Identification of self-(in)compatibility<i>S-</i>alleles and new cross-incompatibility groups in Tunisian apricot (<i>Prunus armeniaca</i>L.) cultivars

Lachkar, Amel; Fattouch, Sami; Ghazouani, Tesnime; Halász, Júlia; Pedryc, A.; Hegedűs, Attila; Mars, Messaoud

doi:10.1080/14620316.2013.11512997

Cited by 14 publications

(23 citation statements)

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“…Hal asz et al (2007) identified the original, nonmutant version of the S C -allele and named it S 8 . Later, it was shown, that this mutation might have emerged in the south east of Turkey and disseminated through Mediterranean Europe and North Africa Kodad et al, 2013b;Lachkar et al, 2013). In Morocco, most apricots grown in the oasis agro-ecosystem were confirmed to be self-compatible and carry the S C -haplotype (Kodad et al, 2013a,b).…”

Section: Introductionmentioning

confidence: 99%

Identification of a recently active Prunus‐specific non‐autonomous Mutator element with considerable genome shaping force

2014

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These authors contributed equally to this work. SUMMARYMiniature inverted-repeat transposable elements (MITEs) are known to contribute to the evolution of plants, but only limited information is available for MITEs in the Prunus genome. We identified a MITE that has been named Falling Stones, FaSt. All structural features (349-bp size, 82-bp terminal inverted repeats and 9-bp target site duplications) are consistent with this MITE being a putative member of the Mutator transposase superfamily. FaSt showed a preferential accumulation in the short AT-rich segments of the euchromatin region of the peach genome. DNA sequencing and pollination experiments have been performed to confirm that the nested insertion of FaSt into the S-haplotype-specific F-box gene of apricot resulted in the breakdown of self-incompatibility (SI). A bioinformatics-based survey of the known Rosaceae and other genomes and a newly designed polymerase chain reaction (PCR) assay verified the Prunoideae-specific occurrence of FaSt elements. Phylogenetic analysis suggested a recent activity of FaSt in the Prunus genome. The occurrence of a nested insertion in the apricot genome further supports the recent activity of FaSt in response to abiotic stress conditions. This study reports on a presumably active non-autonomous Mutator element in Prunus that exhibits a major indirect genome shaping force through inducing loss-of-function mutation in the SI locus.

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Section: Introductionmentioning

confidence: 99%

Identification of a recently active Prunus‐specific non‐autonomous Mutator element with considerable genome shaping force

2014

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“…The 45 self-incompatible cultivars were grouped in incompatibility groups according to their S genotypes following the numbering proposed by Halász et al ( 2010 ) and Lachkar et al ( 2013 ). While 26 of the cultivars analyzed were assigned to 11 different incompatibility groups, 19 cultivars were not assigned since only one S - RNase allele was detected (Table 2 ).…”

Section: Resultsmentioning

confidence: 99%

“…To date, 33 S -alleles ( S 1 to S 20 , S 22 to S 30 , S 52 , S 53 , S v , and S x ), including one allele for self-compatibility ( S c ), have been identified in apricot (Halász et al, 2005 ; Vilanova et al, 2005 ; Zhang et al, 2008 ; Muñoz-Sanz et al, 2017 ; Murathan et al, 2017 ), although additional alleles have been included in the NCBI database and not yet published. These studies allowed the determination of different apricot S -genotypes from different countries (Halász et al, 2010 ; Kodad et al, 2013a , b ; Muñoz-Sanz et al, 2017 ) that are included in, up to now, 17 incompatibility groups (Szabó and Nyéki, 1991 ; Egea and Burgos, 1996 ; Halász et al, 2010 ; Lachkar et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Optimizing Production in the New Generation of Apricot Cultivars: Self-incompatibility, S-RNase Allele Identification, and Incompatibility Group Assignment

