10th INTERNATIONAL VERTICILLIUM SYMPOSIUM 16-20 ...

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VERTICILLIUM LONGISPORUM INDUCES NEW XYLEMVESSEL FORMATION IN LEAVES DURING AN INFECTION OFARABIDOPSIS THALIANA AND BRASSICA NAPUSM. REUSCHE, V. LIPKA AND T. TEICHMANNAlbrecht-von-Haller-Institut für Pflanzenwissenschaften, Abteilung Zellbiologie der Pflanze, Georg-August- Universität Göttingen, Untere Karspüle 2, 37073 Göttingen, Germany, mreusch@gwdg.de;Volker.Lipka@biologie.uni-goettingen.de, tteichm@gwdg.deVerticillium longisporum is a soil-borne fungal pathogen which causes vasculardisease in oilseed rape and other members of the family Brassicaceae. The fungusenters via the plant root system, invades the xylem vessels and then systemicallycolonizes the hypocotyl and shoot xylem elements. We use GFP and RFP-labeledVerticillium strains to study the infection process in Arabidopsis thaliana. As thefungus proliferates into the leaf vascular bundles, transdifferentiation of mesophyllcells to xylem elements was observed in A. thaliana and Brassica napus. Wecurrently study the role of transcription factors involved in the Verticillium inducedtransdifferentiation.44
THE SUCROSE NON FERMENTING PROTEIN KINASE(SNF1) GENE OF VERTICILLIUM DAHLIAE IS INVOLVED INVIRULENCE AND EXPRESSION OF GENES INVOLVED INPLANT CELL WALL DEGRADATIONA. TZIMA 1 , E. J. PAPLOMATAS 1 , P. RAUYAREE 2* AND S. KANG 21Department of Plant Pathology, Agricultural University of Athens, 75 Iera Odos, 11855 Athens,Greece2Department of Plant Pathology, The Pennsylvania State University, University Park, PA 16802, USA* Present address: Biotechnology Research and Development Office, Department of Agriculture,Rangsit-Nakhonnayok Road, Thunyaburi district, Pathumthani, 12110 ThailandThe sucrose non fermenting gene (SNF1) regulates the induction of cataboliterepressedgenes, including cell wall degrading enzymes. To assess its role inpathogenicity of V. dahliae, VdSNF1, the SNF1 ortholog, was disrupted in three V.dahliae races; race 1 of tomato and the defoliating and non-defoliating strains ofcotton. VdSNF1 mutants of the defoliating and the non-defoliating strains did notcause any visible symptoms on cotton plants while mutants of race 1 weresignificantly less virulent on tomato and eggplants. Representative mutants of tomatorace 1 were further characterized for the expression of cell wall degrading enzymes(CWDEs) and growth on different carbon sources. Specific CWDEs were notactivated in the resulting mutants after induction. Growth of the mutants wassignificantly reduced on pectin and galactose, while on glucose, sucrose and xylosethey grew similarly to wild type and ectopic strains. Tomato stem cross sections at thecotyledon level showed reduced xylem vessel colonization by an EGFP transformedrace 1 mutant strain compared with the wild type strain that heavily colonizedvascular bundles and adjacent parenchyma cells. Quantification of fungal biomass inplant tissues by Real-Time PCR, further confirmed reduced colonization ability ofroots, stems and cotyledons by the VdSNF1 mutant. The results of the present studysuggest a role of VdSNF1 in virulence, vascular colonization and production ofhydrolytic enzymes of the soilborne fungus V. dahliae.45
Page 1 and 2: 10th INTERNATIONAL VERTICILLIUMSYMP
Page 3 and 4: 10th INTERNATIONAL VERTICILLIUM SYM
Page 6: ORAL PRESENTATIONSTAXONOMY AND GENE
Page 10 and 11: 12.00 MANOLIS MARKAKISQuantificatio
Page 12 and 13: 16.40 MALTE BEINHOFFDetection and f
