A new mycoparasite, Pythium lycopersicum, isolated in Isparta, Turkey: Morphology, molecular characteristics, and its antagonism with phytopathogenic fungi

KARACA G., Tepedelen G., Belghouthi A., Paul B.

FEMS Microbiology Letters, cilt.288, sa.2, ss.163-170, 2008 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 288 Sayı: 2
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1111/j.1574-6968.2008.01334.x
  • Dergi Adı: FEMS Microbiology Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.163-170
  • Anahtar Kelimeler: Antagonism, Antheridia, ITS region, Morphology, Oogonia, Pythium lycopersicum
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Hayır

Özet

Pythium lycopersicum sp. nov. has been isolated from soil samples taken in an agricultural land in the Isparta region of Southern Turkey. This oomycete is characterized by its contiguous sporangia having globose to elongated elements linked with hyphal filaments, ornamented oogonia, and monoclinous antheridia with large antheridial cells. The oomycete is reminiscent of Pythium ornamentatum described by the corresponding author in 1987 from soil samples taken in Algeria. Sequence analyses of the internal transcribed spacer (ITS) regions of rRNA show a close relationship with Pythium oligandrum and other mycoparasites possessing ornamented oogonia. Morphological and molecular features of this isolate justify its description as a new species: P. lycopersicum. When grown together with Botrytis cinerea, this oomycete shows a pronounced antagonism and suppresses the phytopathogen. The morphological details, together with the analysis of the ITS region of its rRNA, and its antagonism with some phytopathogens are discussed in this article. © 2008 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.