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You searched for: Journal Plant pathology Remove constraint Journal: Plant pathology Publication Year 2009 Remove constraint Publication Year: 2009 Source 2009 v.58 no.4 Remove constraint Source: 2009 v.58 no.4
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1. Aggressiveness of Phytophthora infestans on detached potato leaflets in four Nordic countries

Author:
Lehtinen, A.; Andersson, B.; Le, V.H.; Nærstad, R.; Rastas, M.; Ketoja, E.; Hannukkala, A.O.; Hermansen, A.; Nielsen, B.J.; Hansen, J.G.; Yuen, J.
Source:
Plant pathology 2009 v.58 no.4 pp. 690-702
ISSN:
0032-0862
Subject:
Phytophthora infestans; Solanum tuberosum; cultivars; latent period; potatoes; sporangia; sporulation; virulence; Denmark; Finland; Norway; Scandinavia; Sweden
Abstract:
... Potato fields in Denmark, Finland, Norway and Sweden were sampled for single-lesion isolates of Phytophthora infestans. The aggressiveness of the isolates was determined on detached leaflets of potato cvs Bintje (susceptible) and Matilda (moderately resistant). The aggressiveness tests were carried out in the respective home countries of the isolates, with the exception of the Danish isolates. Fif ...
DOI:
10.1111/j.1365-3059.2009.02038.x

2. Assessment of blast disease resistance in transgenic PRms rice using a gfp-expressing Magnaporthe oryzae strain

Author:
Campos-Soriano, L.; San Segundo, B.
Source:
Plant pathology 2009 v.58 no.4 pp. 677-689
ISSN:
0032-0862
Subject:
Magnaporthe grisea; Magnaporthe oryzae; Oryza sativa; anamorphs; blast disease; confocal microscopy; corn; crops; cultivars; disease resistance; fungi; genes; green fluorescent protein; image analysis; leaves; mutants; pathogenicity; pathogens; rice; roots; transgenic plants; xylem vessels
Abstract:
... Rice blast caused by the fungus Magnaporthe oryzae (anamorph Pyricularia grisea) is one of the most devastating diseases of cultivated rice worldwide. In this study, a green fluorescent protein (gfp)-expressing M. oryzae strain was generated and used to investigate the infection process in a commercial rice cultivar. Expression of the gfp gene did not affect the pathogenicity of the M. oryzae tran ...
DOI:
10.1111/j.1365-3059.2009.02061.x

3. Contribution of host plant resistance and geographic distance to the structure of Potato virus Y (PVY) populations in pepper in northern Tunisia

Author:
Ben Khalifa, M.; Simon, V.; Marrakchi, M.; Fakhfakh, H.; Moury, B.
Source:
Plant pathology 2009 v.58 no.4 pp. 763-772
ISSN:
0032-0862
Subject:
Capsicum annuum; Potato virus Y; alleles; genetic variation; haplotypes; homozygosity; host plants; mixed infection; pepper; restriction fragment length polymorphism; viral morphology; virulence; viruses; Tunisia
Abstract:
... The genetic structure of Potato virus Y (PVY) populations was investigated in naturally-infected pepper (Capsicum annuum) fields, collected at eight different localities in northern Tunisia, where 23% of the sampled plants were homozygous for the pvr2¹ recessive resistance allele, while the other plants carried the dominant susceptibility allele pvr2⁺. Restriction fragment length polymorphism anal ...
DOI:
10.1111/j.1365-3059.2009.02064.x

4. Detection and molecular characterization of viruses associated with tomato yellow leaf curl disease in cucurbit crops in Jordan

