Erkol Demirci

Erkol Demirci
Karadeniz Technical University · Faculty of Science, Department of Molecular Biology and Genetics

PhD

About

45
Publications
9,358
Reads
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539
Citations
Citations since 2017
10 Research Items
265 Citations
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
Introduction
Erkol Demirci currently works at the Department of Molecular Biology and Genetics, Faculty of Science, Karadeniz Technical University,Trabzon, Turkey. Erkol does research in Microbiology, Mycology, Plant Pathology and Molecular Biology.
Additional affiliations
March 2017 - present
Karadeniz Technical University
Position
  • Professor

Publications

Publications (45)
Article
Full-text available
This study was conducted to test Clonostachys isolates in the biological control of wilt diseases caused by Verticillium dahliae on strawberry plants. As a result of the isolations made from strawberry plants, 32 Clonostachys isolates were obtained. Cultural, morphological and molecular characterization were used for the identification of these iso...
Article
Full-text available
This study was carried out to determine the anastomosis groups (AG) and pathogenicity of Rhizoctonia isolates that cause web blight on the aerial parts of bean plants in Erzincan province. At the result of the study, totally, 38 Rhizoctonia isolates were obtained from bean pods, and their anastomosis groups were identified using classical and molec...
Article
Full-text available
This study was carried out to determine anastomosis groups and pathogenicity of 166 Rhizoctonia isolates obtained from strawberry plant samples in Erzincan province, Turkey during 2009 and 2010. Rhizoctonia species and anastomosis groups (AGs) of all the isolates were determined using classical techniques. Molecular characterizations of the selecte...
Article
Full-text available
This study was conducted to determine anastomosis groups and pathogenicity of Rhizoctonia spp. isolates from faba bean plants. Totally, 43 Rhizoctonia isolates were obtained from root crown and/or basal stems of plants and their anastomosis groups (AGs) were identified. Of these isolates, 48.8% were Rhizoctonia solani, and 51.2% were binucleic Rhiz...
Article
Full-text available
This study was carried out to determine the alternative weed hosts of Fusarium spp. in potato fields in Erzurum province. Isolations were made from 15 weed species (Amaranthus retroflexus, Anchusa arvensis, Avena fatua, Centaurea depressa, Chenopodium album, Cirsium arvense, Convolvulus arvensis, Euphorbia spp., Hibiscus trionum, Lallemantia canesc...
Article
Background Aim of the study was to produce α-amylase cheaply from Rhizoctonia solani AG-4 strain ZB-34 by solid-state fermentation and investigate its suitability for some industries. Methods Rhizoctonia solani AG-4 strain ZB-34 α-amylase was purified with starch affinity method. Results The best production of enzyme was achieved by using corn br...
Article
Full-text available
Black root rot in strawberry is a disease complex of several different fungi including Rhizoctonia species. This study was carried out to identify anastomosis groups and pathogenicity of Rhizoctonia isolates from the root of strawberry plants in the province of Erzurum, in Eastern Anatolia, Turkey. Three hundred and six Rhizoctonia isolates were ob...
Article
Full-text available
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 accepte...
Article
Full-text available
In this study the use of 73 bacteria, isolated from rhizosphere area of tea (Camellia sinensis) plants in Black Sea Region in Turkey, as potential biocontrol agent against root rot disease caused by Rhizoctonia solani that was known as an important disease on potato and bean plants in Turkey and in the world were investigated. In in vitro condition...
Article
Full-text available
This study was performed to determine Fusarium species caused wilt disease on strawberry plants in Erzurum province between 2005 and 2007. Plant samples showing wilt symptoms were collected from strawberry growing areas in August and September. At the end of the isolation studies, 68 isolates of Fusarium spp. were obtained from roots, crowns and/or...
Article
Full-text available
In this study, we analysed a collection of Waitea circina-ta comprising 20 isolates (17 var. zeae; one var. circinata and two var. oryzae) from different localities and hosts with macroscopic anastomosis tests, PCR-RFLP and phyloge-netic analysis of the 18S-28S rDNA-ITS region. Macro-scopic anastomosis was not useful for the identification of W. ci...
