18S rDNA AND beta-TUBULIN DIVERSITY IN RHIZOCTONIA ZEAE VOORHEES
Journal
Pakistan Journal of Botany
Journal Volume
48
Journal Issue
2
Pages
645-651
Date Issued
2016-04
Date
2016-04
Author(s)
Gurkanli, Cem Tolga
Aydin, Emine Banu
Demirci, Erkol
Erper, Ismail
Karaca, Gursel
Poltronieri, Luiz Sebastiao
Ozkoc, Ibrahim
Abstract
Waitea circinata Warcup & Talbot, which is related to the anamorphic form-genus Rhizoctonia D.C., is a world wide distributed soil-borne fungal pathogen. Several molecular based studies have been published based on rDNA-ITS sequences to determine the phylogenetic relations between and within the different Rhizoctonia groups. It is generally accepted that phylogenies depending on a single gene may be misleading. In this study, we phylogenetically analysed three varieties of Waitea circinata (var. circinata, var. zeae and var. oryzae) using the nucleotide sequences of two commonly used markers 18S rDNA and beta-tubulin for identification. Our phylogenetic analysis clearly supported the distinction of the three varieties. In W. circinata var. zeae, we determined a total of three lineages, two of which are distributed worldwide and one is unique for Americas. We observed both of the global lineages in Turkey and due to their dispersion, the invasion of these two lineages to Turkey probably occurred in different periods of times. Additionally, our results in this study once again suggested the Americas as the origin for W. circinata var. zeae.
Subjects
Rhizoctonia zeae
18S rDNA
Beta-Tubulin
Publisher
Pakistan Botanical Society
Type
journal article
