Volume 54, 2005 Plant Pathology {bp An international journal edited by the Se BSPP aa British Society for Plant Pathology Senior Editor R. Shattock Volume Contents @ Blackwell Publishing ISSN 0032-0862 Volume 54, 2005 Plant Pathology {bp An international journal edited by the Se BSPP aa British Society for Plant Pathology Senior Editor R. Shattock Volume Contents @ Blackwell Publishing ISSN 0032-0862 Published by Blackwell Publishing Ltd Typeset by Graphicraft Limited, Hong Kong Printed by Singapore by HO Printing Pte Ltd ©2005 British Society for Plant Pathology. All rights reserved. With the exception of fair dealing for the purposes of research or private study, or criticism or review, no part of this publication may be reproduced, stored or transmitted in any form or by any means without the prior permission in writing from the copyright holder. 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Editorial Offices: Blackwell Publishing Ltd, 9600 Garsington Road, Oxford OX4 2DQ, UK Blackwell Publishing Asia, 550 Swanston Street, Carlton South, Victoria 3053, Australia Blackwell Verlag, Kurfiirstendamm 58, D-10707 Berlin, Germany Blackwell Publishing Japan/Blackwell Publishing Asia, Tokyo Office, SF, GS Chiyoda Building, 3-11-14 lidabashi, Chiyoda-ku, Tokyo 102-0072, Japan Blackwell Publishing Inc., Commerce Place, 350 Main Street, Malden MA 02148-5 : Blackwell Munksgaard, 1 Rosenorns Allé, PO Box 227, DK-1502 Copenhagen V, Denmark Blackwell Publishing Professional, 2121 S State Avenue, Ames, IA 50014-8300, USA ISSN 0032-0862 Volume contents Contents NUMBER 1 FEBRUARY 108 F. Kleitman, D. Shtienberg, D. Blachinsky, D. Oppenheim, M. Zilberstaine, O. Dror & Original Articles §. Manulis. Erwinia amylovora populations resistant to oxolinic acid in Israel: prevalence, persistence and M. Fatmi, V. D. Damsteegt & N. W. Schaad. A fitmess combined agar-absorption and BIO-PCR assay for V. Caffier & F. Laurens. Breakdown of P12, a major rapid, sensitive detection of Xylella fastidiosa in grape gene of resistance to apple powdery mildew, in a and citrus French experimental orchard C. Streten & K. S. Gibb. Genetic variation in A. Urbanietz & F. Dunemann. Isolation, identification Candidatus Phytoplasma australiense and molecular characterization of physiological races O. H. Sun, J. Hu, G. X. Huang, C. Ge, of apple powdery mildew (Podosphaera leucotricha) R. X. Fang & C. Z. He. Type-II secretion pathway L. Chartrain, P. A. Brading & ]. K. M. Brown. structural gene xpsE, xylanase- and cellulase secretion Presence of the Stb6 gene for resistance to septoria and virulence in Xanthomonas oryzae pv. oryzae tritici blotch (Mycosphaerella graminicola) in cultivars P. van de Graaf, A. K. Lees, S. ]. Wale & J. M. Duncan. Effect of soil inoculum level and used in wheat-breeding programmes worldwide environmental factors on potato powdery scab caused A. M. Wan, C. H. Bock, B. D. L. Fitt, ]. L. Harvey & ]. F. Jenkyn. Development of Oculimacula yallundae by Spongospora subterranea and O. acuformis (eyespot) on leaf sheaths of winter L. Galipienso, M. C. Herranz, V. Pallas © J. Aramburu. Detection of a tomato strain of Parietaria wheat in the UK in relation to thermal time mottle virus (PMoV-T) by molecular hybridization and J. M. Brennan, D. Egan, B. M. Cooke & RT-PCR in field samples from north-eastern Spain F. M. Dooban. Effect of temperature on head blight M. P. A. Coetzee, B. D. Wingfield, T. Kirisits, of wheat caused by Fusarium culmorum and D. B. Chhetri, P. Bloomer & M. ]. Wingfield. F. graminearum Identification of Armillaria isolates