A5072419495- Plant and animal studies
- Genetic diversity and population structure
- Plant Reproductive Biology
- Genetic Mapping and Diversity in Plants and Animals
- Genomics and Phylogenetic Studies
- Insect and Arachnid Ecology and Behavior
- Ecology and Vegetation Dynamics Studies
- Chromosomal and Genetic Variations
- Animal Behavior and Reproduction
- Species Distribution and Climate Change
- Plant Molecular Biology Research
- Evolution and Genetic Dynamics
- Plant Diversity and Evolution
- Plant Parasitism and Resistance
- Genetic and Environmental Crop Studies
- Plant Virus Research Studies
- Plant and Fungal Species Descriptions
- Plant Pathogens and Resistance
- Physiological and biochemical adaptations
- Insect behavior and control techniques
- Rangeland and Wildlife Management
- Postharvest Quality and Shelf Life Management
- Wildlife Ecology and Conservation
- Plant Physiology and Cultivation Studies
- Plant Pathogens and Fungal Diseases
Indiana University Bloomington
2016-2025
Indiana University
2005-2024
ORCID
2022
Oxford University Press (United Kingdom)
2021
American Institute of Biological Sciences
2021
University of California, Davis
2004-2006
University of California System
2005
Duke University
2000-2004
“Speciation” was largely “speculation” two decades ago, at least with respect to a detailed and comprehensive mechanistic understanding of the origin new species. Despite elegant classical work examining genetic basis interspecific differences reproductive isolation complementary studies ecological factors that can contribute species divergence, speciation researchers lacked tools dissect specific forces, traits, genes involved. Thanks recent advances in molecular biology genomic sequencing,...
Speciation events often occur in rapid bursts of diversification, but the ecological and genetic factors that promote these radiations are still much debated. Using whole transcriptomes from all 13 species ecologically reproductively diverse wild tomato clade (Solanum sect. Lycopersicon), we infer phylogeny patterns diversity this group. Despite widespread phylogenetic discordance due to sorting ancestral variation, date origin radiation approximately 2.5 million years ago find evidence for...
Asymmetric postmating isolation, where reciprocal interspecific crosses produce different levels of fertilization success or hybrid sterility/inviability, is very common. Darwin emphasized its pervasiveness in plants, but it occurs all taxa assayed. This asymmetry often results from Dobzhansky-Muller incompatibilities (DMIs) involving uniparentally inherited genetic factors (e.g., gametophyte-sporophyte interactions plants cytoplasmic-nuclear interactions). Typically, unidirectional (U) DMIs...
Understanding the role of geography and ecology in species divergence is central to study evolutionary diversification. We used climatic, geographic, biological data from nine wild Andean tomato describe each species' ecological niche evaluate likely geographical modes speciation this clade. Using >1000 accessions publicly available derived geographic information systems for various environmental variables, we found most pairs were significantly differentiated one or more variables. By...
Over 100 years of studies in Drosophila melanogaster and related species the genus have facilitated key discoveries genetics, genomics, evolution. While high-quality genome assemblies exist for several this group, they only encompass a small fraction genus. Recent advances long-read sequencing allow tens or even hundreds to be efficiently generated. Here, we utilize Oxford Nanopore build an open community resource 101 lines 93 drosophilid encompassing 14 groups 35 sub-groups. The genomes are...
Patterns of reproductive isolation between species may provide insight into the mechanisms and evolution barriers to interspecific gene exchange. We used data from published hybridization experiments 14 genera angiosperms in order test for presence asymmetrical Reproductive was examined at three life–history stages: ability crosses produce seeds, viability F1 hybrids, fertility hybrids. Statistically significant asymmetries strength were detected all each stages. Asymmetries seed production...
Abstract Analyses among animal species have found that reproductive isolation increases monotonically with genetic distance, evolves more quickly for prezygotic than postzygotic traits, and is stronger sympatric allopatric pairs. The latter pattern consistent expectations under the reinforcement hypothesis. To determine whether similar trends are plant species, patterns of (postpollination prezygotic, postzygotic, "total" isolation) in three genera (Glycine, Silene, Streptanthus) were...
Among the reproductive barriers that can isolate species, hybrid sterility is frequently due to dysfunctional interactions between loci accumulate differentiating lineages. Theory describing evolution of these incompatibilities has generated prediction, still empirically untested, underlying incompatibility should faster than linearly with time--the "snowball effect." We evaluated accumulation quantitative trait (QTL) species in plant group Solanum and found evidence for a faster-than-linear...
Using the results of a survey recovery plans for threatened and endangered species, we evaluated role that Population Viability Analysis (PVA) has played in planning management rare species United States. Although there was significant increase over time percentage presenting information on PVA assigning tasks to collect more such information, use still called less than half approved since 1991. Because scarcity data may be limiting application also assessed how often proposed full...
