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 evolutionary relationships among Verticillium dahliae vegetative compatibility (VCG) subgroups VCG1A, VCG1B, VCG2A, VCG2B, VCG4A, VCG4B, and VCG6 were investigated by parsimony analysis of amplified fragment length polymorphism (AFLP) fingerprints and sequences of six DNA regions (actin, beta-tubulin, calmodulin, ...

journal_title：Phytopathology

authors： Collado-Romero M,Mercado-Blanco J,Olivares-García C,Jiménez-Díaz RM

更新日期：2008-09-01 00:00:00

abstract：:Based on the number of new reports during the last two decades, bacterial blight of onion (Allium cepa) is considered an emerging disease. The causal agent, Xanthomonas axonopodis pv. allii, is pathogenic to several Allium species after inoculation, but outbreaks worldwide have been primarily reported on onion. We des...

journal_title：Phytopathology

authors： Picard Y,Roumagnac P,Legrand D,Humeau L,Robène-Soustrade I,Chiroleu F,Gagnevin L,Pruvost O

更新日期：2008-08-01 00:00:00

abstract：:Lily leaf blight, caused by Botrytis elliptica, is an important fungal disease in Taiwan. In order to identify an effective, nonfungicide method to decrease disease incidence in Lilium formosanum, the efficacy of rhizobacteria eliciting induced systemic resistance (ISR) was examined in this study. Over 300 rhizobacter...

journal_title：Phytopathology

authors： Liu YH,Huang CJ,Chen CY

更新日期：2008-07-01 00:00:00

abstract：:The importance of sexual recombination in determining fungal population structure cannot be inferred solely from the relative abundance of sexual and asexual spores and reproductive structures. To complement a previously reported study of proportions of Mycosphaerella graminicola ascocarps and pycnidia, we investigate...

journal_title：Phytopathology

authors： Cowger C,Brunner PC,Mundt CC

更新日期：2008-07-01 00:00:00

abstract：:The study of the transmission biology of insect-borne plant viruses is important to develop disease control practices. We characterized the transmission of a nanovirus, Banana bunchy top virus (BBTV), by its aphid vector Pentalonia nigronervosa Coquerel (Hemiptera, Aphididae) with respect to temperature, vector life s...

journal_title：Phytopathology

authors： Anhalt MD,Almeida RP

更新日期：2008-06-01 00:00:00

abstract：:The ability of four plant growth-promoting rhizobacteria, isolated in a previous study, to induce systemic resistance on Arabidopsis thaliana Col 0 against biotic and abiotic stress was evaluated. All the bacteria enhanced protection against the foliar pathogen Pseudomonas syringae DC3000 and increased plant tolerance...

journal_title：Phytopathology

authors： Barriuso J,Solano BR,Gutiérrez Mañero FJ

更新日期：2008-06-01 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：:Previous works indicated a considerable variation in the pathogenicity, virulence, and host range of Oidium neolycopersici isolates causing tomato powdery mildew epidemics in many parts of the world. In this study, rDNA internal transcribed spacer (ITS) sequences, and amplified fragment length polymorphism (AFLP) patt...

journal_title：Phytopathology

authors： Jankovics T,Bai Y,Kovács GM,Bardin M,Nicot PC,Toyoda H,Matsuda Y,Niks RE,Kiss L

更新日期：2008-05-01 00:00:00

abstract：:The genetic basis of systemic resistance to bacterial blight disease (blight) of anthurium (Anthurium andraeanum) caused by Xanthomonas axonopodis pv. dieffenbachiae was investigated in progenies of 53 crosses involving 31 parent cultivars using segregation analysis. Inoculation of parents and progenies was achieved b...

journal_title：Phytopathology

authors： Elibox W,Umaharan P

更新日期：2008-04-01 00:00:00

abstract：:Fifty strains of Fusarium oxysporum, recovered from rhizosphere soil around native Gossypium species and found to be mildly virulent on cotton (Gossypium hirsutum), were used to assay the propensity for evolution of virulence using serial passage assays through cotton. Only one lineage A strain, 2613, successfully com...

