Core Rot Development in Red Delicious Apples Is Affected by Susceptibility of the Seed Locule to Alternaria alternata Colonization.

abstract：:ABSTRACT A full understanding of the pathology of esca, a chronic disease of grapevines, has been problematic, in part because the identity of the pathogen (or pathogens) has been difficult to determine. The wood decay symptoms of esca have been most often associated with Phellinus igniarius or Fomitiporia punctata. H...

journal_title：Phytopathology

authors： Cortesi P,Fischer M,Milgroom MG

更新日期：2000-09-01 00:00:00

abstract：:ABSTRACT A previously undescribed leaf spot disease of banana has been discovered in southern and Southeast Asia. The fungus identified as the causal agent of this leaf spot has a Mycosphaerella teleomorph stage and a Septoria anamorph stage. Isolation and reinoculation of the fungus to banana reproduced symptoms and ...

journal_title：Phytopathology

authors： Carlier J,Zapater MF,Lapeyre F,Jones DR,Mourichon X

更新日期：2000-08-01 00:00:00

abstract：:ABSTRACT Fusarium fungi, including F. culmorum, cause seedling blight, foot rot, and head blight diseases of cereals, resulting in yield loss. In a screen for potential disease control organisms and agents, Pseudomonas fluorescens strains MKB 100 and MKB 249, P. frederiksbergensis strain 202, Pseudomonas sp. strain MK...

journal_title：Phytopathology

authors： Khan MR,Fischer S,Egan D,Doohan FM

更新日期：2006-04-01 00:00:00

abstract：:ABSTRACT Cloned genomes of the CFH, Worland, and Cal/Logan strains of beet curly top virus (BCTV) served as helper viruses to trans-replicate defective (D) DNAs that are incapable of self-replication due to deletions within the C1 open reading frame encoding the replication initiator (Rep) protein. The Logan Rep prote...

journal_title：Phytopathology

authors： Stenger DC

更新日期：1998-11-01 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：:Seiridium cardinale is the pathogenic fungus of unknown origin responsible for a world pandemic known as cypress canker affecting several species of Cupressaceae in both the Northern and Southern Hemisphere. In this study, a comparative genetic analysis of worldwide populations was performed using sequence analysis of...

journal_title：Phytopathology

authors： Della Rocca G,Eyre CA,Danti R,Garbelotto M

更新日期：2011-12-01 00:00:00

abstract：:ABSTRACT To assemble a laboratory population of Blumeria graminis f. sp. hordei for a competition experiment, controlled crosses were performed among 30 parent isolates, which were characterized by their pathotype (i.e., the phenotype observed on a differential set containing lines including host resistance alleles) a...

journal_title：Phytopathology

authors： Bousset L,Pons-Kühnemann J

更新日期：2003-03-01 00:00:00

abstract：:ABSTRACT Culture filtrates of a pathogenic isolate (IT37) of Stemphylium vesicarium, causing brown spot of European pear, induced veinal necrosis only on pear leaves susceptible to the pathogen. Two host-specific toxins, SV-toxins I and II, were purified from culture filtrates of IT37 by successively using Amberlite X...

journal_title：Phytopathology

authors： Singh P,Bugiani R,Cavanni P,Nakajima H,Kodama M,Otani H,Kohmoto K

更新日期：1999-10-01 00:00:00

abstract：:ABSTRACT Selected isolates of Cladosporium tenuissimum were tested for their ability to inhibit in vitro aeciospore germination of the two-needle pine stem rusts Cronartium flaccidum and Peridermium pini and to suppress disease development in planta. The antagonistic fungus displayed a number of disease-suppressive me...

journal_title：Phytopathology

authors： Moricca S,Ragazzi A,Mitchelson KR,Assante G

更新日期：2001-05-01 00:00:00

abstract：:Citrus is an economically important fruit crop that is severely afflicted by Asiatic citrus bacterial canker (CBC), a disease caused by the phytopathogen Xanthomonas citri subsp. citri (X. citri). To gain insight into the molecular epidemiology of CBC, 42 Xanthomonas isolates were collected from a range of Citrus spp....

