Exploring almond genetic variability useful for peach improvement: mapping major genes and QTLs in two interspecific almond × peach populations

Donoso, José Manuel; Picañol, Roger; Serra, Octávio; Howad, Werner; Alegre, Simó; Arús, Pere; Eduardo, Iban

doi:10.1007/s11032-016-0441-7

Cited by 52 publications

(61 citation statements)

References 49 publications

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“…A positive correlation with maturity date could suggest that earlier fruits are less susceptible to brown rot than late-ripening fruits, as pointed out by several authors, but this pattern was not clearly observed in this study. However, to further investigate the effect of MD in the QTL analysis, the closest marker to a major QTL for MD on G4 identified both in this study and, using several populations from different Prunus species, 23,40 was used as a cofactor in MQM mapping. Notably, no other QTL or variations in fungal decay at several time points were detected.…”

Section: Discussionmentioning

confidence: 99%

“…A previously described interspecific backcross one (BC1) population of 185 individuals derived from a hybrid plant (‘MB 1.37’) from the cross between ‘Texas’ (almond) and ‘Earlygold’ (peach), backcrossed to ‘Earlygold’, for which a genetic map exists, was used in this research . In this BC1 population (named T1E) all individuals are peach type . Fruit that had not received any synthetic fungicide applications in the field or postharvest, and that were free of visible wounds and rot, were obtained from the Experimental Station of Lleida in Gimenells (Catalonia, Spain) at commercial maturity.…”

Section: Methodsmentioning

confidence: 99%

“…25 In this BC1 population (named T1E) all individuals are peach type. 23 Fruit that had not received any synthetic fungicide applications in the field or postharvest, and that were free of visible wounds and rot, were obtained from the Experimental Station of Lleida in Gimenells (Catalonia, Spain) at commercial maturity. The harvest date was defined in accordance with visual colour changes, manual evaluation of firmness and measurements of soluble solids content (SSC) that were taken weekly from a sample of three fruits per tree.…”

Section: Plant Materialsmentioning

confidence: 99%

“…Furthermore, these results suggest that the identification of QTLs and the subsequent application of marker-assisted selection (MAS) could be an efficient strategy to develop varieties resistant to brown rot. 20 This type of approach is also used in peach to introduce resistance to powdery mildew 19,[21][22][23] and in apple, where genes for scab resistance (Venturia inaequalis) have been introduced from a wild accession of Malus floribunda. 24 The main obstacle to the development of highly brown rot-resistant cultivars is the limited number of tolerant sources that have been identified.…”

Section: Introductionmentioning

confidence: 99%

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Exploring sources of resistance to brown rot in an interspecific almond × peach population

et al. 2019

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BACKGROUND Monilinia spp. are responsible for brown rot, one of the most significant stone fruit diseases. Planting resistant cultivars seems a promising alternative, although most commercial cultivars are susceptible to brown rot. The aim of this study was to explore resistance to Monilinia fructicola over two seasons in a backcross one interspecific population between almond ‘Texas’ and peach ‘Earlygold’ (named T1E). RESULTS ‘Texas’ almond was resistant to brown rot inoculation, whereas peach was highly susceptible. Phenotypic data from the T1E population indicated wide differences in response to M. fructicola. Additionally, several non‐wounded individuals exhibited resistance to brown rot. Quantitative trait loci (QTLs) were identified in several linkage groups, but only two proximal QTLs in G4 were detected over both seasons and accounted for 11.3–16.2% of the phenotypic variation. CONCLUSION Analysis of the progeny allowed the identification of resistant genotypes that could serve as a source of resistance in peach breeding programs. The finding of loci associated with brown rot resistance would shed light on implementing a strategy based on marker‐assisted selection (MAS) for introgression of this trait into elite peach materials. New peach cultivars resistant to brown rot may contribute to the implementation of more sustainable crop protection strategies. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Plant Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploring sources of resistance to brown rot in an interspecific almond × peach population

et al. 2019

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“…To date, candidate genes involved in biosynthesis, regulation, and response to induction by environmental stimuli, such as light, and temperature, and sugar and plant hormones, have been identified in peach (Donoso et al, 2016;Eduardo et al, 2011;Frett et al, 2014;Jaakola, 2013;Jiao et al, 2014;Rahim et al, 2014;Zhou et al, 2017). Among the biosynthetic genes identified, there are a number of structural genes that directly encode enzymes required for the biosynthesis of anthocyanin, including chalcone synthase (CHS), chalcone isomerase, leucoanthocyanidin dioxygenase/anthocyanidin synthase, and UDP-glucose flavonoid 3-O-glucosyltransferase (UFGT) (Tsukaya, 2004).…”

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confidence: 99%

Genome-wide Association Analysis of Red Flesh Character Based on Resequencing Approach in Peach

Huihui¹,

Cao²,

Zhu³

et al. 2019

J. Amer. Soc. Hort. Sci.

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Anthocyanins are important molecules that are responsible for fruit color formation and are also beneficial to human health. To date, numerous structural and regulatory genes associated with anthocyanin biosynthesis in peach (Prunus persica) have been reported based on linkage analysis. In this study, we sought to identify further genes associated with anthocyanin content in peach by conducting a genome-wide association analysis of 129 peach accessions to detect markers associated with the trait. Significant association signals were detected when anthocyanin content was considered a qualitative character but not when it was considered a quantitative trait. We detected an association region located between 11.7 and 13.1 Mb in chromosome 1, a region in which only 133 of 146 genes have previously been functionally annotated. Gene ontology annotation of the genes in this region showed that membrane-associated genes (including one gene encoding a chloride channel protein and 17 sugar transport/carrier-associated genes) were significantly enriched, and we focused on these in subsequent analyses. Based on in vitro induction of anthocyanins in fruit flesh using different exogenously applied sugars and subsequent culture, we found that the expression level of 3 of the 18 membrane-associated genes, Prupe.1G156300, Prupe.1G156900, and Prupe.1G157000, increased during induction treatment. Furthermore, during the fruit development period of a white-fleshed and a red-fleshed peach cultivar, the expression of one gene encoding a transmembrane sugar transport protein was observed to be positively correlated with anthocyanin biosynthesis. These results will facilitate understanding of the molecular mechanism of anthocyanin biosynthesis in peach.

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Advances in Gene Mapping Studies in Tree Nut Crops

Marrano,

Arab,

Bernard

et al. 2023

Annual Plant Reviews Online

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Nut tree species have a great economic and cultural value for many countries across the world. Their highly nutritious content makes them one of the most favourite healthy foods of the global population, with strong evidence of their positive impact on human health. Nut tree crops are very diverse in terms of nut chemical content and shape, growing climates, and domestication history. However, all of them have a very long juvenile phase that makes classical breeding challenging and time consuming. Also, their cultivation is very resource demanding. The application of genomic‐assisted breeding can accelerate the development of adaptive cultivars of nut tree species. In this article, we summarize recent successes in genomics for nut tree crops, specifically almond, chestnut, hazelnut, pecan, pistachio, and walnut. We report the recent discoveries on the genetic control of target traits for the genetic improvement of these species, with suggestions for future directions and breeding applications.

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Exploring almond genetic variability useful for peach improvement: mapping major genes and QTLs in two interspecific almond × peach populations

Cited by 52 publications

References 49 publications

Exploring sources of resistance to brown rot in an interspecific almond × peach population

Exploring sources of resistance to brown rot in an interspecific almond × peach population

Genome-wide Association Analysis of Red Flesh Character Based on Resequencing Approach in Peach

Advances in Gene Mapping Studies in Tree Nut Crops

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