from Bhutan based I. G. Pascoe, M. J. Priest, R. G. Shivas © on DNA sequence comparisons ]. H. Cunnington. Ustilospores of Tilletia ebrhartae, a smut of Ehrharta calycina, are common contaminants H. Britz, T. A. Coutinho, B. D. Wingfield, of Australian wheat grain, and a potential source of W. F. O. Marasas & M. J]. Wingfield. Diversity and differentiation in two populations of Gibberella confusion with Tilletia indica, the cause of Karnal bunt circinata in South Africa of wheat G. M. T. Arruda, R. N. G. Miller, J. G. Hansen, M. Koppel, A. Valskyte, I. Turka © M. A. S. V. Ferreira & A. C. Café-Filho. J. Kapsa. Evaluation of foliar resistance in potato to Morphological and molecular characterization Phytophthora infestans based on an international field of the sudden-death syndrome pathogen of soybean trial network in Brazil X. Meng, C. R. Grau & W. Chen. Cultivar preference L. Leisova, L. Kucera, V. Minarikova & J. Ovesna. exhibited by two sympatric and genetically distinct AFLP-based PCR markers that differentiate spot and populations of the soybean fungal pathogen net forms of Pyrenophora teres Phialophora gregata f.sp. sojae A. Amiri & G. Bompeix. Diversity and population I. Barnes, G. Nakabonge, ]. Roux, B. D. Wingfield & dynamics of Penicillium spp. on apples in pre- and M. ]. Wingfield. Compavison of populations of the wilt postharvest environments: consequences for decay pathogen Ceratocystis albifundus in South Africa and development Uganda O. Blechert & T. Debener. Morphological N. Bharathan, H. Saso, L. Gudipati, 8. Bharathan, characterization of the interaction between K. Whited & K. Anthony. Double-stranded RNA: Diplocarpon rosae and various rose species distribution and analysis among isolates of Rhizoctonia Book review solani AG-2 to -13 G. QO. Li, H. C. Huang, S. N. Acharya @ R. S. Erickson. Effectiveness of Coniothyrium minitans and Trichoderma atroviride in suppression of sclerotinia blossom blight of alfalfa NUMBER 2 APRIL K. L. McLean, J. Swaminathan, C. M. Frampton, J. S. Hunt, H. ]. Ridgway & A. Stewart. Effect of Original Articles formulation on the rhizosphere competence and M. Jacquet, M. Bongiovanni, M. Martinez, biocontrol ability of Trichoderma atroviride C52 P. Verschave, E. Wajnberg & P. Castagnone-Sereno. K. De Jonghe, I. De Dobbelaere, R. Sarrazyn © Variation in resistance to the root-knot nematode M. Hofte. Control of Phytophthora cryptogea in the Meloidogyne incognita in tomato genotypes bearing hydroponic forcing of witloof chicory with the the Mi gene rhamnolipid-based biosurfactant formulation M. Stevens, N. J. Patron, C. A. Dolby, R. Weekes, PRO1 P. B. Hallsworth, O. Lemaire & H. G. Smith. C. Y. He & D. J]. Wolyn. Potential role for salicylic Distribution and properties of geographically acid in induced resistance of asparagus roots to distinct isolates of sugar beet yellowing viruses Fusarium oxysporum f.sp. asparagi Volume contents > New Disease Reports S. Soylu, S. Kurt, E. M. Soylu & F. M. Tok. First Y. Arocha, D. Horta, B. Pinol, I. Palenzuela, report of alternaria leaf blight caused by Alternaria S. Picornell, R. Almeida & P. Jones. First report of a dauci on carrot in Turkey phytoplasma associated with Bermuda-grass white leaf ]. Huang, L. Zheng & I. Hsiang. First report of leaf disease in Cuba spot caused by Curvularia verruculosa on Cynodon sp. P. Jones, Y. Arocha, O. Antesana, E. Montellano & in Hubei, China P. Franco. ‘Brotes grandes’ (big bud) of potato: a new H. B. Lee, J. Y. Park & H. S. Jung. First report of leaf disease associated with a 16SrlI-B subgroup