Article
Full-text available
One hundred eleven isolates of Verticillium dahliae were obtained from potato plants in Erzurum province, Turkey. The pathogen was isolated from 7.6% of the stems collected. All isolates were assigned to vegetative compatibility groups (VCGs) using nitrate-nonutilizing (nit) mutants. In total, 240 nit mutants were obtained from V. dahliae isolates,...
Article
Full-text available
Unfortunately a mistake was made in the determination of the vegetative compatibility group (VCG) of a number of isolates of Verticillium dahliae, published in the above mentioned paper. Isolates of V. dahliae were typed as VCG 4A due to problems with some tester isolates. When we became aware of the problem, new tester isolates [VCG 4A (BB, P103)...
Article
Full-text available
Forty-five fungal isolates were obtained from sclerotia of Rhizoctonia solani on potato tubers in Erzurum, Turkey. T e interaction between fungal isolates and R. solani was studied in dual culture technique. Some fungal isolates affected R. solani by antibiosis and/or parasitism. Results of the antagonism tests showed that Acremonium sp., Gliocladi...
Article
Full-text available
Pink snow mold, caused by Microdochium nivale, is a serious disease of winter wheat (Triticum aestivum) in the Northern Hemisphere. A field study with artificial inoculation was conducted using 38 winter wheat cultivars during the 2002-2003 at Erzurum, Turkey. Significant differences were detected among cultivars for reaction and yield components t...
Article
Full-text available
Powdery mildew symptoms were observed on the leaves of horse chestnut (Aesculus hippocastanum) which is common in urban areas of Ordu province, Turkey. The pathogen was identified as Erysiphe flexuosa based on morphological characters. This is the first report of E. flexuosa on horse chestnut from Turkey.
Article
Full-text available
Ten isolates of Verticillium biguttatum were obtained from sclerotia of Rhizoctonia solani on potato tubers in Erzurum, Turkey. The interaction between V. biguttatum and R. solani was studied in vitro and in vivo. V. biguttatum isolates affected R. solani by antibiosis and parasitism. All isolates of V. biguttatum inhibited the growth of R. solani...
Article
Full-text available
Fifteen species of weedy plants were collected from potato fields between July and September 2006 in Erzu- rum (Turkey). In total, 21 isolates of Verticillium dahliae were obtained from Cirsium arvense, Convolvulus arven- sis, Chenopodium album, Polygonum lapathifolium and Sinapis arvensis. Of these, 15 were isolated from C. arvense, and one or two...
Article
Full-text available
In this study, a total of 17 Plant Growth Promoting Rhizobacteria (PGPR) strains, consisting of eight different species (Bacillus subtilis, Bacillus pumilus, Burkholderia cepacia, Pseudomonas putida, Bacillus amyloliquefaciens, Bacillus atrophaeus, Bacillus macerans and Flavobacter balastinium), were tested for antifungal activity in in vitro (on P...
Article
Full-text available
In 2003 and 2005, routine disease surveys were conducted in rice (Oryza sativa) fields in Artvin and Samsun provinces, Turkey. In total, 41 fields were sampled from four districts. Distinct symptoms consisting of brown to black lesions that expanded and girdled the sheath were observed in one of the five fields surveyed in the Yusufeli district (Ar...
Article
Full-text available
The small poplar longhorn beetle, Saperda populnea is an important pest of Lombardy poplars (Populus nigra L.) in Turkey. A survey for natural entomopathogenic fungi of S. populnea larvae was made in Erzurum, Turkey, during the period 2004-2005. Larvae (13.5%) infected with a strain of the fungus Beauveria bassiana were found. The pathogenicity of...
Article
Full-text available
Orchis palustris Jacq. is a wild orchid native to wetlands in eastern Anatolia. During June of 2003, near Erzurum, Turkey, a decline of this orchid was observed in several meadows that had been irrigated for forage production. Stems were chlorotic, wilted, and collapsed. There was a soft, watery rot at the crowns and lower stems. White mycelium and...
Article
Full-text available
This study was conducted to obtain virus-free propagation materials from Granola, Pasinler 92 and Caspar potato ( Solanum tuberosum L.) cultivars infected with potato virus X (PVX), potato virus Y (PVY) and potato leaf roll virus (PLRV) by using meristem-tip culture. For in vitro propagation, it was tested the effect of different combinations and c...
