Host range and molecular phylogenies of the soft rot enterobacterial genera pectobacterium and dickeya.

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：:ABSTRACT Fusarium head blight (FHB) is a devastating disease that causes significant reductions in yield and quality in wheat and barley. Barley grains infected with deoxynivalenol (DON), a vomitoxin produced by Fusarium graminearum, are rejected for malting and brewing. Among six-rowed barley cultivars tested thus fa...

journal_title：Phytopathology

authors： Ma Z,Steffenson BJ,Prom LK,Lapitan NL

更新日期：2000-10-01 00:00:00

abstract：:ABSTRACT Ten wild-type strains and two benomyl-resistant mutants of Talaromyces flavus were examined for their ability to secrete the cell wall-degrading enzymes chitinase, beta-1,3-glucanase, and cellulase, to parasitize sclerotia of Sclerotium rolfsii, to reduce bean stem rot caused by S. rolfsii, and to secrete ant...

journal_title：Phytopathology

authors： Madi L,Katan T,Katan J,Henis Y

更新日期：1997-10-01 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：:Success in biological control of plant diseases remains inconsistent in the field. A collection of well-characterized Streptomyces antagonists (n = 19 isolates) was tested for their capacities to inhibit pathogenic Streptomyces scabies (n = 15 isolates). There was significant variation among antagonists in ability to ...

journal_title：Phytopathology

authors： Otto-Hanson LK,Grabau Z,Rosen C,Salomon CE,Kinkel LL

更新日期：2013-01-01 00:00:00

abstract：:ABSTRACT A fungivorous nematode, Aphelenchoides sp., was isolated from field soil by baiting with mycelium of the biocontrol fungus Trichoderma harzianum ThzID1, and subsequently was maintained on agar cultures of the fungus. Interactions between the nematode and the green fluorescent protein-producing transformant, T...

journal_title：Phytopathology

authors： Bae YS,Knudsen GR

更新日期：2001-03-01 00:00:00

abstract：:ABSTRACT We determined that multiple and independent introductions of copper resistance genes have taken place for strains of Xanthomonas citri subsp. citri from Argentina and strains of X. alfalfae subsp. citrumelonis from Florida. This study compared the partial nucleotide sequences of principal copper resistance ge...

journal_title：Phytopathology

authors： Behlau F,Hong JC,Jones JB,Graham JH

更新日期：2013-05-01 00:00:00

abstract：:Disease spread occurs at several spatial scales, e.g., from field to field, plant to plant, and leaf to leaf. So far, epidemiological models have largely overlooked the multiscale nature of epidemics. Here, we propose a model that simulates disease spread across multiple scales in a nested hierarchy. The model is base...

journal_title：Phytopathology

authors： Gosme M,Lucas P

更新日期：2009-07-01 00:00:00

abstract：:An outbreak of a new disease occurred in cotton (Gossypium hirsutum) fields in northwest Argentina starting in the 2009-10 growing season and is still spreading steadily. The characteristic symptoms of the disease included slight leaf rolling and a bushy phenotype in the upper part of the plant. In this study, we dete...

journal_title：Phytopathology

authors： Agrofoglio YC,Delfosse VC,Casse MF,Hopp HE,Kresic IB,Distéfano AJ

更新日期：2017-03-01 00:00:00

abstract：:Fig mosaic occurs worldwide and is the most common and important viral disease of fig. In the quest to identify the causal agent of the disease, several new viruses have been identified, including a new DNA virus, the subject of this communication. Phylogenetic analysis placed the virus, provisionally named Fig badnav...

journal_title：Phytopathology

authors： Laney AG,Hassan M,Tzanetakis IE

更新日期：2012-12-01 00:00:00

abstract：:ABSTRACT Mycosphaerella citri, the cause of citrus greasy spot, produces pseudothecia and ascospores in decomposing leaf litter on the grove floor. In laboratory studies, the effect of wetting and drying and temperature on the formation, maturation, and production of pseudothecia and ascospores was evaluated on mature...

journal_title：Phytopathology

authors： Mondal SN,Timmer LW

更新日期：2002-12-01 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 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：:Phytophthora species are destructive fungus-like plant pathogens that use asexual single-celled flagellate zoospores for dispersal and plant infection. Many of the zoospore behaviors are density-dependent although the underlying mechanisms are poorly understood. Here, we use P. nicotianae as a model and demonstrate au...

journal_title：Phytopathology

authors： Kong P,Hong C

更新日期：2010-07-01 00:00:00

abstract：:In null hypothesis testing, failure to reject a null hypothesis may have two potential interpretations. One interpretation is that the treatments being evaluated do not have a significant effect, and a correct conclusion was reached in the analysis. Alternatively, a treatment effect may have existed but the conclusion...

journal_title：Phytopathology

authors： Gent DH,Esker PD,Kriss AB

更新日期：2018-01-01 00:00:00

abstract：:A weather-based disease prediction model for bacterial canker of kiwifruit (known worldwide as Psa; Pseudomonas syringae pv. actinidiae biovar 3) was developed using a new mechanistic scheme for bacterial disease forecasters, the multiplication and dispersal concept. Bacterial multiplication is estimated from a temper...

