Detection of citrus huanglongbing-associated 'Candidatus Liberibacter asiaticus' in citrus and Diaphorina citri in Pakistan, seasonal variability, and implications for disease management.

abstract：:The recent rapid emergence of maize lethal necrosis (MLN), caused by coinfection of maize with Maize chlorotic mottle virus (MCMV) and a second virus usually from the family Potyviridae, is causing extensive losses for farmers in East Africa, Southeast Asia, and South America. Although the genetic basis of resistance ...

journal_title：Phytopathology

authors： Jones MW,Penning BW,Jamann TM,Glaubitz JC,Romay C,Buckler ES,Redinbaugh MG

更新日期：2018-06-01 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：:Chorismate mutase (CM) is a key enzyme in the shikimate pathway which is responsible for the synthesis of aromatic amino acids. There are two classes of CMs, AroQ and AroH, and several pathogenic bacteria have been reported to possess a subgroup of CMs designated AroQ(gamma). These CMs are usually exported to the peri...

journal_title：Phytopathology

authors： Degrassi G,Devescovi G,Bigirimana J,Venturi V

更新日期：2010-03-01 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：: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 The possibility that the Ht1 gene or genes tightly linked to Ht1 convey general resistance to races of Exserohilum turcicum that are virulent against Ht1 (i.e., residual resistance) could be useful in sweet corn where the Ht1 gene is present in many commercial hybrids and breeding populations. The objective o...

journal_title：Phytopathology

authors： Campaña A,Pataky JK

更新日期：2005-01-01 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：:Oat crown rust caused by Puccinia coronata f. sp. avenae is the most destructive foliar disease of cultivated oat. Characterization of genetic factors controlling resistance responses to Puccinia coronata f. sp. avenae in nonhost species could provide new resources for developing disease protection strategies in oat. ...

journal_title：Phytopathology

authors： Omidvar V,Dugyala S,Li F,Rottschaefer SM,Miller ME,Ayliffe M,Moscou MJ,Kianian SF,Figueroa M

更新日期：2018-12-01 00:00:00

abstract：:ABSTRACT A portion of the 18S ribosomal DNA (rDNA) gene, the internal transcribed spacers (ITS1 and ITS2), and the 5.8S rDNA gene were polymerase chain reaction-amplified from strains and field populations of Venturia inaequalis and assessed for genetic variation. A previously reported optional group I intron in the 1...

journal_title：Phytopathology

authors： Schnabel G,Schnabel EL,Jones AL

更新日期：1999-01-01 00:00:00

abstract：:ABSTRACT Infection of soybean (Glycine max) plants inoculated with particles of Alfalfa mosaic virus (AlMV) isolate 425 at 12 days after germination was monitored throughout the life cycle of the plant (vegetative growth, flowering, seed formation, and seed maturation) by western blot analysis of tissue samples. At 8 ...

journal_title：Phytopathology

authors： Fleysh N,Deka D,Drath M,Koprowski H,Yusibov V

更新日期：2001-10-01 00:00:00

abstract：:Pythium species are important soilborne pathogens occurring in the forest nursery industry of the Pacific Northwest. However, little is known about their genetic diversity or population structure and it is suspected that isolates are moved among forest nurseries on seedling stock and shared field equipment. In order t...

journal_title：Phytopathology

authors： Weiland JE,Garrido P,Kamvar ZN,Espíndola AS,Marek SM,Grünwald NJ,Garzón CD

更新日期：2015-05-01 00:00:00

abstract：:ABSTRACT We developed a rapid and miniaturized bioassay for screening large numbers of rhizosphere microorganisms for their ability to induce systemic resistance to bacterial leaf spot of radish caused by Xanthomonas campestris pv. armoraciae. In this bioassay, Pantoea agglomerans strain E278Ar controlled symptoms of ...

journal_title：Phytopathology

authors： Han DY,Coplin DL,Bauer WD,Hoitink HA

更新日期：2000-04-01 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：:ABSTRACT Biocontrol activity of Candida saitoana and its interaction with Botrytis cinerea in apple wounds were investigated. When cultured together, yeast attached to Botrytis sp. hyphal walls. In wounded apple tissue, C. saitoana restricted the proliferation of B. cinerea, multiplied, and suppressed disease caused b...

journal_title：Phytopathology

authors： El-Ghaouth A,Wilson CL,Wisniewski M

更新日期：1998-04-01 00:00:00

abstract：:ABSTRACT To follow the movement of Erwinia amylovora in plant tissue without dissection, this bacterium was marked with either the lux operon from Vibrio fischeri or the gfp gene from the jellyfish Aequorea victoria, both carried on multicopy plasmids and expressed under the control of the lac promoter from Escherichi...

