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United States Department of Agriculture

Agricultural Research Service

Plant Pathogen Biology & Biosystematics
item Nematode suppression by endophyte-associated tall fescue (Aug 2014)
item Longevity of Puccinia horiana teliospores under various environmental conditions (Mar 2014)
item Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Mar 2014)
item Morel species Mel-19 – preliminary report (Feb 2014)
item A preliminary assessment of the true morels (Morchella) in Newfoundland and Labrador (Feb 2014)
item Mel-36 – preliminary description of a new morel species (Feb 2014)
item Use of gene sequence analyses and genome comparisons for yeast systematics (Feb 2014)
item Development of reverse transcription loop-mediated isothermal amplification assay for rapid detection of an emerging potyvirus: tomato necrotic stunt virus (Feb 2014)
item Molecular and biological properties of tomato necrotic stunt virus and development of a sensitive real-time RT-PCR assay (Feb 2014)
item Utilizing soybean milk to culture soybean pathogens (Jan 2014)
item The heterothallic sugarbeet pathogen Cercospora beticola contains exon fragments of both MAT genes that are homogenized by concerted evolution (Jan 2014)
item Characterization and quantification of fungal colonization of Phakopsora pachyrhizi in soybean genotypes (Jan 2014)
item Molecular characterization and detection of mutations associated with resistance to succinate dehydrogenase inhibiting (SDHI) fungicides in Alternaria solani (Jan 2014)
item Molecular basis of fungicide resistance in Cercospora beticola (Nov 2013)
item Genetic mechanisms of host-pathogen interactions for charcoal rot in soybean (Nov 2013)
item First evidence of a binucleate Rhizoctonia as the causal agent of dry rot canker of sugar beet in Nebraska, USA (Nov 2013)
item Molecular phylogenetic relationships of the brown leaf rust fungi on wheat, rye and other grasses (Nov 2013)
item Estimating soybean genetic gain for yield in the northern United States – Influence of cropping history (Nov 2013)
item Validation of ‘Variable Number of Tandem Repeat’ analysis and its applications for examination of ‘Candidatus Liberibacter asiaticus’ populations in areas of recent introduction (Nov 2013)
item Resistance to Ug99 stem rust in six bread wheat cultivars maps to chromosome 6DS (Oct 2013)
item Complete genome sequence of a new tobamovirus naturally infecting tomatoes in Mexico (Oct 2013)
item Description of Ambrosiozyma oregonensis sp. nov., and reassignment of Candida species of the Ambrosiozyma clade to Ambrosiozyma kashinagacola f.a., comb. nov., Ambrosiozyma llanquihuensis f.a., comb. nov., etc. (Oct 2013)
item Risk-based residential HLB/ACP survey for California, Texas and Arizona (Oct 2013)
item First report of Phakopsora pachyrhizi adapting to soybean genotypes with Rpp1 or Rpp6 rust resistance genes in field plots in the United States (Oct 2013)
item Phytophthora megakarya (Sep 2013)
item Pseudomonas-based approaches for suppression of soilborne pathogens and pests (Sep 2013)
item Registration of eight soybean germplasm lines resistant to soybean rust (Sep 2013)
item Understanding the genetic landscape of Puccinia graminis f. sp. tritici, from a global to country perspective (Sep 2013)
item Further Insights Into The Epidemiology And Monitoring Practices Of Tomato Viruses (Sep 2013)
item Wheatgrass-wheat partial amphiploids as a novel source of stem rust and Fusarium head blight resistance (Sep 2013)
item Glyceollin is an important component of soybean plant defense against Phytophthora sojae and Macrophomina phaseolina (Sep 2013)
item Effect of fungicide application and cultivar on soybean green stem disorder (Sep 2013)
item Pepino mosaic virus genotype shift in North America and rapid genotype identification using loop-mediated isothermal amplification (Aug 2013)
item Global virus survey in tomato using small RNA deep sequencing technology (Aug 2013)
item Challenges in developing phytochemicals for use as nematode management agents (Aug 2013)
item Sporulation capacity and longevity of Puccinia horiana teliospores in infected chrysanthemum leaves (Aug 2013)
