Structured diversity in octoploid strawberry cultivars: importance of the old European germplasm

Horvath, Aniko; Sánchez-Sevilla, José F.; Punelli, F.; Richard, L.; Sesmero, Rafael; Leone, Agostino; Hoefer, Michael; Chartier, Philippe; Balsemin, Emilie; Barreneche, Teresa; Denoyés-Rothan, B.

doi:10.1111/j.1744-7348.2011.00503.x

Cited by 29 publications

(35 citation statements)

References 50 publications

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“…The common cultivated strawberry has an octoploid genome (2n = 8x = 56) that resulted from an accidental hybridization between two related species, the scarlet strawberry (Fragaria virginiana) that originated in North America and the South American domesticated Fragaria chiloensis (Horvath et al, 2011). The origin of strawberry and the early breeding practices reduced the initial genetic variation.…”

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confidence: 99%

Metabolic Interaction between Anthocyanin and Lignin Biosynthesis Is Associated with Peroxidase FaPRX27 in Strawberry Fruit

et al. 2013

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Plant phenolics have drawn increasing attention due to their potential nutritional benefits. Although the basic reactions of the phenolics biosynthetic pathways in plants have been intensively analyzed, the regulation of their accumulation and flux through the pathway is not that well established. The aim of this study was to use a strawberry (Fragaria × ananassa) microarray to investigate gene expression patterns associated with the accumulation of phenylpropanoids, flavonoids, and anthocyanins in strawberry fruit. An examination of the transcriptome, coupled with metabolite profiling data from different commercial varieties, was undertaken to identify genes whose expression correlated with altered phenolics composition. Seventeen comparative microarray analyses revealed 15 genes that were differentially (more than 200-fold) expressed in phenolics-rich versus phenolics-poor varieties. The results were validated by heterologous expression of the peroxidase FaPRX27 gene, which showed the highest altered expression level (more than 900-fold). The encoded protein was functionally characterized and is assumed to be involved in lignin formation during strawberry fruit ripening. Quantitative trait locus analysis indicated that the genomic region of FaPRX27 is associated with the fruit color trait. Down-regulation of the CHALCONE SYNTHASE gene and concomitant induction of FaPRX27 expression diverted the flux from anthocyanins to lignin. The results highlight the competition of the different phenolics pathways for their common precursors. The list of the 15 candidates provides new genes that are likely to impact polyphenol accumulation in strawberry fruit and could be used to develop molecular markers to select phenolics-rich germplasm.

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confidence: 99%

Metabolic Interaction between Anthocyanin and Lignin Biosynthesis Is Associated with Peroxidase FaPRX27 in Strawberry Fruit

et al. 2013

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“…As an example, pedigrees of 134 North American cultivars were traced and shown to originate from only 17 cytoplasmic sources [25]. Despite introgressions of wild strawberry germplasm increased initial diversity of the cultivated strawberry, loss of diversity was observed in modern strawberry cultivars [26,27]. However, our results showed that advanced lines can display large variability from high to low level of resistance (Table 5).…”

Section: Discussionmentioning

confidence: 77%

Genetic variation of resistance of the cultivated strawberry to crown rot caused by Phytophthora cactorum

Schafleitner

Bonnet

Pedeprat

et al. 2013

Journal of Berry Research

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Evaluation of strawberry resistance to crown rot caused by Phytophthora cactorum is usually performed on a limited number of genotypes. The major objective of this study was to screen large genetic resources to identify potential parents that can be further used in breeding programs. Plants were inoculated by wounding the crown and placing a mycelium disk on the wound. Firstly, plug and cold stored plants were evaluated for their susceptibility to P. cactorum. Secondly, a total of 107 genotypes was evaluated using cold stored plants. Plug plants were very low affected by the wounding inoculation with P. cactorum whatever the genotype, whereas results obtained using cold stored plants consistently reflected the susceptibility of the genotype to crown rot. By using cold stored plants, we evaluated the susceptibility of 70 varieties and 37 advanced lines. Among the genotypes, we identified varieties such as Cirafine or Cireine with high level of resistance similar to the one of Senga Sengana. These data will be useful for choosing parents in breeding programs and for validation of markers linked to the resistance to P. cactorum.

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“…Further cluster analysis could be realized by joining information about morphological characters and any molecular biological analysis. Horvath and co-workers [31] identified four sub populations of the genetic structure of 87 strawberry genotypes by Bayesian analyses of 23 SSR-Markers. Twenty two of the cultivars in the current study were included in the genetic study of Horvath et al [31] and representatives of all 4 sub populations could be identified.…”

Section: Discussionmentioning

confidence: 99%

“…Horvath and co-workers [31] identified four sub populations of the genetic structure of 87 strawberry genotypes by Bayesian analyses of 23 SSR-Markers. Twenty two of the cultivars in the current study were included in the genetic study of Horvath et al [31] and representatives of all 4 sub populations could be identified. For further evaluation of strawberry cultivars, analyses of fruit nutritional compounds like antioxidant capacity, polyphenols and anthocyans [32] and the evaluation of disease resistance would be of great importance [33,34].…”

Section: Discussionmentioning

confidence: 99%

Morphological evaluation of 108 strawberry cultivars – and consequences for the use of descriptors

Höfer

Drewes-Alwarez

Scheewe

et al. 2012

Journal of Berry Research

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Strawberry cultivars in current commercial use have a very narrow genetic base and reduced morphological and genetic diversity that puts them at risk from disease and climate change. Germplasm collections hold examples of the agricultural biodiversity of small berries where they are conserved, characterized and made available to breeders to improve productivity. Phenological evaluations of existing strawberry cultivars provide information for use by breeders in developing cultivars with improved qualities and more diverse genetic background. Leaves, flowers and fruits are the most important morphological descriptors for identification of strawberry cultivars. A comprehensive catalogue of descriptors drawn up by UPOV and IPGRI served as the basis for evaluation of 108 cultivars in a field trial. Each plot consisted of 21 one-year-old plants per genotype and plants were evaluated once with a range of descriptors; 10 of plant and leaf morphology, 7 of the flower and 25 of the fruit. On the basis of this comprehensive evaluation and data analysis, eighteen primary descriptors (plant, leaf, flower and fruit characteristics) independent of cultivation effects were selected for a large screening. Further descriptors for yield, inner fruit quality and disease resistance should be used as secondary descriptors as they are more environmentally influenced. These descriptors were proposed as appropriate primary and secondary descriptors for the European GENBERRY project of the cultivated strawberry (Fragaria x ananassa Duch.).

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Structured diversity in octoploid strawberry cultivars: importance of the old European germplasm

Cited by 29 publications

References 50 publications

Metabolic Interaction between Anthocyanin and Lignin Biosynthesis Is Associated with Peroxidase FaPRX27 in Strawberry Fruit

Metabolic Interaction between Anthocyanin and Lignin Biosynthesis Is Associated with Peroxidase FaPRX27 in Strawberry Fruit

Genetic variation of resistance of the cultivated strawberry to crown rot caused by Phytophthora cactorum

Morphological evaluation of 108 strawberry cultivars – and consequences for the use of descriptors

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