journal_title：Phytopathology

authors： Beresford RM,Tyson JL,Henshall WR

更新日期：2017-02-01 00:00:00

abstract：:Huanglongbing (HLB) or greening currently is the most devastating citrus disease worldwide. The fastidious phloem-colonizing bacterium 'Candidatus Liberibacter asiaticus' (CLas) is the causal agent of citrus HLB in Florida. Bactericides containing the active ingredient oxytetracycline (OTC) have been used in foliar sp...

journal_title：Phytopathology

authors： Li J,Pang Z,Duan S,Lee D,Kolbasov VG,Wang N

更新日期：2019-12-01 00:00:00

abstract：:To assess the diversity of Xanthomonas campestris spp. infecting crucifers in New York, 154 isolates were collected over 10 years across the state. The goal was to determine if isolates of the pathogen were overwintering in New York and serving as primary inoculum in subsequent years, or if novel isolates were enterin...

journal_title：Phytopathology

authors： Lange HW,Tancos MA,Carlson MO,Smart CD

更新日期：2016-02-01 00:00:00

abstract：:Bacterial leaf streak (BLS) of wheat, caused by Xanthomonas translucens pv. undulosa, has been a notable disease in Minnesota wheat fields over the past decade. Potential sources of the pathogen include infested seed and crop debris. Perennial weeds are also considered a possible inoculum source, but no surveys have b...

journal_title：Phytopathology

authors： Ledman KE,Curland RD,Ishimaru C,Dill-Macky R

更新日期：2020-11-23 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

abstract：:ABSTRACT Nonhost resistance is hypothesized to protect plants in a nonspecific manner. For highly specialized parasites, this hypothesis applies not only to distantly related plants but also to resistant congeners of the host species. Congeners of Populus spp. were hybridized to create two interspecific hybrid poplar ...

journal_title：Phytopathology

authors： Newcombe G

更新日期：2005-07-01 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：:Despite being the first closterovirus documented in grapevines (Vitis sp.), the molecular biology of Grapevine leafroll-associated virus 1 (GLRaV-1, genus Ampelovirus, family Closteroviridae) is still in its infancy. In this study, the complete genome sequence of two GLRaV-1 isolates was determined to be 18,731 (isola...

journal_title：Phytopathology

authors： Donda BP,Jarugula S,Naidu RA

更新日期：2017-09-01 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：: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 Strains of Ralstonia solanacearum have been shown to cause bacterial wilt in some, but not all, ecotypes of Arabidopsis thaliana. We demonstrate here that after inoculation of the leaves of resistant ecotype S96 with R. solanacearum strain Ps95 necrosis around the inoculation site rapidly appeared and no furt...

journal_title：Phytopathology

authors： Ho GD,Yang CH

更新日期：1999-08-01 00:00:00

abstract：:Moroccan watermelon mosaic virus (MWMV) represents an emerging threat to cucurbit production in the Mediterranean Basin. We sequenced the near complete genome of MWMV-SQ10_1.1, a cloned Spanish isolate. MWMV-SQ10_1.1 has the typical potyvirus genomic structure, and phylogenetic analysis showed that it shared a common ...

journal_title：Phytopathology

authors： Miras M,Juárez M,Aranda MA

更新日期：2019-05-01 00:00:00

abstract：:A growth assay in lemon juice and polymerase chain reaction amplifications using newly designed species-specific primers from endopolygalacturonase and β-tubulin genes rapidly differentiated isolates of the morphologically similar fruit sour rot pathogens Galactomyces citriaurantii and G. geotrichum. Isolates of both ...

journal_title：Phytopathology

authors： McKay AH,Förster H,Adaskaveg JE

更新日期：2012-05-01 00:00:00

abstract：:Xanthomonas oryzae pv. oryzicola is an important bacterial pathogen responsible for outbreaks of bacterial leaf streak (BLS) on rice, mostly occurring in Asia and parts of Africa. To better monitor epidemics and assess population structures, efficient tools that allow the precise identification and diagnosis of pathog...

journal_title：Phytopathology

authors： Zhao S,Poulin L,Rodriguez-R LM,Serna NF,Liu SY,Wonni I,Szurek B,Verdier V,Leach JE,He YQ,Feng JX,Koebnik R

更新日期：2012-10-01 00:00:00

abstract：:ABSTRACT Citrus Huanglongbing (HLB) is one of the most devastating diseases of citrus worldwide. The causal agent of HLB in Florida is thought to be 'Candidatus Liberibacter asiaticus'. In this work, we examined the responses of 30 different genotypes of citrus to Florida isolates of 'Ca. L. asiaticus' under controlle...

journal_title：Phytopathology

authors： Folimonova SY,Robertson CJ,Garnsey SM,Gowda S,Dawson WO

更新日期：2009-12-01 00:00:00