item Characterization and detection of emerging viroids in North American greenhouse tomatoes (Aug 2013)
item Host factors governing resistance to Rhizoctonia solani (Aug 2013)
item Identification of the G143A mutation in cytochrome b associated with QoI resistance in Cercospora beticola isolates from the Red River Valley (Aug 2013)
item First report of Tomato chlorotic spot virus in tomato, pepper and jimsonweed in Puerto Rico (Aug 2013)
item Expression of germin-like protein genes in response to Sclerotinia homoeocarpa infection (Aug 2013)
item Development and validation of quantitative polymerase chain reaction protocols targeting the ‘L’, ‘M’, and ‘S’ ribonucleic acid of Soybean vein necrosis virus (Aug 2013)
item Molecular characterization and detection of Mexican papita viroid (Aug 2013)
item Environmental niche and temperature impact the role of Salmonella enterica diguanylate cyclases in plant colonization (Aug 2013)
item Extensive chromosomal reshuffling drives evolution of virulence in an asexual pathogen (Aug 2013)
item Seed transmission rates of Bean pod mottle virus and Soybean mosaic virus in soybean may be affected by mixed infection or expression of the Kunitz trypsin inhibitor (Aug 2013)
item Evidence for multiple introductions and clonality in Spanish populations of Fusarium circinatum (Aug 2013)
item Deciphering the bacterial microbiome of citrus plants in response to ‘Candidatus Liberibacter asiaticus’-infection and antibiotic treatment (Aug 2013)
item The Use of Latent Class Analysis to Estimate the Sensitivities and Specificities of Diagnostic Tests for Squash vein yellowing virus in Cucurbit Species (Aug 2013)
item Interactions with the actin cytoskeleton are required for cell wall localization of barley stripe mosaic virus TGB proteins (Jul 2013)
item Nematotoxicity of drupacine and a Cephalotaxus alkaloid preparation against the plant-parasitic nematodes Meloidogyne incognita and Bursaphelenchus xylophilus (Jul 2013)
item Screening selected Gulf Coast forest species for susceptibility to Phytophthora ramorum (Jul 2013)
item Possible role of the Nt-4/1 protein in macromolecular transport in vascular tissue (Jul 2013)
item Taxonomy and distribution of phenazine-1-carboxylic acid-producing Pseudomonas spp. in the dryland agroecosystem of the Inland Pacific Northwest (Jul 2013)
item Development and evaluation of a TaqMan Real-Time PCR assay for Fusarium oxysporum f. sp. spinaciae (Jul 2013)
item Pre-breeding for root rot resistance using root morphology and shoot length. (Jul 2013)
item Leaf rust resistance in selected Uruguayan late maturity common wheat cultivars (Jul 2013)
item Trapped intermediates in crystals of the FMN-dependent oxidase PhzG provide insight into the final steps of phenazine biosynthesis (Jul 2013)
item Progress on dissecting and controlling the citrus huanglongbing complex (Jul 2013)
item The intracellular citrus huanglongbing bacterium, ‘Candidatus Liberibacter asiaticus’ encodes two novel autotransporters (Jul 2013)
item 'Candidatus phytoplasma solani’, a novel taxon associated with stolbur and bois noir related diseases of plants (Jul 2013)
item Development and field evaluation of multiple virus-resistant bottle gourd (Lagenaria siceraria) (Jul 2013)
item Physiologic specialization of Puccinia triticina on wheat in the United States in 2011 (Jul 2013)
item Identification of wheat gene Sr35 that confers resistance to Ug99 stem rust race group (Jun 2013)
item Squash vein yellowing virus affecting watermelon in Puerto Rico (Jun 2013)
item Evaluation of disinfectants to control mechanical transmission of tomato viruses and viroids in greenhouse tomatoes (Jun 2013)
item Understanding the global distribution of tomato viruses and viroids using next-generation sequencing technology (Jun 2013)
item Developing hygiene protocols against mechanically transmitted pathogens in greenhouse tomato production systems (Jun 2013)
item Management of plant pathogens and pests using microbial biological control agents. In: Trigiano, R.N. and Ownley, B.H., editors. Plant Pathology Concepts and Laboratory Exercises (Jun 2013)
