World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
56
Citations
9674
World Ranking
1555
National Ranking
413

Overview

What is he best known for?

The fields of study he is best known for:

  • Botany
  • Gene
  • Genus

The scientist’s investigation covers issues in Phylogenetic tree, Phylogenetics, Genetics, Chloroplast DNA and Molecular phylogenetics. His Phylogenetics research includes themes of Evolutionary biology and Subfamily. His studies in Subfamily integrate themes in fields like Maximum parsimony and Apiaceae.

The various areas that Stephen R. Downie examines in his Chloroplast DNA study include Caryophyllales, Inverted repeat and Intron. His Molecular phylogenetics study incorporates themes from Internal transcribed spacer, Monophyly and Ribosomal DNA. His Monophyly research is multidisciplinary, incorporating perspectives in Intergenic region and Genus, Botany.

His most cited work include:

  • Use of Chloroplast DNA Rearrangements in Reconstructing Plant Phylogeny (250 citations)
  • Genome of the long-living sacred lotus ( Nelumbo nucifera Gaertn.) (237 citations)
  • a molecular phylogeny of apiaceae subfamily Apioideae: evidence from nuclear ribosomal DNA internal transcribed spacer sequences (235 citations)

What are the main themes of his work throughout his whole career to date?

Stephen R. Downie mostly deals with Botany, Phylogenetic tree, Monophyly, Apiaceae and Chloroplast DNA. His research in Botany intersects with topics in Maximum parsimony, Polyphyly and Internal transcribed spacer. His Phylogenetic tree research is multidisciplinary, relying on both Evolutionary biology, Phylogenetics and Subfamily.

His research investigates the connection between Monophyly and topics such as Sister group that intersect with issues in Acronema. His Apiaceae study combines topics in areas such as Systematics, Biogeography and Morphology. His Chloroplast DNA study necessitates a more in-depth grasp of Genetics.

He most often published in these fields:

  • Botany (58.91%)
  • Phylogenetic tree (39.53%)
  • Monophyly (29.46%)

What were the highlights of his more recent work (between 2013-2021)?

  • Botany (58.91%)
  • Apiaceae (27.91%)
  • Chloroplast DNA (24.81%)

In recent papers he was focusing on the following fields of study:

His main research concerns Botany, Apiaceae, Chloroplast DNA, Taxon and Phylogenetic tree. His studies deal with areas such as Clade and Molecular phylogenetics as well as Botany. His work deals with themes such as Evolutionary biology, Genetic algorithm, Phylogenetics, Ribosomal DNA and Taxonomy, which intersect with Apiaceae.

The Chloroplast DNA portion of his research involves studies in Genome and Genetics. Stephen R. Downie has researched Taxon in several fields, including Disjunct distribution, Phylogeography, Subfamily and Polyphyly. His Phylogenetic tree research is mostly focused on the topic Monophyly.

Between 2013 and 2021, his most popular works were:

  • A Comparative Analysis of Whole Plastid Genomes from the Apiales: Expansion and Contraction of the Inverted Repeat, Mitochondrial to Plastid Transfer of DNA, and Identification of Highly Divergent Noncoding Regions (93 citations)
  • Identification of species in the angiosperm family Apiaceae using DNA barcodes. (36 citations)
  • The role of the Southern Hemisphere in the evolutionary history of Apiaceae, a mostly north temperate plant family (15 citations)

In his most recent research, the most cited papers focused on:

  • Botany
  • Gene
  • Genus

Apiaceae, Taxon, Botany, Phylogenetic tree and Ecology are his primary areas of study. His work carried out in the field of Apiaceae brings together such families of science as Chloroplast DNA, Genetics, Inverted repeat and Temperate climate. His Botany research is multidisciplinary, incorporating elements of DNA barcoding and Molecular phylogenetics.

His Phylogenetic tree study integrates concerns from other disciplines, such as Cymopterus, Phylogenetics and Subfamily. The study incorporates disciplines such as Zoology and Heracleum in addition to Phylogenetics. His biological study spans a wide range of topics, including Lomatium, Polyphyly, Genus, Tribe and Monophyly.

Best Publications

  • Genome of the long-living sacred lotus ( Nelumbo nucifera Gaertn.)

    Ray Ming;Ray Ming;Robert VanBuren;Yanling Liu;Mei Yang

  • a molecular phylogeny of apiaceae subfamily Apioideae: evidence from nuclear ribosomal DNA internal transcribed spacer sequences

    Stephen R. Downie;Deborah S. Katz-Downie

  • Use of Chloroplast DNA Rearrangements in Reconstructing Plant Phylogeny

    Stephen R. Downie;Jeffrey D. Palmer

  • A phylogeny of the flowering plant family Apiaceae based on chloroplast DNA rpl16 and rpoC1 intron sequences: towards a suprageneric classification of subfamily Apioideae.

