Genetic and Pathogenic Characterization of Phacidiopycnis washingtonensis from Apple and Pacific Madrone from the Western United States.

abstract：:Tomato chlorosis virus (ToCV), and Tomato infectious chlorosis virus (TICV), family Closteroviridae, genus Crinivirus, cause interveinal chlorosis, leaf brittleness, and limited necrotic flecking or bronzing on tomato leaves. Both viruses cause a decline in plant vigor and reduce fruit yield, and are emerging as serio...

journal_title：Phytopathology

authors： Wintermantel WM,Cortez AA,Anchieta AG,Gulati-Sakhuja A,Hladky LL

更新日期：2008-12-01 00:00:00

abstract：:ABSTRACT Since 1991, dramatic changes have occurred in the genetic composition of populations of Phytophthora infestans in the United States. Clonal lineages recently introduced into the United States (US-7 and US-8) are more common now than the previously dominant lineage (US-1). To help determine why these changes o...

journal_title：Phytopathology

authors： Kato M,Mizubuti ES,Goodwin SB,Fry WE

更新日期：1997-09-01 00:00:00

abstract：:Few molecular details of effectors of Heterodera avenae parasitism are known. We performed a high-throughput sequencing analysis of the H. avenae transcriptome at five developmental stages. A total of 82,549 unigenes were ultimately obtained, and 747 transcripts showed best hits to genes putatively encoding carbohydra...

journal_title：Phytopathology

authors： Cui JK,Peng H,Qiao F,Wang GF,Huang WK,Wu DQ,Peng D

更新日期：2018-02-01 00:00:00

abstract：:ABSTRACT The dominant gene Am from Lycopersicon hirsutum f. sp. glabratum PI134417 confers resistance to most strains of Alfalfa mosaic virus, including the recently identified necrotic strains. The phenotypic response includes a lack of symptom development following mechanical inoculation of leaves. To study the resi...

journal_title：Phytopathology

authors： Parrella G,Moretti A,Gognalons P,Lesage ML,Marchoux G,Gebre-Selassie K,Caranta C

更新日期：2004-04-01 00:00:00

abstract：:Citrus Huanglongbing (HLB) is the most severe disease of citrus plants caused by 'Candidatus Liberibacter asiaticus' and transmitted by the insect vector Asian citrus psyllid (ACP). No effective curative measure is available against HLB. For citrus production areas without HLB or with low HLB disease incidence, remova...

journal_title：Phytopathology

authors： Pandey SS,Wang N

更新日期：2019-06-01 00:00:00

abstract：:Current methods to quantitatively assess fungicide sensitivity for a diverse range of oomycetes are slow and labor intensive. Microtiter-based assays can be used to increase throughput. However, many factors can affect their quality and reproducibility. Therefore, efficient and reliable methods for detection of assay ...

journal_title：Phytopathology

authors： Noel ZA,Rojas AJ,Jacobs JL,Chilvers MI

更新日期：2019-09-01 00:00:00

abstract：:ABSTRACT Relationships between environmental factors and release of ascospores of Anisogramma anomala, the causal agent of eastern filbert blight, were examined in four European hazelnut (Corylus avellana) orchards during a 2-year period. In each orchard, Burkhard volumetric spore traps and automated weather-monitorin...

journal_title：Phytopathology

authors： Pinkerton JN,Johnson KB,Stone JK,Ivors KL

更新日期：1998-02-01 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 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 Wheat was assessed at four crop growth stages for take-all (Gaeumannomyces graminis var. tritici) in a series of field trials that studied the effects of five wheat management practices: sowing date, plant density, nitrogen fertilizer dose and form, and removal/burial of cereal straw. An equation expressing d...

journal_title：Phytopathology

authors： Colbach N,Lucas P,Meynard JM

更新日期：1997-01-01 00:00:00

abstract：:ABSTRACT Root-knot nematodes of the genus Meloidogyne are economically important pathogens of a wide range of crops. The tomato resistance gene Mi typically confers resistance to the three major species, M. incognita, M. javanica, and M. arenaria. However, virulent populations completely overcoming the Mi resistance s...

