Akademik Veri Yönetim Sistemi
Bitki Koruma Bülteni, cilt.63, sa.2, ss.5-15, 2023 (Scopus)
This study aims to determine the species and evaluate the genetic diversity of
the pathogenic and nonpathogenic Rhizoctonia spp. and anastomosis groups
(AG) from wheat plants and rhizosphere soils in Turkey. Rhizoctonia species
were isolated from plants and rhizosphere soils in wheat fields in 5 provinces in
the Central Anatolian Region of Türkiye. As a result of the isolations, a total of
88 multinucleate (MN) and binucleate (BN) Rhizoctonia isolates were obtained.
Identifications of the isolates were determined by rDNA-ITS sequence analyses.
The identified isolates belonged to MN Waitea circinata var. zeae, W. circinata
var. oryzae, W. circinata var. circinata, MN Rhizoctonia solani AG 2-1, AG 2-2, AG
3, AG 4-HGII, AG 4-HGIII, AG 5, AG 8, AG 11 and BN AG A, AG DI, AG E, AG G,
AG H, AG I, AG I-like and AG K. The most isolated group was W. circinata var.
circinata. In the pathogenicity studies, the most virulent group was determined
as R. solani AG 4. Among the binucleate isolates, groups other than R. cerealis
AG DI were not found to be pathogenic. Neighbor-joining phylogenetic trees of
isolates were constructed from rDNA-ITS sequences. As a result of this study, the
regional distribution of MN and BN Rhizoctonia AG isolates in important wheat
production areas in the Central Anatolia Region, Türkiye was determined. In
addition, this study is the first comprehensive study in which the genetic diversity
of Rhizoctonia AGs isolates obtained from wheat and rhizosphere soils in the
region was evaluated with a molecular approach