journal_title：Phytopathology

authors： Chiesa MA,Siciliano MF,Ornella L,Roeschlin RA,Favaro MA,Delgado NP,Sendín LN,Orce IG,Ploper LD,Vojnov AA,Vacas JG,Filippone MP,Castagnaro AP,Marano MR

更新日期：2013-06-01 00:00:00

abstract：:ABSTRACT Disease assessments and cytological investigations provided valuable information on the modes of action and efficacies of two prophylactic compounds, Milsana and benzothiadiazole (BTH), against powdery mildew development on long English cucumber. Milsana application significantly reduced disease incidence rel...

journal_title：Phytopathology

authors： Wurms K,Labbé C,Benhamou N,Bélanger RR

更新日期：1999-09-01 00:00:00

abstract：:Boerhavia erecta plants in and around agricultural fields in the Azua Valley of the southeastern Dominican Republic often show striking golden mosaic symptoms. Leaf samples from B. erecta plants showing these symptoms were collected in 2012 and 2013, and PCR tests with degenerate primers revealed begomovirus DNA-A and...

journal_title：Phytopathology

authors： Melgarejo TA,Rojas MR,Gilbertson RL

更新日期：2019-08-01 00:00:00

abstract：:ABSTRACT Application of salicylic acid induces systemic acquired resistance in tobacco. pchA and pchB, which encode for the biosynthesis of salicylic acid in Pseudomonas aeruginosa, were cloned into two expression vectors, and these constructs were introduced into two root-colonizing strains of P. fluorescens. Introdu...

journal_title：Phytopathology

authors： Maurhofer M,Reimmann C,Schmidli-Sacherer P,Heeb S,Haas D,Défago G

更新日期：1998-07-01 00:00:00

abstract：:ABSTRACT One hundred monoascosporic isolates of Mycosphaerella fijiensis were collected in February and November 1994 from each of two banana (Musa spp.) plantations in Costa Rica. Locations at San Pablo and Coopecariari had been sprayed with propiconazole for the past 7 years to control black Sigatoka. One hundred mo...

journal_title：Phytopathology

authors： Romero RA,Sutton TB

更新日期：1997-01-01 00:00:00

abstract：:ABSTRACT Plasmopara viticola populations collected from three islands in the Ionian Sea-an arm of the Mediterranean Sea to the west of Greece-were analyzed with microsatellite molecular markers in order to investigate the pathogen population structure. Downy mildew populations from mainland regions previously studied ...

journal_title：Phytopathology

authors： Rumbou A,Gessler C

更新日期：2006-05-01 00:00:00

abstract：:ABSTRACT The spread of Fusarium head blight of wheat from a small area inoculum source was examined in wheat plots (100, 625, or 2,500 m(2)) inoculated in the center with Gibberella zeae-colonized corn kernels or macro-conidia sprayed on heads at anthesis. With the first inoculation method, disease foci were produced ...

journal_title：Phytopathology

authors： Fernando WG,Paulitz TC,Seaman WL,Dutilleul P,Miller JD

更新日期：1997-04-01 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：:The fungus Rhizoctonia oryzae-sativae is an important pathogen that causes the aggregated sheath spot disease on rice. In this study, we investigated the genetic structure of rice-adapted populations of R. oryzae-sativae sampled from traditional rice-cropping areas from the Paraíba Valley, São Paulo, Brazil, and from ...

journal_title：Phytopathology

authors： Pereira DA,Ceresini PC,Castroagudín VL,Ramos-Molina LM,Chavarro-Mesa E,Negrisoli MM,Campos SN,Pegolo ME,Takada HM

更新日期：2017-01-01 00:00:00

abstract：:In this study, spatial analyses were conducted at three different scales to better understand the epidemiology of rice blast, a major rice disease caused by Magnaporthe oryzae. At the regional scale, across the major rice production regions in China, rice blast incidence was monitored on 101 dates at 193 stations from...

