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Characterization of RKN-regulated WRKY-like Genes from Tomato Bhattarai, K.K. & I. Kaloshian Department of Nematology, University of California, Riverside, CA 92521, USA. In tomato, Mi-1 is a resistant gene originally identified to confer resistance to root-knot nematode (RKN; Meloidogyne spp.). Later, it was shown that Mi-1 also confers resistance to potato aphids (Macrosiphum euphorbiae), whiteflies (Bemisia tabaci) and tomato psyllids (Bactericerca cockerelli). We used TOM1 cDNA microarrays to identify the transcriptome changes during RKN/tomato compatible (susceptible, Moneymaker; mi) and incompatible (resistant, Motelle; Mi-1) interactions 24 h post inoculation. Ten percent of the up-regulated genes (P
Manganese Superoxide Dismutase in Meloidogyne incognita Isolates Selected for Virulence on Tomato Molinari, S. (1), L. Rosso (1) & C. Ornat Longaron (2) (1) Institute of Plant Protection, National Council of Research (C.N.R.), Via G. Amendola 122/D – 70126 Bari, Italy; (2) Departament d'Enginyeria Agroalimentària i Biotecnologia, Universitat Politecnica de Catalunya, 08860 Castelldefels – Barcelona, Spain Root knot nematodes (Meloidogyne spp.) are important pests of a wide range of crops, including tomato. Resistance of tomato to root-knot nematodes is conferred by the single dominant gene Mi-1, which is present in all commercially available resistant tomato cultivars, at present. However, several resistance-breaking populations are being collected world-wide. Two isolates coming from the same standard population of Meloidogyne incognita, one selected for virulence against Mi-1 and the other left avirulent, have been used in this study. Manganese superoxide dismutase activity (Mn-SOD) was higher in virulent infective juveniles compared with avirulent counterparts. m-RNA was extracted from those two isolates and converted into cDNA. Species-specific primers of Mn-SOD were used for PCR and one single PCR product was generated from each isolate (EMBL accessions nos. AM285679 and AM285680). Such products were sequenced and the deduced amino-acid sequence recognized as a mitochondrial dimeric manganese SOD. The amount of transcripts was quantified by realtime-PCR. The virulent isolate showed an amount of transcripts 4-fold higher than that present in the avirulent isolate. The up-regulation of manganese SOD gene, which was associated with a high activity of the enzyme, has been found to be a characteristic of pre-parasitic juveniles of M. incognita isolates selected for virulence on tomato. Expression Analysis of Plant Defensin Genes in Nematode Induced Feeding Sites Siddique, S., D. Szakasits, K. Wieczorek, F.M.W. Grundler & H. Bohlmann Institute of Plant Protection, Department of Applied Plant Sciences and Plant Biotechnology, University of Natural Resources and Applied Life Sciences, Vienna, Austria. Arabidopsis thaliana is a host for the sugar beet cyst nematode Heterodera schachtii. Juvenile nematodes invade the roots and induce the development of a syncytium which functions as a feeding site for the nematode. Transcriptome analysis of syncytia induced in the roots of Arabidopsis by Heterodera schachtii was performed with Affymetrix GeneChips using microaspiration to isolate pure syncytium material. Initial data analysis has shown that defense gene expression is repressed similar to the results obtained for galls induced by the root knot nematode Meloidogyne incognita in Arabidopsis roots (Jammes et al., 2005). However, an exception is the expression of a group of plant defensin genes. Pdf2.2 and Pdf2.3 were strongly expressed both in control root sections and in syncytia, and Pdf2.1 was among the most strongly upregulated genes in syncytia. The expression pattern of these genes in Arabidopsis plants and their response to infection by H. schachtii, H. glycines and M. incognita has been studied using GUS-lines, in situ RT-PCR and RT-PCR. 5 th International Congress of Nematology, 2008 248
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TABLE OF CONTENTS SESSION ONE - PLE
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SESSION SEVEN - CURRENT AND FUTURE
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SESSION THIRTEEN - SURVIVAL, ADAPTA
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Quality Requirements for Accreditat
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Specific Diagnostic and Genetic Var
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Records of Bursaphelenchus species
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SESSION FORTY-ONE - BIOLOGICAL CONT
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Changes in Soil Nematode Assemblage
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Studies on Amino Acid Profile and i
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An Entomoparasitic Adult Form of Bu
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Manganese Superoxide Dismutase in M
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Lumactud, R.C. & M. Tenuta Communit
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Pochonia chlamydosporia Reduces the
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TOPIC NINETEEN - DETECTION AND SAMP
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SESSION ONE - PLENARY SESSION CHAIR
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SESSION TWO - ECOLOGY AND BIODIVERS
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Nematode Diversity under Commercial
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A Perspective on Diversity within N
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Host Specificity, Speciation, and C
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Phylogenetic Analysis of Parasitism
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SESSION FOUR - RESISTANCE BREEDING
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Breeding for Resistance to Root-kno
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SESSION FIVE - CURRENT TRENDS IN NE
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Phylogeny and Evolution of Rhabditi
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SESSION SIX - NEMATODES IN FARMING
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schedule of these crops. More frequ