Author:
Anfoka, G.; Haj Ahmad, F.; Abhary, M.; Hussein, A.
Source:
Plant pathology 2009 v.58 no.4 pp. 754-762
ISSN:
0032-0862
Subject:
Bemisia tabaci; Cucurbitaceae; DNA; Datura stramonium; Tomato yellow leaf curl Sardinia virus; Tomato yellow leaf curl virus; crops; cucumbers; leaf curling; leaves; polymerase chain reaction; squashes; tomatoes; viruses; watermelons; Jordan
Abstract:
... In this study, Tomato yellow leaf curl Sardinia virus (TYLCSV) and the strains Israel and Mild of Tomato yellow leaf curl virus (TYLCV-IL, TYLCV-Mld) were detected for the first time in four cucurbit crops in Jordan by nested polymerase chain reaction (nPCR). These viruses cause the tomato yellow leaf curl disease (TYLCD) in tomato. Cucumber, squash, melon and watermelon plants inoculated with TYL ...
DOI:
10.1111/j.1365-3059.2009.02060.x

5. Development of an international standard set of barley differential genotypes for Pyrenophora teres f. teres

Author:
Afanasenko, O.S.; Jalli, M.; Pinnschmidt, H.O.; Filatova, O.; Platz, G.J.
Source:
Plant pathology 2009 v.58 no.4 pp. 665-676
ISSN:
0032-0862
Subject:
Pyrenophora teres; algorithms; barley; cluster analysis; cultivars; genotype; net blotch; virulence; Australia; Canada; Russia
Abstract:
... International comparison of virulence profiles of Pyrenophora teres f. teres (Ptt), the cause of barley net blotch, is seriously restricted by inconsistencies in differential testers used among researchers. This paper reports an attempt to develop an appropriate set of differentials to standardize characterization of Ptt populations globally. Fourteen barley genotypes (Canadian Lake Shore (CLS), H ...
DOI:
10.1111/j.1365-3059.2009.02062.x

6. Ethnopathology: local knowledge of plant health problems in Bangladesh, Uganda and Bolivia

Author:
Bentley, J.W.; Boa, E.R.; Kelly, P.; Harun-Ar-Rashid, M.; Rahman, A.K.M.; Kabeere, F.; Herbas, J.
Source:
Plant pathology 2009 v.58 no.4 pp. 773-781
ISSN:
0032-0862
Subject:
common names; farmers; fish; human health; mammals; plant health; poultry meat; scientists; seafoods; Bangladesh; Bolivia; Uganda
Abstract:
... All peoples have names for and knowledge of plants, animals and other things in the real world. An ethnopathology (or, more strictly, 'ethnophytopathology') - study in Bangladesh, Uganda and Bolivia revealed that smallholder farmers label plant health problems with meaningful names. A local name for a plant health problem typically has two kinds of meaning. The first is a literal translation of th ...
DOI:
10.1111/j.1365-3059.2009.02040.x

7. Evidence for hyperparasitism of coffee rust (Hemileia vastatrix) by the entomogenous fungus, Lecanicillium lecanii, through a complex ecological web

Author:
Vandermeer, J.; Perfecto, I.; Liere, H.
Source:
Plant pathology 2009 v.58 no.4 pp. 636-641
ISSN:
0032-0862
Subject:
Azteca; Coccus viridis; Hemileia vastatrix; Lecanicillium lecanii; entomopathogenic fungi; hyperparasitism; leaf rust; mutualism; parasites; scale insects
Abstract:
... The entomogenous fungus, Lecanicillium lecanii is hyperparasitic on Hemileia vastatrix, the cause of coffee leaf rust in the laboratory, and has frequently been observed attacking it in the field. The existence of a complex ecological web involving the spatially clustered mutualism of an ant (Azteca instabilis) with a scale insect (Coccus viridis), where the scale insect was infected by L. lecanii ...
DOI:
10.1111/j.1365-3059.2009.02067.x

8. Evidence for inbreeding and apomixis in close crosses of Phytophthora capsici

Author:
Hurtado-Gonzales, O.P.; Lamour, K.H.
Source:
Plant pathology 2009 v.58 no.4 pp. 715-722
ISSN:
0032-0862
Subject:
Phytophthora capsici; amplified fragment length polymorphism; apomixis; backcrossing; genetic traits; genetic variation; heterozygosity; inbred lines; inbreeding; inheritance (genetics); plant pathogens; progeny; selfing
Abstract:
... A series of inbreeding crosses, recurrent backcrosses and successive sibling crosses were completed up to the sixth generation in the plant pathogen Phytophthora capsici, generating a total of 692 oospore-derived isolates. All of the crosses stemmed from an initial mating between two wild-type P. capsici isolates. The heterozygosity level, as measured through the inheritance of 20 amplified fragme ...
DOI:
10.1111/j.1365-3059.2009.02059.x