anthracnose caused by Colletotrichum boninense on phytoplasma in Bolivia spindle trees P. Jones, Y. Arocha, O. Antesana, E. Montellano © A. K. Singh, V. Hallan, N. Verma & A. A. Zaidi. P. Franco. ‘Hoja de perejil’ (parsley leaf) of tomato Natural occurrence of Lily symptomless virus on and morrenia little leaf, two new diseases associated spider lily with a phytoplasma in Bolivia N. Verma, L. Singh, A. K. Singh, S. Kulshrestha, B. Milkus, D. Clair, S. Idir, N. Habili & ikhy, V. Hallan, R. Ram & A. A. Zaidi. E. Boudon-Padieu. First detection of stolbur Ornithogalum: a new host of Cucumber mosaic virus phytoplasma in grapevines (Vitis vinifera cv. CMV) from India Chardonnay) affected with grapevine yellows in the R. K, Jain, S. Bag & L. P. Awasthi. First report of Ukraine natural infection of Capsicum annuum by Tobacco R. Jomantiene & R. E. Davis. Apple sessile leaf: a new streak virus in India disease associated with a ‘Candidatus Phytoplasma C.-¥. Li @ Y.-C. Chang. First identification of asteris’ subgroup 16Srl-B phytoplasma in Lithuania Tobacco mild green mosaic virus on Capsicum M. Mirik, S. Baloglu, Y. Aysan, R. Cetinkaya-Yildiz, annuum in Taiwan M. Kusek & F. Sabin. First outbreak and occurrence of 1. Roubibakhsh & V. G. Malathi. Severe leaf curl citrus blast disease, caused by Pseudomonas syringae disease of cowpea — a new disease of cowpea in pv. syringae, on orange and mandarin trees in Turkey northern India caused by Mungbean yellow mosaic Y.-A. Lee, K.-P. Chen & Y.-C. Chang. First report of and a satellite DNA B bacterial leaf blight of white-flowered calla lily caused Amrao, M. S. Mansoor, A. H. Malik, by Xanthomonas campestris pv. zantedeschiae in Briddon & Y. Zafar. First report of a Taiwan novirus associated with leaf curl disease of H. Basim, E. Basim, S. Yilmaz & M. Ilkucan. First report of pith necrosis of tomato caused by , K. Ohshima, R. Pourrahim, Pseudomonas mediterranea in Turkey raghi, S. Jalali @ A. Aboonmanesh. H. B. Sert & H. Siimbiil. First report of Occurrence of Turnip mosaic virus on ornamental Melampsoridium hiratsukanum infecting alder (Alnus crops in Iran orientalis var. orientalis) in Turkey 262 H. Delatte, H. Holota, F. Naze, M. Peterschmitt, B. Henricot & G. Denton. First record of the rust B. Reynaud c& J. M. Lett. The presence of both Puccinia lagenophorae on Emilia spp. in the UK recombinant and nonrecombinant strains of C. R. Lane, P. A. Beales, T. M. O’Neill, Tomat leaf ri url virus On tomato in M. McPherson, A. R. Finlay, ]. David, Réunion Island > O. Constantinescu & B. Henricot. First report of 263 L. Tomassoli, A. Zac« -aria & M. Barba. Capparis Impatiens downy mildew (Plasmopara obducens) in spinosa a new host of ( ucumber mosaic virus in the UK Italy K. Elena. Fusarium wilt of Phoenix canariensis: first , B. Garcia, I. Hita & V. Padilla. Detection report in Greece virus B associated with rugose wood S. Al-Babry, A. E. Elshafie, M. Deadman, A. Al Sa’di, corky bark) symptoms in grapevine cv. Napoleon in A. Al Raeesi & Y. Al Magbali. First report of Murcia (Spain Ganoderma colossum on Ficus altissima and Delonix regia in Oman M. P. Fortune, S. Gosine, 8S. Chow, A. Dilbar, NUMBER 3 A. St. Hill, H. Gibbs & N. Rambaran. First report of black sigatoka disease (causal agent Mycosphaerella Original Articles fijiensis) from Trinidad 265 P. H. Thrall, L. G. Barrett, ]. ]. Burdon & M. Sisterna & L. Ronco. Occurrence of grapevine leaf H. M. Alexander. Variation in pathogen aggressiveness spot caused by Pseudocercospora vitis in Argentina within a metapopulation of the Cakile