    Stephen R. Downie;Deborah S. Katz-Downie;Mark F. Watson

  • Phylogenomics and the rise of the angiosperms

    Unknown

  • Major clades within Apiaceae subfamily Apioideae as inferred by phylogenetic analysis of nrDNA ITS sequences

    Stephen R. Downie;Krzysztof Spalik;Deborah S. Katz-Downie;Jean-Pierre Reduron

  • Nelumbo nucifera [data set]

    Ray Ming;Robert Vanburen;Yanling Liu;Mei Yang

  • A Comparative Analysis of Whole Plastid Genomes from the Apiales: Expansion and Contraction of the Inverted Repeat, Mitochondrial to Plastid Transfer of DNA, and Identification of Highly Divergent Noncoding Regions

    Stephen R. Downie;Robert K. Jansen;Robert K. Jansen

  • Molecular systematics of Apiaceae subfamily Apioideae: phylogenetic analyses of nuclear ribosomal DNA internal transcribed spacer and Plastid rpoC1 intron sequences

    Stephen R. Downie;Seemanti Ramanath;Deborah S. Katz-Downie;Esmeralda Llanas

  • TRIBES AND CLADES WITHIN APIACEAE SUBFAMILY APIOIDEAE: THE CONTRIBUTION OF MOLECULAR DATA

    S. R. Downie;G. M. Plunkett;M. F. Watson;K. Spalik

  • Restriction site mapping of the chloroplast DNA inverted repeat : A molecular phylogeny of the Asteridae

    Stephen R Downie;Jeffrey D Palmer

  • A phylogeny of Apiaceae tribe Scandiceae: evidence from nuclear ribosomal DNA internal transcribed spacer sequences

    Stephen R. Downie;Deborah S. Katz-Downie;Krzysztof Spalik

  • Molecular systematics of Old World Apioideae (Apiaceae): relationships among some members of tribe Peucedaneae sensu lato, the placement of several island-endemic species, and resolution within the apioid superclade

    Stephen R Downie;Mark F Watson;Krzysztof Spalik;Deborah S Katz-Downie

  • Phylogenetic Relationships and Chromosome Number Evolution in Passiflora

    A. Katie Hansen;Lawrence E. Gilbert;Beryl B. Simpson;Stephen R. Downie

  • The highly rearranged chloroplast genome of Trachelium caeruleum (Campanulaceae): multiple inversions, inverted repeat expansion and contraction, transposition, insertions/deletions, and several repeat families

    Mary E. Cosner;Robert K. Jansen;Jeffrey D. Palmer;Stephen R. Downie

  • Towards a molecular phylogeny of Apiaceae subfamily Apioideae: Additional information from nuclear ribosomal DNA ITS sequences

    Deborah S. Katz-Downie;Carmen M. Valiejo-Roman;Elena I. Terentieva;Aleksey V. Troitsky

  • The phylogenetic position of Peucedanum sensu lato and allied genera and their placement in tribe Selineae (Apiaceae, subfamily Apioideae)

    K. Spalik;J. P. Reduron;Stephen R Downie

  • Circumscription and phylogeny of Apiaceae subfamily Saniculoideae based on chloroplast DNA sequences

    Carolina I. Calviño;Stephen R. Downie

  • Expansion and Contraction of the Chloroplast Inverted Repeat in Apiaceae Subfamily Apioideae

    Gregory M. Plunkett;Gregory M. Plunkett;Stephen R. Downie

  • The evolutionary history of Eryngium (Apiaceae, Saniculoideae): Rapid radiations, long distance dispersals, and hybridizations

    Carolina I. Calviño;Susana G. Martínez;Stephen R. Downie

  • SIX INDEPENDENT LOSSES OF THE CHLOROPLAST DNA rpl2 INTRON IN DICOTYLEDONS: MOLECULAR AND PHYLOGENETIC IMPLICATIONS.

    Stephen R. Downie;Richard G. Olmstead;Gerard Zurawski;Douglas E. Soltis

  • Major lineages within Apiaceae subfamily Apioideae: a comparison of chloroplast restriction site and DNA sequence data.

    Gregory M. Plunkett;Stephen R. Downie

  • Phylogenetic analysis of chloroplast rps16 intron sequences reveals relationships within the woody southern African Apiaceae subfamily Apioideae

    Stephen R Downie;Deborah S Katz-Downie

  • A chloroplast DNA phylogeny of the Caryophyllales based on structural and inverted repeat restriction site variation

    Stephen R. Downie;Jeffrey D. Palmer

  • A molecular phylogenetic study of southern African Apiaceae

    Carolina I. Calviño;Patricia M. Tilney;Ben Erik Van Wyk;Stephen R. Downie

Frequent Co-Authors

Jeffrey D. Palmer
Jeffrey D. Palmer Indiana University
Gregory M. Plunkett
Gregory M. Plunkett New York Botanical Garden
J. William Schopf
J. William Schopf University of California, Los Angeles
Donald R. Ort
Donald R. Ort University of Illinois at Urbana-Champaign
Claude W. dePamphilis
Claude W. dePamphilis Pennsylvania State University
Ray Ming
Ray Ming University of Illinois at Urbana-Champaign
Robert K. Jansen
Robert K. Jansen The University of Texas at Austin
Kenneth H. Wolfe
Kenneth H. Wolfe University College Dublin
Andrew H. Paterson
Andrew H. Paterson University of Georgia
Michael C. Schatz
Michael C. Schatz Johns Hopkins University

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