A new host for Fusarium algeriense causing crown and root rot on barley in Kyrgyzstan

Sezim COLDOŞBEKOVA | İsmail ERPER

After maize, wheat and rice, barley is the most widely planted and economically important cereal crop in the Kyrgyzstan's highlands (Usubaliev et al., 2013) and worldwide. In two barley fields in the Manas district of Bishkek, Kyrgyzstan, diseased plants exhibiting crown and root rot, stunting and brown discolouration on internodes were observed in 2020. Disease incidence was approximately 5 in the two fields.Small sections of root and crown tissues from diseased plants were surface sterilised in 1 (v/v) sodium hypochlorite solution for one minute before being placed onto potato dextrose agar ...More

Fungal Pathogens Associated with Crown and Root Rot in Wheat-Growing Areas of Northern Kyrgyzstan

İsmail ERPER | Şenol YILDIZ | Sezim COLDOŞBEKOVA | Tair Esenalı Uulu

Fungal species associated with crown and root rot diseases in wheat have been extensively studied in many parts of the world. However, no reports on the relative importance and distribution of pathogens associated with wheat crown and root rot in Kyrgyzstan have been published. Hence, fungal species associated with wheat crown/root rot were surveyed in three main wheat production regions in northern Kyrgyzstan. Fungal species were isolated on 1/5 strength potato-dextrose agar amended with streptomycin (0.1 g/L) and chloramphenicol (0.05 g/L). A total of 598 fungal isolates from symptomatic tis ...More

First report of Penicillium expansum causing postharvest fruit rot on pear in Kyrgyzstan

İsmail ERPER | Sezim COLDOŞBEKOVA

Keywords; penicillium fruit rot; postharvest; pyrus communis; RPB2

First report of damping-off on melon seedlings caused by Rhizoctonia solani AG 4 HG-II in Kyrgyzstan

İsmail ERPER

Sensitivity of Fusarium oxysporum f. sp. melongenae, the causal agent of Fusarium wilt of eggplant to some ammonium, potassium, and sodium compounds in vitro and in vivo bioassays

İsmail ERPER

This study evaluated the efficacy of various salts against Fusarium oxysporum f. sp. melongenae (Fomg) in vitro and in vivo bioassays. Ammonium bicarbonate/carbonate, potassium benzoate/sorbate, sodium benzoate/carbonate/metabisulphite at 2.0 entirely halted mycelial growth and spore germination of the fungus. Considering the EC50, minimum inhibitory concentration, and minimum fungicidal concentration values of the salts, sodium metabisulphite was more toxic to the fungus. In soil bioassays, at 0.4 and 0.6, sodium metabisulphite and potassium sorbate reduced the mycelial growth of the fungus b ...More

Characterization and Pathogenicity of Pythium-Like Species Associated with Root and Collar Rot of Kiwifruit in Turkey

İsmail ERPER

During the period of June to October in 2018, a widespread decline was observed on kiwifruit vines in the vineyards located in the Altinordu, Fatsa, and Persembe districts of Ordu province in Turkey. The symptoms were associated with reddish-brown rots expanding from the root to the collar with sparse off-color foliage. Based on the percentage of the total infected samples across 18 vineyards, the most common oomycete species were Globisporangium intermedium (37.1), Phytopythium vexans (34.3), Globisporangium sylvaticum (14.3), Globisporangium heterothallicum (11.4), and Pythium dissotocum (2. ...More

Potential of Turkish Beauveria bassiana isolates for the management of the polyphagous planthopper, Orosanga japonica Melichar 1898 (Hemiptera: Ricaniidae)

İsmail ERPER

Background Entomopathogenic fungi are a potential biological control agent for many pests. In this study, 14 native Beauveria bassiana isolates were molecularly identified and assessed for their virulence and mortality against adults of the polyphagous planthopper Orosanga japonica, Melichar (Hemiptera: Ricaniidae) a polyphagous sap-feeding insect, under laboratory conditions. Results Isolates obtained from naturally infected adults O. japonica were molecularly identified as B. bassiana by sequencing the internal transcribed spacer and 26S large subunit of ribosomal DNA. In the bioassay, the r ...More

Molecular Characterization of Native Entomopathogenic Fungi from Ambrosia Beetles in Hazelnut Orchards of Turkey and Evaluation of Their In Vitro Efficacy

İsmail ERPER

Simple Summary Turkey is the world's largest producer and exporter of hazelnut. Ambrosia beetle species are the most common species of pests for hazelnut in the orchards of Turkey. These beetles cause enormous economic losses by draining hazelnut branches and trees. The techniques for managing ambrosia beetles are limited. The more effective and eco-friendly alternative control methods, including the use of entomopathogenic fungi (EPF), should be included in integrated pest management programs to suppress ambrosia beetle populations. The objectives of the current study were (i) to isolate EPF ...More

First Report of Crown Rot Caused by Fusarium algeriense on Wheat in Kyrgyzstan

İsmail ERPER

Fusarium crown rot of wheat is an economically important disease that leads to significant yield and quality losses, especially in arid and semiarid wheat-growing areas worldwide. In June 2020, winter wheat (Triticum aestivum L.) plants exhibiting crown rot symptoms were identified in a commercial field in Tokbay (43.033719°N, 74.325623°E), Chuy Province, Kyrgyzstan. Diseased plants were stunted and had brown discoloration on internodes of the stem bases and roots. Disease incidence was ∼3%. Ten plants from the field were sampled at the ripening stage to identify the causal agent. Symptomatic ...More

First report of charcoal rot caused by Macrophomina phaseolina on kiwifruit in Turkey

İsmail ERPER

During June and August in 2018, kiwifruit (cv. Hayward) plants exhibiting symptoms of charcoal rot including chlorosis, necrosis, leaf shedding, root rot, and trunk dry rot were observed with an incidence of up 5?n three commercial orchards located in Altınordu, Fatsa and Perşembe districts of Ordu province. After surface sterilization with 1?aClO, small pieces excised from root tissues of diseased plants were rinsed twice in sterile distilled water, dried on sterile filter papers and aseptically transferred to plates containing potato dextrose agar. Ten isolates from the plates were identifie ...More

First report of Rhizoctonia solani AG 1-IB causing root and stem rot of kale (Brassica oleracea var. acephala) in Turkey

İsmail ERPER

Genetic Diversity and Pathogenicity of Rhizoctonia spp. Isolates Associated with Red Cabbage in Samsun (Turkey)

İsmail ERPER

A total of 132 Rhizoctonia isolates were recovered from red cabbage plants with root rot and wirestem symptoms in the province of Samsun (Turkey) between 2018 and 2019. Based on the sequence analysis of the internal transcribed spacer (ITS) region located between the 18S and 28S ribosomal RNA genes and including nuclear staining, these 124 isolates were assigned to multinucleate Rhizoctonia solani, and eight were binucleate Rhizoctonia. The most prevalent anastomosis group (AG) was AG 4 (84? which was subdivided into AG 4 HG-I (81?and AG 4 HG-III (3? followed by AG 5 (10?and AG-A (6? respectiv ...More