Chloroplast-DNA variation in cultivated and wild olive (Olea europaea L.)

Amane, M. El; Lumaret, R.; Hany, V.; Ouazzani, N.; Debain, C.; Vivier, G; Deguilloux, M.F.

doi:10.1007/s001220051217

Cited by 46 publications

(42 citation statements)

References 16 publications

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“…This result is consistent with previous reports based on the analysis of chloroplast DNA variation (Amane et al, 1999;Besnard et al, 2002), on the combination of mitochondial DNA and RAPDs variation (Besnard and Bervillé, 2000;Besnard et al, 2001a), and on RAPDs and rRNA genes polymorphism (Besnard et al, 2001b). More particularly, very clear genetic differentiation based on the occurrence of distinct allozymes was observed between genuinely wild oleaster populations from the western and eastern parts of the Mediterranean Basin, respectively, suggesting that they may have distinct phylogeographical origins.…”

Section: Geographic Allozyme Variation In Oleasterssupporting

confidence: 93%

Allozyme variation of oleaster populations (wild olive tree) (Olea europaea L.) in the Mediterranean Basin

et al. 2004

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As a result of the early domestication and extensive cultivation of the olive tree throughout the Mediterranean Basin, the wild-looking forms of olive (oleasters) presently observed constitute a complex, potentially ranging from wild to feral forms. Allozyme variation was analysed at 10 loci in 31 large and 44 small oleaster populations distributed in various habitats of the Mediterranean Basin and in two populations of the wild subspecies Olea europaea subsp (ssp) guanchica, endemic to the Canary islands and closely related to oleasters. At eight polymorphic loci, 25 alleles were identified. Genetic evidence that nondomesticated oleasters still survive locally was provided by the occurrence of four and one alleles shared exclusively by the eight western and two eastern oleaster populations, respectively, which were collected in forests potentially containing genuinely wild forms according to environmental, historical and demographic criteria. As reported previously from cytoplasmic and RAPDs analysis, substantial genetic differentiation was observed between the eastern oleaster populations genetically close to most olive clones cultivated in the Mediterranean Basin, and the western populations that are related to the wild Canarian populations. In addition, the occurrence of significantly lower heterozygosity in cultivated olive than in oleasters, whatever their origin, suggests that intensive selection involving inbreeding has taken place under cultivation to obtain particular characteristics in the olive cultivars.

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Section: Geographic Allozyme Variation In Oleasterssupporting

confidence: 93%

Allozyme variation of oleaster populations (wild olive tree) (Olea europaea L.) in the Mediterranean Basin

et al. 2004

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“…In fact, for example in Vasconcellea, fragment analysis showed even better resolution, likely due to the extra information derived from the length mutations (van Droogenbroeck et al 2004). The length (insersion/deletion, or indel) mutations, which, in a number of published studies (Amane et al 1999;Mohanty et al 2001;Dane et al 2004), accounted for most of the observed cpDNA variation, are often omitted from the majority of data analyses, thus discarding possibly useful information (Bremer 1991). In our results, the slight differences in fragment size of the bands with similar mobility, which were detected in all restriction profiles of the studied Hypericum species, could be explained by indel mutations.…”

Section: Pcr Amplifications and Restriction Of Pcr Productssupporting

confidence: 46%

RFLP analysis of cpDNA in the genus Hypericum

et al. 2010

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The chloroplast DNA of 43 species including 16 sections from the genus Hypericum was studied by PCR-RFLP analysis. The PCR-amplified products of four cpDNA regions, trnC-trnD, psbC-trnS, trnL-trnF and rbcL were digested with four restriction endonucleases. A high level of interspecific variation was detected while intraspecific diversity was not observed. The resulting parsimony analysis indicated the monophyletic assemblage of the sections Androsaemum, Olympia, Drosocarpium and Trigynobrathys. Monophyly of Hypericum is weakly supported, but close relationships of H. perforatum and H. maculatum are indicated. The members of Ascyreia are weakly resolved, but clustering of H. kouytchense and H. oblongifolium is well supported, however, H. reptans is nested with Olympia. CpDNA profiles and the positions on the parsimony tree indicate that the chloroplast donor among the putative parents of the hybrid species H. ×inodorum is H. androsaemum.

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“…While up to 2,600 different olive cultivars have been recorded (Rugini and Lavee 1992), the biodiversity within O. europaea has mainly been described in terms of morphology and agronomic behaviour and, to date, the variability within Olea germplasm has been little explored. Some biochemical and molecular analyses have been carried out using isozymes (Ouazzani et al 1993;Trujillo and Rallo 1995) or DNA polymorphisms (Fabbri et al 1995;Amane et al 1999;Angiolillo et al 1999;Besnard and Bervillè 2000;Hess et al 2000). However, we are far from having a suf- ficient understanding of the biodiversity among and within Olea species, olive cultivars and wild populations.…”

Section: Introductionmentioning

confidence: 99%

Diversity of Olea genotypes and the origin of cultivated olives

et al. 2002

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Tandem repeats belonging to three DNA sequence families ( OeTaq80, OeTaq178, and OeGEM86) were isolated from the nuclear DNA of Olea europaea cv. Carolea and dot-hybridized to the genomic DNA of 14 hypothetically different Olea species, 78 olive cultivars, and 14 wild olives. The copy number per unreplicated haploid genome of OeTaq80- and OeTaq178-related sequences was in the 10(7)-10(6) range and that of OeGEM86-related sequences was in the 10(5) range in cultivars, wild olives and some Olea species. A large variation in the frequency of repeats belonging to each sequence family was observed within each group of plants. Positive correlations existed in each genome between the frequencies of repeats belonging to each family, and their overall frequency was positively correlated to the genome size. Duncan grouping showed that the frequency variation of tandem repeats within each group of plants was not continuous. Two main groups and several subgroups of genotypes could be separated within both the olive cultivars and the wild olives. Discrete areas in the Mediterranean Basin could be delimited by the geographic distribution of cultivated olives with different genotypes and the wild plants were associated with the cultivars in these areas according to genotypic similarity. The Olea species could be divided into four genotypic groups. Three of these, comprising accessions from Asia and North Africa, showed similarity with the genotypes of cultivars and wild olives. These results suggest a polyphyletic origin of cultivated olives from different wild Olea forms distributed throughout the Mediterranean Basin.

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Chloroplast-DNA variation in cultivated and wild olive (Olea europaea L.)

Cited by 46 publications

References 16 publications

Allozyme variation of oleaster populations (wild olive tree) (Olea europaea L.) in the Mediterranean Basin

Allozyme variation of oleaster populations (wild olive tree) (Olea europaea L.) in the Mediterranean Basin

RFLP analysis of cpDNA in the genus Hypericum

Diversity of Olea genotypes and the origin of cultivated olives

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