item First report of blackleg caused by Leptosphaeria maculans on canola in Idaho (Jun 2013)
item Genotypic diversity of Puccinia horiana based on newly identified molecular markers (Jun 2013)
item Impacts of the International Code of Nomenclature for algae, fungi and plants (Melbourne Code) on the scientific names of plant pathogenic fungi (Jun 2013)
item Proposal to conserve the name Phomopsis citri H.S. Fawc. (Diaporthe citri), with a conserved type, against Phomopsis citri (Sacc.) Traverso & Spessa (Ascomycota, Diaporthales, Diaporthaceae) (Jun 2013)
item Effects of frequency of extreme temperature highs on development of soybean rust (Jun 2013)
item First Detection of Puccinia hordei virulence to barley leaf rust resistance gene Rph3 and combination with virulence to Rph7 in North America (Jun 2013)
item Revision of the Genus Corallomycetella with Corallonectria gen. nov. for C. jatrophae (Nectriaceae, Hypocreales) (Jun 2013)
item A case study on discovery of novel Citrus leprosis virus cytoplasmic type 2 utilizing small RNA libraries by next generation sequencing and bioinformatic analyses (Jun 2013)
item The type III secreted effector DspE is required early in Solanum tuberosum leaf infection by Pectobacterium carotovorum to elicit cell death, and requires Wx(3-6)D/E motifs (Jun 2013)
item Characterization of the rust fungus, Puccinia emaculata, and evaluation of genetic variability for rust resistance in switchgrass populations (Jun 2013)
item Emergence and impact of two tospoviruses in Florida (Jun 2013)
item Implications Of Host Plant Resistance Against Whitefly-Transmitted Tomato Yellow Leaf Curl Virus In Tomato For Virus Epidemics And Management (Jun 2013)
item Rhizoctonia spp. dynamics and optimal timing of glyphosate application to cereal cover crops to manage onion stunting in Washington and Oregon (Jun 2013)
item Identification of resistance to Rhizoctonia root rot in mutant and wild barley (Hordeum vulgare subsp. spontaneum) (Jun 2013)
item A new nematode genus Rugoster (Leptolaimina: Chronogastridae), with descriptions of six new species (Jun 2013)
item Pathogenicity and control of Heterodera schachtii and Meloidogyne spp. on some cruciferous plant cultivars (Jun 2013)
item Host status of barley to Puccinia coronata from couch grass and P. striiformis from wheat and brome (Jun 2013)
item The history of the USDA Nematode Collection and its database: valuable resources for taxonomic research and identification (Jun 2013)
item The impact of culture collections on molecular identification, taxonomy, and solving real problems (May 2013)
item Considerations of scale in the analysis of spatial pattern of plant disease epidemics (May 2013)
item Culture Collections and Public Health Research (May 2013)
item Overview of the ARS Culture Collection (May 2013)
item Data management and database structure at the ARS Culture Collection (May 2013)
item Visualization of ‘Ca. Liberibacter asiaticus’ cells in the vascular bundle of citrus seed coats with fluorescence in situ hybridization and transmission electron microscopy (May 2013)
item First report of soybean vein necrosis disease caused by soybean vein necrosis-associated virus in Wisconsin and Iowa (May 2013)
item Spring wheat tolerance and resistance to Heterodera avenae in the Pacific Northwest (May 2013)
item Storage and processing evaluation of advanced potato breeding clones (May 2013)
item A real-time PCR assay for early detection of eastern filbert blight (May 2013)
item Cellular development associated with induced secondary metabolism in the filamentous fungus Fusarium graminearum (May 2013)
item Habitat and host indicate lineage identity in Colletotrichum gloeosporioides s.l. from wild and agricultural landscapes in North America (May 2013)
item Identification of fungi on diseased soybean seeds harvested during a high rainfall period in Mato Grosso do Sul, Brazil (May 2013)
item Take-all of Wheat and Natural Disease Suppression: A Review (May 2013)
item First report of soybean vein necrosis-associated virus in Ohio soybean fields (May 2013)
item A public program to evaluate commercial soybean cultivars (May 2013)
