pl*nÍ,"dlts*An Official Journal of The American Phytopathological

November 2009

FOCUS

Volume 93, Number 11

1083 The Latest in Plant Pathology and Nematology

FEATURE

1084 Powdery Mildew of Dogwoods: Current Status and Future Prospects. I ll,M. T. Mmbaga, A. S. Windham, M. T. Wíndham, and R. N. Trígiano

RESEARCH

1093 Race Dynamics, Diversity, and Virulence Evolution in Puccinia striifurmis f,sp. tritici, the Causal Agent of Wheat Stripe Rust in China from 2003 to 2007 .W Q. Chen, L. R. Wu, T. G. Liu, S. C. Xu, S. L. Jin, Y. L. Peng, and B. T. Wang

1102 Detection, Distribution, and Genetic Variability of 'Candidatus Liberibacter'Species Associated with Zebra Complex Disease of Potato in North America.A. Wen, I. Mallik, V. Y. Alvarado, J. S. Pasche, X. Wang, W. Li, L. Lety, H. Lín,H. B. Scholthof, T. E. Mirkov. C. M. Rush. and N. C. Gudmestad

1116 Field Resistance to Potato Stem Colonization by the Black Dot PathogenColletotrichum coccodes. N. Nitzan, M. A. Evans, T. F. Cummings, D. A. Johnson,D. L. Batchelor C. Olsen, K. G. Haynes, and C. R. Brown

'1123 Broad Diversity of Ralstonin solanacearum Strains in Cameroon. G. MahbouSomo Tbukam, G. Cellier E. Wicker, C. Guilbaud, R. Kahane. C. Allen. and P. Príor

'l'13'l Leaf Scorch of Purple-Leafed Plum and Sweetgum Dieback: TWo NewDiseases in Southern California Caused by Xylella fastidios¿ Strains withDifferent Host Ranges. R. Hemandez-Martinez, D. A. Cooksey, and F. P. Wong

1 139 Characterization of a Phytoplasma Associated with Frogskin Disease inCassava. E. Alvarez., J. F. Mejía, G. A. Llano, J. B. Loke, A. Calari, B. Duduk,and A. Bertaccini

1146 Susceptibility of Populus balsamifera to Septoria musiva: A Field Study andGreenhouse Experiment. J. M. LeBoldus, P. V. Blenis, B. R. Thomas, N. Feau,and L. Bemier

1151 Characterization and Pathogenicity of Fusicladium eriobotryae, the FungalPathogen Responsible for Loquat Scab. P Sánchez-Tbrres, R. Hinarejos,and J. J. Tuset

1158 Verticillium Wilt of Ailanthus altissima: Susceptibility of Associated TieeSpecies. Mark J. Schall and Donald D. Davis

1163 Aspergillus tlayzs Biomass in Maize Estimated by Quantitative Real-TimePolymerase Chain Reaction Is Strongly Correlated with AflatoxinConcentration, S. X. Mideros, G. L. Windham, W P. Williams, and R. J. Nelson

1171 Effect of Brown Rust on Yield of Sugarcane in Louisiana. J. W. Hoyand C. A. Hollier ¿'

1175 Evaluation of TWo Disease Warning Systems for Botryosphaeria Panicle andShoot Blight of California Pistachio and Efficient Control Based on Early-SeasonSprays. D. P Morgan, G. E Drieve4 D. Febs, W. H. Kruege4 andT. J. Michailides

1182 Stream Monitoring for Detection of Phytophthora ramoram in Oregon TanoakForests. W. Sutton, E. M. Hansen, P. W. Reeser and A. Kanaskíe

'1187 Neofusicoccum spp. Associated with Stem Canker and Dieback of Blueberryin Chile. J. C. Espinoza. E. X. Briceño. E. R. Chrivez. J. R. Úrbez-Torresand B. A. Latorre

1195 Relationship Between Cluster Compactness and Bunch Rot in VignolesGrapes. B. Hed, H. K. Ngugi, and J. W. Travis

WWKW

COVER

(Clockwise from upper leli): Red-brownpatches under powdery mildew colonies ondogwood caused by Erysiphe pulchra orPhyllactinia guttata (.courfesy Y. Li et al., seepage 1084); mycelium fan and sclerotia ofSclerotium rolfsii on diseased stem of impatiens(courtesy J. M. Soares et al., see page l2l4);visual symptoms of false smut of rice caused byUstilaginoidea vlrens (courtesy S. A. Brooks etal., see page 1202).

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Plant Disease / November 2009 1081

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october 2009 PuxrDlsEAsEissued 9 September 2009.

