Introgressive hybridization in<i>Rorippa</i>(Brassicaceae): gene flow and its consequences in natural and anthropogenic habitats

Bleeker, Walter; Hurka, Herbert

doi:10.1046/j.1365-294x.2001.01341.x

Cited by 81 publications

(65 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Switzerland, Cardamine insueta (Brassicaceae), originating from hybridization between C. rivularis and C. amara, especially invaded disturbed hay meadows (Urbanska et al 1997). In Germany, hybridization among species of Rorippa (Brassicaceae) occurs predominantly in man-made habitats such as drainage ditches (Bleeker and Hurka 2001). In addition to directly disrupting natural barriers, humans also increasingly transport species across them (e.g., Hodkinson and Thompson 1997;von der Lippe and Kowarik 2007;Wichmann et al 2009), resulting in problems of invasiveness that frequently involve hybridization between native and non-native (or genetically modified crop) species (Schierenbeck and Ellstrand 2009).…”

Section: Introductionmentioning

confidence: 99%

Human-induced hybridization among congeneric endemic plants on Tenerife, Canary Islands

et al. 2012

View full text Add to dashboard Cite

Endemic genera on oceanic islands often evolved striking morphological and ecological differences among species, with weak postzygotic reproductive isolation. Human activities can lead to increased connectivity and can thereby promote secondary contact and hybridization between previously isolated species. We studied this phenomenon in three species of the genus Pericallis (Asteraceae) on Tenerife, Canary Islands. A total of 53 populations was sampled, including morphologically uniform as well as mixed populations containing morphologically diverse individuals. All plants were analyzed both genetically using AFLP markers and morphometrically. As expected, morphological analysis clearly separated the plants from the uniform populations in three clusters, with distinguishing characters corresponding to those used in species identification. The three species were also grouped into distinct genetic clusters in a STRUCTURE analysis, although no private alleles were observed. Adding the mixed population data to the analyses provided evidence for extensive hybridization among species, predominantly between P. cruenta and P. echinata, and between P. cruenta and P. tussilaginis, and morphological and genetic signals were congruent. The mixed populations were geographically located in between the uniform populations and were found in road verges significantly more often than the uniform populations. The observed distribution strongly suggests that hybridization between originally isolated species is recent, promoted by secondary contact due to human disturbance and the construction of roads.

show abstract

Section: Introductionmentioning

confidence: 99%

Human-induced hybridization among congeneric endemic plants on Tenerife, Canary Islands

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Previous work has shown that naturalization is affected by the frequency of and time since introduction (Scott & Panetta 1993;Kowarik 1995;Wu, Chaw & Rejmánek 2003; Py ß ek & Jaro ß ik 2005), successful reproduction in small populations (Liebhold & Bascompte 2003;van Kleunen & Johnson 2005), hybridization with, and introgression of genes from, other species (Bleeker & Hurka 2001;Hurka, Bleeker & Neuffer 2003), global change (Dukes & Mooney 1999), anthropogenic disturbances (Byers 2002) and interactions of species with their new environments (Richardson et al . 2000b;Heger & Trepl 2003).…”

