Person: Imren, M.
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Imren
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M.
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Imren, M.
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0000-0002-7217-909223 results
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- Incidence of cereal cyst nematodes in the East Anatolia Region in Turkey(Russian Society of Nematologists, 2015) Toktay, H.; Imren, M.; Ocal, A.; Waeyenberge, L.; Viaene, N.; Dababat, A.A.
Publication - Occurrence, identification and phylogenetic analyses of cereal cyst nematodes (Heterodera spp.) in Turkey(Elsevier, 2017) Jiang-Kuan Cui; Huan Peng; Shiming Liu; Erginbas Orakci, G.; Imren, M.; Dababat, A.A.; De-Liang Peng
Publication - Morphological and molecular identification of cyst nematode species (Heterodera spp.) in Algerian cereal fields(Institute of Plant Protection – National Research Institute : Polish Academy of Sciences, 2019) Smaha, D.; Mokrini, F.; Imren, M.; Mokabli, A.; Dababat, A.A.
Publication - First report of Fusarium hostae causing crown rot on wheat in Azerbaijan(American Phytopathological Society (APS), 2019) Özer, G.; Imren, M.; Bayraktar, H.; Paulitz, T.C.; Muminjanov, H.; Dababat, A.A.
Publication - Identification of Heterodera latipons using PCR with sequence characterised amplified region (SCAR) primers(Bolu Abant Izzet Baysal University, 2019) Imren, M.; Koca, A.S.; Dababat, A.A.
Publication - First report of Rhizoctonia solani AG-4 HGII and AG-2-1 causing root rot of wheat in Azerbaijan(American Phytopathological Society (APS), 2019) Özer, G.; Göre, M.E.; Imren, M.; Khalilova, S.; Muminjanov, H.; Dababat, A.A.
Publication - Morphometric and genetic variability among Mediterranean cereal cyst nematode (Heterodera latipons) populations in Turkey(The Scientific and Technology Research Council of Turkey, 2018) Imren, M.; Yildiz, S.; Toktay, H.; Duman, N.; Dababat, A.A.The Mediterranean cereal cyst nematode, Heterodera latipons, is an important plant parasitic nematode that negatively impacts cereal production worldwide, particularly in the Mediterranean Basin. Successful control of cereal cyst nematodes requires knowledge of the nematode species/pathotypes and their biology. However, little information is currently available concerning the phenotypic and genotypic variability of H. latipons populations in Turkey. This study analyzed the morphological/morphometric and genetic characteristics of Turkish H. latipons populations to define intraspecific distinctions between them. Morphological and morphometric studies focused on the pattern of the perineal region of cysts and second stage juveniles (J2), while the molecular analyses used sequenced ITS-rDNA regions targeting the internal transcribed spacer (ITS) region of rDNA. The data from these investigations demonstrate that nematode populations from Adana and Hatay provinces differ from the populations collected in Kilis, Gaziantep, and Mardin provinces. These phenotypic and genotypic differences between H. latipons populations may indicate that they are heterogenic, with at least two pathotypes. To date, this study is the most comprehensive analysis identifying H. latipons populations in major wheatproducing areas of Turkey.
Publication - Distribution and diversity of cyst nematode (Nematoda: Heteroderidae) populations in the Republic of Azerbaijan, and their molecular characterization using ITS-rDNA analysis(Organization of Nematologists of Tropical America, 2019) Dababat, A.A.; Muminjanov, H.; Erginbas Orakci, G.; Ahmadova Fakhraddin, G.; Waeyenberge, L.; Yildiz, S.; Duman, N.; Imren, M.Cereal cyst nematodes (Heterodera spp.) are a significant threat to global cereal production systems and choosing the correct management strategy requires knowledge and identification of various species. We conducted a survey across the main cereal-growing regions of the Republic of Azerbaijan in 2017. Cyst-forming nematodes were detected in 34 samples (44.7%), of which 28 were identified as H. filipjevi or H. avenae using internal transcribed spacer (ITS)-rDNA sequencing. Six populations were unidentifiable to species level and were recorded as belonging to the H. avenae group. H. filipjevi was the dominant species, found in 19 samples (25%) from the provinces of Qobustan, İsmailli, Oguz, Sheki, Barda, and Kurdamir. H. avenae was detected in 9 samples (11.8%) across the provinces of İsmailli, Oguz, and Sheki. ITS-rDNA phylogenetic analyses showed that populations of H. filipjevi clustered in one group with two subgroups, all supported by high bootstrap values. Populations of H. avenae also clustered in one group with two subgroups. Genetic dissimilarities were higher within populations of H. filipjevi when compared to populations of H. avenae. The density of many of these cyst populations approached or exceeded the maximum threshold level for economic losses. This is the first report on H. filipjevi and H. avenae in Azerbaijan. The knowledge of cereal cyst nematode presence is extremely important for Azerbaijan’s agricultural industry when assessing the occurrence and distribution of soilborne diseases. Management measures to control cereal cyst nematodes should be directed towards breeding for resistant germplasm, crop rotation, and implementing other management practices.