Article
Full-text available
One hundred and eleven Fusarium isolates were obtained from crowns and roots of sainfoin plants (Onobrychis viciifolia) affected by crown and root rot, grown in Erzurum (Turkey) during 1998 and 1999. Fusarium acuminatum (55% of isolates determined), F. solani (17%), F. oxysporum (14%), F. avenaceum (8%), F. equiseti (4%), and F. proliferatum (2%) w...
Article
Full-text available
SUMMARY Two hundred twenty seven isolates of Rhizoctonia spp. were obtained from roots and hypocotyls of bean (Phaseolus vulgaris) grown in Erzurum, Turkey. Of these, 111 Rhizoctonia solani were identified as belong- ing to seven anastomosis groups (AG): AG-2-1 (0.9%), AG-3 (2.7%), AG-4 (47.8%), AG-5 (36.9%), AG-9 (8.1%), AG-10 (0.9%) and AG-11 (2....
Article
Full-text available
Four-hundred-sixty-eightFusarium andFusarium-like isolates were obtained from crowns and subcrown internodes of winter wheat grown in Erzurum, Turkey. Of these isolates, 34.8% wereFusarium acuminatum, 32.3% wereF. equiseti, 16.9% wereF. oxysporum, 15.0% wereMicrodochium nivale (formerlyFusarium nivale), 0.6% wereF. tabacinum and 0.4% wereF. solani....
Article
Full-text available
Three-hundred-twenty-five isolates ofRhizoctonia (215R. solani and 110 binucleateRhizoctonia) were obtained from roots and crowns of alfalfa, sainfoin and common vetch grown in Erzurum, Turkey. The isolates were assigned to five anastomosis groups (AG) ofR. solani (AG-2-1, AG-3, AG-4, AG-5, and AG-10) and two anastomosis groups of binucleateRhizoct...
Conference Paper
Full-text available
Horoz ibigi (Amaranthus retroflexus L.)'nin Alternaria alternata (Fr.) Keissler fungusu ile biyolojik mücadelesi üzerinde arastu-malar Cafer EKEN 1 İrfan ÇORUH 1 Erkol DEMIRCİ 1 Hüseyin ZENGİN 1 Özet Pasinler (Erzurum)'de 2001 yılında yapılan sürveylerde tek yıllık bir yabancı ot olan Amaranthus retroflexus L. (horoz ibigi) bitkisinin yapraklarında...
Article
Full-text available
Trematosphaeria circinans on Medicago sativa, a new fungus species for Turkish mycoflora, is described and illustrated"
Article
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During the summer of 1997 and 1998, a pathogen identified as Colletotrichum truncatum (Schwein.) Andrus & W.D. Moore was isolated from lesions on stems of alfalfa (Medicago sativa L.) plants in Erzurum, Turkey. Typical symptoms on stems of mature plants were large, sunken, irregularly shaped black lesions. Twenty-eight cultures of C. truncatum were...
Article
Full-text available
In 1996, 165 samples of corn (Zea mays L.) kernels to be tested for seed-borne fungi were obtained from five provinces throughout the major corn-producing areas in the eastern Black Sea Region of Turkey: Artvin (41 samples), Rize (28 samples), Trabzon (32 samples), Giresun (30 samples), and Ordu (34 samples). A subsample of kernels (≈100 g each) fr...
Article
Full-text available
In 1997, during a study to determine the pathogenic fungi on Johnsongrass (Sorgum halepense) in the Yusufeli District of Artvin Province, 10 isolates of a Rhizoctonia sp. were obtained from necrotic roots. In anastomosis tests, Johnsongrass isolates fused at low frequency with the Rhizoctonia sp. (teleomorph: Waitea circinata var. circinata) and R....
Article
Ninety-eight isolates of Rhizoctonia spp. were obtained from barley and wheat grown in Erzurum, Turkey. Of these, 78% were Rhizoctoniasolani (AG-2 type 1, AG-3, AG-4, AG-5 and AG-11), 10% were binucleate Rhizoctonia (AG-I and AG-K) and the remainder were Waitea circinata var circinata (Rhizoctonia sp.). Among the binucleate Rhizoctonia, AG-I was no...
Article
Full-text available
A high yielding chickpea (Cicer arietinum L.) cultivar 'Aziziye-94' (FLIP 84-15C) has been registered for introduction in order to increase chickpea production in the Eastern Anatolian region. However, serious levels of wilt and root rot diseases have been observed in seed production fields, indicating that the susceptibility of cultivar 'Aziziye-9...
Article
Full-text available
In this study Drechslera sorokiniana incidence was determined on subcrown internod and crowns of wheat and barley samples collected from Erzurum region in 1994 and 1995. Mycelial development and sporulation were investigated in the laboratory in 3 light periods and 4 agar media. Furthermore, pathogenicity tests were carried out in greenhouse on fiv...

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