9. Evidence of pAgK84 transfer from Agrobacterium rhizogenes K84 to natural pathogenic Agrobacterium spp. in an Italian peach nursery

Author:
Raio, A.; Peluso, R.; Puopolo, G.; Zoina, A.
Source:
Plant pathology 2009 v.58 no.4 pp. 745-753
ISSN:
0032-0862
Subject:
Agrobacterium; Rhizobium rhizogenes; Southern blotting; antagonists; apricots; bacteria; biological control; crown galls; genetic transformation; metabolism; neoplasms; nucleic acid hybridization; pathogens; peaches; plasmids; restriction fragment length polymorphism; ribotypes; rootstocks; screening; soil; virulence
Abstract:
... Nine Italian peach nurseries, which use Agrobacterium rhizogenes strain K84 to protect plants from crown gall, were monitored for three years with the aim of determining whether transconjugant populations may arise following plasmid exchanges between K84 and autochtonous soil agrobacteria. Six hundred and seventy-eight Agrobacterium isolates were obtained from 120 tumours developed on apricot and ...
DOI:
10.1111/j.1365-3059.2009.02063.x

10. Fungicide sensitivity in Swedish isolates of Phaeosphaeria nodorum

Author:
Blixt, E.; Djurle, A.; Yuen, J.; Olson, Å.
Source:
Plant pathology 2009 v.58 no.4 pp. 655-664
ISSN:
0032-0862
Subject:
malt extract; DNA fragmentation; normal values; Parastagonospora nodorum; azoxystrobin; cyprodinil; amino acid substitution; propiconazole; triazoles; genes; cytochrome b; winter wheat; fungi; Sweden
Abstract:
... This is the first report of variability in sensitivity of Phaeosphaeria nodorum to the fungicide azoxystrobin, and also reports on sensitivity to propiconazole, prothioconazole and cyprodinil. An in vitro sensitivity test of 42 isolates from five Swedish winter wheat fields, collected in 2003-2005, was performed on malt extract agar amended with six concentrations of each fungicide. Four isolates ...
DOI:
10.1111/j.1365-3059.2009.02041.x

11. Infection and disease development of Quambalaria spp. on Corymbia and Eucalyptus species

Author:
Pegg, G.S.; Webb, R.I.; Carnegie, A.J.; Wingfield, M.J.; Drenth, A.
Source:
Plant pathology 2009 v.58 no.4 pp. 642-654
ISSN:
0032-0862
Subject:
stomatal movement; germination; Corymbia; conidia; Eucalyptus; relative humidity; stems; conidiophores; hosts; hyphae; pathogens; transmission electron microscopy; Quambalaria; stomata; juveniles
Abstract:
... Quambalaria spp. are eucalypt leaf and shoot pathogens of growing global importance, yet virtually nothing is known regarding the manner in which they infect and colonize their hosts. A study of the infection process of Q. pitereka and Q. eucalypti on Corymbia and Eucalyptus species was thus undertaken using light, scanning and transmission electron microscopy after artificial inoculation. Conidia ...
DOI:
10.1111/j.1365-3059.2009.02087.x

12. Infection of horse chestnut (Aesculus hippocastanum) by Pseudomonas syringae pv. aesculi and its detection by quantitative real-time PCR

Author:
Green, S.; Laue, B.; Fossdal, C.G.; A'Hara, S.W.; Cottrell, J.E.
Source:
Plant pathology 2009 v.58 no.4 pp. 731-744
ISSN:
0032-0862
Subject:
Aesculus hippocastanum; DNA; DNA primers; Pseudomonas syringae pv. aesculi; bacteria; cankers (plants); horse diseases; nucleotide sequences; pathogenicity; pathogens; phloem; quantitative polymerase chain reaction; saplings; xylem; Europe
Abstract:
... Pseudomonas syringae pv. aesculi is a pathogenic bacterium causing bleeding canker disease of horse chestnut (Aesculus hippocastanum). This is a serious disease which has been affecting horse chestnut in several European countries over the last five years; however, very little is known about the biology of the causal agent. One of the obstacles to studying this pathogen is the lengthy procedure as ...
DOI:
10.1111/j.1365-3059.2009.02065.x

