Virulence Differences in Blumeria graminis f. sp. tritici from the Central and Eastern United States.

abstract：:Pierce's disease (PD) of Vitis vinifera grapevines is caused by the bacterium Xylella fastidiosa, a pathogen with a wide plant host range. Exposure of X. fastidiosa-infected plant tissue to cold temperatures has been shown to be effective at eliminating the pathogen from some plant hosts such as grapevines. This "cold...

journal_title：Phytopathology

authors： Lieth JH,Meyer MM,Yeo KH,Kirkpatrick BC

更新日期：2011-12-01 00:00:00

abstract：:Trichoderma gamsii T6085 was used in combination with a Fusarium oxysporum isolate (7121) in order to evaluate, in a multitrophic approach, their competitive ability against F. graminearum, one of the main causal agents of Fusarium head blight (FHB) on wheat. The two antagonists and the pathogen were coinoculated on t...

journal_title：Phytopathology

authors： Sarrocco S,Valenti F,Manfredini S,Esteban P,Bernardi R,Puntoni G,Baroncelli R,Haidukowski M,Moretti A,Vannacci G

更新日期：2019-04-01 00:00:00

abstract：:ABSTRACT Double-stranded RNA (dsRNA) was purified from grapevines infected with grapevine leafroll-associated viruses 4 (GLRaV-4) and 5 (GLRaV-5), two putative closteroviruses. Reverse-transcriptase polymerase chain reaction (RT-PCR) was performed on this dsRNA using degenerate oligonucleotides designed to amplify an ...

journal_title：Phytopathology

authors： Routh G,Zhang YP,Saldarelli P,Rowhani A

更新日期：1998-11-01 00:00:00

abstract：:Reniform nematode (RN) is an important pest in cotton production. Knowledge of the distribution patterns of RN is essential for selecting sampling strategies and for site-specific management. A 3-year study was conducted in two fields in South Carolina with the purpose of characterizing the distribution of RN using a ...

journal_title：Phytopathology

authors： Holguin CM,Gerard P,Mueller JD,Khalilian A,Agudelo P

更新日期：2015-05-01 00:00:00

abstract：:ABSTRACT The role of riboflavin as an elicitor of systemic resistance and an activator of a novel signaling process in plants was demonstrated. Following treatment with riboflavin, Arabidopsis thaliana developed systemic resistance to Peronospora parasitica and Pseudomonas syringae pv. Tomato, and tobacco developed sy...

journal_title：Phytopathology

authors： Dong H,Beer SV

更新日期：2000-08-01 00:00:00

abstract：:ABSTRACT Pyrenophora teres, the causal agent of net blotch of barley (Hordeum vulgare L.), induces a combination of necrosis and extensive chlorosis in susceptible barley cultivars. Cell-free filtrates from both net and spot forms of P. teres; P. teres f. sp. teres, and P. teres f. sp. maculata were found to contain p...

journal_title：Phytopathology

authors： Sarpeleh A,Wallwork H,Catcheside DE,Tate ME,Able AJ

更新日期：2007-08-01 00:00:00

abstract：:ABSTRACT Seed certification and the use of cultivars containing one of two, probably allelic, recessive genes, mo1(1) and mo1(2), are the principal control methods for Lettuce mosaic virus (LMV) in lettuce. Although for a few LMV isolates, mo1(2) confers resistance with most isolates, the genes mo1(1) or mo1(2) confer...

journal_title：Phytopathology

authors： Candresse T,Le Gall O,Maisonneuve B,German-Retana S,Redondo E

更新日期：2002-02-01 00:00:00

abstract：:ABSTRACT Amplified fragment length polymorphisms (AFLPs) were used to estimate phylogenetic relationships within Magnaporthe grisea and determine the genetic structure of M. grisea populations associated with tall fescue and St. Augustinegrass in Georgia. Sixteen clonal lineages were identified in a sample population ...

journal_title：Phytopathology

authors： Tredway LP,Stevenson KL,Burpee LL

更新日期：2005-05-01 00:00:00

abstract：:ABSTRACT Recent reports have shown induction of resistance to Rhizoctonia root rot using nonpathogenic strains of binucleate Rhizoctonia spp. (np-BNR). This study evaluates the biocontrol ability of several np-BNR isolates against root and foliar diseases of cotton in greenhouse trials, provides evidence for induced s...

journal_title：Phytopathology

authors： Jabaji-Hare S,Neate SM

更新日期：2005-09-01 00:00:00

abstract：:The rice blast resistance gene Pid3 encodes a nucleotide-binding-site leucine-rich repeat (NBS-LRR) protein. This gene was cloned from the rice 'Digu' (indica) by performing a genome-wide comparison of the NBS-LRR gene family between two genome-sequenced varieties, '9311' (indica) and 'Nipponbare' (japonica). In this ...

