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Phytopathology® @phytopathology.bsky.social · 1d

“Overexpression of α-SNAPRhg1 Can Improve rhg1-a-Mediated Soybean Resistance to Soybean Cyst Nematode,” by Deepak Haarith et al. Available open access in Phytopathology, Volume 115, Number 9: https://doi.org/10.1094/PHYTO-02-25-0077-R

Fig. 4.
Protein abundance immunoblots for 7 days postinoculation (dpi) samples of soybean cyst nematode (SCN)-infested root zones or similar areas from noninfested samples from same experiment as in Figure 3. The affinity-purified polyclonal antibodies raised against α-SNAPRhg1HC C-terminus peptide cross-react with the α-SNAPRhg1LC protein but not the Wm82 α-SNAPRhg1WT, whereas antibodies against α-SNAPRhg1LC C-terminus peptide are specific for the α-SNAPRhg1LC protein. Experiments used pooled samples of three roots each, separately for Set 1 and Set 2 seedlings. Similarity of total protein loading confirmed by Ponceau staining (Supplementary Fig. S4). Noncropped images for all blots shown are presented in Supplementary Figure S5.

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Phytopathology® @phytopathology.bsky.social · 3d

Nabin Poudel et al. conducted the first comprehensive evaluation of fluazaindolizine, fluensulfone, fluopyram, and oxamyl on motility, reproduction, and egg hatching in various root-knot nematode species.🪱 Learn more: https://doi.org/10.1094/PHYTO-01-25-0028-R

Differential Response of Meloidogyne enterolobii, M. floridensis, M. haplanaria, and M. incognita to Sublethal Doses of Nonfumigant Nematicides | Phytopathology®

Root-knot nematodes (RKNs; Meloidogyne spp.) are among the most widespread and damaging plant-parasitic nematodes known. Although M. incognita is the most prevalent RKN species, other species, including M. enterolobii, M. floridensis, and M. haplanaria,...

doi.org

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Phytopathology® @phytopathology.bsky.social · 7d

Editor’s Pick: “Spinetoram, a Widely Used Insecticide, Demonstrates Strong Antifungal Activity and a Novel Antifungal Mechanism Against Gray Mold for the First Time,” by Ting Luo et al.: https://doi.org/10.1094/PHYTO-03-25-0102-R

Fig. 3.
Scanning electron microscopy of Botrytis cinerea strain CGMCC3.20932 hyphae treated with spinetoram.

Phytopathology® @phytopathology.bsky.social · 9d

Editor’s Pick: Brandon G. Roy et al. present a first report of a soilborne virus modifying both the RSA of a plant host and transmission by its dagger nematode via a single viral amino acid. Read the open access article: https://doi.org/10.1094/PHYTO-03-25-0105-R

Fig. 6.
Possible role of modified root system architecture (RSA) traits of Nicotiana benthamiana in grapevine fanleaf virus (GFLV) transmission by Xiphinema index. Asymptomatic GFLV strains sustain normal RSA, similar to that of noninfected plants, and provide optimal conditions for transmission with large and overlapping root networks. This scenario applies to wild-type GFLV-F13 and mutant GFLV-GHu 1EK802G. Symptomatic GFLV strains elicit perturbations in total root length, root surface area, and root tip number to reduce transmission due to short and non-overlapping root networks. This scenario applies to wild-type GFLV-GHu and mutant GFLV-F13 1EG802K.

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Phytopathology® @phytopathology.bsky.social · 10d

Feng Zhou et al. provide new insight into potential trifloxystrobin resistance mechanisms in Fusarium oxysporum, as well as data that might improve fungicide strategies for more effective control of melon #Fusarium wilt in the field. Learn more: https://doi.org/10.1094/PHYTO-07-24-0213-R 🍈

Trifloxystrobin Resistance Mechanisms in Fusarium oxysporum f. sp. melonis | Phytopathology®

Melon Fusarium wilt (MFW) is a soilborne disease caused by the ascomycete fungus Fusarium oxysporum f. sp. melonis (Fom), which causes serious damage throughout the entire growth cycle of its hosts. However, the novel strobilurin fungicide, trifloxystro...

doi.org

Phytopathology® @phytopathology.bsky.social · 17d

Xiaojuan He et al. identified 736 RLKs, 407 RLPs, and 870 NLRs in the #alfalfa genome and determined that single-gene duplication events were the main drivers of gene family evolution. Learn more: https://doi.org/10.1094/PHYTO-12-24-0408-R

Phenotype and trypan blue analysis of the control (GFP, empty vector [EV]) and overexpression group (MsRLK725, OE) after inoculation with Rhizoctonia solani (top) and Phoma medicaginis (bottom) for 3 days.