journal_title：Phytopathology

authors： Bogs J,Bruchmüller I,Erbar C,Geider K

更新日期：1998-05-01 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：:ABSTRACT The recent development of molecular-based probes such as mono- and polyclonal antibodies, cloned phytoplasma DNA fragments, and phytoplasma-specific primers for polymerase chain reaction (PCR) has allowed for advances in detection and identification of uncultured phytoplasmas (formerly called mycoplasma-like ...

journal_title：Phytopathology

authors： Lee IM,Gundersen-Rindal DE,Bertaccini A

更新日期：1998-12-01 00:00:00

abstract：:Potato genotypes from a breeding population adapted to tropical highlands were analyzed for the stability of late blight resistance and also for marker-phenotype association. We harmonized the historical evaluation data, consisting of observations spanning 6 years from two field sites utilizing a resistance scale cons...

journal_title：Phytopathology

authors： Lindqvist-Kreuze H,Gastelo M,Perez W,Forbes GA,de Koeyer D,Bonierbale M

更新日期：2014-06-01 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：:Clavibacter michiganensis is a Gram-positive bacterial pathogen that proliferates in the xylem vessels of tomato, causing bacterial wilt and canker symptoms. Accurate detection is a crucial step in confirming outbreaks of bacterial canker and developing management strategies. A major problem with existing detection me...

journal_title：Phytopathology

authors： Thapa SP,O'Leary M,Jacques MA,Gilbertson RL,Coaker G

更新日期：2020-03-01 00:00:00

abstract：:ABSTRACT Genes for copper resistance, located on the chromosome of strain XvP26 of Xanthomonas axonopodis pv. vesicatoria, were transferred by conjugation to a recipient strain of the bacterium. The chromosomal gene transfer was verified by analyses of the genomes of donor, recipient, and putative transconjugants for ...

journal_title：Phytopathology

authors： Basim H,Stall RE,Minsavage GV,Jones JB

更新日期：1999-11-01 00:00:00

abstract：:ABSTRACT In 1980, over 90% of all plant-pathogenic pseudomonads and xanthomonads were lumped into Pseudomonas syringae and Xanthomonas campestris, respectively, as pathovars. The term "pathovar" was created to preserve the name of plant pathogens, but has no official standing in nomenclature. Proposals to elevate and ...

journal_title：Phytopathology

authors： Schaad NW,Vidaver AK,Lacy GH,Rudolph K,Jones JB

更新日期：2000-03-01 00:00:00

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：:Resistance genes are a major tool for managing crop diseases. The networks of crop breeders who exchange resistance genes and deploy them in varieties help to determine the global landscape of resistance and epidemics, an important system for maintaining food security. These networks function as a complex adaptive sys...

journal_title：Phytopathology

authors： Garrett KA,Andersen KF,Asche F,Bowden RL,Forbes GA,Kulakow PA,Zhou B

更新日期：2017-10-01 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 A major leaf rust (Puccinia triticina) resistance quantitative trait locus (QTL) (QLrP.sfr-7DS) previously has been described on chromosome 7DS in the winter wheat (Triticum aestivum) cv. Forno. It was detected in a population of single-seed descent (SSD) lines derived from the cross Arina x Forno. QLrP.sfr-7...

journal_title：Phytopathology

authors： Schnurbusch T,Bossolini E,Messmer M,Keller B

更新日期：2004-10-01 00:00:00

abstract：:Zebra chip (ZC) of potato is putatively caused by the fastidious, phloem-limited bacterium 'Candidatus Liberibacter solanacearum' (Lso), which is transmitted by the potato psyllid (Bactericera cockerelli). The disease, which significantly impacts both crop yield and quality, was first identified in the United States f...

journal_title：Phytopathology

authors： Rush CM,Workneh F,Rashed A

更新日期：2015-07-01 00:00:00

abstract：:Oomycetes are fungal-like pathogens that cause notorious diseases. Protecting crops against oomycetes requires regular spraying with chemicals, many with an unknown mode of action. In the 1990s, flumorph was identified as a novel crop protection agent. It was shown to inhibit the growth of oomycete pathogens including...

journal_title：Phytopathology

authors： Hua C,Kots K,Ketelaar T,Govers F,Meijer HJ

更新日期：2015-04-01 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 Sudden death syndrome (SDS) of soybean is caused by the soilborne Fusarium solani f. sp. glycines (synonym F. virguliforme). In a sequential approach, two multifactor factorial-design microplot experiments were conducted to investigate the effects of fungal infestation levels and soil moisture on both root ne...

journal_title：Phytopathology

authors： Xing L,Westphal A

更新日期：2006-07-01 00:00:00