ABSTRACT The occurrence of Oomycetous pathogens and their pathogenicities on chestnut saplings, grown at four nurseries were investigated in this study. Also, the effectiveness foliage applications phosphorous acid (H 3 PO ) Potassium phosphonate (K 4 ), against Phytophthora cinnamomi which is most common root rot pathogen chestnuts Türkiye was evaluated. Forty‐three isolates obtained using selective media, from sixty plant twenty soil samples collected nurseries. identified by molecular...

Summary Vegetative compatibility types (vc types) of 296 isolates the chestnut blight fungus, Cryphonectria parasitica , were determined. The had been obtained from 32 localities in 11 provinces Black Sea region Turkey. Five vc detected: EU‐1, EU‐12, EU‐14, EU‐2 and EU‐5. number found single varied between one five. All five present only Kastamonu province. Vc type EU‐1 was detected all provinces. accounted for 90.8% isolates. EU‐12 eight 6.8% isolates, whereas or two each EU‐5 Isolates...

Abstract Vegetative compatibility (vc) and mating types genetic diversity of Cryphonectria parasitica isolates were determined using 183 obtained from 215 infected chestnut trees growing in 13 provinces Turkey. Based on the cultural aspects, 143 these evaluated as virulent whereas remaining 40 hypovirulent. When vc classically differentiated, 135 them matched to EU‐1 (82.3%), 29 EU‐12 (17.6%) type, 19 did not match two. molecular vic markers used, all assigned two EU types; 149 (81.4%) 34...

Abstract Vine decline of kiwifruit was found in an orchard the Rize province Turkey. About half vines showed poor growth, leaf discoloration and dieback symptoms. From necrotic feeder roots diseased vines, a Phytophthora sp . isolated. The causal agent disease identified as citrophthora by morphological characteristics comparing sequences Internal Transcribed Spacer (ITS) region. caused bark necroses averaging 4.2 ± 1.4 cm length when inoculated on rooted canes.

Summary Chestnut blight caused by Cryphonectria parasitica is a serious disease of Castanea sativa in the Black Sea region Turkey. During surveys, dieback and decline symptoms were observed on trees without apparent ink symptoms. necroses, similar to those Phytophthora infections, noted some chestnut coppices saplings one nursery Ordu led an investigation into this complex. Only symptomatic plants showing investigated. Soil samples together with fine roots collected from two directions,...

Biological control of chestnut blight was investigated by using 3 hypovirulent isolates Cryphonectria parasitica, 5 Trichoderma sp., 4 Penicillium and Bacillus sp. isolates. Hypovirulent antagonistic organisms were obtained from samples collected the Black Sea region Turkey, in 2008 2009. Effectiveness microorganisms tested on 3-year-old saplings. In tests, bark disks 6 mm removed stem bases culture virulent isolate C. parasitica first placed into hole then or fungi. strains applied as...

Boxwood (Buxus sempervirens) is a small native tree mostly growing along the coastal areas of Marmara and Black Sea regions Turkey on approximately 1000 hectares. In November 2011, severe blight leaf shedding were observed in Eastern region. Leaves had greyish brown, round diffuse spots, scattered throughout surface (Fig. 1). Thick branches fine roots did not show any symptoms but young side showed dark necrosis as streaks. Disease samples containing leaves, collected from provinces Trabzon...

Summary Chestnut blight destroyed the native chestnut forests in N orth A merica and also severely affected E uropean trees after its introduction 20th century. The ascomycete fungus C ryphonectria parasitica is responsible for this serious disease causes lethal bark cankers on susceptible trees. In urope, however, an infection of . with hypovirus 1 ( CHV ‐1) hypovirulence reduces severity disease. Hypovirulence biologically controls many regions to date. study, our goal was determine...

Summary Severe dieback symptoms were observed in a 490‐ha moist ash ( Fraxinus angustifolia ) lowland forest stand, comprising trees over 100 years old and ha of newly planted F. near Sinop, Turkey. Five the 10 soil samples collected around stem bases diseased baited using leaves yielded Phytophthora sp. This heterothallic species produced non‐caducous, non‐papillate sporangia non‐sterile extract, fluffy, even growth on corn meal potato dextrose agars, suppressed, grated carrot agar....

