Sara May, The Pennsylvania State University – NEPDN, Swarnalatha Moparthi, North Carolina State University – SPDN, and Samantha Fieweger, Wisconsin Department of Agriculture, Trade, and Consumer Protection - NCPDN
The Communicator: Volume 5, Issue 12, December 2024
Contact Sara May (srm183@psu.edu), Swarnalatha Moparthi (smopart@ncsu.edu), and Samantha Fieweger (sam.fieweger@wisconsin.gov) for suggestions to include. 
Denotes publications with one or more authors who are members of NPDN.
Diagnostic Guides
A diagnostic guide for orange rust disease in sugarcane https://doi.org/10.1094/PHP-02-24-0013-DG
A diagnostic guide for Fusarium fruit rot of pumpkin and winter squash https://doi.org/10.1094/PHP-03-24-0025-DG
A diagnostic guide for Berkeleyomyces rouxiae causing black root rot of cotton https://doi.org/10.1094/PHP-05-24-0043-DG
Diagnostic guide for Pythium root rot in hydroponic leafy green and herb production https://doi.org/10.1094/PHP-07-24-0070-DG
A diagnostic guide for select Phytophthora species infecting floriculture crops https://doi.org/10.1094/PHP-02-24-0015-DG
Pathogens
Isolation and characterization of plant-pathogenic Streptomyces species associated with potato common scab disease in Türkiye https://doi.org/10.1111/ppa.14001
Pathotypes and races of Pseudoperonospora cubensis: Two concepts of virulence differentiation https://doi.org/10.1111/ppa.13993Elsinoe species: The rise of scab diseases https://doi.org/10.1111/ppa.14015
Host range characterization of Phytophthora sansomeana across corn, soybean, wheat, winter cereal rye, dry bean, and oats and an in vitro assessment of seed treatment sensitivity https://doi.org/10.1094/PDIS-11-23-2303-RE
Cercospora leaf blight and purple seed stain of soybean: A permanent challenge https://doi.org/10.1111/ppa.13956 Late-season decline, a bacterial disease of corn caused by Pantoea ananatis, identified in sorghum https://doi.org/10.1094/PHP-04-24-0038-SC
Host range of Phytophthora spp. from berry crops in Huelva, Spain https://doi.org/10.1094/PDIS-06-23-1068-RE
Identity, pathogenicity, and genetic diversity of Lasiodiplodia species associated with stem-end rot of avocado in China https://doi.org/10.1094/PDIS-09-23-1939-SR Putting ‘X’ into context: The diversity of ‘Candidatus Phytoplasma pruni’ strains associated with the induction of X-disease https://doi.org/10.1094/PDIS-10-23-2243-RE
Seasonal dynamics and distribution of Xylella fastidiosa in infected almond trees https://doi.org/10.1094/PHYTO-07-23-0240-R
Staphylococcus warneri, an unconventional plant pathogen involved in canker disease of almond and other Prunus species https://doi.org/10.1111/ppa.13920 The origin of the problem: Characterization of Paraguayan Septoria steviae, causal agent of Septoria leaf spot of stevia, based on multilocus sequence analysis https://doi.org/10.1094/PDIS-11-23-2362-RE Identification and pathogenicity of fungal species associated with branch canker and shoot blight on persimmons (Diospyros kaki) in California https://doi.org/10.1094/PDIS-12-23-2629-SC
Biological characterization of Physostegia chlorotic mottle virus, an emergent virus infecting vegetables in diversified production systems https://doi.org/10.1094/PHYTO-06-23-0194-R
Fusarium oxysporum f. sp. apii race 4 threatening celery production in South Florida https://doi.org/10.1094/PDIS-01-24-0075-RE
Survey of Phytophthora diversity reveals P. abietivora as a potential Phytophthora root rot pathogen in Québec Christmas tree plantations https://doi.org/10.1094/PDIS-12-23-2670-SR
Methods and protocols
Development of a TaqMan assay for the detection of ‘Candidatus Phytoplasma brasiliense’ and assessment by high-resolution melt curve analysis https://doi.org/10.1094/PDIS-04-24-0742-RE
Validation of PCR diagnostic assays for detection and identification of all Ralstonia solanacearum sequevars causing Moko disease in banana https://doi.org/10.1094/PHYTO-06-24-0190-R
PCR-based detection for the quarantine fungus Colletotrichum kahawae, a biosecurity threat to the coffee (Coffea arabica) industry worldwide https://doi.org/10.1094/PDIS-09-23-1788-SR
Probe-based loop-mediated isothermal amplification assay for rapid detection of two Clarireedia spp., the causal agent of dollar spot of turfgrass https://doi.org/10.1094/PDIS-12-23-2608-RE
Horizontal and vertical distribution of Clarireedia spp. in asymptomatic and symptomatic creeping bentgrass cultivars https://doi.org/10.1094/PDIS-08-23-1570-RE
