Anastomosis grouping of Rhizoctonia solani and binucleate Rhizoctonia spp. isolated from pepper in Erzincan, Turkey

Abstract

Tuncer S., Eken C. (2013) [2007][2008]. The most prevalent multinucleate anastomosis groups (AG) were AG-4 (85.2%), followed by AG-2 type 1 (7.4%), AG-6 (5.0%), and AG-3 (2.5%). The population of binucleate Rhizoctonia spp. comprised AG-A (82.4%), AG-K (11.8%), and AG-G (5.9%). Rhizoctonia solani AG-3 and AG-6, as well as binucleate Rhizoctonia spp. AG-G and AG-K on pepper (c. annuum) were firstly determined in this study. During both in vitro and in vivo pathogenicity experiments differences in virulence level between R. solani and binucleate Rhizoctonia spp. isolates were observed. Isolates of R. solani AG-2 type 1 and AG-4 were the most virulent, binucleate Rhizoctonia spp. isolates of AG-A were less virulent, whereas binucleate Rhizoctonia spp. isolates of AG-G and AG-K were non-pathogenic.

Characterization and pathogenicity of Rhizoctonia SPP. isolated from vegetable crops grown in greenhouses in Samsun province, Turkey

“…In another study, isolates of R. solani AG-4 were recovered from infected winter squash plants grown in the Black Sea region (ERPER et al, 2015). However, in Turkey, isolates of AG-1, AG-2 type 1, AG-3, AG-4, AG-5, AG-6, AG-9, AG-10 and AG-11 of R. solani and AG-A, AG-E, AG-F, AG-G, AG-I and AG-K of BN Rhizoctonia were previously detected on bean and pepper plants in different regions of Turkey (DEMIRCI;DOKEN, 1995;DEMIRCI, 2004;TUNCER;EKEN, 2013). In addition, Misawa and Kuninaga (2010) identified foot rot caused by R. solani AG-2-1 and AG-3 on mature tomato plants in Hokkaido, Japan. Similarly, other researchers reported that Rhizoctonia group fungi were detected on 264 Characterization and pathogenicity… YILDIRIM,E.…”

“…As a result of the study, R. solani AG-4 was found as the most prevalent anastomosis group (97.9%). Additionally, Tuncer and Eken (2013) found that more than three quarters of the 81 R. solani isolates obtained from peppers grown in Erzincan province, Turkey belonged to AG-4. Alike, the most common occurrence of R. solani AG-4 isolates on cucumber, pepper and snap bean plants has also been reported from other countries by several workers (MIRMAJLESSI et al, 2012;HARATIANA et al, 2013).…”

“…Additionally, in Turkey, isolates of AG-1, AG-2 type 1, AG-3, AG-4 and AG-6 of R. solani, and the binucleate Rhizoctonia spp. (AG-A, AG-G and AG-K) had been determined on pepper (DEMIRCI; DOKEN, 1995;TUNCER;EKEN, 2013). Similarly, BN Rhizoctonia AG-A, AG-E and AG-F have been reported from bean, cucumber and tomato (SNEH et al, 1991).…”

“…Gina seedlings. For in vitro experiments, an agar plate assay was used the method of Tuncer and Eken (2013). Isolates were transferred to PDA and incubated at 25°C for 2-3 days.…”

“…R. solani is found on bean, cucumber, eggplant, pepper and tomato, which are important vegetable crops. In addition, R. solani can cause several types of damage, including dampingoff, root rot and web blight on bean (MUYOLO et al, 1993;KARACA et al, 2002;DEMIRCI, 2004;ERPER et al, 2011), damping-off and root rot on cucumber HARATIANA et al, 2013;JAISWAL et al, 2014), brown spot on eggplant (SNEH et al, 1991), damping-off, hypocotyl rot and root rot on pepper (KARACA et al, 2002, VELÁSQUEZ;VICTORIANO, 2007;LOPEZ et al, 2009;TUNCER;EKEN, 2013) and damping-off, foot and root rot on tomato MISAWA;KUNINAGA, 2010;SOLANKI et al, 2012).…”