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SESSION SEVEN - CURRENT AND FUTURE
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Use of EPNs in South America: Prese
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SESSION EIGHT - RESISTANCE BREEDING
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Identification of Multiple Resistan
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Evaluation of Banana Germplasm as P
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deferens of small nematodes is a lo
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SESSION TEN - SUSTAINABLE AND ORGAN
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In further glasshouse experiments,
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SESSION ELEVEN - PARASATIC NEMATODE
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Gene Finding, Expression Profiling,
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SESSION TWELVE - ROOT-KNOT NEMATODE
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Weeds Acting as Reservoir Hosts of
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Gene Induction by Desiccation Stres
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An Antarctic Nematode that Survives
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Identification and Characterization
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SESSION FIFTEEN - FOREST NEMATOLOGY
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Observations on the Occurrence and
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Asymptomatic Carrier Trees in Pine
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The Meloidogyne incognita Genome Sh
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molecular information available on
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Modelling Nematode Populations in H
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Population Distribution of Plant-Pa
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Nematological Research and Training
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SESSION NINETEEN - BIOSECURITY, QUA
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Incursion Management of Potato Cyst
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Networking and Resources for Manage
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Root-knot Nematodes Manipulate Plan
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SESSION TWENTY-ONE - NEMATODE MANAG
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Impact of Nutrient Supply Systems i
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Incidence and Economic Losses cause
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Support for Nematology in Developin
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PLENARY SESSION TWENTY-THREE - THE
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SESSION TWENTY-FOUR - CLIMATE CHANG
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A Subtracted cDNA Library of Putati
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Molecular Nematology as a Tool for
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Uncovering the Parasitic Interactio
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SESSION TWENTY-SIX - MOLECULAR APPL
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SESSION TWENTY-SEVEN - NEMATODE MAN
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Host-plant Resistance in Crops Cult
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SESSION TWENTY-EIGHT - PANEL DISCUS
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Soil Nematode Communities under Cli
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Modeling Soil Properties and Organi
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Plant Parasitic Nematode: Restricte
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Parasitism Genes of Root-Knot and C
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SESSION THIRTY-ONE - MOLECULAR AND
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Missing the Unseen: Morphological a
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SESSION THIRTY-TWO - NEMATODE MANAG
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Sugar Cane Production and Nematode
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SESSION THIRTY-THREE - NEMATOLOGY I
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Records of Bursaphelenchus species
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comprise about 15-20% of the popula
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Selection of Virulent Populations o
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Virulence of Globodera pallida in R
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From Suppressive Soils to Suppressi
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Soil Biodisinfection as an Alternat
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Site-specific Technology: An Introd
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probability of yield loss due to RK
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Plant-parasitic Nematodes Associate
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Gorgan 3, Williams, JK (Sari), BP (
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Habitat Quality as a Determinant of
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Do Natural Enemies Regulate Entomop
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Novel Approaches to Analyze Gene Ex
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Connecting Genetics and Genomics in
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Bacteria as Natural Enemies of Plan
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Ecology of Pochonia chlamydosporia
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Root-Knot Nematodes of Economic Imp
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Meloidogyne mayaguensis and M. ethi
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Environmental Factors Affecting Nem
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Seasonal Fluctuations in Size Spect
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Transgene Driven RNAi for Cell Spec
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SESSION FORTY-FIVE - INDUSTRIAL PRO
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Stability Issues: Maintenance of Be
