Investigations on soil nematode diversity in three contrasting habitat types in Bolu, Turkey

Şenol YILDIZ

The study investigated nematode diversity in three contrasting habitat types around the Yenicaga Lake, Bolu Province, Turkey, in 2019 and 2020. The Shannon-Wiener index was used to evaluate nematode diversity in different taxonomic categories (order, family and genus level), trophic group and colonizer-persister (c-p) group in grassland, cropland and peatland in two locations, Hamzabey and Adakoy, in the Yenicaga Lake Reserve. The results revealed that there was statistically significant variation in the composition of nematode fauna between the study sites by the assessments of the higher tax ...Более

Кыргызстандын Чүй өрөөнүндө кулпунай (Fragaria ananassa Duch) өстүрүлгөн талааларда өсүмдүк паразиттик нематоддорду аныктоо = A Survey for Plant-Parasitic Nematodes Associated with Strawberry (Fragaria ananassa Duch) Crop in Chui Province, Kyrgyzstan

Tair Esenalı Uulu

Кулпунай Fragaria ananassa Duch. дүйнө жүзүндө кеңири аянттарда өстүрүлгөн, көп жылдык чөп өсүмдүгү. Ал субтропикалык жылуу, салкын климатта эң жакшы өсүп, анын жемиштери өзгөчө өңү, жыты жана даамы менен адамзат үчүн өтө баалуу азык болуп саналат. Кулпунай толук бышкан абалында таза түрүндө, андан сырткары таттууларды жана ичимдиктерди жасоодо колдонулат. Кулпунай өстүрүүчүлүк Кыргызстанда маанилүү жана артыкчылыктуу багыт болуп саналат. Кыргызстанда кулпунай негизинен талаа шарттарында өстүрүлөт, ошондуктан жай мезгилинде бышат жана сатыкка чыгат. Кулпунай башка өсүмдүктөр сыяктуу эле өстүрү ...Более

Control of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in open field tomato crops using the mating disruption technique

Tair Esenalı Uulu

This study was conducted in Meram district of Konya province (Turkey) in 2018 and 2019 to evaluate the efficacy of mating disruption against the tomato leafminer, Tuta absoluta in an open-field tomato growing area. Three pheromone-treated fields and three control fields were used to evaluate the effectiveness of mating disruption in both years. In pheromone-treated fields, mating disruption pheromone was applied once at a rate of 2500 g/ha with a caulking gun. In control fields, only pheromone traps were hung for monitoring and comparing the pest population. Male captures in monitoring pheromo ...Более

The Improving Conditions for the Aerobic Bacteria Performing the Degradation of Obsolete Pesticides in Polluted Soils

Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA | Mahabat KONURBAYEVA

Currently, in the territory of Kyrgyzstan, 50 storage facilities of obsolete pesticides exist; they store about 5000 tons of these hazardous chemicals. The storage conditions have become unusable for a long time. They pose a serious threat to the people living there, livestock, and the environment. The main purpose of this research was the use of selected bacteria with cytochrome P450 genes for the bioremediation of polluted soils around the burial sites in model soil experiments. In the first trial of biodegradation experiments, one contaminated soil was used without any changes in chemical c ...Более

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

İsmail ERPER

Genetic characterization of Erwinia amylovora isolates detected in the wild walnut-fruit forest of South Kyrgyzstan

Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA

Erwinia amylovora, the causal agent of fire blight, was first reported in Kyrgyz orchards in 2008 and, within a few years, the disease has spread throughout most of the northern part of the country. As fire blight expanded and penetrated new areas, it also reached the unique ecosystem constituted by the Arslonbob wild walnut-fruit forests in South Kyrgyzstan. Here, we present the results of field surveys in the forests and in the nearby orchards and gardens of the Jalal-Abad region during the 2019 season. Further, we use genetic profiling of the CRISPR regions to compare the genotypes of the o ...Более

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 ...Более

Nematode Community-Based Soil Food Web Analysis of Ferralsol, Lithosol and Nitosol Soil Groups in Ghana, Kenya and Malawi Reveals Distinct Soil Health Degradations

Şenol YILDIZ

Determining if the vast soil health degradations across the seven major soil groups (orders) of Sub-Saharan Africa (SSA) can be managed on the basis of a one-size-fits-all or location-specific approach is limited by a lack of soil group-based understanding of soil health degradations. We used the relationship between changes in nematode population dynamics relative to food and reproduction (enrichment, EI) and resistance to disturbance (structure, SI) indices to characterize the soil food web (SFW) and soil health conditions of Ferralsol, Lithosol and Nitosol soil groups in Ghana, Kenya and Ma ...Более

First report of charcoal rot caused by Macrophomina phaseolina on common bean in Kyrgyzstan

İsmail ERPER | Saykal BOBUŞOVA

Isolation, Identification, and Characterization of the Nematophagous Fungus Arthrobotrys oligospora from Kyrgyzstan

Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA | Ayperi MURATBEKOVA

Purpose Predatory fungi have been the subject of fundamental studies and their potential as biological control agents against parasitic plant nematodes has been assessed. The aim of the present study was to isolate and identify predatory fungi, performing in vitro and in vivo screening to select highly active strains to control parasitic nematodes. Methods Different nutrient media were used to isolate predatory fungi and determine their morphological and cultural properties. Identification was performed by classical and molecular biology methods. In vitro and in vivo screening was conducted to ...Более

Tracking the dissemination of Erwinia amylovora in the Eurasian continent using a PCR targeted on the duplication of a single CRISPR spacer

Tinatin DOOLOTKELDİEVA

Fire blight is the most devastating disease affecting pome fruit production globally. The pathogen is native to North America and was imported to western Europe in the 1950s, progressively spreading over the continent in the ensuing decades. Previous phylogenetic studies have revealed the extreme genetic homogeneity of the pathogen outside its center of origin, which makes epidemiological studies difficult. These are generally only possible using hypervariable regions of the genome such as those represented by CRISPRs (Clustered Regularly Interspaced Short Palindromic Repeats), which are, howe ...Более

First report of dry rot of potato caused by Fusarium sambucinum in Kyrgyzstan

İsmail ERPER | Sezim COLDOŞBEKOVA

In October 2020, the presence of an intense Fusarium dry rot disease was detected during a survey of potato tubers in the production storage facilities in Chui region, Kyrgyzstan. The species of Fusarium isolates, obtained from infected tubers, were identified as Fusarium sambucinum by using morphological features and phylogenetic analyses of the transcription elongation factor 1-alpha (EF1-alpha) gene. The isolates were pathogenic to potato tubers, and Koch