1082 P lan t D isease/Vo l .93 No. 11

1202 Effect of Cultural Management Practices on the Severity of False Smutand Kernel Smut of Rice. S. A. Brooks, M. M. Anders, and K. M. Yeater

1209 An Amino Acid Deletion inWheat streak mosaíc rirzs Capsid ProteinDistinguishes a Homogeneous Group of European Isolates and FacilitatesTheir Specific Detection. S. Gadíou, O. Kúdela, J. Ripl, F Rabenstein,J. K. Kundu. and M. Glasa

DISEASE NOTES

1214 Wildfire of Soybean Caused by Pseudomonas syringae pv. tabaci, aNewDisease in Korea. L-5. Myung, J.-W. Kim, S. H. An, J. H. Lee, S. K. Kim,Y.-K. I*e,andW. G. Kim

1214 First Report of Soybean yellow mottle mosaic virus in Soybean in NorthAmerica. S. Li, J. S. Moon, S. H. Lee, and L. L. Domier

1214 Sclerotium rolfsii Causing Stem Rot of Impatiens wallerinna in Brazil.J. M. Soares, F F do Crato, D. M. Macedo, and R. W. Barreto

1215 First Report of Shoot Blight, Canker, and Gummosis Caused byNeoscytalí.dium dimidintam on Citrus in ltaly. G. Polizzi, D. Aiello, A. Wtale,F. Giuffrida, J. Z. Groenewald, and P. W. Crous

1215 First Report of Alternarin panax Causing Leaf Spot of Aralia cordatain Japan. M. Zhang, T. Tsukiboshi, and I. Okabe

1216 First Report of a Natural Infection by Mexican PapitaViroi.d and TomatoChlorotic Dwarf Viroi.d on Greenhouse Tomatoes in Mexico. K.-5. LingandW Zhang

1216 First Report of Garlic Leaf Blight Caused by Botrytis porn in China. J. Zhang,G. Q. Li, and D. H. Jiang

1216 Phytophthora taxonniederhauserii, a New Root and Crown Rot Pathogen ofBanksia spp. in Italy. S. O. Caccíola, S. Scibetta, P. Martini, C. Riua, andA. Pane

'1217 First Report of Crown Rot Caused by Cylíndrocladium pauciramosumon Scarlet Honey Myrtle in ltaly. G. Polizzi, D. Aiello, I. Castello,G. Parlavecchio, A. Vitale, and F. Nigro

'12'17 First Report of the Nivalenol Chemotype of Fusarium graminearum CausingHead Blight of Wheat in the Grand Duchy of Luxembourg. M. Pasqualí,F. Giraud, C. Brochot, L. Hoffinann, andT. Bohn

'1218 Recent Outbreaks of Black Rot of Brassicas Caused by Xanthomonascampestris pv, campestris in Southern Mozambique. J. Bila, A. M. Mondjana,E. G. Wuffi and C. N. Mortensen

1218 FirstReport of Carrotredleaf virusandCdrrotmottlevirus, CausalAgentsofCarrot Motley Dwarf, in Carrot in Mauritius. A. Gungoosingh-Bunwaree, W.Menzel, S. Winter V Vally, R. Seewoogoolam, S. P. Beni Madhu, and H. J. Vetten

1218 First Report of Grapevine leafroll-associnted virus-3 in Six Wine GrapeCultivars in Idaho. T. A. Mekuria, A. V. Karasev, R. R. Martin, and R. A. Naidu

1219 First Report ofBacterial Head Rot ofBroccoli Caused by Pseudomonasfluorescens in China. B. Li, G. L. Wang, Z. Y. Wu, W Qiu, Q. M. Tang, and G. L. Xie

1219 Appearance of Powdery Mildew of Wheat Caused by Blumerin graminis f. sp.tritici on Pml7-Bearing Cultivars in North Carolina. C. Cowger R. Parks,and D. Marshall

1220 First Report of Bacterial Leaf Scorch Caused by Xylelln fastid.i.osa onSouthern Highbush Blueberry in Florida. P. F. Harmon and D. L. Hopkins

'1220 First Report of Plasmodiophora brassicae on Rapeseed in the Grand Duchy ofLuxembourg. N. Desoignies, M. Eickermann, P. Delfusse, F. Kreme4 N. Godart,L. Hoflinann, andA. Legréve

'1220 First Report of Faba bean necrotic yellows virus Affecting Legume Cropsin Azerbaijan. S. G. Kumarí, N. Attat; E. Mustafayev, and Z. Akparov

1221 Gray Mold Infection of Actinidia arguta inltaly. G. Romanaui

122'l First Report of Tobacco mosaic virus in Abutilon theophrasti in China.Y. B. Niu, L. Qing, M. Yao, D. F. Wang, J. D. Liu, and J. S. Wang

1221 First Report of Bursaphelenchus doui on Ttrlip Tree (Líriodendron tulípifera)in Korea. H. Han,Y.-J. Chung, and S.-C. Shin

'1222 First Report of Leveillula tauri.ca Causing Powdery Mildew on Pepperin Maryland. R. W. Jones, J. R. Stommel, and L. A. Wanner