Distinction between cultivated and wild chicory gene pools using AFLP markers

Cutsem, Pierre Van; Jardin, Patrick du; Boutte, Christophe; Beauwens, Thomas; Jacqmin, Sandrine; Vekemans, Xavier

doi:10.1007/s00122-003-1296-y

Cited by 29 publications

(22 citation statements)

References 15 publications

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“…Cultivation has not eroded the genetic diversity of the studied cultivated A. desertorum populations. Our findings are in accordance with several other cultivated plants where genetic diversity is as high as wild relatives (Hernandez-Verdugo et al 2001;Cutsem et al 2003;Khlestkina et al 2004;Shi et al 2008).…”

Section: Discussionsupporting

confidence: 93%

Genetic variation among wild and cultivatedAgropyron desertorumpopulations based on total protein profiles and phenotypic traits

Shanjani

Jafari

Calagari

2013

New Zealand Journal of Crop and Horticultural Science

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Genetic differentiation between co-occurring crops and their wild relatives will be greatly modified by crop-to-weed gene flow and variation between human and natural selective pressures. In this paper, the pattern of population differentiation within and among the wild and cultivated populations of Agropyron desertorum in Iran, with respect to both total protein profiles and phenotypic traits, is measured and compared. A total of 180 A. desertorum individuals from 14 wild and four cultivated populations were included in the study. The levels of genetic diversity in cultivated populations were similar to those in wild populations (mean percentage of polymorphic loci [PPL] 053.26% versus PPL 051.66%, and mean expected heterozygosity [He] 0 0.154 versus He 00.165). Neighbour-joining cluster analysis showed that wild populations and cultivated populations were not separated into two groups. The coefficient of genetic differentiation (Fst) between a cultivar and its wild progenitor was 0.060. For the 14 wild populations, a significant genetic differentiation among populations was found using AMOVA analysis (30% of total genetic variation resided among populations).

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Section: Discussionsupporting

confidence: 93%

Genetic variation among wild and cultivatedAgropyron desertorumpopulations based on total protein profiles and phenotypic traits

Shanjani

Jafari

Calagari

2013

New Zealand Journal of Crop and Horticultural Science

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“…It is also possible that cultivated chicory may disperse and establish in natural ecosystems, giving rise to gene flow with wild types. This is supported by finding of plants apparently belonging to the cultivated gene pool in ruderal places in Belgium (Van Cutsem et al 2003). …”

Section: Discussionsupporting

confidence: 70%

“…A similar trend was found when comparing wild and cultivated chicory (root types) from Belgium (Van Cutsem et al 2003), so apparently breeding of chicory cultivars has had little effect on the general genetic variation.…”

Section: Discussionsupporting

confidence: 50%

“…In order to detect single, timelimited gene flow events, they must be recent, and exposable from the genetic composition of single individuals. As markers strictly characteristic of either the wild or the cultivated gene pool in chicory are hard to find (Van Cutsem et al 2003;Kiers 2000), an assignment tool like STRUCTURE is extremely convenient for identifying introgressed plants in chicory.…”

Section: Discussionmentioning

confidence: 99%

“…It is growing in welldrained habitats along roads, rivers and in disturbed places (Kiers 2000). Gene flow between cultivated and wild chicory might be likely due to the overlap in distribution areas (Van Cutsem et al 2003), and the high rate of self-incompatibility of the species (Schoofs and de Langhe 1988). In nature, spontaneous hybridization between wild and cultivated chicory has been detected in a Danish population by Kiaer et al (2007) and Sørensen et al (2007).…”

Section: Introductionmentioning

confidence: 99%

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Spontaneous gene flow and population structure in wild and cultivated chicory, Cichorium intybus L.

Kiær

Felber

Flavell

et al. 2008

Genet Resour Crop Evol

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Spontaneous gene flow between wild and cultivated chicory, Cichorium intybus L., may have implications for the genetic structure and evolution of populations and varieties. One aspect of this cropwild gene flow is the dispersal of transgenes from genetically modified varieties, e.g. gene flow from GM chicory to natural chicory could have unwanted consequences. With the purpose to identify and quantify crop-wild gene flow in chicory, we analysed introgression in 19 wild chicory populations and 16 accessions of chicory varieties and landraces distributed across Northern, Central and Mediterranean Europe. The analysis used 281 AFLP markers and 75 SSAP markers giving a total of 356 polymorphic markers. Results from model based assignments with the program STRUCTURE indicated many incidents of recent gene flow. Gene flow was observed both between cultivars and wild populations, between landraces and wild populations, between different wild populations as well as between cultivars. Population structure visualized by distance-based clustering showed a North-South geographical structuring of the wild populations, and a general grouping of the cultivars corresponding to known origin. The results indicated, however, that the structuring between the two groups of wild and cultivated types was weak. As crop and wild recipients are genetically close and genes are transferred between the two types rather frequently, focus on mitigating crop-wild gene flow should be increased, before transgenic varieties are cultivated openly.

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Population structure in chicory (Cichorium intybus): A successful U.S. weed since the American revolutionary war

Závada

Malik

Kesseli

2017

Ecology and Evolution

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Plant invasions are recognized as major drivers of ecosystem change, yet the precise cause of these invasions remains unknown for many species. Frequency and modes of introductions during the first, transport and colonization, stages of the invasion process as well as phenotypic changes due to plasticity or changing genetic diversity and adaptation during later establishment and expansion stages can all influence the “success” of invasion. Here, we examine some of these factors in, and the origin of, a very successful weed, Cichorium intybus (chicory) which was introduced to North America in the 18th century and which now can be found in all 48 continental U.S. states and much of Canada. We genotyped a Eurasian collection of 11 chicory cultivars, nine native populations and a North American collection of 20 introduced wild populations which span the species range (592 individuals in total). To detect the geographic sources of North American chicory populations and to assess the genetic diversity among cultivars, native, and introduced populations, we used both a sequenced cpDNA region and 12 nuclear simple sequence repeat (SSR), microsatellite loci. Four cpDNA haplotypes were identified and revealed clear geographic subdivisions in the chicory native range and an interspecific hybrid origin of Radicchio group. Nuclear data suggested that domesticated lines deliberately introduced to North America were major contributors to extant weedy populations, although unintended sources such as seed contaminants likely also played important roles. The high private allelic richness and novel genetic groups were detected in some introduced populations, suggesting the potential for local adaptation in natural sites such as deserts and nature reserves. Our findings suggest that the current populations of weedy U.S. chicory have evolved primarily from several sources of domesticated and weedy ancestors and subsequent admixture among escaped lineages.

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Distinction between cultivated and wild chicory gene pools using AFLP markers

Cited by 29 publications

References 15 publications

Genetic variation among wild and cultivatedAgropyron desertorumpopulations based on total protein profiles and phenotypic traits

Genetic variation among wild and cultivatedAgropyron desertorumpopulations based on total protein profiles and phenotypic traits

Spontaneous gene flow and population structure in wild and cultivated chicory, Cichorium intybus L.

Population structure in chicory (Cichorium intybus): A successful U.S. weed since the American revolutionary war

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