journal_title：Phytopathology

authors： Guo F,Chen X,Lu M,Yang L,Wang S,Wu BM

更新日期：2018-11-01 00:00:00

abstract：:ABSTRACT Survival of Fusarium oxysporum f. sp. niveum following heat treatments was studied using flow cytometric, physiological, and microscopic assays. We exposed germinating conidia to sublethal temperatures from 36 to 42 degrees C for 60 min, followed by rhodamine 123 staining and flow cytometry, and found increas...

journal_title：Phytopathology

authors： Assaraf MP,Ginzburg C,Katan J

更新日期：2002-09-01 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：:A collection of 565 isolates of Verticillium dahliae, recovered between 1992 and 1997 from 13 host plant species and soil at 47 sites in Israel, was tested for vegetative compatibility using nitrate-nonutilizing (nit) mutants. Three vegetative compatibility groups (VCGs) were found and identified as VCG2A (28 isolates...

journal_title：Phytopathology

authors： Korolev N,Katan J,Katan T

更新日期：2000-05-01 00:00:00

abstract：:Venturia effusa (syn. Fusicladium effusum), causal agent of pecan scab, is the most prevalent pathogen of pecan (Carya illinoinensis), causing severe yield losses in the southeastern United States. V. effusa is currently known only by its asexual (conidial) stage. However, the degree and distribution of genetic divers...

journal_title：Phytopathology

authors： Young CA,Bock CH,Charlton ND,Mattupalli C,Krom N,Bowen JK,Templeton M,Plummer KM,Wood BW

更新日期：2018-07-01 00:00:00

abstract：:ABSTRACT Two microtiter plate assays were developed to study the adherence of the plant-pathogenic mollicute Spiroplasma citri to a monolayer of cultured cells of its leafhopper vector, Circulifer tenellus. Adherence was significantly reduced by prior treatment of the spiroplasmas with proteinase K or pronase. Electro...

journal_title：Phytopathology

authors： Yu J,Wayadande AC,Fletcher J

更新日期：2000-07-01 00:00:00

abstract：:As the causal agent of late blight on potato, Phytophthora infestans is one of the most destructive plant pathogens worldwide and widely known as the Irish potato famine pathogen. Understanding the genetic structure of P. infestans populations is important both for breeding and deployment of resistant varieties and fo...

journal_title：Phytopathology

authors： Tian Y,Yin J,Sun J,Ma H,Ma Y,Quan J,Shan W

更新日期：2015-06-01 00:00:00

abstract：:The major quantitative trait locus (QTL) qHS2.09 plays an important role in resistance to head smut during maize breeding and production. In this study, a near-isogenic line (NIL), L34, which harbors the major QTL qHS2.09 in bin 2.09, was developed using a resistant donor 'Mo17' in a susceptible genetic background 'Hu...

journal_title：Phytopathology

authors： Weng J,Liu X,Wang Z,Wang J,Zhang L,Hao Z,Xie C,Li M,Zhang D,Bai L,Liu C,Zhang S,Li X

更新日期：2012-07-01 00:00:00

abstract：:ABSTRACT Greasy spot, caused by Mycosphaerella citri, produces a leaf spot disease affecting all citrus species in Florida and the Caribbean Basin. M. citri produces pseudothecia and ascospores, which are considered the principal source of inoculum, in decomposing leaves on the grove floor. In studies using a computer...

journal_title：Phytopathology

authors： Mondal SN,Gottwald TR,Timmer LW

更新日期：2003-08-01 00:00:00

abstract：:ABSTRACT Severe Cercospora leaf spots epidemics in sugar beet during the late 1980s and early 1990s in southern Germany prompted us to initiate investigations on the epidemiology of the causal agent, Cercospora beticola. The data set involved 69 field trials (1993 to 2003) focusing on factors affecting the epidemic on...

journal_title：Phytopathology

authors： Wolf PF,Verreet JA

更新日期：2005-03-01 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：:Stalk rot is one of the most serious and widespread diseases in maize, and effective control measures are currently lacking. Therefore, this study aimed to develop a new biological agent to manage this disease. An antagonistic bacterial strain, TA-1, was isolated from rhizosphere soil and identified as Bacillus methyl...

journal_title：Phytopathology

authors： Cheng X,Ji X,Ge Y,Li J,Qi W,Qiao K

更新日期：2019-04-01 00:00:00