journal_title：Phytopathology

authors： Xu J,Narabu T,Mizukubo T,Hibi T

更新日期：2001-04-01 00:00:00

abstract：:ABSTRACT The study was conducted to evaluate the potential of induced resistance to infestation of sunflower (Helianthus annuus L.) by the parasitic weed Orobanche cumana Wallr. Treatment of sunflower seeds with 40 ppm of benzo(1,2,3)thiadiazole-7-carbothioic acid S-methyl ester (BTH) for 36 h completely prevented inf...

journal_title：Phytopathology

authors： Sauerborn J,Buschmann H,Ghiasi KG,Kogel KH

更新日期：2002-01-01 00:00:00

abstract：:Dark pigmented fungi of the Gaeumannomyces-Phialophora complex were isolated from the roots of wheat grown in fields in eastern Washington State. These fungi were identified as Phialophora spp. on the basis of morphological and genetic characteristics. The isolates produced lobed hyphopodia on wheat coleoptiles, phial...

journal_title：Phytopathology

authors： Kwak YS,Bakker PA,Glandorf DC,Rice JT,Paulitz TC,Weller DM

更新日期：2010-05-01 00:00:00

abstract：:ABSTRACT Striga aspera and S. hermonthica are sympatric in Africa. Each may serve as virulent gene reservoirs for the other if they hybridize and their hybrids are virulent and fertile. Intraspecific and interspecific crosses were made within and between the species, and reproductive success was determined. Freshly ha...

journal_title：Phytopathology

authors： Aigbokhan EI,Berner DK,Musselman LJ

更新日期：1998-06-01 00:00:00

abstract：:ABSTRACT The species X. index, X. diversicaudatum, X. vuittenezi, and X. italiae are established (E) or putative (P) vectors of Grapevine fanleaf virus (GFLV) (E), Arabis mosaic virus (E), Grapevine chrome mosaic virus (P), and GFLV (P) nepoviruses of grapevine, respectively. All four species are very closely related ...

journal_title：Phytopathology

authors： Wang X,Bosselut N,Castagnone C,Voisin R,Abad P,Esmenjaud D

更新日期：2003-02-01 00:00:00

abstract：:ABSTRACT Vegetative compatibility has been used to assess the population biology of many fungal plant pathogens. However, for many species, including Fusarium graminearum, this has meant making auxotrophic mutants to force heterokaryon formation. A method was developed to observe barrage zones of thick, raised myceliu...

journal_title：Phytopathology

authors： McCallum BD,Tekauz A,Gilbert J

更新日期：2004-05-01 00:00:00

abstract：:Deoxynivalenol (DON) concentrations in mature wheat grain are usually correlated with symptoms produced by Gibberella zeae infection. However, there have been numerous observations of unacceptably high DON in asymptomatic crops, which can lead to lower-than-expected milling reductions in DON. We conducted a field expe...

journal_title：Phytopathology

authors： Cowger C,Arrellano C

更新日期：2010-07-01 00:00:00

abstract：:Potato late blight, caused by the oomycete phytopathogen Phytophthora infestans, is a devastating disease found in potato-growing regions worldwide. Long-term management strategies to control late blight include the incorporation of host resistance to predominant strains. However, due to rapid genetic changes within p...

journal_title：Phytopathology

authors： Khiutti A,Spooner DM,Jansky SH,Halterman DA

更新日期：2015-09-01 00:00:00

abstract：:Developing oat cultivars with partial resistance to crown rust would be beneficial and cost-effective for disease management. Two recombinant inbred-line populations were generated by crossing the susceptible cultivar Provena with two partially resistant sources, CDC Boyer and breeding line 94197A1-9-2-2-2-5. A third ...

journal_title：Phytopathology

authors： Babiker EM,Gordon TC,Jackson EW,Chao S,Harrison SA,Carson ML,Obert DE,Bonman JM

更新日期：2015-02-01 00:00:00

abstract：:The distinguished intracellular stylet puncture called phloem-pd (potential drop [pd]) produced by Myzus persicae has been associated with the transmission of the semipersistently transmitted, phloem-limited Beet yellows virus (BYV, Closterovirus). However, the production of intracellular punctures in phloem cells (ph...

