A5043313195- Soybean genetics and cultivation
- Legume Nitrogen Fixing Symbiosis
- Plant Diversity and Evolution
- Plant Pathogens and Resistance
- Plant and Fungal Species Descriptions
- Biochemical Analysis and Sensing Techniques
- Plant Taxonomy and Phylogenetics
- Identification and Quantification in Food
- Genomics and Phylogenetic Studies
- Wheat and Barley Genetics and Pathology
- Plant and animal studies
- Plant Disease Resistance and Genetics
- Cassava research and cyanide
- Remote Sensing in Agriculture
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Agronomic Practices and Intercropping Systems
- Botany, Ecology, and Taxonomy Studies
- Neural Networks and Applications
- Botanical Research and Applications
- Genetics and Plant Breeding
- Peanut Plant Research Studies
- Lichen and fungal ecology
- Environmental and Cultural Studies in Latin America and Beyond
- Botanical Studies and Applications
Harvard University
2024-2025
University of Illinois Chicago
2019-2024
Field Museum of Natural History
2019-2023
University of Nebraska–Lincoln
1992-2005
Reflectance spectroscopy is a non-destructive, rapid, and robust method for estimating functional traits distinguishing species. Spectral reflectance libraries generated from herbarium specimens are an untapped promising resource generating broad phenomic datasets across space, time, We conducted proof-of-concept study using trait data spectra recently dried, pressed leaves, alongside up to 179 years old. assessed the utility transferability of these prediction taxonomic discrimination....
During floristic inventories in remnant cloud forests of the Centinela Ridge Chocó Region Ecuador, where less than 7 km 2 forest patches remain across an area approximately 500 , we recently collected a new species genus Phragmotheca Cuatrec. We describe and illustrate this contrast its morphology with known congeneric species. Due to small range, threatened habitat active targeting by loggers, is assessed as Endangered under IUCN Criterion B1B2ab(I,ii,iii,v).
Summary Leaf reflectance spectroscopy is emerging as an effective tool for assessing plant diversity and function. However, the ability of leaf spectra to detect fine‐scale evolutionary in complicated biological scenarios not well understood. We test if (400–2400 nm) can distinguish species population structure phylogenetic divergence – estimated from genomic data two co‐occurring, hybridizing, ecotypically differentiated Dryas . also analyze correlation among taxonomically diagnostic traits...
Premise of the Study This investigation establishes first DNA ‐sequence‐based phylogenetic hypothesis species relationships in coca family (Erythroxylaceae) and presents its implications for intrageneric taxonomy neotropical biogeography Erythroxylum . We also identify closest wild relatives evolutionary cultivated taxa. Methods focused our phylogenomic inference on largest taxonomic section genus ( Archerythroxylum O.E.Schulz) using concatenation gene tree reconciliation methods from...
Recent exploratory field expeditions to the western slopes of Ecuadorian Andes resulted in discovery a new species Amalophyllon (Gesneriaceae). miraculum J.L.Clark, sp. nov. is described from two localities Centinela region Santo Domingo de los Tsáchilas province. The differentiated congeners by pendent habit, basal rosette leaves, leaf blades with deeply serrate margins, and miniature size. Based on IUCN guidelines, preliminary conservation status assigned as Critically Endangered (CR).
The wheat tribe, Triticeae, has been the subject of molecular phylogenetic analyses for nearly three decades, and extensive conflict apparent from earliest comparisons among DNA-based data sets. While most previous focused primarily on nuclear vs. chloroplast DNA conflict, present analysis provides a broader picture loci throughout tribe.
Abstract Coca is the natural source of cocaine as well a sacred and medicinal plant farmed by South American Amerindians mestizos. The coca crop comprises four closely related varieties classified into two species (Amazonian Huánuco within Erythroxylum Lam., Colombian Trujillo novogranatense (D. Morris) Hieron.) but our understanding domestication evolutionary history these taxa nominal. In this study, we use genomic data from collections to estimate geographic origins genetic diversity...
We report the rediscovery of Critically Endangered cloud forest herb Gasteranthusextinctus, not seen since 1985. In 2019 and 2021, G.extinctus was recorded at five sites in western foothills Ecuadorian Andes, 4-25 km from type locality celebrated Centinela ridge. describe species' distribution, abundance, habitat conservation status offer recommendations for further research efforts focused on small, disjunct remnants it occupies.
ABSTRACT Premise The wheat tribe, Triticeae, has been the subject of molecular phylogenetic analyses for nearly three decades, and extensive conflict apparent from earliest comparisons among DNA-based data sets. While most previous focused primarily on nuclear vs. chloroplast DNA conflict, present analysis provides a broader picture loci throughout tribe. Methods Exon were generated over 1000 using targeted sequence capture with custom baits, nearly-complete genome sequences recovered....
Research Article| January 01, 1896 Age of the lower coals Henry county, Missouri* David White Search for other works by this author on: GSW Google Scholar GSA Bulletin (1896) 8 (1): 287–304. https://doi.org/10.1130/GSAB-8-287 Article history first online: 02 Mar 2017 Cite View This Citation Add to Manager Share Icon Twitter LinkedIn Tools Get Permissions Site White; Missouri. 1896;; doi: Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex...
Abstract— Erythroxylum macrophyllum is a morphologically variable and widely distributed species complex in Central South America with several sub-specific taxa numerous included its synonymy. A single variety grows the Colombo-Venezuelan savanna region which can be distinguished from rest of E. by size leaves, cataphyll stipule characteristics, shape calyx lobes. molecular phylogeny reconstructed 519 nuclear genes also reveals that more closely related to acuminatum pauciflorum than . This...
Erythroxylum ulei var. escalerense is a new variety described from single collection made in remote region of the Cordillera Escalera Loreto, Peru. It an understory shrub exhibiting erect lateral setae on stipules and ovoid fruits characteristic E. ulei, but with much smaller, narrowly elliptic to lanceolate leaves without bifacial coloration. Morphological comparison phylogenetic relationships similar are presented discussed, as well implications for current intrageneric classification system.
Abstract The flowering plant genus Erythroxylum contains approximately 300 species, including the economically and socially consequential crops called coca. We present genome sequences of coca E. novogranatense, two cultigens produced for medicinal quotidian use in Andes Amazon regions South America, as well international cocaine industry. Sequencing was performed on an Illumina X-Ten platform, reads were assembled by a de novo method followed finishing via comparison with several species...
<ns3:p>The flowering plant genus <ns3:italic>Erythroxylum </ns3:italic>contains approximately 280 species, including the economically and socially consequential crops called coca. We present genome sequences of coca </ns3:italic>and<ns3:italic> E. novogranatense</ns3:italic>, two cultigens produced for medicinal quotidian use in Andes Amazon regions South America, as well international cocaine industry. Sequencing was performed on an Illumina X-Ten platform, reads were assembled by a de novo...
We present the whole genome sequences of Dryas alaskensis, D. ajanensis, and integrifolia from plants collected interior Alaska. performed deep Illumina sequencing a single leaf each voucher. The sequence reads were then de novo assembled conserved regions across all preassemblies used to join contigs in finishing step. raw data is publicly available via Genbank.