Pollen‐mediated Gene Flow in <i>Camelina sativa</i> (L.) Crantz

Walsh, Kimberly D.; Hills, Matthew J.; Martin, Sara L.; Hall, Linda M.

doi:10.2135/cropsci2014.03.0194

Cited by 18 publications

(14 citation statements)

References 25 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Camelina sativa (camelina) is mainly self-pollinating, with outcrossing rates of less than 1% ( Walsh et al, 2006 ; Walsh et al, 2015 ). In the study, we used a local landrace that was not a fixed variety.…”

Section: Methodsmentioning

confidence: 99%

Rapid transgenerational adaptation in response to intercropping reduces competition

Stefan

Engbersen

Schöb

2022

eLife

View full text Add to dashboard Cite

By capitalising on positive biodiversity-productivity relationships, intercropping provides opportunities to improve agricultural sustainability. Intercropping is generally implemented using commercial seeds that were bred for maximal productivity in monocultures, thereby ignoring the ability of plants to adapt over generations to the surrounding neighbourhood, notably through increased complementarity, i.e. reduced competition or increased facilitation. This is why using monoculture-adapted seeds for intercropping might limit the benefits of crop diversity on yield. However, the adaptation potential of crops and the corresponding changes in complementarity have not been explored in annual crop systems. Here we show that plant-plant interactions among annual crops shifted towards reduced competition and/or increased facilitation when the plants were growing in the same community type as their parents did in the previous two generations. Total yield did not respond to this common coexistence history, but in fertilized conditions, we observed increased overyielding in mixtures with a common coexistence history. Surprisingly, we observed character convergence between species sharing the same coexistence history for two generations, in monocultures but also in mixtures: the six crop species tested converged towards taller phenotypes with lower leaf dry matter content. This study provides the first empirical evidence for the potential of parental diversity affecting plant-plant interactions, species complementarity and therefore potentially ecosystem functioning of the following generations in annual cropping systems. Although further studies are required to assess the context-dependence of these results, our findings may still have important implications for diversified agriculture as they illustrate the potential of targeted cultivars to increase complementarity of species in intercropping, which could be achieved through specific breeding for mixtures.

show abstract

Section: Methodsmentioning

confidence: 99%

Rapid transgenerational adaptation in response to intercropping reduces competition

Stefan

Engbersen

Schöb

2022

eLife

View full text Add to dashboard Cite

show abstract

“…All results were compared to an alpha value of 0.05. Previous research suggests the relationship between Amaranthus tuberculatus pollen dispersal and distance follows an exponential decay pattern (Liu et al, 2012;Sarangi et al, 2017), and this pattern also has been observed in other wind-pollinated herbaceous species (Walsh et al, 2015;Dong et al, 2016;Chang et al, 2018). Although pollen dispersal has not been examined in Solanum lycopersicum, Beckie and Hall (2008) observed that studies modeling the effect of distance from the pollen donor on pollen dispersal in crop plants (e.g., maize, wheat) generally fit exponential decay or inverse power curves to the relationship.…”

Section: Statistical Analysesmentioning

confidence: 82%

Pollen dispersal patterns differ among sites for a wind‐pollinated species and an insect‐pollinated species

Butcher

Rubin

Anderson

2020

American J of Botany

View full text Add to dashboard Cite

Premise Pollen dispersal, the main component of overall plant gene flow, generally decreases with increasing distance from the pollen source, but the pattern of this relationship may differ among sites. Although site‐based differences in pollen dispersal may lead to over‐ or underestimation of gene flow, no studies have investigated pollen dispersal patterns among differing urban site types, despite the incongruent range of habitats in urban areas. Methods We used paternity assignment to assess pollen dispersal patterns in a wind‐pollinated species (waterhemp; Amaranthus tuberculatus) and in an insect‐pollinated species (tomato; Solanum lycopersicum) in experimental arrays at four disparate sites (two roof‐level sites, two ground‐level sites) in the New York (New York, USA) metropolitan area. Results The number of seeds or fruits, a proxy for the number of flowers pollinated, decreased with increasing distance from the pollen donors at all sites for both species. However, the mean number of Amaranthus tuberculatusseeds produced at a given distance differed two‐fold among sites, while the slope of the relationship between Solanum lycopersicumfruit production and distance differed by a factor of four among sites. Conclusions Pollen dispersal patterns may differ substantially among sites, both in the amount of pollen dispersed at a given distance and in the proportional decrease in pollen dispersal with increasing distance, and these effects may act independently. Accordingly, the capacity of plant species to adapt to climate change and other selection pressures may be different from predictions based on pollen dispersal patterns at a single location.

show abstract

“…Field experiments were conducted using a modified Nelder wheel design 17 , 78 , 79 with the pollen source (GR giant ragweed) planted in the center and the pollen receptors (GS giant ragweed) planted around the center. The experimental area was 80 m × 80 m with a central circle of 80 sq m (10 m diameter) for the pollen-donor block (Fig.…”

Section: Methodsmentioning

confidence: 99%

Modeling pollen-mediated gene flow from glyphosate-resistant to -susceptible giant ragweed (Ambrosia trifida L.) under field conditions

Ganie

Jhala

2017

Sci Rep

View full text Add to dashboard Cite

A field experiment was conducted to quantify pollen mediated gene flow (PMGF) from glyphosate-resistant (GR) to glyphosate-susceptible (GS) giant ragweed under simulated field conditions using glyphosate resistance as a selective marker. Field experiments were conducted in a concentric design with the GR giant ragweed pollen source planted in the center and GS giant ragweed pollen receptors surrounding the center in eight directional blocks at specified distances (between 0.1 and 35 m in cardinal and ordinal directions; and additional 50 m for ordinal directions). Seeds of GS giant ragweed were harvested from the pollen receptor blocks and a total of 100,938 giant ragweed plants were screened with glyphosate applied at 2,520 g ae ha−1 and 16,813 plants confirmed resistant. The frequency of PMGF was fit to a double exponential decay model selected by information-theoretic criteria. The highest frequency of gene flow (0.43 to 0.60) was observed at ≤0.5 m from the pollen source and reduced rapidly with increasing distances; however, gene flow (0.03 to 0.04) was detected up to 50 m. The correlation between PMGF and wind parameters was inconsistent in magnitude, direction, and years.

show abstract

Pollen‐mediated Gene Flow in Camelina sativa (L.) Crantz

Cited by 18 publications

References 25 publications

Rapid transgenerational adaptation in response to intercropping reduces competition

Rapid transgenerational adaptation in response to intercropping reduces competition

Pollen dispersal patterns differ among sites for a wind‐pollinated species and an insect‐pollinated species

Modeling pollen-mediated gene flow from glyphosate-resistant to -susceptible giant ragweed (Ambrosia trifida L.) under field conditions

Contact Info

Product

Resources

About