M. L. Putnam. Allantophomopsis lycopodina - a new maritima—Alternaria brassicicola host-pathogen aerial pathogen of lingonberry (Vaccinium vitis-idaea association H. B. Sert & H. Siimbiil. First report of leaf spot 275 K. J]. Evans, M. K. Jones & R. T. Roush. Susceptibility caused by Phoma sorghina on Trifolium campestre in of invasive taxa of European blackberry to rust disease Turkey caused by the uredinial stage of Phragmidium violaceum L. Vajna & G. Oros. First report of Rhizoctonia zeae under field conditions in Australia on Lolium perenne and Festuca sp. in Hungary 28 D. Rime, C. Robert, H. Goyeau & C. Lannou. Effect S. Kurt, E. M. Soylu, S. Soylu & F. M. Tok. First of host genotype on leaf rust (Puccinia triticina) lesion report of crater rot caused by Rhizoctonia carotae on development and urediniospore production in wheat carrots (Daucus carota) in Turkey seedlings Volume contents G. L. Bateman. The contribution of ground-level NUMBER 4 AUGUST inoculum of Fusarium culmorum to ear blight of winter wheat Original Articles A. L. Li, M. L. Wang, R. H. Zhou, X. Y. Kong, D. Rowland, J]. Dorner, R. Sorensen, J. P. Beasley Jr & N. X. Huo, W. S. Wang & J. Z. Jia. Comparative J]. Todd. Tomato spotted wilt virus in peanut tissue analysis of early H,O, accumulation in compatible and types and physiological effects related to disease incompatible wheat-powdery mildew interactions incidence and severity U. Matolepsza. Spatial and temporal variation of H. Krecic-Stres, C. Vucak, M. Ravnikar & M. Kovae. reactive oxygen species and antioxidant enzymes in Systemic Potato virus YNTN infection and levels of o-hydroxyethylorutin-treated tomato leaves inoculated salicylic and gentisic acids in different potato with Botrytis cinerea genotypes R. C. Fenille, M. B. Ciampi, N. L. Souza, M. Ala-Poikela, E. Svensson, A. Rojas, T. Horko, A. K. Nakatani & E. E. Kuramae. Binucleate L. Paulin, J]. P. T. Valkonen & A. Kvarnheden. Rhizoctonia sp. AG G causing root rot in yacon Genetic diversity and mixed infections of (Smallanthus sonchifolius) in Brazil begomoviruses infecting tomato, pepper and cucurbit O. Santamaria, F. M. Alves-Santos & J. J. Diez. crops in Nicaragua Genetic characterization of Gremmeniella abietina var. C. A. Rodas, M. Gryzenhout, H. Myburg, abietina isolates from Spain B. D. Wingfield & M. ]. Wingfield. Discovery of the D. J. Vakalounakis, A. G. Doulis & E. Klironomou. Eucalyptus canker pathogen Chrysoporthe cubensis Characterization of Fusarium oxysporum f. sp. on native Miconia (Melastomataceae) in Colombia radicis-cucumerinum attacking melon under natural G. Herve, B. Bertrand, L. Villain, D. Licardie & conditions in Creece C. Cilas. Distribution analyses of Meloidogyne spp. X. M. Xu & J]. Robinson. Modelling the effects of and Pratylenchus coffeae sensu lato in coffee plots wetness duration and fruit maturity on infection of in Costa Rica and Guatemala apple fruits of Cox’s Orange Pippin and two clones of F, Anthony, P. Topart, A. Martinez, M. Silva & Gala by Venturia inaequalis M. Nicole. Hypersensitive-like reaction conferred by B.-H. Li, X.-M. Xu, J.-T. Li & B.