item Taiwanascus samuelsii sp. nov., an addition to Niessliaceae from the Western Ghats, Kerala, India (Apr 2013)
item Pepino mosaic virus genotype shift in North America and development of a loop-mediated isothermal amplification for rapid genotype identification (Apr 2013)
item Evaluation of Brassica species for resistance to Rhizoctonia solani and binucleate Rhizoctonia (Ceratobasidium spp.) under controlled environment conditions (Apr 2013)
item Inoculum density relationships for infection of some Eastern forest species by Phytophthora ramorum (Apr 2013)
item Pseudocosmospora, a new genus to accommodate Cosmospora vilior and related species (Apr 2013)
item Real-time monitoring of the extracellular redox potential of cell suspensions during plant/bacterial interactions (Apr 2013)
item Host suitability of some Poaceous crop cultivars for Heterodera goldeni (Apr 2013)
item Characterization and molecular differentiation of 16SrI-E and 16SrIX-E phytoplasmas associated with blueberry stunt disease in New Jersey (Apr 2013)
item Identification of resistance to races of Puccinia graminis f. sp. tritici with broad virulence in triticale (X Triticosecale) (Apr 2013)
item Development of COS-SNP and HRM markers for cost efficient and reliable haplotype-based detection of Lr14a in durum wheat (Triticum durum Desf.) (Apr 2013)
item Effects of catechin polyphenols and preparations from the plant-parasitic nematode Heterodera glycines on protease activity and behavior in three nematode species (Mar 2013)
item Diversity in production of xyaln-degrading enzymes among species belonging to the Trichoderma section Longibrachiatum (Mar 2013)
item Physiological effects of Squash vein yellowing virus infection on watermelon (Mar 2013)
item Squash vein yellowing virus infection of vining cucurbits and the vine decline response (Mar 2013)
item Tall fescue ‘Jesup (Max-Q)’: Meloidogyne incognita development in roots and nematotoxicity (Mar 2013)
item Recent Insights into the Diversity, Frequency and Ecological Roles of Phenazines in Fluorescent Pseudomonas spp. (Mar 2013)
item Yield responses of three onion cultivars to stunting caused by Rhizoctonia spp. in the Columbia Basin of Oregon and Washington, 2012. (Mar 2013)
item Efficacy of fungicides to manage onion stunting caused by Rhizoctonia spp. in the Columbia Basin of Oregon and Washington, 2011-2012 (Mar 2013)
item Effect of timing of glyphosate application to a winter wheat cover crop on stunting of spring-sown onions caused by Rhizoctonia spp. in the Columbia Basin of Washington, 2012. (Mar 2013)
item The 2009 late blight pandemic in eastern USA – causes and results (Mar 2013)
item Infection of Brachypodium distachyon by formae speciales of Puccinia graminis: early infection events and host-pathogen incompatibility (Feb 2013)
item A previously undescribed potyvirus isolated and characterized from arborescent Brugmansia (Feb 2013)
item Phomopsis bougainvilleicola prepatellar bursitis in a renal transplant recipient (Feb 2013)
item Synthetic peptides target ATP translocase of ‘Candidatus Liberibacter asiaticus’ to block ATP uptake (Feb 2013)
item Visualization of ‘Candidatus Liberibacter asiaticus’ cells in citrus seed coats with fluorescence in situ hybridization and transmission electron microscopy (Feb 2013)
item First Report of Garlic Rust Caused by Puccinia allii on Allium sativum in Minnesota (Feb 2013)
item First Report of Veronica Rust by Puccinia veronicae-longifoliae in Minnesota on Veronica spicata Royal Candles (Feb 2013)
item Role of gibberellic acid in tomato defense response to potato purple top phytoplasma infection (Feb 2013)
item Metabolites may reveal attack strategy of the microbe causing HLB (Feb 2013)
item Colonization of seeds of citrus rootstock varieties by ‘Ca. Liberibacter asiaticus’ (Feb 2013)
item Insights into Alternanthera mosaic virus TGB3 functions: Interactions with Nicotiana benthamiana PsbO correlate with chloroplast vesiculation and veinal necrosis caused by TGB3 overexpression (Jan 2013)
item Development and characterization of a compensating wheat-Thinopyrum intermedium Robertsonian translocation with Sr44 resistance to stem rust (Ug99) (Jan 2013)
