A5054238900- Plant and animal studies
- Plant Reproductive Biology
- Fern and Epiphyte Biology
- Plant Molecular Biology Research
- Genetic diversity and population structure
- Genetic Mapping and Diversity in Plants and Animals
- Plant Diversity and Evolution
- Plant Parasitism and Resistance
- Plant biochemistry and biosynthesis
- Plant Gene Expression Analysis
- Animal Ecology and Behavior Studies
- Yeasts and Rust Fungi Studies
- Plant Pathogens and Fungal Diseases
- Chromosomal and Genetic Variations
- Bioactive natural compounds
- Diatoms and Algae Research
- Mycorrhizal Fungi and Plant Interactions
- Genomics and Phylogenetic Studies
- Ecology and Vegetation Dynamics Studies
- Photosynthetic Processes and Mechanisms
- Plant Taxonomy and Phylogenetics
California State University, Sacramento
2021-2024
University of California, Santa Barbara
2013-2021
Monsanto (United States)
2013
University of Georgia
2011-2013
Indiana University Bloomington
2013
Drury University
2013
Harvard University
2011
The columbine genus Aquilegia is a classic example of an adaptive radiation, involving wide variety pollinators and habitats. Here we present the genome assembly A. coerulea 'Goldsmith', complemented by high-coverage sequencing data from 10 wild species covering world-wide distribution. Our analyses reveal extensive allele sharing among demonstrate that introgression selection played role in radiation. We also remarkable discovery evolutionary history entire chromosome differs rest -...
In order to maximize reproductive success, plants have evolved different strategies control the critical developmental shift marked by transition flowering. As adapted diverse environments across globe, these recognize and respond local seasonal cues through induction of specific downstream genetic pathways, thereby ensuring that floral occurs in favorable conditions. Determining factors involved controlling many species is key understanding how this trait has evolved. Striking discoveries...
Significance Throughout evolutionary history, organisms have evolved features that allow them to interact with their environment in novel ways. When such lead increased rates of speciation a lineage, we call key innovations. Understanding the genetic and developmental changes involved origin innovations is particular interest. Here identify gene, POPOVICH , crucial development innovation, floral nectar spurs, columbine genus Aquilegia . While function orthologs other plant taxa suggests an...
Interactions with animal pollinators have helped shape the stunning diversity of flower morphologies across angiosperms. A common evolutionary consequence these interactions is that some flowers converged on suites traits, or pollination syndromes, attract and reward specific pollinator groups. Determining genetic basis floral syndromes can help us understand processes contributed to diversification Here, we characterize architecture a bee-to-hummingbird shift in Aquilegia (columbine) using...
Petal nectar spurs, which facilitate pollination through animal attraction and pollen placement, represent a key innovation promoting diversification in the genus Aquilegia (Ranunculaceae). Identifying genetic components that contribute to development of these three-dimensional structures will inform our understanding number types changes are involved evolution novel traits. In prior study, gene expression between two regions developing petals, laminar blade spur cup, was compared at...
Flowering is a critical transition in plant development, the timing of which can have considerable fitness consequences. Until recently, research into genetic control flowering time and its associated developmental changes was focused on core eudicots (for example, Arabidopsis) or monocots Oryza). Here we examine response Aquilegia formosa, member eudicot order Ranunculales that emerging as an important model for investigation ecology evolution. We determined A. formosa has strong...
The formation of hybrids among closely related species has been observed in numerous plant taxa. Selection by pollinators on floral traits can act as an early reproductive isolating barrier and may be especially important when there is overlap distribution flowering time. In this study, we use Quantitative Trait Locus (QTL) mapping based 293 codominant SNP markers F2 population (n = 328) to assess the size, magnitude, location genetic regions controlling known for pollinator attraction 2...
The modification of fertile stamens into sterile staminodes has occurred independently many times in the flowering plant lineage. In genus Aquilegia (columbine) and its closest relatives, two stamen whorls to carpels have been converted staminodes. Aquilegia, only genetic analyses staminode development reverse approaches revealing that B-class floral identity genes are involved. A. jonesii, species columbine where reverted stamens, allows us explore architecture using a forward approach. We...
Abstract Background Hybridization among Louisiana Irises has been well established and the genetic architecture of reproductive isolation is known to affect potential for directionality introgression between taxa. Here we use co-dominant markers identify regions where QTL are located both within backcross maps compare fitness traits across treatments years. Results mapping was used elucidate Iris fulva brevicaulis . Homologous EST-SSR scored in two populations I. were generate linkage maps....
Abstract Premise Determining the developmental programs underlying morphological variation is key to elucidating evolutionary processes that generated stunning biodiversity of angiosperms. Here, we characterized and transcriptional dynamics elaborate petal nectar spur Aquilegia (columbine) in species with contrasting pollination syndromes morphologies. Methods We collected epidermal cell number length data across four species, two short, curved spurs bee‐pollination syndrome long, straight...
Abstract The columbine genus Aquilegia is a classic example of an adaptive radiation, involving wide variety pollinators and habitats. Here we present the genome assembly A. coerulea ‘Goldsmith’, complemented by high-coverage sequencing data from 10 wild species covering world-wide distribution. Our analyses reveal extensive allele sharing among demonstrate that introgression selection played role in radiation. We also remarkable discovery evolutionary history entire chromosome differs rest...
Background: Genomic analyses are being applied to ‘non-model’ species. These complexes now ‘models’ for applying genomic approaches test evolutionary hypotheses. have revealed the genetic underpinnings of natural selection and adaptation. Aims: We wish illustrate that newest techniques in genomics would not be possible without older technological methodological advances. also point necessity detailed phenotypic information reveal Methods: review studies starting with Watson Crick through...
Abstract The modification of fertile stamens into sterile staminodes has occurred independently many times in the flowering plant lineage. In genus Aquilegia (columbine) and its closest relatives, two stamen whorls to carpels have been converted staminodes. , only genetic analyses staminode development reverse approaches revealing that B-class floral identity genes are involved. A. jonesii species columbine where reverted stamens, allows us explore architecture using a forward approach. We...
Abstract Interactions with animal pollinators have helped shape the stunning diversity of flower morphologies across angiosperms. A common evolutionary consequence these interactions is that some flowers converged on suites traits, or pollination syndromes, attract and reward specific pollinator groups. Determining genetic basis floral syndromes can help us understand processes contributed to diversification Here, we characterize architecture a bee-to-hummingbird shift in Aquilegia...
Abstract Floral organs are produced by floral meristems (FMs), which harbor stem cells in their centers. Since each flower only has a finite number of organs, the cell activity an FM will always terminate at specific time point, process termed meristem termination (FMT). Variation timing FMT can give rise to morphological diversity, but how this is fine-tuned developmental and evolutionary level poorly understood. Flowers from genus Aquilegia share identical organ arrangement except for...
ABSTRACT Floral organs are produced by floral meristems (FMs), which harbor stem cells in their centers. Since each flower only has a finite number of organs, the cell activity FM will always terminate at specific time point, process termed meristem termination (FMT). Variation timing FMT can give rise to morphological diversity, but how this is fine-tuned developmental and evolutionary level poorly understood. Flowers from genus Aquilegia share identical organ arrangement except for stamen...