journal_title：Phytopathology

authors： Lv Q,Xu X,Shang J,Jiang G,Pang Z,Zhou Z,Wang J,Liu Y,Li T,Li X,Xu J,Cheng Z,Zhao X,Li S,Zhu L

更新日期：2013-06-01 00:00:00

abstract：:ABSTRACT One of the major concerns with Fusarium head blight (FHB) of barley is the potential health risks to livestock and humans through the accumulation of the mycotoxin deoxynivalenol (DON) in infected grain. To define the role of the host in DON accumulation during the early stages of disease development, we cond...

journal_title：Phytopathology

authors： Smith KP,Evans CK,Dill-Macky R,Gustus C,Xie W,Dong Y

更新日期：2004-07-01 00:00:00

abstract：:Pantoea agglomerans strain E325, a commercially available antagonist for fire blight of apple and pear, was originally selected through screening based on suppression of Erwinia amylovora on flower stigmas, but specific mechanisms of antagonism were unknown. Bacterial modification of pH was evaluated as a possible mec...

journal_title：Phytopathology

authors： Pusey PL,Stockwell VO,Rudell DR

更新日期：2008-10-01 00:00:00

abstract：:The soilborne fungus Rhizoctonia solani anastomosis group 3 (AG-3PT) is a globally important potato pathogen. However, little is known about the population genetic processes affecting field populations of R. solani AG-3PT, especially in the South American Colombian Andes, which is near the center of diversity of the t...

journal_title：Phytopathology

authors： Ferrucho RL,Ceresini PC,Ramirez-Escobar UM,McDonald BA,Cubeta MA,García-Domínguez C

更新日期：2013-08-01 00:00:00

abstract：:ABSTRACT Crown rust (Puccinia coronata) in indigenous populations of Avena sterilis has been cited as an example of stability of wild pathosystems that consist of natural mixtures of resistance and virulence. This study confirmed that virulence/avirulence polymorphisms in P. coronata on A. sterilis in Israel are highl...

journal_title：Phytopathology

authors： Leonard KJ,Anikster Y,Manisterski J

更新日期：2004-05-01 00:00:00

abstract：:G-negative bacteria produce myriad N-acyl-homoserine lactones (AHLs) that can function as quorum sensing (QS) signaling molecules. AHLs are also known to regulate various plant biological activities. p-Coumaroyl-homoserine lactone (pC-HSL) is the only QS molecule produced by a photosynthetic bacterium, Rhodopseudomona...

journal_title：Phytopathology

authors： Du X,Huang R,Zhang Z,Zhang D,Cheng JE,Tian P,Wang Y,Zhai Z,Chen L,Kong X,Liu Y,Su P

更新日期：2020-09-02 00:00:00

abstract：:Late blight caused by Phytophthora infestans (Mont.) de Bary is a constraint to both potato and tomato crops in Nicaragua. The hypothesis that the Nicaraguan population of P. infestans is genotypically and phenotypically diverse and potentially subdivided based on host association was tested. A collection of isolates ...

journal_title：Phytopathology

authors： Blandón-Díaz JU,Widmark AK,Hannukkala A,Andersson B,Högberg N,Yuen JE

更新日期：2012-03-01 00:00:00

abstract：:ABSTRACT Relationships between disease incidence measured at two levels in a spatial hierarchy are derived. These relationships are based on the properties of the binomial distribution, the beta-binomial distribution, and an empirical power-law relationship that relates observed variance to theoretical binomial varian...

journal_title：Phytopathology

authors： Hughes G,McRoberts N,Madden LV,Gottwald TR

更新日期：1997-05-01 00:00:00

abstract：:ABSTRACT Meloidogyne chitwoodi and M. fallax are serious pests of potato, and both species have been recently designated as quarantine organisms in the European Community and in Canada. The sympatric and less damaging species M. hapla is often found associated with both of them under temperate climates. Here, we descr...

journal_title：Phytopathology

authors： Castagnone-Sereno P,Leroy F,Bongiovanni M,Zijlstra C,Abad P

更新日期：1999-05-01 00:00:00

abstract：:ABSTRACT We developed a rapid and miniaturized bioassay for screening large numbers of rhizosphere microorganisms for their ability to induce systemic resistance to bacterial leaf spot of radish caused by Xanthomonas campestris pv. armoraciae. In this bioassay, Pantoea agglomerans strain E278Ar controlled symptoms of ...

journal_title：Phytopathology

authors： Han DY,Coplin DL,Bauer WD,Hoitink HA

更新日期：2000-04-01 00:00:00

abstract：:ABSTRACT Chemical applications, with the exception of mancozeb, reduced population sizes and spread of Clavibacter michiganensis subsp. michiganensis among tomato seedlings in the greenhouse and impacted subsequent plant development and yield in the field. While applications of copper hydroxide, copper hydroxide/manco...