journal_title：Phytopathology

authors： Wang B,Brubaker CL,Tate W,Woods MJ,Burdon JJ

更新日期：2008-03-01 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：:The population structure of the grape powdery mildew fungus, Erysiphe necator (formerly Uncinula necator), has been hypothesized to vary from being clonal to highly diverse and recombining. We report here on the structure of an E. necator population sampled during a 4-year period from an isolated vineyard in northern ...

journal_title：Phytopathology

authors： Cortesi P,Pizzatti C,Bertocchi D,Milgroom MG

更新日期：2008-02-01 00:00:00

abstract：:ABSTRACT Over 4 years, the environmental conditions and the causal agents of Fusarium head blight (FHB) disease of wheat were determined in field sites in four European countries: Hungary, Ireland, Italy, and the United Kingdom. Polymerase chain reaction-based methods were used to detect each species causing FHB and q...

journal_title：Phytopathology

authors： Xu XM,Nicholson P,Thomsett MA,Simpson D,Cooke BM,Doohan FM,Brennan J,Monaghan S,Moretti A,Mule G,Hornok L,Beki E,Tatnell J,Ritieni A,Edwards SG

更新日期：2008-01-01 00:00:00

abstract：:ABSTRACT Diseases of cacao, Theobroma cacao, account for losses of more than 30% of the potential crop. These losses have caused a steady decline in production and a reduction in bean quality in almost all the cacao-producing areas in the world, especially in small-holder farms in Latin America and West Africa. The mo...

journal_title：Phytopathology

authors： Hebbar PK

更新日期：2007-12-01 00:00:00

abstract：:ABSTRACT Twenty-one strains of Botrytis cinerea isolated from 13 species of plants grown in China were compared for pathogenicity on Brassica napus, mycelial growth on potato dextrose agar, and presence of double-stranded (ds)RNA. The results showed that the strain CanBc-1 was severely debilitated in pathogenicity and...

journal_title：Phytopathology

authors： Wu MD,Zhang L,Li GQ,Jiang DH,Hou MS,Huang HC

更新日期：2007-12-01 00:00:00

abstract：:ABSTRACT During the infection of citrus fruit by Penicillium digitatum there is little evidence of a host defense response. This suggests that P. digitatum has the ability to suppress host defenses. The current study demonstrates that P. digitatum suppresses a defense-related hydrogen peroxide (H(2)O(2)) burst in host...

journal_title：Phytopathology

authors： Macarisin D,Cohen L,Eick A,Rafael G,Belausov E,Wisniewski M,Droby S

更新日期：2007-11-01 00:00:00

abstract：:ABSTRACT Alternaria alternata is the causal organism of core rot decay symptoms in susceptible cv. Red Delicious but not in resistant cv. Golden Delicious. The two cultivars did not differ in natural colonization of the style and ovary during the first week after full bloom; colonization of the ovary in the susceptibl...

journal_title：Phytopathology

authors： Niem J,Miyara I,Ettedgui Y,Reuveni M,Flaishman M,Prusky D

更新日期：2007-11-01 00:00:00

abstract：:ABSTRACT Long-distance dispersal of spores generally presents anisotropy. This anisotropy can appear in the mean number of spores deposited along a given direction (anisotropy in density) and in the mean distance that a spore travels in a given direction (anisotropy in distance). Specific experiments together with a s...

journal_title：Phytopathology

authors： Soubeyrand S,Enjalbert J,Sanchez A,Sache I

更新日期：2007-10-01 00:00:00

abstract：:ABSTRACT During formation of appressoria produced from conidia and ascospores of Venturia inaequalis, a dark brown ring structure was detected at the base of appressoria. This melanized appressorial ring structure (MARS) was attached to the leaf surface like a sealing ring and formed the fungus-plant interface; it is ...

journal_title：Phytopathology

authors： Steiner U,Oerke EC

更新日期：2007-10-01 00:00:00

abstract：:ABSTRACT Pectobacterium and Dickeya spp. are related broad-host-range entero-bacterial pathogens of angiosperms. A review of the literature shows that these genera each cause disease in species from at least 35% of angiosperm plant orders. The known host ranges of these pathogens partially overlap and, together, these...

