Fungal growth and <i><i>in planta</i></i> distribution of host-specific AAL-toxin in tomato plants infected with the tomato pathotype of <i><i>Alternaria alternata</i></i>

DOI JASI 44 References
  • KHEDER Ahmed A.
    The United Graduate School of Agricultural Sciences, Tottori University
  • AKAGI Yasunori
    Faculty of Agriculture, Tottori University
  • TAKAO Kazumi
    Faculty of Agriculture, Tottori University
  • AKAMATSU Hajime
    Faculty of Agriculture, Tottori University Current address: Biological Resources Division, Japan International Research Center for Agricultural Sciences (JIRCAS)
  • KODAMA Motoichiro
    Faculty of Agriculture, Tottori University Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University

Bibliographic Information

Other Title
  • トマトアルターナリア茎枯病菌が感染したトマト植物組織内における病原菌および宿主特異的AAL毒素の分布
  • Fungal growth and in planta distribution of host-specific AAL-toxin in tomato plants infected with the tomato pathotype of Alternaria alternata

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Abstract

  The tomato pathotype of Alternaria alternata causes Alternaria stem canker of tomato (<i>Solanum lycopersicum</i> L.) by producing a host-specific AAL-toxin. The chemical structure and biological activities of AAL-toxin are analogous to those of the mycotoxin fumonisin. Determination of pathogen development and toxin production in infected tomato plants is of prime importance for pathological evaluation and risk assessment of AAL-toxin. On a resistant cultivar, AAL-toxin and the pathogen were restricted to a small region surrounding only the initial inoculation site. On the other hand, widespread distribution of the toxin and the pathogen were detected in a susceptible cultivar. The pathological significance and contamination risk from the toxin were supported by the results of in planta production of the toxin in diseased tomato plants.

Journal

  • JSM Mycotoxins

    JSM Mycotoxins 62 (1), 7-13, 2012

    Japanese Society of Mycotoxicology

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