Page 14 and 15: Production and scavenging of ROS du
Page 16 and 17: C.Lucena 1 , J.A.J.Berni 2 , M.Mont
Page 18 and 19: 15.10 MARIA DOLORES GARCÍA-PEDRAJA
Page 20 and 21: 1 Agricultural Research Organizatio
Page 22 and 23: 17.15 CLOSING REMARKS17.30ELECTION
Page 24: VERTICILLIUM COMPARATIVE GENOMICSST
Page 27 and 28: ANALYSES OF MATING TYPE GENES IN VE
Page 29 and 30: DEVELOPMENT AND APPLICATION OF NEW
Page 31 and 32: QUANTITATIVE DETECTION OF MULTIPLE
Page 33 and 34: ANALYSIS OF VERTICILLIUM LONGISPORU
Page 35 and 36: CHORISMATE SYNTHASE AND COLONIZATIO
Page 37 and 38: CHANGES IN ETHYLENE PERCEPTION OF A
Page 39 and 40: IDENTIFICATION OF THE V. DAHLIAE SE
Page 41 and 42: MOLECULAR AND GENETIC DETERMINANTS
Page 43: CHARACTERIZATION AND GENETICS OF DI
Page 47 and 48: QTL MAPPING OF VERTICILLIUM RESISTA
Page 49 and 50: QUANTIFICATION OF DEFOLIATING AND N
Page 51 and 52: CATALYTIC SUBUNIT OF PROTEIN KINASE
Page 53 and 54: IDENTIFICATION AND CHARACTERIZATION
Page 55 and 56: AUTOPHAGY AND RESTING STRUCTURE DEV
Page 57 and 58: WILTING DISEASE IN THE HALLERTAUER
Page 59 and 60: CHARACTERISATION OF POTENTIAL PATHO
Page 61 and 62: CHARACTERIZATION OF NEP-LIKE PROTEI
Page 63 and 64: INSIGHTS INTO THE ROLE OF THE NECRO
Page 65 and 66: VERTICILLIUM LONGISPORUM-INDUCED GE
Page 67 and 68: IN VITRO ELICITATION OF PATHOGENICI
Page 69 and 70: ON VERTICILLIUM DAHLIAE PLASTICITY
Page 71 and 72: PHYSIOLOGICAL DIFFERENCES EXPRESSED
Page 73 and 74: PRODUCTION AND SCAVENGING OF ROS DU
Page 75 and 76: VERTICILLIUM WILT OF OLIVES IN SOUT
Page 77 and 78: BIOLOGICAL CONTROL OF VERTICILLIUM
Page 79 and 80: THE INFLUENCE OF AGRONOMIC FACTORS
Page 81 and 82: HIGH RESOLUTION THERMAL REMOTE SENS
Page 83 and 84: STENOTROPHOMONAS - NEW INSIGHTS INT
Page 85 and 86: CONTROL OF VERTICILLIUM WILT OF OLI
Page 87 and 88: MICROBIAL ANTAGONISTS AND COMPOST-B
Page 89 and 90: ATTEMPTS TO CONTROL VERTICILLIUM WI
Page 91 and 92: VERTICILLIUM RESISTANCE IN MAPLEJEL
Page 93 and 94: INITIAL SURVEY OF VERTICILLIUM WILT
Page 95 and 96:
DETECTION AND QUANTIFICATION OF VER
Page 97 and 98:
VERTICILLIUM INTERSPECIFIC HYBRIDS
Page 99 and 100:
AN OVERVIEW OF VEGETATIVE COMPATIBI
Page 101 and 102:
DETERMINATION OF PATHOTYPES OF VERT
Page 103 and 104:
POTENTIAL OF LIGNIN INCORPORATION I
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A KNOWLEDGE-BASED SYSTEM TO PREDICT
Page 107 and 108:
EFFECTS OF ACIBENZOLAR-S-METHYL ON
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MOLECULAR ANALYSIS OF ENDOPHYTIC CO
Page 111 and 112:
AN OUTBREAK OF VERTICILLIUM WILT IN
Page 113 and 114:
EFFECT OF GUANITO ON OLIVE PLANTLET
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Grisebachstr. 8D-37077 GOETTINGEN,
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DR. EVA HÄFFNERFreie Universität
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The Pennsylvania State UniversityUN
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Department of Plant Pathology75 Ier
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FAX: +31-317-483412E-mail: Partha.s
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DR. DIMITRIOS TSITSIYIANNISAgricult
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AUTHORS’ INDEXAADAM..............
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KKAMBLE ...........................
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TRAPERO-CASAS .....................
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10th INTERNATIONAL VERTICILLIUM SYMPOSIUM 16-20 ...

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