journal_title：Phytopathology

authors： Ma B,Hibbing ME,Kim HS,Reedy RM,Yedidia I,Breuer J,Breuer J,Glasner JD,Perna NT,Kelman A,Charkowski AO

更新日期：2007-09-01 00:00:00

abstract：:ABSTRACT Barley has two flowering types, chasmogamous (open-flowering) and cleistogamous (closed-flowering). We examined the effect of the timing of Fusarium graminearum infection on Fusarium head blight (FHB) and mycotoxin accumulation in barley cultivars with different flowering types using greenhouse experiments. I...

journal_title：Phytopathology

authors： Yoshida M,Kawada N,Nakajima T

更新日期：2007-09-01 00:00:00

abstract：:ABSTRACT Temperature is a critical factor in plant disease development. As part of a research program to determine how specific environmental variables affect soybean rust, we determined temperature effects on urediniospore germination and germ tube growth of four isolates of Phakopsora pachyrhizi, one each from Brazi...

journal_title：Phytopathology

authors： Bonde MR,Berner DK,Nester SE,Frederick RD

更新日期：2007-08-01 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 Sweet pepper-Leveillula taurica microclimate relations were studied under controlled conditions and in commercial greenhouses. Conidial germination occurred at 10 to 37 degrees C and was optimal at 20 degrees C. Conidial viability declined as temperatures increased to 40 degrees C for 6 h. Leaf colonization w...

journal_title：Phytopathology

authors： Elad Y,Messika Y,Brand M,David DR,Sztejnberg A

更新日期：2007-07-01 00:00:00

abstract：:ABSTRACT Pyrenophora tritici-repentis, causal agent of tan spot of wheat, produces multiple host-selective toxins (HSTs), including Ptr ToxA, Ptr ToxB, and Ptr ToxC. The specific complement of HSTs produced by a particular isolate determines its host cultivar specificity. Each unique specificity profile, represented b...

journal_title：Phytopathology

authors： Andrie RM,Pandelova I,Ciuffetti LM

更新日期：2007-06-01 00:00:00

abstract：:ABSTRACT Poplar leaf rust caused by Melampsora medusae f. sp. deltoidae is a widespread disease in North America, where epidemics occur within zones of sympatry and allopatry of telial hosts (Populus spp.) and aecial hosts (Larix spp.). To test the hypothesis that epidemics originate in the zone of sympatry where the ...

journal_title：Phytopathology

authors： Bourassa M,Bernier L,Hamelin RC

更新日期：2007-05-01 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：:ABSTRACT Ageratum conyzoides plants exhibiting yellow vein symptoms, collected near Haikou, Hainan Province, China, contained begomoviral DNA-A-like molecules. The complete sequences of the molecules from two samples, Hn2 and Hn2-19, were shown to consist of 2,768 and 2,748 nucelotides (nt), respectively. These sequen...

journal_title：Phytopathology

authors： Xiong Q,Fan S,Wu J,Zhou X

更新日期：2007-04-01 00:00:00

abstract：:ABSTRACT The contribution of gluconic acid secretion to the colonization of apple tissue by Penicillium expansum was analyzed by modulation (increase or decrease) of gluconic acid accumulation at the infection court. P. expansum isolates that express the most gox2 transcripts and concomitant glucose oxidase (GOX) acti...

journal_title：Phytopathology

authors： Hadas Y,Goldberg I,Pines O,Prusky D

更新日期：2007-03-01 00:00:00

abstract：:ABSTRACT Fusarium verticillioides, F. proliferatum, and Aspergillus flavus cause ear rots of maize and contaminate the grain with mycotoxins (fumonisin or aflatoxin). The objective of this study was to investigate the relationships between resistance to Fusarium and Aspergillus ear rots and fumonisin and aflatoxin con...

journal_title：Phytopathology

authors： Robertson-Hoyt LA,Betrán J,Payne GA,White DG,Isakeit T,Maragos CM,Molnár TL,Holland JB