Section: Introductionmentioning

confidence: 99%

Predicting naturalization of southern African Iridaceae in other regions

Kleunen

Johnson

Fischer

2007

Journal of Applied Ecology

View full text Add to dashboard Cite

Summary 1.One of the major challenges in invasion biology is to predict the likelihood of naturalization, and ultimately invasiveness, of species from properties that can be assessed in the native range prior to a species' introduction elsewhere. This is particularly relevant as intentional introduction for horticultural usage has been predicted to be the over-riding factor associated with naturalization. 2. We compiled a data set on 1036 species of Iridaceae native to southern Africa to test whether traits differ between horticulturally used and unused species, whether the likelihood of naturalization elsewhere is higher for horticulturally used species, and whether it differs according to species' taxonomic affinities, geographical range size, altitudinal range, number of subtaxa and plant size. 3. Our results show that at least 306 southern African Iridaceae species are used in horticulture elsewhere. Of the 67 that have become naturalized elsewhere, no less than 62 are in horticulture, indicating horticultural trade as the main source of naturalized Iridaceae. 4. Global horticultural usage differs among the three subfamilies and among the genera. In addition, horticultural usage is more likely for species with a larger distributional range, a lower maximum altitude, more subtaxa and a taller height. This indicates that species introduced elsewhere for horticultural usage have a biased set of biogeographical and biological characteristics that should be corrected for in analyses of naturalization. 5. After correction for horticultural usage, naturalization differs between genera, and is more likely for species with lower maximum altitude, species with higher numbers of subtaxa and taller species. 6. Cross-validation of our predictive logistic regression model revealed a low kappa (0·279 ± 0·069, mean ± SE) that was significantly different from zero. This indicates that the estimates from our logistic regression model can be used to predict naturalization of Iridaceae but that the accuracy is relatively low. 7. Synthesis and applications . Our study shows that screening protocols for potential invasiveness of species of Iridaceae should include international horticultural usage, and taxonomic, biogeographical and biological characteristics in the native range, as predictors. Moreover, for the development of more accurate predictive models, experimental assessment of other plant characteristics associated with naturalization is still required.

show abstract

“…Among Arabidopsis wild relatives, the genus Rorippa (yellow cress) includes the polyploid, hybridizing species Rorippa amphibia and Rorippa sylvestris, which inhabit periodically flooded river banks throughout Europe (Bleeker and Hurka, 2001;Stift et al, 2008). We have recently shown different morphological responses to submergence in R. amphibia and R. sylvestris (Stift et al, 2008;Akman et al, 2012).…”

mentioning

confidence: 99%

Root Transcript Profiling of Two Rorippa Species Reveals Gene Clusters Associated with Extreme Submergence Tolerance

et al. 2013

View full text Add to dashboard Cite

Complete submergence represses photosynthesis and aerobic respiration, causing rapid mortality in most terrestrial plants. However, some plants have evolved traits allowing them to survive prolonged flooding, such as species of the genus Rorippa, close relatives of Arabidopsis (Arabidopsis thaliana). We studied plant survival, changes in carbohydrate and metabolite concentrations, and transcriptome responses to submergence of two species, Rorippa sylvestris and Rorippa amphibia. We exploited the close relationship between Rorippa species and the model species Arabidopsis by using Arabidopsis GeneChip microarrays for whole-genome transcript profiling of roots of young plants exposed to a 24-h submergence treatment or air. A probe mask was used based on hybridization of genomic DNA of both species to the arrays, so that weak probe signals due to Rorippa species/Arabidopsis mismatches were removed. Furthermore, we compared Rorippa species microarray results with those obtained for roots of submerged Arabidopsis plants. Both Rorippa species could tolerate deep submergence, with R. sylvestris surviving much longer than R. amphibia. Submergence resulted in the induction of genes involved in glycolysis and fermentation and the repression of many energy-consuming pathways, similar to the low-oxygen and submergence response of Arabidopsis and rice (Oryza sativa). The qualitative responses of both Rorippa species to submergence appeared roughly similar but differed quantitatively. Notably, glycolysis and fermentation genes and a gene encoding sucrose synthase were more strongly induced in the less tolerant R. amphibia than in R. sylvestris. A comparison with Arabidopsis microarray studies on submerged roots revealed some interesting differences and potential tolerance-related genes in Rorippa species.

show abstract

Introgressive hybridization inRorippa(Brassicaceae): gene flow and its consequences in natural and anthropogenic habitats

Cited by 81 publications

References 31 publications

Human-induced hybridization among congeneric endemic plants on Tenerife, Canary Islands

Human-induced hybridization among congeneric endemic plants on Tenerife, Canary Islands

Predicting naturalization of southern African Iridaceae in other regions

Root Transcript Profiling of Two Rorippa Species Reveals Gene Clusters Associated with Extreme Submergence Tolerance

Contact Info

Product

Resources

About