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Phytopathology® @phytopathology.bsky.social · 21d

Mehdi Kamali Dashtarzhaneh et al. developed a novel LAMP assay and compared detection results with ddPCR for avocado sunblotch viroid. Both outperformed RT-LAMP, offering sensitive, reliable tools for early viroid detection and improved disease management. https://doi.org/10.1094/PHYTO-02-25-0064-R

Fig. 1.
A, Distribution of avocado samples collected from Southern California avocado orchards. The Southern California map was obtained from the California State Association of Counties 2024. Green dots represent avocado sunblotch viroid (ASBVd)-infected trees and surrounding trees tested in blocks. The right box shows a testing block containing symptomatic infected trees (red) and surrounding trees (green). B, ASBVd symptoms on avocado trees. a, Sunken yellow lesions. b, Purple lesions and blotches on the avocado fruit surface. c, Leaf discoloration and distortion with reduced size. d, Narrow streaks of discoloration and indentation on the branch surface. e, Rectangular cracking of the bark on the trunk, which is referred to as “alligator bark.”

Phytopathology® @phytopathology.bsky.social · 22d

Phyllachora maydis is an emerging disease in the United States and Canada. @CheckJill et al. described the environmental drivers of spore release and dispersal to fill current knowledge gaps in the tar spot disease cycle. 🌽 @MartinChilvers1 Learn more: https://doi.org/10.1094/PHYTO-01-25-0027-R

Unraveling the Environmental Drivers of Phyllachora maydis Spore Release and Dispersal Using Spore Trapping and qPCR | Phytopathology®

Phyllachora maydis, the causal agent of tar spot of corn, is an emerging disease in the United States and Canada. This study aimed to improve our understanding of P. maydis spore release and dispersal by utilizing spore trapping and quantitative PCR to ...

doi.org

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Larry Madden @thelarrymadden.bsky.social · 26d

A must read for every plant pathologist. Highlights some of the monumental research contributions in our field.

More reason to publish your work in Phytopathology.

Phytopathology® @phytopathology.bsky.social · 27d

NEW: "Landmarks in Phytopathology" celebrates influential research that has helped to shape the field of plant pathology. This virtual issue features seminal studies and thoughtful reflections from authors and senior editors. Explore it here: apsjournals.apsnet.org/landmarksphyto

Landmarks in Phytopathology: A Virtual Issue

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Phytopathology® @phytopathology.bsky.social · 27d

NEW: "Landmarks in Phytopathology" celebrates influential research that has helped to shape the field of plant pathology. This virtual issue features seminal studies and thoughtful reflections from authors and senior editors. Explore it here: apsjournals.apsnet.org/landmarksphyto

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Morgan Carter @morgancarterphd.bsky.social · Aug 4

For those at home, here is a recent @phytopathology.bsky.social study by Wilson and colleagues

apsjournals.apsnet.org/doi/abs/10.1... Characterization of Three Resistance-Breaking Isolates of Sugarcane Mosaic Virus from Rwanda and Implications for Maize Lethal Necrosis | Phytopathology®

Characterization of Three Resistance-Breaking Isolates of Sugarcane Mosaic Virus from Rwanda and Implications for Maize Lethal Necrosis | Phytopathology®

Maize lethal necrosis (MLN) is a devastating disease of maize caused by synergy between two viruses: maize chlorotic mottle virus (MCMV) and a potyvirus, often sugarcane mosaic virus (SCMV). Throughou...

apsjournals.apsnet.org

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Morgan Carter @morgancarterphd.bsky.social · Aug 4

Relevant @phytopathology.bsky.social paper:

apsjournals.apsnet.org/doi/10.1094/... Reclassification and Pathogenesis of Clavibacter Species: A Model Pathogen for Studying the Molecular Interactions Between Gram-Positive Bacteria and Plants | Phytopathology®