Journal Article ECOLOGICAL AND EVOLUTIONARY GENOMICS IN THE WILD TOMATOES (SOLANUM SECT. LYCOPERSICON) Get access Leonie C. Moyle Department of Biology, Indiana University, Bloomington, 474051 E-mail: lmoyle@indiana.edu Search for other works by this author on: Oxford Academic Google Scholar Evolution, Volume 62, Issue 12, 1 December 2008, Pages 2995–3013, https://doi.org/10.1111/j.1558-5646.2008.00487.x Published: 01 2008 history Received: 11 March Accepted: 16 April
The cuticle covers the aerial epidermis of land plants and plays a primary role in water regulation protection from external stresses. Remarkable species diversity structure composition its components, cutin wax, have been catalogued, but few functional or genetic correlations emerged. Tomato (Solanum lycopersicum) is part complex closely related wild endemic to northern Andes Galapagos Islands Sect. Lycopersicon). Although sharing an ancestor <7 million years ago, these are found diverse...
Environmental variation is widely viewed as a major force driving morphological change and speciation. Although many environmental attributes are potentially critical for adaptive responses within between species, the individual relative importance of these diverse remain poorly understood. Here we combine geographical information systems (GIS)-based analysis with multipopulation phenotypic, physiological, genetic variation, to generate test hypotheses factors likely divergence two wild...
Abstract Natural selection on photosynthetic performance is a primary factor determining leaf phenotypes. The complex CO 2 diffusion path from substomatal cavities to the chloroplasts – mesophyll conductance ( g m ) limits rate in many species and hence shapes variation morphology anatomy. Among sclerophyllous succulent taxa, structural investment leaves, measured as dry mass per area LMA ), has been implicated decreased . However, herbaceous taxa with high , it less certain how impacts...
Abstract Phylogenetic analyses of trait evolution can provide insight into the evolutionary processes that initiate and drive phenotypic diversification. However, recent phylogenomic studies have revealed extensive gene tree–species tree discordance, which lead to incorrect inferences if only a single species is used for analysis. This phenomenon—dubbed “hemiplasy”—is particularly important consider during character in rapidly radiating groups, where discordance widespread. Here, we generate...
An increasing number of phylogenomic studies have documented a clear "footprint" postspeciation introgression among closely related species. Nonetheless, systematic genome-wide factors that determine the likelihood remain rare. Here, we propose an priori hypothesis-testing framework uses statistics-including new metric estimated introgression, Dp-to evaluate general patterns prevalence and direction across multiple We demonstrate this approach using whole genome sequences from 32 lineages in...
Abstract Speciation research—the scientific field focused on understanding the origin and diversity of species—has a long complex history. While relevant to one another, specific goals activities speciation researchers are highly diverse, scattered across collection different perspectives. Thus, our will benefit from efforts bridge findings diverse people who do work. In this paper, we outline two ways integrating research: (i) integration, through bringing together ideas, data, approaches;...
Abstract We examined the genetics of hybrid incompatibility between two closely related diploid hermaphroditic plant species. Using a set near-isogenic lines (NILs) representing 85% genome wild species Lycopersicon hirsutum (Solanum habrochaites) in genetic background cultivated tomato L. esculentum (S. lycopersicum), we found that pollen and seed infertility are each based on 5–11 QTL individually reduce fitness by 36–90%. Seed act additively or recessively, consistent with findings other...
The genetic basis of hybrid sterility can provide insight into the and evolutionary origins species barriers. We examine genetics incompatibility between two diploid plant in clade Solanum sect. Lycopersicon. Using a set near-isogenic lines (NILs) representing wild pennellii (formerly Lycopersicon pennellii) background cultivated tomato S. lycopersicum L. esculentum), we found that pollen seed infertility are each based on modest number loci, male (pollen) other (seed) factors roughly...
Abstract Adaptive evolution requires both raw genetic material and an accessible path of high fitness from one peak to another. In this study, we used introgression line (IL) population map quantitative trait loci (QTL) for leaf traits thought be associated with adaptation precipitation in wild tomatoes (Solanum sect. Lycopersicon; Solanaceae). A QTL sign test showed that several likely evolved under directional natural selection. Leaf correlated across species do not share a common basis,...
Species barriers, expressed as hybrid inviability and sterility, are often due to epistatic interactions between divergent loci from two lineages. Theoretical models indicate that the strength, direction, complexity of these genetic can strongly affect expression interspecific reproductive isolation rates at which new species evolve. Nonetheless, empirical analyses have not quantified frequency with involved in affecting fitness, whether predominantly interact synergistically or...
Abstract The wild currant tomato Solanum pimpinellifolium inhabits a wide range of abiotic habitats across its native Ecuador and Peru. Although it has served as key genetic resource for the improvement domestic cultivars, little is known about basis traits underlying local adaptation in this species, nor what variables are most important driving differentiation. Here we use redundancy analysis (RDA) other multivariate statistical methods (structural equation modelling [SEM] generalized...
The two "rules of speciation"—the Large X‐effect and Haldane's rule—hold throughout the animal kingdom, but underlying genetic mechanisms that cause them are still unclear. Two predominant explanations—the "dominance theory" faster male evolution—both have some empirical support, suggesting basis these rules is likely multifarious. We revisit one historical explanation for rules, based on dysfunctional interactions involving genes recently moved between chromosomes. suggest gene movement...
We examined reproductive isolating barriers at four postmating stages among 11 species from the morphologically diverse genus Nolana (Solanaceae). At least one stage was positively correlated with both genetic and geographic distance between species. Postzygotic isolation generally stronger faster evolving than prezygotic isolation. In addition, there no evidence for mechanical isolation, or character displacement in floral traits that can influence pollinator general, potential here,...