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- W3164768085 abstract "HomePlant DiseaseVol. 105, No. 11First Report of Rhizoctonia solani AG2-1 on Roots of Wheat in Kazakhstan PreviousNext DISEASE NOTE OPENOpen Access licenseFirst Report of Rhizoctonia solani AG2-1 on Roots of Wheat in KazakhstanGöksel Özer, Mustafa İmren, Tuğba Bozoğlu, and Abdelfattah A. DababatGöksel Özer†Corresponding authors: G. Özer; E-mail Address: gokozer@gmail.com, and A. A. Dababat; E-mail Address: a.dababat@cgiar.orghttps://orcid.org/0000-0002-3385-2520Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, TurkeySearch for more papers by this author, Mustafa İmrenhttps://orcid.org/0000-0002-7217-9092Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, TurkeySearch for more papers by this author, Tuğba BozoğluDepartment of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, TurkeySearch for more papers by this author, and Abdelfattah A. Dababat†Corresponding authors: G. Özer; E-mail Address: gokozer@gmail.com, and A. A. Dababat; E-mail Address: a.dababat@cgiar.orghttps://orcid.org/0000-0002-3172-0452International Maize and Wheat Improvement Centre (CIMMYT), P.O. Box. 39, Emek, Ankara, TurkeySearch for more papers by this author AffiliationsAuthors and Affiliations Göksel Özer1 † Mustafa İmren1 Tuğba Bozoğlu1 Abdelfattah A. Dababat2 † 1Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, Turkey 2International Maize and Wheat Improvement Centre (CIMMYT), P.O. Box. 39, Emek, Ankara, Turkey Published Online:15 Nov 2021https://doi.org/10.1094/PDIS-04-21-0786-PDNAboutSectionsPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmailWechat In June 2019, approximately 20 tillers of wheat (Triticum aestivum L.) were sampled at the ripening stage (Feekes scale 11) from four different fields in Almaty, Kazakhstan. Brown lesions (3 to 5 mm in length) were present on the roots of sampled plants, with 20% incidence. To determine the causal agent, diseased roots were surface disinfected in sodium hypochlorite solution (1%) for 3 min, rinsed three times with sterile distilled water, air-dried in a laminar flow hood, and plated onto one-fifth strength potato dextrose agar (PDA) supplemented with 50 ppm chloramphenicol. After 3 days, the hyphal fragments that developed from the sections were transferred to fresh PDA and incubated at 23°C with a 12-h photoperiod for 7 days to obtain pure cultures. Brown pigmented fungal colonies with a constriction at the base of hyphal branches, septa near the branching point, and right-angled branching resembling Rhizoctonia solani were observed. The identification anastomosis group (AG) of a representative isolate for each field was conducted by sequencing the internal transcribed spacer (ITS) region of rDNA with the universal primers ITS4 and ITS5 (White et al. 1990). The resulting 693-bp sequences were deposited in GenBank (accession nos. MW898143–MW898146). These sequences were 100% identical to the isolate 8Rs of R. solani AG2-1 (accession no. AF354063). To confirm the pathogenicity of the four isolates, the colonized wheat kernels method described by Demirci (1998) was used to inoculate a sterile potting mix containing peat, vermiculite, and soil (1:1:1 v/v/v) into which wheat (cv. Seri) was planted. Control pots were inoculated with sterile wheat kernels using the same procedure. Wheat plants were left to grow for 4 weeks under controlled environmental conditions with a 23°C temperature regime. During the period that the plants remained in the glasshouse, the typical light regime was 16 h. Brown lesions were observed on the roots of plants in the inoculated pots whereas no symptoms were observed on plants grown in control pots. R. solani was consistently reisolated from symptomatic plants, thereby confirming Koch’s postulates. To our knowledge, this is the first report of R. solani AG2-1 on roots of wheat in Kazakhstan. R. solani AG2-1 isolates have been previously reported to be a weak pathogen to wheat (Jaaffar et al. 2016; Özer et al. 2019; Roberts and Sivasithamparam 1986; Sturrock et al. 2015). We suggest further studies are required to characterize the impact of R. solani AG2-1 in wheat. Considering crop rotation, the selection of nonhost crops to this AG group is important to pathogen management, by reducing the amount of inoculum in the soil.The author(s) declare no conflict of interest.References:Demirci, E. 1998. Plant Pathol. 47:10. https://doi.org/10.1046/j.1365-3059.1998.00214.x Crossref, ISI, Google ScholarJaaffar, A. K., et al. 2016. Phytopathology 106:459. https://doi.org/10.1094/PHYTO-09-15-0208-R Link, ISI, Google ScholarÖzer, G., et al. 2019. Plant Dis. 103:2132. https://doi.org/10.1094/PDIS-02-19-0388-PDN Link, Google ScholarRoberts, F. A., and Sivasithamparam, K. 1986. Neth. J. Plant Pathol. 92:185. https://doi.org/10.1007/BF01977685 Crossref, ISI, Google ScholarSturrock, C. J., et al. 2015. Front. Plant Sci. 6:461. https://doi.org/10.3389/fpls.2015.00461 Crossref, ISI, Google ScholarWhite, T. J., et al. 1990. Page 315 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, CA. https://doi.org/10.1016/B978-0-12-372180-8.50042-1 Google ScholarThe author(s) declare no conflict of interest.DetailsFiguresLiterature CitedRelated Vol. 105, No. 11 November 2021SubscribeISSN:0191-2917e-ISSN:1943-7692 DownloadCaptionFoliar mottling and interveinal yellowing symptoms on melon leaves in the Central Valley of California (S. Mondal et al.). Photo credit: W. M. Wintermantel. Improved wheat plant growth in Pratylenchus neglectus infested soil by applying aldicarb at the time of planting (R. W. Smiley et al.). Photo credit: R. W. Smiley. Mosaic and feathery mottle on taro foliage caused by dasheen mosaic virus (C. Escalante et al.). Photo credit: R. A. Valverde. Metrics Downloaded 768 times Article History Issue Date: 11 Jan 2022Published: 15 Nov 2021First Look: 25 May 2021Accepted: 24 May 2021 Page: 3744 Information© 2021 The American Phytopathological SocietyKeywordsRhizoctonia solanifungifield cropswheatdisease development and spreadpathogen detectionThe author(s) declare no conflict of interest.PDF downloadCited ByFungal Pathogens Associated with Crown and Root Rot of Wheat in Central, Eastern, and Southeastern Kazakhstan19 April 2022 | Journal of Fungi, Vol. 8, No. 5Surveillance of Pathogenicity of Rhizoctonia solani Japanese Isolates with Varied Anastomosis Groups and Subgroups on Arabidopsis thaliana6 January 2022 | Life, Vol. 12, No. 1" @default.
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