Genomic relationships between wild and cultivated Brassica oleracea L. with emphasis on the origination of cultivated crops

Mei, Jiaqin; Li, Q.; Xu, Yang; Qian, Lunwen; Liu, L.; Yin, Jing; Frauen, Martin; Li, J.; Qian, Wei

doi:10.1007/s10722-009-9504-5

Cited by 25 publications

(26 citation statements)

References 26 publications

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“…However, unexpectedly B. cretica as a member of the B. oleracea cytodeme clustered within the same group. The remaining B. oleracea genotypes were found in clusters 2, 3, and 5, thus confirming earlier reports describing B. oleracea as an 'incredible diverse' species (Mei et al 2010; and references therein). Cluster 2 is linked to the B. rapa cluster 1 with a weak bootstrap value of less than 50 % (data not shown).…”

Section: Discussionsupporting

confidence: 89%

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Cytoplasmic diversity of Brassica napus L., Brassica oleracea L. and Brassica rapa L. as determined by chloroplast microsatellite markers

Zamani-Nour

Clemens

Möllers

2012

Genet Resour Crop Evol

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Cytoplasmic genomes in most angiosperms are known to be maternally inherited. Oilseed rape (Brassica napus L.) as a natural amphidiploid species hence may carry the B. oleracea L. or the B. rapa L. cytoplasm, depending on the cross direction. The presence of either the B. oleracea or the B. rapa cytoplasm in oilseed rape has been reported to affect agronomically important traits. However, to date little is known about the cytoplasmic composition and genetic diversity of current winter oilseed rape cultivars and breeding material. The aim of this study was to assess the usefulness of 40 previously published chloroplast cpSSR markers from Brassica species and Arabidopsis thaliana (L.) Heynh. for distinguishing the cytoplasms of 49 different genotypes of B. napus and its diploid ancestor species. Results showed that only 14 out of the 40 tested primer combinations were suitable to distinguish the cytoplasms of a test set of 8 Brassica genotypes. With the 14 primer pairs 64 different cpSSR alleles were identified in the set of 49 genotypes. Cluster analysis indicated distinct groups for the cytoplasms of B. napus, B. rapa, and B. oleracea. However, an unambiguous identification and classification of the cytoplasm types was not possible in all cases with the available polymorphic set of cpSSR primer pairs.

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Section: Discussionsupporting

confidence: 89%

“…oleracea 7695 and cultivated B. oleracea forms in cluster 5. The (Lázaro and Aguinagalde 1998a,b;Allender et al 2007;Mei et al 2010). In the present study, Brassica insularis grouped together with B. hilarionis and B. napus genotypes in cluster 2.…”

Section: Discussionsupporting

confidence: 57%

Cytoplasmic diversity of Brassica napus L., Brassica oleracea L. and Brassica rapa L. as determined by chloroplast microsatellite markers

Zamani-Nour

Clemens

Möllers

2012

Genet Resour Crop Evol

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“…However, our data could suggest that there is tremendous genetic potential to improve rapeseed resistance against S. sclerotiorum with wild types of B. oleracea, such as B. rupestris, B. incana, B. insularis and B. villosa which were found to possess high level of resistance. It is interesting to mention that these four wild types of B. oleracea which mainly distributed in Sicily, Italia (Snogerup et al 1990), possess similar genetic background with each other, and exhibit genetic diversity from the other types of B. oleracea (Lannér et al 1997;Lázaro and Aguinagalde 1998a, b;Mei et al 2010b). Whether the Sicilian region represents one of the resistance source centres against S. sclerotiorum needs to be further studied.…”

Section: Discussionmentioning

confidence: 99%

Identification of resistant sources against Sclerotinia sclerotiorum in Brassica species with emphasis on B. oleracea

et al. 2010

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Stem rot caused by Sclerotinia sclerotiorum is one of the most devastating diseases of rapeseed (Brassica napus L.) which causes huge loss in rapeseed production. Genetic sources with high level of resistance has not been found in rapeseed. In this study, 68 accessions in six Brassica species, including 47 accessions of B. oleracea, were evaluated for leaf and stem resistance to S. sclerotiorum. Large variation of resistance was found in Brassica, with maximum differences of 5-and 57-folds in leaf and stem resistance respectively. B. oleracea, especially its wild types such as B. rupestris, B. incana, B. insularis, and B. villosa showed high level of resistance. Our data suggest that wild types of B. oleracea possess tremendous potential for improving S. sclerotiorum resistance of rapeseed.

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“…The genetic diversity within B. oleracea crops appears to be generally lower than within wild taxa, as exemplified in analyses by Mei et al () on seven B. oleracea crops and by Hintum et al () on genebank accessions of white cabbages. Allender et al () found a wealth of diversity revealed by chloroplast SSRs among the Mediterranean wild species, contrasting with an apparent absence of chloroplast diversity in B. oleracea crops and contemporary UK natural populations of B. oleracea .…”

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confidence: 99%

Genetic diversity and population structure of leafy kale andBrassica rupestrisRaf. in south Italy

Maggioni

Bothmer

Poulsen³

et al. 2014

Hereditas

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Local varieties of leafy kales (Brassica oleracea L.) are grown in home gardens in Calabria and Sicily for self-consumption, in the same area where the wild relative Brassica rupestris Raf. also grows. With the use of AFLP markers, comparisons were made of the genetic diversity and population structure of ten wild and 22 cultivated populations, as well as of a hybrid population and of four commercial cultivars of different B. oleracea crops. The level of genetic diversity was higher in leafy kales than in wild populations and this diversity was mainly distributed within populations. Wild populations remained distinct from cultivated material. Additionally, most wild populations were distinctively isolated from each other. On the other hand, it was not possible to molecularly distinguish even geographically distant leafy kale populations from each other or from different B. oleracea crops. It was possible to detect inter-crossing between leafy kales and B. rupestris. Findings from this study illustrate the existing level of genetic diversity in the B. oleracea gene pool. Individual populations (either wild or leafy kales) with higher levels of genetic diversity have been identified and suggestions are given for an informed conservation strategy. Domestication hypotheses are also discussed.

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Genomic relationships between wild and cultivated Brassica oleracea L. with emphasis on the origination of cultivated crops

Cited by 25 publications

References 26 publications

Cytoplasmic diversity of Brassica napus L., Brassica oleracea L. and Brassica rapa L. as determined by chloroplast microsatellite markers

Cytoplasmic diversity of Brassica napus L., Brassica oleracea L. and Brassica rapa L. as determined by chloroplast microsatellite markers

Identification of resistant sources against Sclerotinia sclerotiorum in Brassica species with emphasis on B. oleracea

Genetic diversity and population structure of leafy kale andBrassica rupestrisRaf. in south Italy

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