-D. Li. Effects of the Mex-1 resistance gene against Meloidogyne exigua temperature and continuous and interrupted wetness in coffee on the infection of pear leaves by conidia of Venturia W. Phillips-Mora, ]. Castillo, U. Krauss, E. Rodriguez nashicola c M. ]. Wilkinson. Evaluation of cacao (Theobroma G. A. Forbes, M. G. Chacon, H. G. Kirk, cacao) clones against seven Colombian isolates of M. A. Huarte, M. Van Damme, S. Distel, Moniliophthora roreri from four pathogen genetic G. R. Mackay, H. E. Stewart, R. Lowe, ]. M. Duncan, groups H. S. Mayton, W. E. Fry, D. Andrivon, D. Ellisséche, C. Pillinger, N. Paveley, M. J. Foulkes & J. Spink. R. Pellé, H. W. Platt, G. MacKenzie, T. R. Tarn, Explaining variation in the effects of take-all L. T. Colon, D. J]. Budding, H. Lozoya-Saldana, (Gaeumannomyces graminis var. tritici) on A. Hernandez-Vilchis & S. Capezio. Stability of nitrogen and water uptake by winter wheat resistance to Phytophthora infestans in potato: an U. Jonsson, T. Jung, K. Sonesson & U. Rosengren. international evaluation Relationships between health of Quercus robur, S. Hussain, A. K. Lees, ]. M. Duncan © occurrence of Phytophthora species and site conditions D. E. L. Cooke. Development of a species-specific and in southern Sweden sensitive detection assay for Phytophthora infestans S$. Denman, S. A. Kirk, C. M. Brasier & ]. F. Webber. and its application for monitoring of inoculum in In vitro leaf inoculation studies as an indication of tree tubers and soil foliage susceptibility to Phytophthora ramorum in the C. Pasco, B. Jouan & D. Andrivon. Resistance of UK potato genotypes to common and netted scab-causing D. Gobbin, M. Jermini, B. Loskill, I. Pertot, species of Streptomyces M. Raynal & C. Gessler. Importance of secondary C. R. Wilson, J. A. deLittle, J. A. L. Wong, inoculum of Plasmopara viticola to epidemics of P. J. Schupp & L. J. Gibson. Adjustment of grapevine downy mildew soil-surface pH and comparison with conventional J]. Rumbolz & W. D. Gubler. Susceptibility of fungicide treatments for control of lettuce drop grapevine buds to infection by powdery mildew (Sclerotinia minor) Erysiphe necator G. K. Kishore, S. Pande & A. R. Podile. Management A. Collins, ]. Mercado-Blanco, R. M. Jiménez-Diaz, of late leaf spot of groundnut (Arachis hypogaea) with C. Olivares, E. Clewes & D. ]. Barbara. Correlation of chlorothalonil-tolerant isolates of Pseudomonas molecular markers and biological properties in aeruginosa Verticillium dahliae and the possible origins of some S. Kaewnum, S. Prathuangwong & T. J. Burr. isolates Aggressiveness of Xanthomonas axonopodis pv. glycines isolates to soybean and hypersensitivity New Disease Reports responses by other plants P. Jones, Y. Arocha, O. Antesana, E. Montilliano & T. Berg, L. Tesoriero & D. L. Hailstones. PCR-based P. Franco. First report of an isolate of ‘Candidatus detection of Xanthomonas campestris pathovars in Phytoplasma australiense’ associated with a yellow Brassica seed leaf roll disease of peach (Prunus persicae) in Book reviews Bolivia Volume contents P. Jones, Y. Arocha & G. Plata. First report of a M. Piatek. First report of powdery mildew of ‘Candidatus Phytoplasma asteris’ isolate associated Ligustrum caused by Erysiphe syringae-japonicae with a witches’ broom disease of alfalfa in Bolivia D. J. Soares & R. W. Barreto. First report of Oidium A. Gera, M. Mawassi, M. Zeidan, S. Spiegel & piperis on Piper aduncum in Brazil M. Bar-Joseph. An isolate of ‘Candidatus Phytoplasma S. Green. First report of Septoria betulae causing leaf australiense’ group associated with Nivun Haamir spot of birch in the UK dieback disease of papaya in Israel S. Denman, S. A. Kirk, C. M. Brasier, K. ]. D. Hughes, D. Ranéicé, S. Paltrinieri, I. Tosevski, R. Petanovic, R. Griffin, E. Hobdon & J. F. Webber. Foliar infection B. Stevanovié & A. Bertaccini. First report of multiple of sweet chestnut (Castanea sativa) by Phytophthora inflorescence disease of Cirsium arvense and its ramorum in the UK association with a 16SrIlI-B subgroup