Research on a method for identification of peanut pests and diseases based on a lightweight LSCDNet model https://doi.org/10.1094/PHYTO-01-24-0013-R
Two new qPCR assays for detecting and quantifying the Aspergillus flavus and Aspergillus parasiticus clades in maize kernels https://doi.org/10.1111/ppa.13982
Localization of Iris yellow spot virus in naturally infected onion plants: A sampling approach for reliable diagnosis https://doi.org/10.1094/PHP-05-24-0046-RS
Development of specific primers for Fusarium oxysporum formae speciales rapae and matthiolae with an integrated multiplex PCR for distinguishing four formae speciales on Brassicaceae https://doi.org/10.1094/PDIS-08-23-1656-RE
LAMP assay to detect Elsinoë necatrix, an important eucalyptus shoot and leaf pathogen https://doi.org/10.1094/PDIS-01-24-0086-RE
Advancements and applications of loop-mediated isothermal amplification (LAMP) technology in the detection of viral diseases in fruit crops https://doi.org/10.1111/ppa.13961
Development and evaluation of real-time quantitative PCR assays for detection of Phellinus noxius causing brown root rot disease https://doi.org/10.1094/PDIS-01-24-0238-RE Evaluating the utilization of synthetic oligonucleotides as a positive control in the detection of ToBRFV in pepper seeds https://doi.org/10.1094/PHP-07-23-0064-SC Image-based crop disease detection using machine learning https://doi.org/10.1111/ppa.14006
New approaches to plant pathogen detection and disease diagnosis https://doi.org/10.1094/PHYTO-10-23-0366-IA
Notable First Reports
Herbaceous ornamentals and turfgrass:
Colletotrichum caladii sp. nov. causing anthracnose leaf spot of Caladium × hortulanum (Araceae) in Florida, U.S.A. https://doi.org/10.1094/PDIS-08-22-1781-RE First report of a ‘Candidatus Phytoplasma sacchari’-related strain associated with yellowing and decline of silver bluestem in Texas, U.S.A. https://doi.org/10.1094/PDIS-03-24-0524-PDN
First report of Phialocephala bamuru causing root rot on hard fescue (Festuca brevipila) in the United States https://doi.org/10.1094/PDIS-12-23-2771-PDN
First report of a phytoplasma strain in the elm yellows group (16SrV) associated with Virginia creeper in Maryland, U.S.A. https://doi.org/10.1094/PDIS-06-24-1176-PDN
First report of powdery mildew Caused by Golovinomyces ambrosiae on Verbena × hybrida in the United States https://doi.org/10.1094/PDIS-06-24-1336-PDN
First report of lily mottle virus naturally Infecting lily (Lilium asiatica) in Texas, U.S.A. https://doi.org/10.1094/PDIS-07-24-1485-PDN First report of Erwinia pyrifoliae causing flower blight and fruit rot on greenhouse-grown Fragaria × ananassa in the United States https://doi.org/10.1094/PDIS-06-24-1337-PDN
First detection of Pseudocerradoa paullula causing aroid leaf rust on swiss cheese plant (Monstera deliciosa) in Virginia https://doi.org/10.1094/PDIS-07-24-1540-PDN
First report of Sclerotinia minor causing soft rot of Scabiosa atropurpurea in California https://doi.org/10.1094/PDIS-08-24-1631-PDN
Lavender harbors more viruses than previously thought: First report of raspberry ringspot virus and phlox virus M in Lavandula × intermedia https://doi.org/10.1094/PDIS-06-23-1227-RE
Woody ornamentals and forests: Phytophthora fagacearum D.S. Bily, X. Yang, C.E. Giles & S.N. Jeffers, sp. nov. on Beech https://fuse-journal.org/images/Issues/FP1614-1696.pdf page 312-313
First report of Phytopythium litorale causing root rot on Kousa dogwood in Tennessee and the United States https://doi.org/10.1094/PDIS-03-24-0616-PDN
Vegetables, herbs and table beet:
First report of Xanthomonas perforans causing bacterial spot of pepper (Capsicum annuum) in North Carolina https://doi.org/10.1094/PDIS-02-24-0444-PDN
First global report of Hyaloperonospora brassicae in commercial broccoli and cabbage microgreens https://doi.org/10.1094/PDIS-01-24-0266-PDN First report of melon severe mosaic orthotospovirus infecting cucurbits in the United States https://doi.org/10.1094/PDIS-02-24-0378-PDN
First Report of Colletotrichum scovillei Causing Anthracnose Fruit Rot of Pepper in Ohio https://doi.org/10.1094/PDIS-04-24-0778-PDN
First report of anthracnose on banana peppers caused by Colletotrichum scovillei in New York https://doi.org/10.1094/PDIS-04-24-0735-PDN
First report of Fusarium oxysporum f. sp. lactucae causing wilt on greenhouse-grown lettuce in North Carolina https://doi.org/10.1094/PDIS-02-24-0364-PDN