et al. 2018

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Apricot (Prunus armeniaca L.) is a species of the Rosaceae that was originated in Central Asia, from where it entered Europe through Armenia. The release of an increasing number of new cultivars from different breeding programs is resulting in an important renewal of plant material worldwide. Although most traditional apricot cultivars in Europe are self-compatible, the use of self-incompatible cultivars as parental genotypes for breeding purposes is leading to the introduction of a number of new cultivars that behave as self-incompatible. As a consequence, there is an increasing need to interplant those new cultivars with cross-compatible cultivars to ensure fruit set in commercial orchards. However, the pollination requirements of many of these new cultivars are unknown. In this work, we analyze the pollination requirements of a group of 92 apricot cultivars, including traditional and newly-released cultivars from different breeding programs and countries. Self-compatibility was established by the observation of pollen tube behavior in self-pollinated flowers under the microscope. Incompatibility relationships between cultivars were established by the identification of S-alleles by PCR analysis. The self-(in)compatibility of 68 cultivars and the S-RNase genotype of 74 cultivars are reported herein for the first time. Approximately half of the cultivars (47) behaved as self-compatible and the other 45 as self-incompatible. Identification of S-alleles in self-incompatible cultivars allowed allocating them in 11 incompatibility groups, six of them reported here for the first time. The determination of pollination requirements and the incompatibility relationships between cultivars is highly valuable for the appropriate selection of apricot cultivars in commercial orchards and of parental genotypes in breeding programs. The approach described can be transferred to other woody perennial crops with similar problems.

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“…Sixty-three seedlings carried 36 different S-genotypes, and 11 combinations of S-alleles have not yet been detected in commercial cultivars (Burgos et al, 1998;Halász et al, 2005Halász et al, , 2007Halász et al, , 2010Lachkar et al, 2013). In such a diverse population, a selection pressure is required to significantly alter allele frequency.…”

Section: Discussionmentioning

confidence: 99%

“…From Chinese cultivars more than 50 S-alleles have been identified based on S-RNase activity staining, PCR, and sequencing (Jie et al, 2005;Zhang et al, 2008;Wu et al, 2009;Halász et al, 2012). In total, 17 cross-incompatibility groups (CIG) are known, including North American, European, Turkish, and Tunisian apricot cultivars (Szabó and Nyéki, 1991;Egea and Burgos, 1996;Halász et al, 2010;Milatovic et al, 2010;Lachkar et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

The S-genotyping of wild-grown apricots reveals only self-incompatible accessions in the Erzincan region of Turkey

et al. 2013

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IntroductionApricots are grown in warm temperate to subtropical regions of all continents. Over a long period, cultivation moved westward from China to Middle Asia and, further, to Europe. Turkey dominates world apricot production with approximately 500,000 t of annual production. Apricot has been widely cultivated for its edible fruit throughout Turkey since ancient times, especially in Inner Anatolia (e.g., Malatya, Erzincan, Aras valley). Some parts of Turkey, especially the Erzincan plain, have huge native seedling apricot populations. Some of the seedlings genetically reveal late blooming and a dwarf growth habit. These forms may be important for the extension of the harvest period (Ercisli, 2004). In addition, improving the antioxidant capacity of fruits is among the most recent breeding efforts in a range of Prunus species . This can be achieved by including wild accessions into the parental combinations since they accumulate higher levels of antioxidant polyphenolics in fruit compared to popular commercial cultivars (Yildiz et al.

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Identification of self-(in)compatibilityS-alleles and new cross-incompatibility groups in Tunisian apricot (Prunus armeniacaL.) cultivars

Cited by 14 publications

References 1 publication

Identification of a recently active Prunus‐specific non‐autonomous Mutator element with considerable genome shaping force

Identification of a recently active Prunus‐specific non‐autonomous Mutator element with considerable genome shaping force

Optimizing Production in the New Generation of Apricot Cultivars: Self-incompatibility, S-RNase Allele Identification, and Incompatibility Group Assignment

The S-genotyping of wild-grown apricots reveals only self-incompatible accessions in the Erzincan region of Turkey

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