13. Influence of competition and host plant resistance on selection in Phytophthora infestans populations in Michigan, USA and in Northern Ireland

Author:
Young, G.K.; Cooke, L.R.; Kirk, W.W.; Tumbalam, P.; Perez, F.M.; Deahl, K.L.
Source:
Plant pathology 2009 v.58 no.4 pp. 703
ISSN:
0032-0862
Subject:
Solanum tuberosum; potatoes; cultivars; disease resistance; host-pathogen relationships; Phytophthora infestans; plant pathogenic fungi; genetic variation; pathogenicity; Michigan; Northern Ireland
Abstract:
... Competition between genotypes of Phytophthora infestans was studied by inoculating potato cultivars with differing susceptibility to late blight in field experiments over three years in Northern Ireland, UK, and Michigan, USA. Multiple isolates of six genotype groups of P. infestans were chosen from the local populations in both N. Ireland and Michigan for inoculation of separate field trials plan ...
Handle:
10113/35876
DOI:
10.1111/j.1365-3059.2009.02043.x

14. Management of phytophthora root rot in radiata pine seedlings

Author:
Reglinski, T.; Spiers, T.M.; Dick, M.A.; Taylor, J.T.; Gardner, J.
Source:
Plant pathology 2009 v.58 no.4 pp. 723-730
ISSN:
0032-0862
Subject:
Phytophthora cactorum; Pinus radiata; Trichoderma; application rate; coatings; disease control; disease incidence; foliar application; forest nurseries; methyl jasmonate; phosphorous acid; pruning; root rot; seed dressings; seedling emergence; seedlings; thiram; New Zealand
Abstract:
... Chemical and biological agents were evaluated for their ability to suppress root rot, caused by Phytophthora cactorum, in field-grown radiata pine seedlings in New Zealand. Trials were conducted over two seasons in an area of a forest nursery with a natural infestation of P. cactorum, and a history of root rot. In each season, symptoms of root rot developed during April, one month after root pruni ...
DOI:
10.1111/j.1365-3059.2009.02021.x

15. Rathayibacter iranicus isolated from symptomless wheat seeds in Turkey

Author:
Postnikova, E.; Agarkova, I.; Altundag, S.; Eskandari, F.; Sechler, A.; Karahan, A.; Vidaver, A.K.; Schneider, W.; Ozakman, M.; Schaad, N.W.
Source:
Plant pathology 2009 v.58 no.4 pp. 796
ISSN:
0032-0862
Subject:
Triticum aestivum; wheat; seeds; Rathayibacter iranicus; plant pathogenic bacteria; bacterial diseases of plants; Turkey (country)
DOI:
10.1111/j.1365-3059.2009.02076.x

16. Techniques for the treatment, removal and disposal of host material during programmes for plant pathogen eradication

Author:
Sosnowski, M.R.; Fletcher, J.D.; Daly, A.M.; Rodoni, B.C.; Viljanen-Rollinson, S.L.H.
Source:
Plant pathology 2009 v.58 no.4 pp. 621-635
ISSN:
0032-0862
Subject:
Citrus; Plum pox virus; Venturia inaequalis; bananas; biofumigation; black Sigatoka; burning; composting; crops; epidemiology; fungi; gardens; host plants; host-pathogen relationships; plant pathogens; plant protection; pruning; smut diseases; soil; steam; vector control; Australasian region
Abstract:
... Eradication of plant pathogen incursions is very important for the protection of plant industries, managed gardens and natural environments worldwide. The consequence of a pathogen becoming endemic can be serious, in some cases having an impact on the national economy. The current strategy for eradication of a pathogen relies on techniques for the treatment, removal and disposal of affected host p ...
DOI:
10.1111/j.1365-3059.2009.02042.x