First report of Globisporangium uncinulatum (syn. Pythium uncinulatum) causing Pythium wilt of fennel in California https://doi.org/10.1094/PDIS-05-24-0986-PDN
First report of stem blight of mungbean (Vigna radiata) caused by Diaporthe longicolla in the United States https://doi.org/10.1094/PDIS-04-24-0791-PDN First report of Rhizoctonia solani AG 4 HG-III causing stem lesion of watermelon in Idaho https://doi.org/10.1094/PDIS-04-24-0837-PDN
First report of impatiens necrotic spot virus (INSV) infecting tomatoes in North Carolina https://doi.org/10.1094/PDIS-04-24-0878-PDN
Emergence of watermelon chlorotic stunt virus in melon and watermelon in the southwestern United States https://doi.org/10.1094/PDIS-05-24-1009-PDN First report of Fusarium falciforme causing root and stem rot in cowpea (syn. black-eyed pea; Vigna unguiculata) in California https://doi.org/10.1094/PDIS-08-24-1609-PDN
First report on the occurrence of tomato yellow leaf curl virus in Tennessee https://doi.org/10.1094/PDIS-07-24-1512-PDN First report of ‘Candidatus Phytoplasma asteris’-related strains (subgroup 16SrI-A) associated with aster yellows on hrysanthemums in Oklahoma https://doi.org/10.1094/PDIS-03-24-0693-PDN
First report of Alternaria leaf spot caused by Alternaria brassicae on broccoli in North Carolina, United States https://doi.org/10.1094/PDIS-04-24-0740-PDN
Tree fruit and small fruit: berries, nuts, stone and pome fruit:
First report of root rot of strawberry caused by Fusarium cugenangense, a member of the F. oxysporum species complex, in Tennessee, U.S.A. https://doi.org/10.1094/PDIS-01-24-0062-PDN
First report of Pseudomonas amygdali pv. morsprunorum causing bacterial canker in sweet cherry orchards in Washington State https://doi.org/10.1094/PDIS-04-24-0718-PDN
First report of Neopestalotiopsis spp. causing leaf spot and petiole blight on strawberry in New England https://doi.org/10.1094/PDIS-04-24-0893-PDN First report of the new Neopestalotiopsis species causing strawberry leaf spot and fruit rot in Georgia https://doi.org/10.1094/PDIS-02-24-0409-PDN
First report of nectarine virus M in grapefruit (Citrus × paradisi Macfad.) in association with citrus chlorotic blotch disease in Texas, U.S.A. https://doi.org/10.1094/PDIS-05-24-1024-PDN
First report of strawberry anthracnose crown rot caused by Colletotrichum siamense in New England https://doi.org/10.1094/PDIS-04-24-0935-PDN
First report of leaf spot caused by Paramyrothecium roridum on Coffea arabica in Hawai‘i, U.S.A. https://doi.org/10.1094/PDIS-04-24-0746-PDN
First report of cacao mild mosaic virus associated with cacao (Theobroma cacao) in Hawai‘i, U.S.A. https://doi.org/10.1094/PDIS-07-24-1517-PDN
First report of tomato ringspot virus infection of Krymsk 86 (Prunus cerasifera × P. persica), a hybrid rootstock, in California https://doi.org/10.1094/PDIS-09-24-1894-PDN
Field crops, cannabis, sugar beet, potato, sunflower:
First report of the barley root-knot nematode, Meloidogyne naasi, from Pennsylvania, with new host report https://doi.org/10.1094/PDIS-02-24-0384-PDN
First report of triticum mosaic virus infecting oat crop in the United States https://doi.org/10.1094/PDIS-04-24-0754-PDN
First report of Pantoea ananatis causing leaf streak disease on wheat (Triticum aestivum) in the United States of America https://doi.org/10.1094/PDIS-04-24-0903-PDN
First report of two Pantoea species causing bacterial leaf blight on wheat in the United States https://doi.org/10.1094/PDIS-05-24-1103-PDN First report of Xanthomonas euvesicatoria pv. sesami causing leaf spot on sesame (Sesamum indicum) in South Carolina, U.S.A. https://doi.org/10.1094/PDIS-05-24-0958-PDN
First report of Fusarium luffae causing soybean wilt in the United States https://doi.org/10.1094/PDIS-03-24-0556-PDN
First report of Medicago trirhavirus 1 infecting alfalfa in Washington State, U.S.A. https://doi.org/10.1094/PDIS-05-24-1132-PDN
First report of Rhizopus arrhizus (syn. R. oryzae) causing sunflower head rot in Arizona, U.S.A. https://doi.org/10.1094/PDIS-01-24-0099-PDN
The first report of cotton leafroll dwarf virus infecting upland cotton plants in Arizona https://doi.org/10.1094/PDIS-04-24-0928-PDN
First report of ergot caused by Claviceps clavispora in switchgrass (Panicum virgatum L.) in Georgia, USA https://doi.org/10.1094/PDIS-07-24-1532-PDN
First report of potato pink rot caused by Phytophthora erythroseptica in Colorado https://doi.org/10.1094/PDIS-08-24-1612-PDN