item Can Epiphytes reduce disease symptoms caused by Phytophthora ramorum (Jan 2013)
item Identification of Phytophthora species baited and isolated from forest soil and streams in northwestern Yunnan province, China (Jan 2013)
item Leaf rust of wheat: Pathogen biology, variation and host resistance (Jan 2013)
item Genome-assisted development of nuclear intergenic sequence markers for entomopathogenic fungi of the Metarhizium anisopliae species complex (Jan 2013)
item Characterization of the microbial community structure in Candidatus Liberibacter asiaticus-infected citrus plants treated with antibiotics in the field (Jan 2013)
item First report of Nerine yellow stripe virus in Amaryllis in the United States (Jan 2013)
item First report of potato spindle tuber viroid naturally infecting greenhouse tomatoes in North Carolina (Jan 2013)
item Potato purple top phytoplasma-induced disruption of gibberellin homeostasis in tomato plants (Jan 2013)
item Heat treatment eliminates ‘Candidatus Liberibacter asiaticus’ from infected citrus trees under controlled conditions (Jan 2013)
item Bipolaris microstegii Minnis, Rossman, Kleczewki & S.L. Flory, sp. nov. (Dec 2012)
item Valsalnicola D. Walker & Rossman, gen. nov. (Dec 2012)
item Development and systematic validation of qPCR assays for rapid and reliable differentiation of Xylella fastidiosa strains causing citrus variegated chlorosis (Dec 2012)
item A novel emerging virus with indistinguishable symptoms and genome structure similar to citrus leprosis virus C identified by small RNA deep sequencing (Dec 2012)
item Observations on the foliar nematode, Aphelenchoides besseyi, infecting tuberose and rice in India (Dec 2012)
item First report of Alfalfa mosaic virus and Soybean dwarf virus on soybean in North Dakota (Dec 2012)
item Root-knot nematodes (Nov 2012)
item What lies beneath, unraveling the mysteries of Rhizoctonia and Pythium (Nov 2012)
item Hyaloperonospora camelinae on Camelina sativa (L.) in Washington State: Detection, seed transmission, and chemical control (Nov 2012)
item Self-inhibition of spore germination via reactive oxygen in the fungus Cladosporium cucumerinum, causal agent of cucurbit scab (Nov 2012)
item Leaf endophyte load and fungal garden development in leaf-cutting ants (Nov 2012)
item Phylogeny and taxonomic revision of the Planistromellaceae including its coelomycetous anamorphs: contributions towards a monograph of the genus Kellermania (Oct 2012)
item Identification of Anguina funesta from annual ryegrass (Lolium multiflorum) seed lots in Oregon (Oct 2012)
item Inoculation Methods to Assay Wheat Seedlings for Resistance to Fusarium Crown Rot in a Controlled Environment (Oct 2012)
item Molecular and biological characterization of Mexican papita viroid (Oct 2012)
item Identification of Potato spindle tuber viroid naturally infecting greenhouse tomatoes in North Carolina and its potential in seed transmission (Oct 2012)
item Sensitivity of mechanically transmitted pathogens to different disinfectants (Oct 2012)
item Ecology and Management of Whitefly-Transmitted Vegetable Viruses in the Southeastern United States (Oct 2012)
item Virulence of Puccinia triticina in Turkey and leaf rust resistance in Turkish wheat cultivars (Oct 2012)
item Confirmation of hybrid origin of Cyrtanthus based on the sequence analysis of internal transcribed spacer (Oct 2012)
item First report of Colletotrichum chlorophyti causing soybean anthracnose (Oct 2012)
item Groundnut ringspot virus and tomato spotted wilt virus – Tospoviruses in Florida (Sep 2012)
item First report of Soybean Rust (Phakopsora pachyrhizi) on Florida Beggarweed (Desmodium tortuosum) in Alabama (Sep 2012)
item Complete genome sequence of a novel pararetrovirus isolated from soybean (Sep 2012)
item Development of a molecular assay system for the rapid detection and identification of Ug99 and related races of Puccinia graminis (Aug 2012)
item Epistatic adult plant resistance in wheat to stem rust cosegregates with Sr12 seedling resistance (Aug 2012)
item Evaluation of a SNP-based qPCR identification system for the Ug99 race group using field collections of Puccinia graminis f. sp. tritici in South Africa (Aug 2012)