Reclassification and Pathogenesis of Clavibacter Species: A Model Pathogen for Studying the Molecular Interactions Between Gram-Positive Bacteria and Plants | Phytopathology®

Phytopathogenic bacteria of the genus Clavibacter cause severe yield loss, resulting in significant economic damage to various commercial crops worldwide. These bacteria pose a significant risk to glo...

apsjournals.apsnet.org

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Morgan Carter @morgancarterphd.bsky.social · Aug 4

I love it when I get to plug society journal articles related to talks I am posting about! Back to back @phytopathology.bsky.social studies in the Genomics session at #PlantHealth2025.

Support nonprofit, high-standard journals that benefit our scientific societies and promote scientific integrity.

Morgan Carter @morgancarterphd.bsky.social · Aug 4

Srushtideep Angidi asks how we can use resistance to control Sclerotinia infection in 🌻.

A major disease in the US, initial wilting symptoms can be hard to ID and quantify.

Yet, host resistance is the important control strategy.

GWAS! Used a diverse pop to find resistance loci.
#PlantHealth2025

A man on a podium giving a talk with a slide indicating research questions about sunflower infection

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Morgan Carter @morgancarterphd.bsky.social · Aug 4

Relevant @phytopathology.bsky.social paper: apsjournals.apsnet.org/doi/abs/10.1...

Identification and Characterization of Cultivated Sunflower Lines with Basal Stalk Rot Resistance Against Diverse Sclerotinia sclerotiorum Isolates | Phytopathology®

Basal stalk rot (BSR) of cultivated sunflower (Helianthus annuus L.) is caused by the necrotrophic fungal pathogen Sclerotinia sclerotiorum (Lib) de Bary. This disease is economically significant and ...

apsjournals.apsnet.org

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David Cooke @llewelyn68.bsky.social · Jul 23

Pleased to publish a @phytopathology.bsky.social paper with West Bengal State University demonstrating seed tubers as source of #lateblight #phytophthora epidemics in the Indian plains.
apsjournals.apsnet.org/doi/epdf/10....

Author's image of peeled potato tuber showing early infection of Phytophthora infestans, the cause of potato late blight. Tracking of mycelial progress through tuber visible by potato resistance reaction.

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Samuel Soubeyrand @ssoubeyrand.bsky.social · Jun 17

Which model should be used? Which explanatory variables should be selected?... Let's use a model ensemble instead of a single model to characterize and predict spatio-temporal disease distributions. Read our ms in @phytopathology.bsky.social with application to virus yellows doi.org/10.1094/PHYT...

mportance of variables. Top left: Matrix of correlations between the weighted meansof standardized importance values computed for each model family. Top right: Percentage of to-tal importance computed for each variable classiﬁed in variable types (the horizontal dashed lineshows the threshold we considered for selecting the 14 retained important variables). Bottom:Cumulated percentage of total importance computed for each variable with respect to variabletypes. In the bottom panel, the noticeable information is given by the heights (and colors) ofthe bottom slices in each bar (for each variable type, variables are ordered from bottom to topwith respect to importance value). The total height of the bar for each variable type is largelycorrelated with the number of variables included in it and does not bring important information.

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Samuel Soubeyrand @ssoubeyrand.bsky.social · Jun 11

Take a First Look at the paper about "Opportunities and Challenges in Combining Optical Sensing and Epidemiological Modelling" by Alexey Mikaberidze et al., very recently published in @phytopathology.bsky.social: doi.org/10.1094/PHYT...

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Phytopathology® @phytopathology.bsky.social · May 19

Editor’s Pick! Sahar Abdelrazek, Lina Rodriguez Salamanca, and Boris A. Vinatzer used long-read metagenomics to ID pathogens directly from tomato stems to the strain level, with resistance data and global context—all in just 2 days. doi.org/10.1094/PHYT...

Circular map, Pseudomonas corrugata metagenome-assembled genome (MAG) VA94.

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Phytopathology® @phytopathology.bsky.social · Apr 24

New risk maps developed by Sandip Mondal, @mycomile.bsky.social, Horacio Lopez-Nicora, and others, help soybean farmers spot charcoal rot before it strikes. 🫛 Read the press release: www.apsnet.org/about/newsro...