journal_title：Phytopathology

authors： Jiménez J,Arias-Martín M,Moreno A,Garzo E,Fereres A

更新日期：2020-01-01 00:00:00

abstract：:ABSTRACT An isometric virus ca. 25 nm in diameter with angular contour was isolated from onion plants showing yellow leaf striping and necrotic tips. The virus was mechanically transmitted onto 28 species of indicator plants belonging to five families, viz. Amaranthaceae, Chenopodiaceae, Cucurbitaceae, Leguminosae, an...

journal_title：Phytopathology

authors： Maliogka VI,Dovas CI,Lesemann DE,Winter S,Katis NI

更新日期：2006-06-01 00:00:00

abstract：:Wheat powdery mildew is a disease of global importance that occurs across a wide geographic area in the United States. A virulence survey of Blumeria graminis f. sp. tritici, the causal agent, was conducted by sampling 36 wheat fields in 15 U.S. states in the years 2013 and 2014. Using a hierarchical sampling protocol...

journal_title：Phytopathology

authors： Cowger C,Mehra L,Arellano C,Meyers E,Murphy JP

更新日期：2018-03-01 00:00:00

abstract：:Tamarillo, or tree tomato (Solanum betaceum), is a perennial small tree or shrub species cultivated in subtropical areas for fresh fruit and juice production. In Ecuador, tamarillo orchards are affected by several viruses, with one previously identified as potato virus Y (PVY); however, the specific strain composition...

journal_title：Phytopathology

authors： Green KJ,Funke CN,Chojnacky J,Alvarez-Quinto RA,Ochoa JB,Quito-Avila DF,Karasev AV

更新日期：2020-09-01 00:00:00

abstract：:ABSTRACT A 3.3-kb fragment of genomic DNA from bacteriophage Phi-Ea1h encoding an amylovoran-directed depolymerase lyase was sequenced, and three open reading frames (ORFs) were detected. The first ORF could encode a lysozyme and the second a holin that may form a pore supporting cell lysis by the lysozyme. The third ...

journal_title：Phytopathology

authors： Kim WS,Geider K

更新日期：2000-11-01 00:00:00

abstract：:ABSTRACT Pear blossoms were sampled during various stages of bloom in 1991 and 1992 from orchards at Cashmere, WA, and Corvallis and Medford, OR, for epiphytic populations of culturable bacteria. On stigmatic surfaces, bacteria were isolated from 2 to 32% of blossoms prior to petal expansion and from 47 to 94% of blos...

journal_title：Phytopathology

authors： Stockwell VO,McLaughlin RJ,Henkels MD,Loper JE,Sugar D,Roberts RG

更新日期：1999-12-01 00:00:00

abstract：:The estrogenic mycotoxin zearalenone (ZON) produced by some Fusarium spp. causes reproductive problems and hyperestrogenic syndromes in mammals. In an effort to elucidate the molecular pathways of ZON production, we present a comparative real-time quantitative polymerase chain reaction expression study of seven contig...

journal_title：Phytopathology

authors： Lysøe E,Bone KR,Klemsdal SS

更新日期：2009-02-01 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：:ABSTRACT Liquid swine manure added to acidic soils killed microsclerotia of the wilt fungus Verticillium dahliae. We investigated whether volatile fatty acids (VFAs) in the manure were responsible for this toxicity. The survival of microsclerotia was determined after exposure to various dilutions of manure or its VFA ...

journal_title：Phytopathology

authors： Tenuta M,Conn KL,Lazarovits G

更新日期：2002-05-01 00:00:00

abstract：:ABSTRACT Fifty-one isolates representing the four Botrytis spp. associated with onion neck rot were clustered by unweighted pair group method with arithmetic mean based on universal-primed polymerase chain reaction (UP-PCR) fingerprints. Bootstrap analysis of the consensus phenogram clearly demonstrated five strong cl...

journal_title：Phytopathology

authors： Nielsen K,Justesen AF,Jensen DF,Yohalem DS

更新日期：2001-06-01 00:00:00

abstract：:ABSTRACT Two biocontrol agents, a yeast (Pichia guilermondii) and a bacterium (Bacillus mycoides), were tested separately and together for suppression of Botrytis cinerea on strawberry leaves. The aims of the research were to determine whether the use of their combination would broaden the environmental conditions und...

journal_title：Phytopathology

authors： Guetsky R,Shtienberg D,Elad Y,Dinoor A

更新日期：2001-07-01 00:00:00