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Cereal Cyst Nematodes: A Threat and
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Preliminary trials indicate that th
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individual nematodes. The MOTUs dis
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Changes in Soil Nematode Assemblage
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(3,338) had a lower expression leve
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SESSION FORTY-NINE - COMMERCIAL PRO
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Putting Waste to Work: Commercially
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test indicate some isolates reduce
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PLENARY SESSION FIFTY-ONE - FUTURE
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POSTER PRESENTATIONS TOPIC ONE - EV
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Goldfinger and a few other cultivar
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Mitochondrial DNA Frameshift Mutati
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The larger and smaller cells divide
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TOPIC THREE - NEMATODE PHYSIOLOGICA
Page 226 and 227: Studies on Amino Acid Profile and i
Page 228 and 229: CFPM101, barley cv. Myriam, buckwhe
Page 230 and 231: ainfalls that represent several tim
Page 232 and 233: Anatomical and Histological Alterat
Page 234 and 235: associated with peels for five minu
Page 236 and 237: Community Structure of Plant-Parasi
Page 238 and 239: technique and samples examined unde
Page 240 and 241: e retained for seed production on t
Page 242 and 243: TOPIC FIVE - PLANT-PARASITIC NEMATO
Page 244 and 245: Infection of Brachiaria brizantha S
Page 246 and 247: certain exporting countries but als
Page 248 and 249: Morphometric, Molecular and Biologi
Page 250 and 251: Cold Tolerance Mechanisms of Entomo
Page 252 and 253: Identification of Heteroprhabditis
Page 254 and 255: suggest that C. japonica DJs appear
Page 256 and 257: TOPIC SEVEN - ANIMAL-PARASITIC NEMA
Page 258 and 259: Intestinal Parasitic Nematodes of V
Page 260 and 261: TOPIC EIGHT - MARINE AND FRESHWATER
Page 262 and 263: Preliminary Observations on Nematod
Page 264 and 265: Heman, and the resistant tomato sta
Page 266 and 267: oot-knot nematode numbers in plants
Page 268 and 269: maize varieties could have in contr
Page 270 and 271: Red Alert on the Plant-parasitic Ne
Page 272 and 273: TOPIC TEN - HOST PLANT RESISTANCE A
Page 274 and 275: Mapping Nematode Resistance in Rice
Page 278 and 279: Functional Characterisation of Tran
Page 280 and 281: This nematode has been probably ent
Page 282 and 283: TOPIC THIRTEEN - INTERACTIONS OF NE
Page 284 and 285: Interaction between Meloidogyne inc
Page 286 and 287: AMF-induced Bioprotection against M
Page 288 and 289: plants were previously infected wit
Page 290 and 291: TOPIC FOURTEEN - EPIDEMIOLOGY AND P
Page 292 and 293: Population Densities of Tylenchulus
Page 294 and 295: Does Long-term Organic Fertilizatio
Page 296 and 297: Two ~ 400 bp fragments of rRNA loci
Page 298 and 299: the vitality on 4-8 days. Nematodes
Page 300 and 301: of cultured nematodes at different
Page 302 and 303: feeders. Pratylenchus dominanted in
Page 304 and 305: TOPIC SIXTEEN - ORGANIC AMENDMENTS
Page 306 and 307: The Nematicidal Properties of Cyste
Page 308 and 309: Effects of Salicylic Acid and Amino
Page 310 and 311: on their nematicidal effect on P. p
Page 312 and 313: DROP-technology is based on tempera
Page 314 and 315: indicated that M. javanica J 2 popu
Page 316 and 317: Effect of Neem Based Biopesticides
Page 318 and 319: • Onion plant stand negatively co
Page 320 and 321: Interaction between Two Meloidogyne
Page 322 and 323: Antagonistic Activity of an Isolate
Page 324 and 325: significantly from the fosthiazate
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Anastomosis in Selected Isolates of
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Impact of Pseudomonas-based Biocont
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Effect of the Emergence and Infecti
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Potential of Dual Purpose Intercrop
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Parasites, Vibrations and the Hunt
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TOPIC EIGHTEEN - CHEMICAL AND INTEG
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Evaluation of Pre-plant Treatments
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compared to the untreated control.
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Agri-Terra: A New Low-rate Nematici
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Secondary Metabolites Present in Ca
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system does not permit use of nemat
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Development of a Management Strateg
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Healthcare Assessment Methodology i
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Phytoparasitic Nematode Infestation
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Quantitative Detection of the Major
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TOPIC TWENTY - DIAGNOSTICS OF PARAS
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A Real-time PCR Assay for Detection
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Plant Parasitic Nematodes in Austra
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Diagnostics and Management to Prote
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Morphological and Molecular Charact
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Creating Awareness of Nematodes is
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Status of Plant-Parasitic Nematodes
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Bulgheresi, S. 96 Bulman, S. 332 Bu
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Ghalandar, M. 204 Gheysen, G. 62, 1
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Lo Russo, V. 116 Lockhart, P.J. 47
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Price, A.H. 245 Proença, D. 253 Pu
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Tian, Y. 132 Tiedt, L.R. 210 Tigano
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