Untersuchungen an dem Antirrhinum-Wildsippen-Sortiment von E. Baur

Hackbarth, J.; Michaelis, Peter; Scheller, G.

doi:10.1007/bf01741978

Cited by 7 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4D). Much of the variation in flower color was captured within the 3D genotypic space, consistent with previous studies showing that the ROS, EL, and SULF loci play important roles in color variation in the species group as a whole (11)(12)(13) (Fig. 4E).…”

supporting

confidence: 86%

“…An increase in the number of herbivore species by either of these mechanisms should support more predator species (9). Recent studies have shown that population genotypic diversity, like plant species diversity, can have extended consequences for communities and ecosystems (10)(11)(12)(13)(14). However, no studies to date have explicitly linked intraspecific genotypic diversity, the structure of associated communities, and the potential mechanisms driving these patterns, such as energy availability.…”

mentioning

confidence: 96%

“…Previous studies on nine species from the Antirrhinum group identified several major loci involved in natural flower color variation (11)(12)(13). These include the linked ROSEA (ROS) and ELUTA (EL) loci, affecting the intensity and pattern of magenta anthocyanin pigment, and SULFUREA (SULF), affecting the distribution of yellow aurone pigment.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Evolutionary Paths Underlying Flower Color Variation inAntirrhinum

Whibley

Langlade

Andalo

et al. 2006

Science

149

174

View full text Add to dashboard Cite

To understand evolutionary paths connecting diverse biological forms, we defined a three-dimensional genotypic space separating two flower color morphs of Antirrhinum. A hybrid zone between morphs showed a steep cline specifically at genes controlling flower color differences, indicating that these loci are under selection. Antirrhinum species with diverse floral phenotypes formed a U-shaped cloud within the genotypic space. We propose that this cloud defines an evolutionary path that allows flower color to evolve while circumventing less-adaptive regions. Hybridization between morphs located in different arms of the U-shaped path yields low-fitness genotypes, accounting for the observed steep clines at hybrid zones.

show abstract

supporting

confidence: 86%

mentioning

confidence: 96%

See 1 more Smart Citation

Evolutionary Paths Underlying Flower Color Variation inAntirrhinum

Whibley

Langlade

Andalo

et al. 2006

Science

149

174

View full text Add to dashboard Cite

show abstract

“…Hybrids may frequently exhibit a low reproductive capacity as a result of pollen sterility or an inability to produce seeds (Rieseberg & Carney, ; Cruzan & Arnold, ). In the present study, hybrids were viable and fertile, which is consistent with the high reproductive capacity found in other artificial and natural Antirrhinum hybrids (Baur, ; Hackbarth et al ., ; Rothmaler, ; Rieger, ; Stubbe, ; Mateu‐Andrés & Boscaiu, ). Therefore, a low reproductive isolation was found at this stage of the plant life cycle.…”

Section: Discussionmentioning

confidence: 99%

The effectiveness of pre- and post-zygotic barriers in avoiding hybridization between two snapdragons (Antirrhinum L.: Plantaginaceae)

Carrió

Güemes

2014

Bot J Linn Soc

View full text Add to dashboard Cite

Reproductive barriers play an important role in the maintenance of species boundaries. However, to date, few studies have provided a detailed analysis of reproductive isolation barriers between species or examined their importance in maintaining species identity. This is the first detailed study into pre-and post-zygotic reproductive isolation barriers in Antirrhinum, based on a mixed population with two species that rarely co-occur. The study revealed that pollinator constancy and preference and poor hybrid seed viability were the most important reproductive isolating mechanisms. Reproductive isolation was practically complete by both pre-and post-zygotic barriers. Average pre-zygotic isolation was greater than post-zygotic isolation, in accordance with the trend observed in flowering plants in which reproductive isolation is principally caused by pre-zygotic mechanisms. However, average post-zygotic isolation was also high, in contrast to what was expected among Antirrhinum spp. This case highlights the importance of quantifying the reproductive isolation barriers thoroughly to understand how and why species boundaries are maintained.

show abstract

“…Although morphologically diverse and adapted to different, often extreme, environments, all Antirrhinum species can form fertile hybrids with each other and with A. majus when artificially cross-pollinated. Such hybrids have identified genes underlying differences in morphology and flower colour between their parents (Hackbarth et al, 1942;Langlade et al, 2005;Schwinn et al, 2006;Feng et al, 2009). Natural Antirrhinum hybrids have also identified genes involved in flower colour variation, and have suggested how selection acts on them (Whibley et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The evolutionary history of Antirrhinum suggests that ancestral phenotype combinations survived repeated hybridizations

Wilson

Hudson²

2011

The Plant Journal

View full text Add to dashboard Cite

SUMMARYThe model species Antirrhinum majus (the garden snapdragon) has over 20 close wild relatives that are morphologically diverse and adapted to different Mediterranean environments. Hybrids between Antirrhinum species have been used successfully to identify genes underlying their phenotypic differences, and to infer how selection acts on them. To better understand the genetic basis for this diversity, we have examined the evolutionary relationships between Antirrhinum species and how these relate to geography and patterns of phenotypic variation in the genus as a whole. Large population samples and both plastid and multilocus nuclear genotypes resolved the relationships between many species and provided some support for the traditional taxonomic division of the genus into morphological subsections. Morphometric analysis of plants grown in controlled conditions supported the phenotypic distinction of the two largest subsections, and the involvement of multiple underlying genes. Incongruence between nuclear and plastid genotypes further suggested that several species have arisen after hybridization between subsections, and that some species continue to hybridize. However, all potential hybrids appear to have retained a phenotype similar to one of their ancestors, suggesting that ancestral combinations of characters are maintained by selection at many different loci.

show abstract

Untersuchungen an dem Antirrhinum-Wildsippen-Sortiment von E. Baur

Cited by 7 publications

References 6 publications

Evolutionary Paths Underlying Flower Color Variation inAntirrhinum

Evolutionary Paths Underlying Flower Color Variation inAntirrhinum

The effectiveness of pre- and post-zygotic barriers in avoiding hybridization between two snapdragons (Antirrhinum L.: Plantaginaceae)

The evolutionary history of Antirrhinum suggests that ancestral phenotype combinations survived repeated hybridizations

Contact Info

Product

Resources

About