更新日期：2007-03-01 00:00:00

abstract：:ABSTRACT The complete sequence of the 7.07 Mb genome of the biological control agent Pseudomonas fluorescens Pf-5 is now available, providing a new opportunity to advance knowledge of biological control through genomics. P. fluorescens Pf-5 is a rhizosphere bacterium that suppresses seedling emergence diseases and pro...

journal_title：Phytopathology

authors： Loper JE,Kobayashi DY,Paulsen IT

更新日期：2007-02-01 00:00:00

abstract：:ABSTRACT Septoria speckled leaf blotch (SSLB) caused by Septoria passerinii is a common disease in barley. SSLB resistance genes Rsp1, Rsp2, and Rsp3 have previously been identified in the United States Department of Agriculture National Small Grains collection accessions CIho 14300, CIho 4780, and CIho 10644, respect...

journal_title：Phytopathology

authors： Lee SH,Neate SM

更新日期：2007-02-01 00:00:00

abstract：:ABSTRACT The comovirus Bean pod mottle virus (BPMV) is widespread in the soybean-growing regions in the United States. It has a bipartite genome consisting of RNA1 and RNA2, which are encapsidated separately. We previously have reported the occurrence in nature of two distinct subgroups of BPMV strains (subgroups I an...

journal_title：Phytopathology

authors： Gu H,Zhang C,Ghabrial SA

更新日期：2007-01-01 00:00:00

abstract：:ABSTRACT Suppressive effects of soil amendment with residues of 12 cultivars of Brassica rapa on damping-off of sugar beet were evaluated in soils infested with Rhizoctonia solani. Residues of clover and peanut were tested as noncruciferous controls. The incidence of damping-off was significantly and consistently supp...

journal_title：Phytopathology

authors： Kasuya M,Olivier AR,Ota Y,Tojo M,Honjo H,Fukui R

更新日期：2006-12-01 00:00:00

abstract：:ABSTRACT Xanthomonas axonopodis pv. glycines is the causal agent of bacterial pustule disease of soybeans. A transposon insertional mutant (KU-P-M670) of X. axonopodis pv. glycines derived from wild-type strain KU-P-34017 lost the ability to induce the hypersensitive response (HR) on tobacco and pepper but retained it...

journal_title：Phytopathology

authors： Kaewnum S,Prathuangwong S,Burr TJ

更新日期：2006-11-01 00:00:00

abstract：:ABSTRACT Colletotrichum coccodes is a biocontrol agent of velvetleaf (Abutilon theophrasti), a noxious weed of corn and soybean. Metallothioneins (MTs) and basic region/leucine zipper motif (bZIP) are heavy-metal-binding proteins and transcription factors, respectively, that have been related to several plant processe...

journal_title：Phytopathology

authors： Dauch AL,Jabaji-Hare SH

更新日期：2006-10-01 00:00:00

abstract：:ABSTRACT Late blight (Phytophthora infestans), pink rot (Phytophthora erythroseptica), leak (Pythium ultimum), dry rot (Fusarium sambucinum), and soft rot (Erwinia carotovora subsp. carotovora and subsp. atroseptica) are particularly damaging diseases of stored potato tubers worldwide. In this study, we present a meth...

journal_title：Phytopathology

authors： Atallah ZK,Stevenson WR

更新日期：2006-09-01 00:00:00

abstract：:ABSTRACT A total of 126 field studies reporting deoxynivalenol (DON; ppm) content of harvested wheat grain and Fusarium head blight index (IND; field or plot-level disease severity) were analyzed to determine the overall mean regression slope and intercept for the relationship between DON and IND, and the influence of...

journal_title：Phytopathology

authors： Paul PA,Lipps PE,Madden LV

更新日期：2006-09-01 00:00:00

abstract：:ABSTRACT The ability of Dactylella oviparasitica and Fusarium oxysporum to suppress Heterodera schachtii numbers was examined in field microplots. Fungi were individually added to fumigated field soil that was seeded with sugar beet. Four weeks later, soils were infested with H. schachtii second-stage juveniles (J2). ...

journal_title：Phytopathology

authors： Olatinwo R,Borneman J,Becker JO

更新日期：2006-08-01 00:00:00