Clonal diversity in a Rhododendron ferrugineum L. (Ericaceae) population inferred from AFLP markers

Escaravage, Nathalie; Questiau, Sophie; Pornon, André; Doche, B.; Taberlet, Pierre

doi:10.1046/j.1365-294x.1998.00415.x

Cited by 132 publications

(104 citation statements)

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“…The pattern of spatial distribution of genetic and clonal diversities and their respective evolution in time will therefore be highly dependent on the balance between these two strategies. Numerous spatial studies have been carried out for diverse species, reporting highly variable levels of clonal richness that suggest a differential intensity between ISR and RSR strategies (Escaravage et al, 1998;Coyer et al, 2004;Olsen et al, 2004;Pluess and Stocklin, 2004;Diaz-Almela et al, 2007;Alberto et al, 2008). The extreme and most demonstrative cases of ISR dominance are the monoclonal meadows of some seagrass species, including Z. marina (Reusch et al, 1999;Olsen et al, 2004), C. nodosa (Alberto et al, 2008) or P. oceanica (Arnaud-Haond et al, 2007b.…”

Section: Introductionmentioning

confidence: 99%

Scaling of processes shaping the clonal dynamics and genetic mosaic of seagrasses through temporal genetic monitoring

et al. 2013

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Theoretically, the dynamics of clonal and genetic diversities of clonal plant populations are strongly influenced by the competition among clones and rate of seedling recruitment, but little empirical assessment has been made of such dynamics through temporal genetic surveys. We aimed to quantify 3 years of evolution in the clonal and genetic composition of Zostera marina meadows, comparing parameters describing clonal architecture and genetic diversity at nine microsatellite markers. Variations in clonal structure revealed a decrease in the evenness of ramet distribution among genets. This illustrates the increasing dominance of some clonal lineages (multilocus lineages, MLLs) in populations. Despite the persistence of these MLLs over time, genetic differentiation was much stronger in time than in space, at the local scale. Contrastingly with the short-term evolution of clonal architecture, the patterns of genetic structure and genetic diversity sensu stricto (that is, heterozygosity and allelic richness) were stable in time. These results suggest the coexistence of (i) a fine grained (at the scale of a 20 Â 30 m quadrat) stable core of persistent genets originating from an initial seedling recruitment and developing spatial dominance through clonal elongation; and (ii) a local (at the scale of the meadow) pool of transient genets subjected to annual turnover. This simultaneous occurrence of initial and repeated recruitment strategies highlights the different spatial scales at which distinct evolutionary drivers and mating systems (clonal competition, clonal growth, propagule dispersal and so on) operate to shape the dynamics of populations and the evolution of polymorphism in space and time. Keywords: clonality; seagrass; spatio-temporal genetic structure; Zostera marina INTRODUCTION Clonality is a life history trait widely distributed among taxa and habitats, particularly in photosynthetic organisms. Partially clonal organisms are characterized by a mixed system allowing the combination of two reproductive strategies: the production of new genetically identical modules through vegetative growth or fragmentation and the production of new genetic individuals through sexual recombination. As a consequence, their population dynamics and evolutionary trajectories are profoundly affected by their rate and mode of clonal reproduction. Populations of clonal plants are composed of genetic individuals, or genets occupying space and dispersing locally through the production of modular shoots, or ramets (Harper, 1977). As genets are able to persist through time and space, the composition and evolution of populations of clonal plants is largely affected by the level of intraspecific competition (Eriksson, 1989(Eriksson, , 1993Pan and Price, 2001;Travis and Hester, 2005).Depending on the turnover of genets and intensity of inter-genet competition for space, two extreme recruitment strategies have been defined (Eriksson, 1993): (i) the 'Initial Seedling Recruitment' (ISR) strategy, characterizing populations originating fro...

