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

Diagnostic guides

Diagnostic Guide: Fusarium Crown Rot of Winter Wheat
Sunflower Wilt Diseases: Charcoal Rot, Phialophora Yellows, and Verticillium Wilt

Methods and protocols

Comparison of Nanopore Sequencing Protocols and Real-Time Analysis for Phytopathogen Diagnostics

Comparison of qPCR and Metabarcoding Methods as Tools for the Detection of Airborne Inoculum of Forest Fungal Pathogens

Detection of Airborne Sporangia of Pseudoperonospora cubensis and P. humuli in Michigan Using Burkard Spore Traps Coupled to Quantitative PCR

Pathogens

Characterization of Diaporthe spp. Associated with Spruce Decline on Colorado Blue Spruce in Michigan

Soybean Anthracnose Caused by Colletotrichum Species: Current Status and Future Prospects

The History of Botrytis Taxonomy, the Rise of Phylogenetics, and Implications for Species Recognition

Notable First Reports

First Report: Coinfection of Sarcococca hookeriana (Sweetbox) by Coccinonectria pachysandricola and Calonectria pseudonaviculata Causes a Foliar Disease of Sweetbox in Pennsylvania

First Report of Rubbery Rot of Potato Caused by Geotrichum candidum in the United States

First Report of the Hop Cyst Nematode, Heterodera humuli, in Two Counties of the Yakima Valley Region, WA, U.S.A.

First Report of Pythium ultimum Causing Damping-Off of Sugar Beet (Beta vulgaris) in Montana, U.S.A.

First Report of Pythium ultimum Causing Crown Rot in Greenhouse-Grown Cannabis sativa in California

First Report of Beet curly top virus Infecting Industrial Hemp (Cannabis sativa) in Arizona

First Report of Gymnosporangium clavipes Causing Stem Galls on Crataegus marshallii in Florida, U.S.A.

First Report of Dickeya dianthicola Causing Blackleg on New Guinea Impatiens (Impatiens hawkeri) in New York State, U.S.A.

First Report of Armillaria Root Disease Pathogen,Armillaria gallica, on Rhododendron and Quercus rubra in Georgia, U.S.A.

First Report of Colletotrichum scovillei Causing Anthracnose Fruit Rot on Pepper in South Carolina, United States

First Report of Mycoleptodiscus terrestris Causing Root Rot of Soybean in Indiana

First Report of the Root-Knot Nematode, Meloidogyne floridensis, on Tomato in Georgia, U.S.A.

First Report of Macrophomina Crown Rot Caused by Macrophomina phaseolina on Basil in the United States

First Report of Bipolaris yamadae Leaf Spot Disease on Guinea Grass (Panicum maximum) in Florida

First Report of Fusarium armeniacum Causing Fusarium Head Blight on Soft Red Winter Wheat in Illinois

First report of Talaromyces pinophilus causing postharvest rot of sugar beet (Beta vulgaris) in Minnesota, USA
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