Publication - First report of the cereal cyst nematode (Heterodera Filipjevi) on wheat in Algeria(American Phytopathological Society (APS), 2018) Smaha, D.; Mokrini, F.; Imren, M.; Mokabli, A.; Dababat, A.A.Cereal cyst nematodes (CCNs) are an important group of sedentary plant-parasitic nematodes that restrict production of cereal crops throughout the world (Smiley et al. 2017). Heterodera filipjevi is considered one of the most destructive Heterodera species and causes significant damage in global wheat production (Dababat et al. 2015). In April 2016, two populations of cyst nematode were collected from Lamtar (35°4′4″ N; 0°47′53″ W) and Telagh (34°47′6″ N; 0°34′23″ W) wheat (Triticum durum) fields of Sidi Bel Abbes province in Algeria. The wheat fields had stunted patches, poor plant growth, chlorotic lower leaves, and few or no tillers. Cyst extraction from soils taken from the Lamtar and Telagh fields resulted in 9 and 11 cysts per 100 cm3 of soil, respectively. The cysts were extracted from soil using a Fenwick can technique (Fenwick 1940) and identified by morphology and morphometric analysis as well as by internal transcribed spacer (ITS)-rDNA sequencing. Morphologically, the cysts were lemon shaped with a posterior protuberance. The vulval cone was bifenestrate with horseshoe-shaped semifenestra and had strongly developed bullae and an underbridge. Measurements (range, mean ± SD) of cysts (n = 12) were as follows: body length including neck (670 to 871 µm, 782.6 ± 47.0 µm); body width (360 to 510 µm, 455 ± 42 µm); neck length (75 to 129 µm, 99.2 ± 18.6 µm); fenestra length (40 to 59 µm, 48.4 ± 8.5 µm); fenestra width (22 to 28 µm, 25 ± 2.4 µm); underbridge (78 to 88 µm, 83 ± 5 µm); and vulval slit (6 to 10 µm, 7.7 ± 1.6 µm). Measurements of J2 (n = 15) were as follows: body length (458 to 588 µm, 524 ± 26 µm); stylet (23 to 26 µm, 24.3 ± 0.8 µm) with anchor-shaped basal knobs; tail (46 to 61 µm, 57.7 ± 3.1 µm); and hyaline tail terminal (29 to 40 µm, 33.5 ± 2.1 µm). The values of the morphological and morphometrical characters of both populations were within the range of those from H. filipjevi (Subbotin et al. 2003). Molecular observations were performed, and DNA was extracted from two juveniles from two different cysts separately (Holterman et al. 2006). Ribosomal DNA from the ITS was PCR amplified from a single cyst from each population using primers TW81 (5′-GTTTCCGTAGGTGAACCTGC-3′) and AB28 (5′-ATATGCTTAAGTTCAGCGGGT-3′) (Subbotin et al. 2003), respectively, and sequenced. Two of the nucleotide sequences of ITS (accession nos. KX574302 and KX574299) regions were submitted to GenBank. To verify the identity of the sequences, sequenced products were subjected to a database search using BLAST. This comparison revealed a sequence similarity of 98 to 99% with H. filipjevi. Therefore, the morphological and molecular data revealed the existence of H. filipjevi in Algeria. Reproduction of H. filipjevi on the durum wheat (cultivar Capa) was confirmed by inoculating 500 viable eggs onto 5-week-old wheat seedlings grown in pots (10-cm height and 7-cm diameter) filled with sterilized sand at 22°C. Pots of noninoculated seedlings served as controls. Sixty-three days after inoculation, an average of (46 cysts, n = 3) were extracted from both soil and root, demonstrating multiplication on this host. No cyst was found on the control plants. To our knowledge, this detection represents the first report of H. filipjevi in Algeria. Because wheat has an important socioeconomic value for Algeria, additional surveys are needed in other wheat-growing areas, and control measures should be taken to stop the multiplication of this species. The use of resistant wheat varieties and proper crop rotation is recommended.
Publication - First report of Heterodera hordecalis, a cereal cyst nematode, on wheat in Algeria(American Phytopathological Society (APS), 2018) Smaha, D.; Mokrini, F.; Imren, M.; Mokabli, A.; Dababat, A.A.In June 2016, six soil samples were collected from durum wheat (Triticum durum) fields of Guellal (36°2'7" N; 5°20'12" E), Hammam Sokhna (35°58’60" N; 5°48’0" E), Ain Arnat (36°10’60" N; 5°19’0" E), Seriana (35°41’37'' N; 6°11’12'' E), Sebaine (33°39’0'' N; 0°12’0'' E), and Maghnia (34°51’42" N; 1°43’50" W),located in the Algerian provinces of Setif, Batna, Tiaret, and Tlemcen. The surveyed wheat fields had stunted patches, poor plant growth, chlorotic lower leaves, and few or no tillers. Cysts were extracted from the soil using a Fenwick Can technique (Fenwick 1940) and identified. Morphologically, cysts were rounded, deep yellow to brown, with a thick subcrystalline layer, small vulval cone, bifenestrate, two almost circular semifenestrates separated from each other by a rather wide vulval bridge, vulval slit obviously covered by a flap, and bullae present at the underbridge level.
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