phytoplasma in 4. Schlenzig. First report of Phytophthora inflata on Serbia nursery plants of Rhododendron spp., Gaultheria I. E. Tzanetakis, I. C.M ackey & R. R. Martin. Tulip shalon and Vaccinium vitis-idaea in Scotland virus X (TVX) associated with lemon balm (Melissa P. Tsopelas & K. Nikolaou. First report of officinalis) variegation: first report of TVX in the USA Heterobasidion annosum in Cyprus M. Saqib, R. A. C. Jones, B. Cayford & E. Cakir. First report of potato wart disease in M. G. K. Jones. First report of Bean common mosaic Turkey virus in Western Australia R. L. Gilbert, B. A. Auld & B. R. Hennecke. Leaf and M. Ciuffo, M. M. Finetti-Sialer, D. Gallitelli & stem spot of Alternanthera philoxeroides M. Turina. First report in Italy of a resistance-breaking alligatorweed) in Australia caused by Nimbya sp. strain of Tomato spotted wilt virus infecting tomato cultivars carrying the Sw5 resistance gene M. Ciuffo, D. Pettiti, S. Gallo, V.M asenga © M. Turina. First report of Blueberry scorch virus in NUMBER 5 OCTOBER Europe J. Aramburu & L. Galipienso. First report in Spain of Review Article a variant of Tomato mosaic virus (TOoMV) overcoming ]. M. Thresh & R. J. Cooter. Strategies for controlling the Tm-2? resistance gene in tomato (Lycopersicon cassava mosaic virus disease in Africa esculentum) D. Janssen, E. Saez, E. Segundo, G. Martin, F. Gil © Original Articles I. M. Cuadrado. Capsicum annuum — a new host of C. Kubo, E. Nakazono-Nagaoka, K. Hagiwara, Parietaria mottle virus in Spain H. Kajibara, §. Takeuchi, K. Matsuo, T. U. Ichiki & R. A. Mumford, B. Jarvis, V. Harju, ]. Elmore © T. Omura. New severe strains of Melon necrotic spot A. Skelton. The first identification of two viruses virus: Sy mptomatology and sequencing infecting trailing verbena in the UK A. K. Singh, V. Hallan, R. Ram & A. A. Zaidi. A. A. Khan, Q. A. Naqvi, M. S. Khan, R. Singh @ Variability in the coat protein of Lily symptomless S. K. Raj. First report of a begomovirus infecting virus isolates infecting various lily species Calendula in India K. Wang & C. Hiruki. Distinctions between R. V. Chowda Reddy, V. Muniyappa, ]. Colvin & phytoplasmas at the subgroup level detected by S. Seal. A new begomovirus isolated from Gossypium heteroduplex mobility assay barbadense in southern India Y. Arocha, M. Lopez, M. Fernandez, B. Pinol, P. Ramachandran, ]. Agarwal, A. Roy, D. K. Ghosh, D. Horta, E. L. Peralta, R. Almeida, O. Carvajal, D. R. Das & Y. S. Ablawat. First record of a Hop §. Picornell, M. R. Wilson & P. Jones. Transmission of stunt viroid variant on Nagpur mandarin and a sugarcane yellow leaf phytoplasma by the delphacid Mosambi sweet orange trees on rough lemon and planthopper Saccharosydne saccharivora, a new vector Rangpur lime rootstocks of sugarcane yellow leaf syndrome A. Mebra, V. Hallan, B. Lal, H. R. Negi & R. Hadas, G. Kritzman, F. Klietman, T. Gefen A. A. Zaidi. Sorbaria tomentosa — a new natural host c» §. Manulis. Comparison of extraction procedures for Potato virus Y (PVY) and determination of the detection threshold for K. Mandal & S. Maiti. Bacterial soft rot of aloe caused Clavibacter michiganensis ssp. michiganensis in tomato by Pectobacterium chrysanthemi: a new report from seeds India H. Buschmann, G. Gonsior & ]. Sauerborn. M. L. Jeeva, V. Hegde, T. Makeshkumar, R. R. Nair Pathogenicity of branched broomrape (Orobanche c §. Edison. Dioscorea alata, a new host of ramosa) populations on tobacco cultivars Sclerotium rolfsii in India N. Vovlas, D. Mifsud, B. B. Landa & P. Castillo. X. O. Zhu, X. Y. Chen, Y. Luo & L. Y. Guo. First Pathogenicity of the root-knot nematode Meloidogyne report of Monilinia fructicola on peach and nectarine javanica on potato in China C. Kora, M. R. McDonald & G. ]. Boland. K. Vrandecic, ]. Cosic, L. Riccioni, T. Duvnjak & Occurrence of fungal pathogens of carrots on wooden D. Jurkovic. \solation of Diaporthe phaseolorum var. boxes used for storage caulivora from Abutilon theophrasti in Croatia S. Chen, X. Dai, S. Qiang & Y. Tang. Effect of a H. H. Altimok. First report of fusarium wilt of eggplant nonhost-selective toxin from Alternaria alternata on caused by Fusarium oxysporum f. sp. melongenae chloroplast-electron transfer activity in Eupatorium in Turkey adenophorum Volume contents Y. C. Liang, W. C. Sun, J. Si &@ V. Rémbeld. Effects of J. Diaz, C. Silvar, M. M. Varela, A. Bernal & foliar- and root-applied silicon on the enhancement of F. Merino. Fusarium confers protection against several induced resistance to powdery mildew in Cucumis mycelial pathogens of pepper plants sativus G. Dunger, A. L. Arabolaza, N. Gottig, J. Freeman, E. Ward, R. J]. Gutteridge © E. G. Orellano & J. Ottado. Participation of G. L. Bateman. Methods for studying population Xanthomonas axonopodis pv. citri hrp cluster in citrus structure, including sensitivity to the fungicide canker and nonhost plant responses silthiofam, of the cereal take-all fungus, S. Giorgi & M. Scortichini. Molecular characterization Gaeumannomyces graminis vat. tritici of Erwinia amylovora strains from different host C. Lannou, P. Hubert & C. Gimeno. Competition and plants through RFLP analysis and sequencing of hbrpN interactions among stripe rust pathotypes in wheat- and dspA/E genes cultivar mixtures S. A. Weller, D. E. Stead & J. P. W. Young. Induction Book review of root-mat symptoms on cucumber plants by Rhizobium, but not by Ochrobactrum or Sinorhizobium, harbouring a cucumopine NUMBER 6 DECEMBER Ri plasmid British Society for Plant Pathology Presidential New Disease Reports Address 2004 N. L. Mantri, A. S. Kitkaru, M. B. Misal & K. S. Ravi. S. J. Wale. The science of appliance First report of Papaya ringspot virus — W in bottle gourd (Lagenaria siceraria) from India Original Articles M. Tahir & M. S. Haider. First report of Tomato F. Pilet, R. Pellé, D. Ellisseche & D. Andrivon. leaf curl New Delhi virus infecting bitter gourd in Efficacy of the R2 resistance gene as a component for Pakistan the durable management of potato late blight in I. Safrankova. First report of Volutella France pachysandricola on Pachysandra terminalis in the K. Gotoh, S. Akino, A. Maeda, N. Kondo, S. Naito, Czech Republic M. Kato & A. Ogoshi. Characterization of some Asian S. K. Raj, M. S. Khan & R. Singh. Natural occurrence isolates of Phytophthora infestans of a begomovirus on pigeonpea in India G. Garry, G. A. Forbes, A. Salas, M. Santa Cruz, Sh. Farzadfar, R. Pourrahim, A. R. Golnaraghi © W. G. Perez & R. J. Nelson. Genetic diversity and A. Ahoonmanesh. Occurrence of Cauliflower mosaic host differentiation among isolates of Phytophthora virus in different cruciferous plants in Iran infestans from cultivated potato and wild solanaceous O. O. Li, ]. X. Feng, J. L. Tang, W. Lin, C. J. Duan, hosts in Peru Y. F. Ye & K. Luo. Siraita grosvenorti (Luo Han Guo; S. Pazoutova & D. E. Frederickson. Genetic diversity Cucurbitaceae) is a new host of Ralstonia of Claviceps africana on sorghum and Hyparrhenia solanacearum in China M. Rahman, D. Hussain, T. A. Malik & Y. Zafar Auth or index Genetics of resistance to cotton leaf curl disease in Gossypium hirsutum Keyword index