trans-Dominant Inhibition of Geminiviral DNA Replication by Bean Golden Mosaic Geminivirus rep Gene Mutants.

abstract：:ABSTRACT The capacity of the microflora in rockwool to suppress Pythium aphanidermatum, the causative agent of root and crown rot in cucumber, was assessed. Disease development of cucumber (Cucumis sativus) grown on rockwool was evaluated in an "ebb-and-flood" system with a recirculating nutrient solution after inocul...

journal_title：Phytopathology

authors： Postma J,Willemsen-de Klein MJ,van Elsas JD

更新日期：2000-02-01 00:00:00

abstract：:ABSTRACT Leaf rust and stripe rust, caused by Puccinia triticina and P. striiformis, respectively, are important diseases of wheat in many countries. In this study we sought to identify molecular markers for adult plant resistance genes that could aid in incorporating such durable resistance into wheat. We used a doub...

journal_title：Phytopathology

authors： Suenaga K,Singh RP,Huerta-Espino J,William HM

更新日期：2003-07-01 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：:The vacuolar H+-ATPases (V-ATPases) are conserved ATP-dependent proton pumps that acidify intracellular compartments in eukaryotic cells. The role of Cpvma1, a V-ATPase catalytic subunit A of Cryphonectria parasitica, was investigated by generating cpvma1-overexpressing and cpvma1-silenced strains. The mutant strains ...

journal_title：Phytopathology

authors： Li R,Bai S,He Y,Chen Q,Yao Y,Wang J,Chen B

更新日期：2019-08-01 00:00:00

abstract：:Forty-eight inbred lines of maize with varying levels of resistance to gray leaf spot (GLS) were artificially inoculated with Cercospora zeina and evaluated to characterize partial disease resistance in maize under field conditions from 2012 to 2014 across 12 environments in western Kenya. Eight measures of disease ep...

journal_title：Phytopathology

authors： Nyanapah JO,Ayiecho PO,Nyabundi JO,Otieno W,Ojiambo PS

更新日期：2020-10-01 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 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：: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：:Indicator species analysis (ISA) uses indices of an organism's relative abundance and occurrence to estimate the strength of its associations with a priori groups of interest and a simple randomization test to evaluate the probability of association. Because ISA values tend to be greatest when a species is both relati...

journal_title：Phytopathology

authors： Severns PM,Sykes EM

更新日期：2020-12-01 00:00:00

abstract：:Stripe rust is a major disease constraint of wheat production worldwide. Resistance to stripe rust was analyzed using 131 F6 recombinant inbred lines (RILs) derived from a cross between synthetic derived wheat line Soru#1 and wheat cultivar Naxos. The phenotype was evaluated in Mexico and Norway at both seedling and a...

journal_title：Phytopathology

authors： Zhang R,Singh RP,Lillemo M,He X,Randhawa MS,Huerta-Espino J,Singh PK,Li Z,Lan C

更新日期：2019-01-01 00:00:00

abstract：:ABSTRACT Genetic resistance often fails because a resistance-breaking (RB) pathogen genotype increases in frequency. On the basis of an analysis of cellular plant pathogens, it was recently proposed that the evolutionary potential of a pathogen is a major determinant of the durability of resistance. We test this hypot...

journal_title：Phytopathology

authors： García-Arenal F,McDonald BA

更新日期：2003-08-01 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：:Cercospora sojina causes frogeye leaf spot of soybean, which can cause serious economic losses in the United States. In this study, 132 C. sojina isolates were collected from six fields (from two counties, Cross and Crawford) in Arkansas. To determine mating type, a multiplex polymerase chain reaction assay was develo...

journal_title：Phytopathology

authors： Kim H,Newell AD,Cota-Sieckmeyer RG,Rupe JC,Fakhoury AM,Bluhm BH

更新日期：2013-10-01 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：:ABSTRACT In the present work ectophosphatase activities of three trypanosomatid parasites of plants were characterized using intact cells. Phytomonas françai, Phytomonas mcgheei, and Herpetomonas sp. hydrolyzed p-nitro-phenylphosphate at a rate of 5.40, 7.28, and 25.58 nmol Pi/mg of protein per min, respectively. Expe...

journal_title：Phytopathology

authors： Dutra PM,Rodrigues CO,Romeiro A,Grillo LA,Dias FA,Attias M,De Souza W,Lopes AH,Meyer-Fernandes JR

更新日期：2000-09-01 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：:ABSTRACT Comparison of a sampling of complementary DNA (cDNA) sequences from the Florida citrus tristeza virus (CTV) isolates T3 and T30 to the sequence of the genome of the Israeli isolate VT showed a relatively consistent or symmetrical distribution of nucleotide sequence identity in both the 5' and 3' regions of th...

journal_title：Phytopathology

authors： Hilf ME,Karasev AV,Albiach-Marti MR,Dawson WO,Garnsey SM

更新日期：1999-04-01 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：:Cucurbit downy mildew (CDM), caused by the obligate oomycete Pseudoperonospora cubensis, has resurged around the world during the past three decades. A new pathotype or genetic recombinant of P. cubensis have been suggested as possible reasons for the resurgence of CDM in the United States in 2004. In total, 22 isolat...

journal_title：Phytopathology

authors： Thomas A,Carbone I,Lebeda A,Ojiambo PS

更新日期：2017-06-01 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：:Candidatus Liberibacter asiaticus (CLas) is the predominant causal agent of citrus huanglongbing (HLB). The pathogen population size in local tissues and the whole plant are critical for the development of disease symptoms via pathogenicity factors and causing metabolic burden to the host. However, the total populatio...

journal_title：Phytopathology

authors： N C Vasconcelos F,Li J,Pang Z,Vincent C,Wang N

更新日期：2020-10-22 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：:To support the search for alternative, non-chemical plant disease control strategies, we present a review of the pathogen-suppressive effects of biochar, a product derived from agricultural and other organic wastes, used as a soil amendment. A wide range of biochar effects contribute to the control of root or foliar f...

journal_title：Phytopathology

authors： Poveda J,Martínez Gómez Á,Fenoll C,Escobar C

更新日期：2021-02-02 00:00:00

abstract：:Citrus canker, caused by Xanthomonas citri ssp. citri, is a serious disease that causes substantial economic losses to the citrus industry worldwide. The bactericide bismerthiazol has been used to control rice bacterial blight (X. oryzae pv. oryzae). In this paper, we demonstrate that bismerthiazol can effectively con...

journal_title：Phytopathology

authors： Yu X,Armstrong CM,Zhou M,Duan Y

更新日期：2016-07-01 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 Locations of silicon accumulation in rice leaves and its possible association with resistance to rice blast were investigated by electron microscopy and X-ray microanalysis. A blast-susceptible cultivar, Jinmi, and a partially resistant cultivar, Hwaseong, were grown under a hydroponic culture system with mod...

journal_title：Phytopathology

authors： Kim SG,Kim KW,Park EW,Choi D

更新日期：2002-10-01 00:00:00

abstract：:Soybean vein necrosis-associated virus has been linked to an emerging soybean disease in the United States and Canada. Virus distribution and population structure in major growing areas were evaluated. Data were employed to design and develop sensitive detection protocols, able to detect all virus isolates available i...

journal_title：Phytopathology

authors： Zhou J,Tzanetakis IE

更新日期：2013-09-01 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 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：: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