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Section: Introductionmentioning

confidence: 99%

Scaling of processes shaping the clonal dynamics and genetic mosaic of seagrasses through temporal genetic monitoring

et al. 2013

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“…In this study, wild wasabi was not investigated because it is very difficult to predict a "true" wild population of wasabi. Young leaves were harvested from an arbitrarily chosen individual plant grown in a greenhouse, and total DNA was extracted from the leaves by the CTAB method, as described by Escaravage et al (1998), with some modifications. Voucher specimens were deposited at the herbarium of Gifu University.…”

Section: Plant Materialsmentioning

confidence: 99%

Genetic Differentiation, Molecular Phylogenetic Analysis, and Ethnobotanical Study of Eutrema japonicum and E. tenue in Japan and E. yunnanense in China

Yamane

Sugiyama

et al. 2016

Hortic J

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This paper reports the level of genetic differentiation between two Japanese and one Chinese species of Eutrema: E. japonicum, "wasabi"; its wild relative in Japan, E. tenue; and their wild relative in China, E. yunnanense. Phylogenetic analyses were based on the DNA sequence of the chloroplast trnK/matK region of 16 Brassicaceae and an outgroup species. Neighbor joining (NJ) and maximum parsimony (MP) trees were constructed, revealing that the three Eutrema species form a single clade clearly separated from other Brassicaceae species. The two Japanese Eutrema species are highly differentiated from Chinese E. yunnanense, and it is estimated that they diverged from E. yunnanense approximately 5 million years ago. An ethnobotanical survey was conducted among ethnic Chinese in Yunnan Province, and the results indicate that E. yunnanense is not perceived as "hot" in taste, while a pungent flavor is associated with wasabi; in addition, no evidence was found for the domestication of E. yunnanense. On the basis of the present molecular phylogenetic study and the ethnobotanical survey, we conclude that wasabi acquired its specific pungent flavor during its long botanical history in Japan, and that its subsequent domestication in Japan was because of this acquired pungent flavor. The culinary habit of using wasabi with raw fish has since become an important feature of Japanese cuisine and culture.

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“…Total DNA was extracted from the bulk of young leaves from two to five plants for each accession by the CTAB method (Escaravage et al 1998). The extracted DNA was stored in 100 μL of TE buffer at 4°C.…”

Section: Dna Extraction Pcr Amplification and Sequencingmentioning

confidence: 99%

Genetic variation in domesticated emmer wheat (Triticum turgidum L.) in and around Abyssinian Highlands

2010

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Because of the huge morphological variations exhibited there, the Abyssinian Highlands (Ethiopia) are thought of as the secondary center of diversity of domesticated emmer wheat (Triticum turgidum L.). The genetic diversity in 88 domesticated emmer wheat accessions from Ethiopia and other regions was analyzed using DNA sequences of parts of four genes, Acc1-A, Pgk1-B, Waxy-A and Waxy-B, which are single-copy genes in nuclear DNA. The multilocus genotypes determined by analysis using Structure enabled the 88 accessions to be divided into four clusters. Each cluster included both hulled and free-threshing subspecies, and there was no clustering corresponding to specific subspecies. Both hulled and free-threshing emmer landraces in Ethiopia had several characteristic alleles, and the gene flow between them was shown to be limited. The genetic composition of Ethiopian landraces differed from that of emmer in other regions of the world. However, their nucleotide diversity was not as high as that of other emmer populations. The large morphological diversity in Ethiopian emmer landraces must have evolved from a limited genetic background.

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Clonal diversity in a Rhododendron ferrugineum L. (Ericaceae) population inferred from AFLP markers

Cited by 132 publications

References 38 publications

Scaling of processes shaping the clonal dynamics and genetic mosaic of seagrasses through temporal genetic monitoring

Scaling of processes shaping the clonal dynamics and genetic mosaic of seagrasses through temporal genetic monitoring

Genetic Differentiation, Molecular Phylogenetic Analysis, and Ethnobotanical Study of <i>Eutrema japonicum</i> and <i>E. tenue</i> in Japan and <i>E. yunnanense</i> in China

Genetic variation in domesticated emmer wheat (Triticum turgidum L.) in and around Abyssinian Highlands

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