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

Diagnostic Guides 

Highlighting Coleus issue in eGRO: Nutritional disorders , Physiological disorders, Coleus diseases, Coleus pests. Older articles: Coleus and basil downy mildew, Coleus lower foliage dark, angular, leaf spots, INSV on coleus, Coleus downy mildew update, Coleus: Impatiens Necrotic Spot Virus (INSV), Coleus stock plants: Don't let viruses, foliar nematodes or downy mildew ruin your crop, White mold (Sclerotinia) on coleus
 

Pathogens

Detection of Pythium spp. in golf course irrigation systems https://doi.org/10.1094/PDIS-02-21-0399-RE
 

Peer Review Highlights

Genomic approaches to plant-pathogen epidemiology and diagnostics https://doi.org/10.1146/annurev-phyto-020620-121736 
 
Localization and mechanical transmission of tomato brown rugose fruit virus in tomato seeds https://doi.org/10.1094/PDIS-11-20-2413-RE 
 
Research advances in potyviruses: from the laboratory bench to the field https://doi.org/10.1146/annurev-phyto-020620-114550 
 

Methods and Protocols

Development of a real-time loop-mediated isothermal amplification assay for Stromatinia cepivora in response to an outbreak in Northern Idaho https://doi.org/10.1094/PHP-04-21-0075-RS
 
Development of a multiplex TaqMan qPCR targeting unique genomic regions for the specific and sensitive detection of Pectobacterium species and P. parmentieri https://doi.org/10.1111/jam.15447 
 
Comparison of three commercial DNA extraction kits for the enhancement of PCR assay sensitivity for Xanthomonas euvesicatoria pv. allii https://doi.org/10.1111/jam.15280 
 
A SYBR Green qPCR Method for detecting and quantifying spores of Colletotrichum acutatum and C. gloeosporioides species complexes causing ripe rot of grape https://doi.org/10.1094/PHP-07-21-0101-RS
 
Detection and identification of a ‘Candidatus Liberibacter solanacearum’ species from ash tree infesting psyllids https://doi.org/10.1094/PHYTO-02-21-0060-SC
 
LAMP assay for distinguishing Fusarium oxysporum and Fusarium commune in lotus (Nelumbo nucifera) rhizomes https://doi.org/10.1094/PDIS-06-21-1223-RE
 
Loop-mediated isothermal amplification assay for rapid detection of Phoma macdonaldii, the causal agent of sunflower black stem https://doi.org/10.1094/PDIS-07-21-1409-RE
 

Notable First Reports

Herbaceous ornamentals:

First report of Meloidogyne javanica pathogenic on hybrid lavender (Lavandula × intermedia) in the United States https://doi.org/10.1094/PDIS-06-21-1175-PDN
 

Vegetables and herbs:

First report of cucurbit chlorotic yellows virus affecting watermelon in the United States https://doi.org/10.1094/PDIS-03-21-0639-PDN
 
First report of watermelon crinkle leaf-associated virus 1 (WCLaV-1) and WCLaV-2 in watermelon (Citrullus lanatus) plants coinfected with cucurbit chlorotic yellows virus in Florida https://doi.org/10.1094/PDIS-06-21-1141-PDN
 

Tree fruit and small fruit:

First report of sclerotinia fruit and crown rot caused by Sclerotinia sclerotiorum on short-day strawberry in Maryland https://doi.org/10.1094/PDIS-07-21-1357-PDN
 
First report of coffee leaf rust caused by Hemileia vastatrix on coffee (Coffea arabica) in Hawaii https://doi.org/10.1094/PDIS-05-21-1072-PDN
 

Field crops:

First report of Aphanomyces euteiches race 1 and race 2 causing Aphanomyces root rot on alfalfa (Medicago sativa) in South Dakota https://doi.org/10.1094/PDIS-08-21-1733-PDN
 
Colletotrichum fioriniae infecting invasive Japanese hop (Humulus scandens) in the United States https://doi.org/10.1094/PDIS-06-21-1191-PDN
 
First report of wilt and necrosis caused by Diplodia seriata on cowpea in Tennessee, USA http://dx.doi.org/10.5197/j.2044-0588.2020.042.012
 
First report of gray leaf spot caused by Pyricularia oryzae (synonym: Magnaporthe oryzae) in oat (Avena sativa) in Georgia, U.S.A. https://doi.org/10.1094/PDIS-06-21-1182-PDN

First report of Curvularia lunata causing Curvularia leaf spot of corn in Delaware https://doi.org/10.1094/PDIS-04-21-0742-PDN

First report of Exserohilum pedicellatum causing root rot of corn in Indiana https://doi.org/10.1094/PDIS-06-21-1245-PDN

First report of Fusarium graminearum causing flower blight on hemp (Cannabis sativa) in Kentucky https://doi.org/10.1094/PDIS-06-21-1292-PDN
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