fold changes of up to 6.49 were ascorbic acid and prunasin.For the first time,these two metabolites have been proposed as potential biomarkers for endodormancy release in almond.Given the high synteny present between the Rosaceae species,these results could be extrapolated to other important crops like peach,plum,cherry,or apricot,among others. | Jesús Guillamón Guillamón Ángela Sánchez Prudencio JoséEnrique Yuste Federico Dicenta Raquel Sánchez-Pérez | 2020 | Horticulture Research2020，7，1： | 2 |
| 2 | Rain effect on pollen-stigma adhesion and fertilization in almond显示文摘 | Ortega E Dicenta F Egea J | | 0，，03： | 1 |
| 3 | Deter- mination of incompatibility genotypes in almond u- sing first and second intron consensusp rimers: de- tection of new S alleles and correction of reported S genotypes 显示文摘 | Ortega E Sutherland B G Dicenta F | 2005 | Plant Breed2005，124，： | 1 |
| 4 | Breaking seed dormancy in almond显示文摘 | Marta Garcia-Gusano Pedro Martinez-Gomez Federico Dicenta | 2004 | Scientia Horticulturae2004，99，： | 1 |
| 5 | Microsomal epoxide hydrolase and glutathione S-transferase polymorphisms in relation to laryngeal carcinoma risk显示文摘 | Jordi To-Figueras Manuel Gené Jesús Gómez-Catalán Esther Piqué Natividad Borrego Manuel Caballero Francesc Cruellas Anna Raya Manuel Dicenta Jacint Corbella | 2002 | Cancer Letters2002，，1： | 1 |
| 6 | A stylar ribonuclease assay to detect selfcompatible seedlings in almond progenies显示文摘 | Bog kovi R Tobutt K R Duval H BatUe I Dicenta F Vargas J | 1999 | Theor Appl Genet1999，99，： | 1 |
| 7 | Chill-ing and heat requirements of almond cultivars for owering显示文摘 | EGEA J ORTEGA E MARTíNEZ-Gómez P DICENTA F | 2003 | EnvironExp Bot2003，50，： | 1 |
| 8 | Determination of incompatibility genotypes in almond using first and second intron consensus primers: detection of new S alleles and correction of reported S genotypes 显示文摘 | Ortega E Sutherland B G Dicenta F | 2005 | Plant Breed2005，124，： | 1 |
| 9 | Pedigree analysis of 220 almond genotypes reveals two world mainstream breeding lines based on only three different cultivars显示文摘Loss of genetic variability is an increasing challenge in tree breeding programs due to the repeated use of a reduced number of founder genotypes.However,in almond,little is known about the genetic variability in current breeding stocks,although several cases of inbreeding depression have been reported.To gain insights into the genetic structure in modern breeding programs worldwide,marker-verified pedigree data of 220 almond cultivars and breeding selections were analyzed.Inbreeding coefficients,pairwise relatedness,and genetic contribution were calculated for these genotypes.The 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 descendants.The mean inbreeding coefficient of the analyzed genotypes was 0.041,with 14 genotypes presenting a high inbreeding coefficient,over 0.250.Breeding programs from France,the USA,and Spain showed inbreeding coefficients of 0.075,0.070,and 0.037,respectively.According to their genetic contribution,modern cultivars from Israel,France,the USA,Spain,and Australia trace back to a maximum of six main founding genotypes.Among 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 worldwide.Increasing current genetic variability is required in almond breeding programs to assure genetic gain and continuing breeding progress. | 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 | 2021 | Horticulture Research2021，8，1： | 0 |
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