T.-L. Ashman

Neopolyploidy-induced changes in the giant duckweed (Spirodela polyrhiza) alter herbivore preference, performance, and plant population performance

This study shows that neopolyploidy in duckweed affects aphid herbivore preference and performance, with outcomes dependent on plant genetic background.

Neopolyploidy increases stress tolerance and reduces fitness plasticity across multiple urban pollutants: support for the 'general purpose' genotype hypothesis.

This study shows that neopolyploidy in duckweed increases tolerance to urban pollutants and maintains fitness across diverse stresses, supporting the 'general purpose' genotype hypothesis.

Plant neopolyploidy and genetic background differentiates the microbiome of duckweed across a variety of natural freshwater sources

This study shows that polyploidy in Spirodela polyrhiza increases bacterial microbiome diversity and alters composition, with effects dependent on genetic background and environmental context.

Polyploidy impacts population growth and competition with diploids: multigenerational experiments reveal key life history tradeoffs

The paper conducts multigenerational experiments on polyploids and diploids of Spirodela polyrhiza, finding that polyploids have lower population sizes and carrying capacities but produce more dormant propagules.

Pollinators mediate floral microbial diversity and network under agrochemical disturbance

The paper examines how pollinator visitation affects floral microbial diversity and networks under agrochemical disturbance in strawberries.

Pollinator niche partitioning and asymmetric facilitation contribute to the maintenance of diversity

The paper shows that niche partitioning and asymmetric facilitation in pollinator use help maintain diversity in a biodiversity hotspot by benefiting rare species.

Recipient and donor characteristics govern the hierarchical structure of heterospecific pollen competition networks

The paper investigates how recipient and donor traits influence pollen competition networks among plant species, finding hierarchical structures driven by trait matching and asymmetries.

Floral organs act as environmental filters and interact with pollinators to structure the yellow monkeyflower (Mimulus guttatus) floral microbiome.

The paper examines how pollinator interactions and floral organ environments shape the microbiome of Mimulus guttatus flowers, finding that pollinators influence microbial community assembly through dispersal and environmental selection.

Revisiting the Origin of the Octoploid Strawberry

The paper reanalyzes the origin of octoploid strawberries, finding two diploid progenitors instead of four, and identifies flaws in a previous phylogenetic approach.

The effect of alien species on plant-pollinator network structure across a gradient of plant species invasion

This study examines how alien plant species affect plant-pollinator network structure in coastal communities, finding no significant differences in network parameters or structure between native and alien species.

The effects of host species and sexual dimorphism differ among root, leaf and flower microbiomes of wild strawberries in situ

This study examines how host species and sexual dimorphism affect root, leaf, and flower microbiomes in wild strawberries, finding organ type has the strongest influence.

Both functional trait divergence and trait plasticity confer polyploid advantage in changing environments

The paper tests how functional trait divergence and plasticity contribute to polyploid fitness advantage in changing environments using wild strawberry species.

Repeated translocation of a gene cassette drives sex chromosome turnover in strawberries

The paper identifies a female-specific gene cassette that repeatedly translocates across chromosomes in strawberries, driving sex chromosome turnover through a 'move-lock-grow' mechanism.