Abstract Characterization of the Cryphonectria parasitica population was initially done by a phenotypical assessment 40 in vitro grown isolates obtained from 52 healing cankers collected eight important chestnut-growing provinces Turkey. The results Bavendamm test, often correlated indirectly to hypovirulence, suggested 31 possibly hypovirulent and 9 virulent isolates. PCR tests amplified two regions ORFs A B hypovirus 1 (CHV-1) 36 test confirmation more sensitive than test. Partial ORFA...

Some mycoviruses can be considered as effective biocontrol agents, mitigating the impact of phytopathogenic fungi and consequently reducing disease outbreaks while promoting plant health.

Abstract Sweet chestnut ( Castanea sativa ) is an important tree species in the Marmara and Aegean regions of Turkey as these two produce great majority edible nuts, especially those used for marron glacé production. Chestnut forests orchards showing severe dieback symptoms not associated with blight were investigated to determine role Phytophthora spp. decline syndrome. Soil samples collected from around 108 symptomatic trees at 29 sites isolated using soil baiting technique selective...

Summary Dieback symptoms were observed on horse chestnut trees planted approximately 40 years ago in Ankara, Turkey. Lesions at the stem bases of affected similar to those ink disease sweet chestnut. A Phytophthora sp. was isolated from fine roots and soil samples collected around by baiting using leaves. The pathogen identified as citrophthora based several morphological features DNA sequences ITS region. Pathogenicity P. tested inoculation 3‐year‐old saplings. produced large cankers 20...

In Turkey, sweet chestnut, Castanea sativa, is an important species cultivated for wood, tannin and edible nuts. A nut disease was observed on chestnut trees located in the Western Black Sea region of Turkey (40°47′47.92″N-31°20′22.34″E). Symptoms were 19 out 100 nuts collected surveyed area (c. 1–2 ha) October 2021. The casual pathogen isolated from a diseased with brown discolouration (Fig. 1), by placing specimens potato dextrose agar (PDA) after surface sterilisation four minutes 0.5%...

Summary During investigations into the causes of oak decline in six Regional Forestry Directories B lack S ea R egion T urkey, P hytophthora spp. were obtained from one region and ythium collected three regions. The most frequently isolated species, anandrum, when inoculated on stem bases, caused longer cankers than two isolates both plurivora 2 . quercina This is first report anandrum causing disease sessile oak. may contribute Turkey.

Breast cancer (BC) is a significant threat to female health, with both modifiable andnon-modifiable risk factors. It essential monitor patients regularly and raise population awareness. Increasing research also suggests that E-selectin (SELE) may increase tumor angiogenesis the development of cancer. This study investigated SELE single-nucleotide polymorphisms (SNPs) in following positions: rs5367T/C, rs5368C/T, rs5362T/G,and rs5362T/C. Using polymerase chain reaction, differences allele...

In a pilot study, biological control with hypovirus-infected Cryphonectria parasitica was applied in 3 study plots Turkey, June 2013. The aim of this to evaluate the success by verifying establishment released hypovirus (CHV-1) strains using molecular markers. C. isolates were sampled from cankers at different time points: before treatments (April 2013), and 5 months (October 2013) 11 (May 2014) after treatment. total, 255 recovered characterized. First, culture morphology vegetative...

Sweet chestnut, Castanea sativa Mill., is a significant species in Türkiye. The tree has been encountered with numerous diseases. Chestnut blight, caused by Cryphonectria parasitica (Murrill) M. E. Barr, one of the most common diseases having spread to every chestnut-growing region. In this study, effects Bellis® (25.2% Boscalid + 12.8% Pyraclotrobin), fungicide commonly used plant disease control, were evaluated at different doses (10 ppm and 50 ppm) against chestnut blight agent C....

Abstract The chestnut gall wasp (CGW) Dryocosmus kuriphilus is a serious pest of chestnuts ( Castanea sativa ) in many growing areas Turkey. Out 200 galls randomly collected from four different Yalova and Giresun provinces, 116 showed necrosis, while 84 were asymptomatic. Fungi associated with the necrotic asymptomatic determined based on morphology DNA sequencing. Gnomoniopsis smithogilvyi , Colletotrichum acutatum Penicillium glabrum Botrysphaeria dothidea Trichoderma atroviridea Botrytis...