Contact Sara May (srm183@psu.edu) and Lina Rodriguez Salamanca (lina@iasta.edu) for suggestions to include.

Peer review highlights

Evolving Plant Diagnostics During a Pandemic https://doi.org/10.1094/PHP-08-20-0074-MR

Diagnostic guides

Diagnostic Guide: Fusarium Crown Rot of Winter Wheat https://doi.org/10.1094/PHP-10-20-0091-DG
Sunflower Wilt Diseases: Charcoal Rot, Phialophora Yellows, and Verticillium Wilt https://doi.org/10.1094/PHP-10-20-0081-DG

Methods and protocols

Comparison of Nanopore Sequencing Protocols and Real-Time Analysis for Phytopathogen Diagnostics https://doi.org/10.1094/PHP-02-20-0013-RS
Comparison of qPCR and Metabarcoding Methods as Tools for the Detection of Airborne Inoculum of Forest Fungal Pathogens https://doi.org/10.1094/PHYTO-02-20-0034-R
Detection of Airborne Sporangia of Pseudoperonospora cubensis and P. humuli in Michigan Using Burkard Spore Traps Coupled to Quantitative PCR https://doi.org/10.1094/PDIS-07-20-1534-RE

Pathogens

Characterization of Diaporthe spp. Associated with Spruce Decline on Colorado Blue Spruce in Michigan https://doi.org/10.1094/PHYTO-08-19-0287-R

Soybean Anthracnose Caused by Colletotrichum Species: Current Status and Future Prospects https://doi.org/10.1111/mpp.13036

The History of Botrytis Taxonomy, the Rise of Phylogenetics, and Implications for Species Recognition https://doi.org/10.1094/PHYTO-06-20-0211-IA 
 

Notable First Reports

First Report: Coinfection of Sarcococca hookeriana (Sweetbox) by Coccinonectria pachysandricola and Calonectria pseudonaviculata Causes a Foliar Disease of Sweetbox in Pennsylvania  https://doi.org/10.1094/PDIS-06-20-1198-PDN

First Report of Rubbery Rot of Potato Caused by Geotrichum candidum in the United States https://doi.org/10.1094/PDIS-08-20-1815-PDN

First Report of the Hop Cyst Nematode, Heterodera humuli, in Two Counties of the Yakima Valley Region, WA, U.S.A. https://doi.org/10.1094/PDIS-08-20-1769-PDN

First Report of Pythium ultimum Causing Damping-Off of Sugar Beet (Beta vulgaris) in Montana, U.S.A. https://doi.org/10.1094/PDIS-10-20-2108-PDN

First Report of Pythium ultimum Causing Crown Rot in Greenhouse-Grown Cannabis sativa in California https://doi.org/10.1094/PDIS-10-20-2228-PDN

First Report of Beet curly top virus Infecting Industrial Hemp (Cannabis sativa) in Arizona https://doi.org/10.1094/PDIS-11-20-2330-PDN

First Report of Gymnosporangium clavipes Causing Stem Galls on Crataegus marshallii in Florida, U.S.A. https://doi.org/10.1094/PDIS-11-20-2383-PDN

First Report of Dickeya dianthicola Causing Blackleg on New Guinea Impatiens (Impatiens hawkeri) in New York State, U.S.A. https://doi.org/10.1094/PDIS-09-20-2020-PDN
First Report of Armillaria Root Disease Pathogen, Armillaria gallica, on Rhododendron and Quercus rubra in Georgia, U.S.A. https://doi.org/10.1094/PDIS-07-20-1567-PDN

First Report of Colletotrichum scovillei Causing Anthracnose Fruit Rot on Pepper in South Carolina, United States https://doi.org/10.1094/PDIS-08-20-1656-PDN

First Report of Mycoleptodiscus terrestris Causing Root Rot of Soybean in Indiana https://doi.org/10.1094/PDIS-09-20-2023-PDN

First Report of the Root-Knot Nematode, Meloidogyne floridensis, on Tomato in Georgia, U.S.A. https://doi.org/10.1094/PDIS-10-20-2286-PDN

First Report of Macrophomina Crown Rot Caused by Macrophomina phaseolina on Basil in the United States https://doi.org/10.1094/PDIS-10-20-2300-PDN
First Report of Bipolaris yamadae Leaf Spot Disease on Guinea Grass (Panicum maximum) in Florida https://doi.org/10.1094/PDIS-07-20-1486-PDN
First Report of Fusarium armeniacum Causing Fusarium Head Blight on Soft Red Winter Wheat in Illinois https://doi.org/10.1094/PDIS-07-20-1506-PDN

First report of Talaromyces pinophilus causing postharvest rot of sugar beet (Beta vulgaris) in Minnesota, USA http://dx.doi.org/10.5197/j.2044-0588.2020.042.015
 
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