Richard D. Johnson

Richard D. Johnson publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Richard D. Johnson sits on this spectrum.

Richard D. Johnson D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Richard D. Johnson sits on this spectrum.

Best Publications

• Plant-Symbiotic Fungi as Chemical Engineers: Multi-Genome Analysis of the Clavicipitaceae Reveals Dynamics of Alkaloid Loci

  Christopher L. Schardl;Carolyn A. Young;Uljana Hesse;Stefan G. Amyotte

  451
  Citations

• The exploitation of epichloae endophytes for agricultural benefit

  Linda J. Johnson;Anouck C. M. de Bonth;Lyn R. Briggs;John R. Caradus

  336
  Citations

• Epichloë endophytes grow by intercalary hyphal extension in elongating grass leaves.

  Michael J. Christensen;Raymond J. Bennett;Helal A. Ansari;Hironori Koga

  300
  Citations

• High nitrogen supply and carbohydrate content reduce fungal endophyte and alkaloid concentration in Lolium perenne

  Susanne Rasmussen;Anthony J. Parsons;Shalome Bassett;Michael J. Christensen

  288
  Citations

• Elimination of ergovaline from a grass-Neotyphodium endophyte symbiosis by genetic modification of the endophyte.

  Daniel G. Panaccione;Richard D. Johnson;Jinghong Wang;Carolyn A. Young

  250
  Citations

• A complex gene cluster for indole-diterpene biosynthesis in the grass endophyte Neotyphodium lolii

  Carolyn A. Young;Silvina Felitti;Katherine Shields;German Spangenberg

  233
  Citations

• Cloning and characterization of a cyclic peptide synthetase gene from Alternaria alternata apple pathotype whose product is involved in AM-toxin synthesis and pathogenicity.

  Unknown

  219
  Citations

• A complex ergovaline gene cluster in epichloe endophytes of grasses.

  Damien J. Fleetwood;Damien J. Fleetwood;Barry Scott;Geoffrey A. Lane;Aiko Tanaka

  168
  Citations

• MOLECULAR KARYOTYPES FOR ALTERNARIA PLANT PATHOGENS KNOWN TO PRODUCE HOST-SPECIFIC TOXINS

  Unknown

  158
  Citations

• Spontaneous loss of a conditionally dispensable chromosome from the Alternaria alternata apple pathotype leads to loss of toxin production and pathogenicity.

  Unknown

  143
  Citations

• An Extracellular Siderophore Is Required to Maintain the Mutualistic Interaction of Epichloë festucae with Lolium perenne

  Linda J. Johnson;Albert Koulman;Michael Christensen;Geoffrey A. Lane

  108
  Citations

• A polymerase chain reaction-based method to specifically detect Alternaria alternata apple pathotype (A. mali), the causal agent of Alternaria blotch of apple.

  Unknown

  97
  Citations

• Integrative transformation of the mycotoxin-producing fungus, Penicillium paxilli

  Yasuo Itoh;Richard Johnson;Barry Scott

  91
  Citations

• A morphological change in the fungal symbiont Neotyphodium lolii induces dwarfing in its host plant Lolium perenne

  Unknown

  90
  Citations

• Identification of differentially expressed genes in the mutualistic association of tall fescue with Neotyphodium coenophialum

  Linda J Johnson;Richard D Johnson;Christopher L Schardl;Daniel G Panaccione

  87
  Citations

• Beneficial endophytic microorganisms of Brassica – A review

  Unknown

  84
  Citations

• Gene-Based Sequence Diversity Analysis of Field Pea (Pisum)

  Unknown

  82
  Citations

• Paxilline-negative mutants of Penicillium paxilli generated by heterologous and homologous plasmid integration

  Carolyn Young;Yasuo Itoh;R. Johnson;I. Garthwaite

  74
  Citations

• Seed Transmission of Epichloë Endophytes in Lolium perenne Is Heavily Influenced by Host Genetics

  Unknown

  72
  Citations

• Variation in host range, systemic infection and epidemiology of <i>Leptosphaeria maculans</i>

  Unknown

  72
  Citations