journal_title：Phytopathology

authors： Hausbeck MK,Bell J,Medina-Mora C,Podolsky R,Fulbright DW

更新日期：2000-01-01 00:00:00

abstract：:ABSTRACT The influence exerted by Pythium group F (a minor pathogen ubiquitous in soilless cultures) and P. uncinulatum (a nonpathogenic species) colonization on tomato roots was investigated. In both interactions, infected roots did not exhibit obvious symptoms; however, major physiological changes occurred within th...

journal_title：Phytopathology

authors： Rey P,Benhamou N,Tirilly Y

更新日期：1998-03-01 00:00:00

abstract：:Xanthomonads were detected by using the Xan-D(CCF) medium from the brassica seeds, and their pathogenicity was determined by plant inoculation tests. It was found that some seed lots were infested with Xanthomonas campestris pv. campestris, some with X. campestris pv. raphani, and some with nonpathogenic xanthomonads....

journal_title：Phytopathology

authors： Lee YA,Yang PY,Huang SC

更新日期：2020-05-01 00:00:00

abstract：:This study investigated the effect of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal CO2 concentration [Ci], and transpiration rate [E]) and chlorophyll fluorescence a parameters (maximum quantum quenching [Fv/Fm and Fv'/Fm'...

journal_title：Phytopathology

authors： Perez CE,Rodrigues FÁ,Moreira WR,DaMatta FM

更新日期：2014-02-01 00:00:00

abstract：:Key weather factors determining the occurrence and severity of powdery mildew and yellow rust epidemics on winter wheat were identified. Empirical models were formulated to qualitatively predict a damaging epidemic (>5% severity) and quantitatively predict the disease severity given a damaging epidemic occurred. The d...

journal_title：Phytopathology

authors： Te Beest DE,Paveley ND,Shaw MW,van den Bosch F

更新日期：2008-05-01 00:00:00

abstract：:ABSTRACT To explore the potential for nontoxic crop protection technologies based on the inhibition of fungal spore adhesion, we have tested the effect of synthetic zosteric acid (p-(sulfo-oxy) cinnamic acid), a naturally occurring phenolic acid in eelgrass (Zostera marina L.) plants, on spore adhesion and infection i...

journal_title：Phytopathology

authors： Stanley MS,Callow ME,Perry R,Alberte RS,Smith R,Callow JA

更新日期：2002-04-01 00:00:00

abstract：:Compartmental models have become the dominant theoretical paradigm in mechanistic modeling of plant disease and offer well-known advantages in terms of analytic tractability, ease of simulation, and extensibility. However, underlying assumptions of constant rates of infection and of exponentially distributed latent an...

journal_title：Phytopathology

authors： Cunniffe NJ,Stutt RO,van den Bosch F,Gilligan CA

更新日期：2012-04-01 00:00:00

abstract：:ABSTRACT Phytophthora capsici is a diverse species causing disease on a broad range of both temperate and tropical plants. In this study, we used cultural characteristics, amplified fragment length polymorphism (AFLP), and DNA sequence analyses of the ribosomal internal transcribed spacer (ITS) region and mitochondria...

journal_title：Phytopathology

authors： Bowers JH,Martin FN,Tooley PW,Luz ED

更新日期：2007-04-01 00:00:00

abstract：:Complete genomic sequences of Artichoke latent virus (ArLV) have been obtained by classical or high-throughput sequencing for an ArLV isolate from Italy (ITBr05) and for two isolates from France (FR37 and FR50). The genome is 8,278 to 8,291 nucleotides long and has a genomic organization comparable with that of Chines...

journal_title：Phytopathology

authors： Minutillo SA,Marais A,Mascia T,Faure C,Svanella-Dumas L,Theil S,Payet A,Perennec S,Schoen L,Gallitelli D,Candresse T

更新日期：2015-08-01 00:00:00

abstract：:The ability to develop fungicide resistance was assessed in Monilinia fructicola isolates with different fungicide sensitivity phenotypes by adapting mycelium and conidia to increasing concentrations of selective fungicides and UV mutagenesis. Results showed that adaptation to Quinone outside inhibitor (QoI) fungicide...

journal_title：Phytopathology

authors： Luo CX,Schnabel G

更新日期：2008-02-01 00:00:00

abstract：:Understanding pathogen evolution over time is vital for plant breeding and deployment of host resistance. In the context of a soilborne pathogen, the potential of host-directed evolution of a Verticillium dahliae race 1 isolate and genotypic variation of V. dahliae associated with two major hosts (lettuce and tomato) ...

journal_title：Phytopathology

authors： Puri KD,Gurung S,Short DPG,Atallah ZK,Sandoya G,Davis RM,Hayes RJ,Subbarao KV

更新日期：2017-11-01 00:00:00