item Molecular Characterization of wheat stem rust races in Kenya (Aug 2012)
item Analysis of genetic diversity within the Puccinia graminis Ug99 race group using SNP based markers (Aug 2012)
item Puccinia hordei isolates with virulence to both Rph3 and Rph7 detected in the United States (Aug 2012)
item The 2009 late blight pandemic in eastern USA (Aug 2012)
item PCR assays for diagnosis of postharvest fruit rots and early detection of Phacidiopycnis washingtonensis and Sphaeropsis pyriputrescens in apple fruit (Aug 2012)
item Association of ‘Candidatus Liberibacter asiaticus’, the causal agent of citrus huanglongbing in Murraya paniculata and Diaphorina citri in Thailand (Aug 2012)
item Phylogeny and taxonomy of Ophiognomonia (Gnomoniaceae, Diaporthales), including twenty-five new species in this highly diverse genus (Jul 2012)
item The plant-parasitic nematode collections of RRIP: The realization of an ISTC project (Jul 2012)
item Study on plant endophyte PLFAs polymorphism in different spatial of citrus HLB (huanglongbing) (Jul 2012)
item The destructive citrus pathogen, ‘Candidatus Liberibacter asiaticus’ encodes a functional flagellin characteristic of a pathogen-associated molecular pattern (Jul 2012)
item EcpA, an extracellular protease, is a specific virulence factor required by Xanthomonas oryzae pv. oryzicola but not by X. oryzae pv. oryzae in rice (Jul 2012)
item Three improved Citrullus lanatus var. citroides lines USVL246-FR2, USVL252-FR2, and USVL335-FR2, with resistance to Fusarium oxysporum f. sp. niveum race 2 (Jul 2012)
item Diversity of the citrus HLB bacterium, ‘Candidatus Liberibacter asiaticus’, in psyllids (Diaphorina citri) collected from Murraya paniculata and citrus spp. in Thailand (Jul 2012)
item Natural suppression of Rhizoctonia root rot by soil microbial communities in wheat from a Rhizoctonia decline site. (Jul 2012)
item Detection, seed transmission, and control of Hyaloperonospora camelinae on Camelina sativa (L.) in Washington State (Jul 2012)
item Factors impacting the activity of 2,4-diacetylphloroglucinol-producing Pseudomonas fluorescens against take-all of wheat (Jun 2012)
item Structure and function of indigenous antibiotic-producing microbial communities in the rhizosphere of wheat (Jun 2012)
item Camelina Production in the Dryland Pacific Northwest (Jun 2012)
item Two plant bacteria, S. meliloti and Ca. Liberibacter asiaticus, share functional znuABC homologues that encode for a high affinity Zinc uptake system (May 2012)
item Inheritance of resistance to Ug99 stem rust in wheat cultivar Norin 40 and genetic mapping of Sr42 (May 2012)
item Biology and pathology of turfgrass anthracnose (May 2012)
item The Role of 2,4-diacetylphloroglucinol- and phenazine-1-carboxylic acid-producing Pseudomonas spp. in Natural Protection of Wheat from Soilborne Pathogens (Apr 2012)
item Colonizing ability of Pseudomonas fluorescens 2112, among collections of 2,4-diacetylphloroglucinol-producing Pseudomonas fluorescens spp. in pea rhizosphere. (Apr 2012)
item Estimating the spatial distribution of a plant disease epidemic when it is first discovered and the design of early detection monitoring (Mar 2012)
item Population structure and diversity of phenazine-1-carboxylic acid producing fluorescent pseudomonas spp. from dryland cereal fields of central Washington State (U.S.) (Mar 2012)
item Irrigation differentially impacts populations of indigenous antibiotic-producing Pseudomonas spp. in the rhizosphere of wheat (Mar 2012)
item Characterization of the in vitro activities of the P1 and helper component proteases of Soybean mosaic virus Strain G2 and Tobacco vein mottling virus (Feb 2012)
item Accumulation of the Antibiotic Phenazine-1-Carboxylic Acid in the Rhizosphere of Dryland Cereals (Feb 2012)
item The community structure of endophytic bacteria in different parts of Huanglongbing-affected citrus plants (Dec 2011)
item Effects of Traditional and New Agricultural Practices on Pathogen and Biological Control Agents Populations and on Soil Suppressiveness (Dec 2011)
Last Modified: 9/20/2013
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