Read the original article in Phytopathology: doi.org/10.1094/PHYT...

Interpolated maps of colony-forming unit (CFU) abundance of Macrophomina phaseolina (Mp) using A, ordinary kriging and B, co-kriging, respectively. Both interpolated surfaces were generated from the observed 297 sampling locations across seven departments of the country (see Figure 1 for more details). The gradient color from red to blue depicts high to low abundance of Mp.

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Phytopathology® @phytopathology.bsky.social · Mar 21

Robbert van Himbeeck et al. investigated whether chlorophyll fluorescence could be suitable as a rapid, nondestructive method for early potato cyst nematode detection. 🥔 Learn more: doi.org/10.1094/PHYT... @jaapjanwillig.bsky.social

The impact of nematode inoculation on classical plant performance indicators. A, The effect of nematode inoculation on dry shoot biomass, dry root biomass, and root surface area at 26 days postinoculation (DPI) for each potato cyst nematode (PCN) inoculation density. The asterisks indicate significant differences (Wilcoxon rank-sum test) of the inoculated plants compared with the uninoculated control (0 eggs per gram of soil) (ns = P > 0.05, * = P < 0.05, ** = P < 0.01, and *** = P < 0.001). B, Cleaned and dried root systems of five representative plants for each inoculation density.

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Niklaus Grunwald @grunwald.bsky.social · Mar 12

Our community consensus position on conserving the genus #Phytophthora: Preserving the Biologically Coherent Generic Concept of Phytophthora, ‘Plant Destroyer’ | Phytopathology® apsjournals.apsnet.org/doi/10.1094/...

Preserving the Biologically Coherent Generic Concept of Phytophthora, ‘Plant Destroyer’ | Phytopathology®

Phytophthora is a long-established, well known and globally important genus of plant pathogens. Phylogenetic evidence has shown that the biologically distinct, obligate biotrophic downy mildews evolve...

apsjournals.apsnet.org

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Phytopathology® @phytopathology.bsky.social · Feb 25

Robert R. Krueger et al. modified the pT36CA-V1.3 citrus tristeza virus vector for gene silencing in California citrus. Modified vectors T36CA-V1.4 and -V1.5 showed higher accumulation in C. macrophylla at 8–12 months. Learn more: doi.org/10.1094/PHYT...

Green fluorescent protein (GFP) expression in the systemic leaves of N. benthamiana plants inoculated with Agrobacterium harboring the vector constructs pT36CA-V1.3, -V1.4, or -V1.5. An uninfected leaf (with no GFP signals) taken from an uninoculated N. benthamiana plant is shown for comparison. Images were taken under an ultraviolet lamp using newly emerged leaves that had fully expanded at 5 weeks postinoculation.

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Centre for Crop and Disease Management @theccdm.bsky.social · Feb 21

🎉 Congrats to Leon Hodgson, Fran Lopez-Ruiz, Mark Gibberd, Geoff Thomas & @zerihuna.bsky.social on their @phytopathology.bsky.social Editor’s Pick! 🌾Their field trial on barley net blotch explored fungicide resistance spread💡
📖 https://buff.ly/42Xdbca
#GRDC #CurtinUni #DPIRD

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Phytopathology® @phytopathology.bsky.social · Feb 17

Lima beans, vital to Delaware's processing vegetable industry, face yield loss from root-knot nematodes. Eboni R. Traverso et al. identified DE1306635 as a top performer for yield and resistance and found seven promising sources for breeding. Learn more: doi.org/10.1094/PHYT...

Seed diversity of lima bean (Phaseolus lunatus) grown in Delaware. Morphologies shown include A, green baby lima varieties; B, Fordhook; and C, pole lima.

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Phytopathology® @phytopathology.bsky.social · Feb 11

Genetically modified (GM) papayas protect against papaya ringspot virus (PRSV), but papaya leaf distortion mosaic virus (PLDMV) is rising as a threat. Mu-Zhi Yang et al. found no difference in PRSV infection between GM and non-GM plants. Learn more: doi.org/10.1094/PHYT...

Feral papaya plants with severe disease symptoms along the roadside in Hainan.

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