Jafar Abdollahzadeh - Academia.edu (original) (raw)
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Papers by Jafar Abdollahzadeh
Journal of Plant Pathology
Scientific Reports
To identify apple canker casual agents and evaluate their pathogenicity and virulence in apple pr... more To identify apple canker casual agents and evaluate their pathogenicity and virulence in apple production hubs including West Azarbaijan, Isfahan and Tehran provinces; samples were collected from symptomatic apple trees. Pathogenic isolates on the detached branches were identified as Cytospora cincta, Diplodia bulgarica, Neoscytalidium dimidiatum and Eutypa cf. lata. E. cf. lata was reported as a potential apple canker causal agent in Iran for the first time based on the pathogenicity test on the detached branches, whereas it caused no canker symptoms in apple trees until 6 months after inoculation. Currently, E. cf. lata seems to be adapted to a single city. C. cincta, D. bulgarica and N. dimidiatum caused canker symptoms in apple trees. “C. cincta” and also “C. cincta and N. dimidiatum” were the most widespread and aggressive apple canker species, respectively, associated with apple canker in Iran. Therefore, they are considered to be the main threat to apple production in Iran an...
Persoonia - Molecular Phylogeny and Evolution of Fungi, 2014
Studies in Mycology, 2021
Journal of Plant Pathology
Journal of Plant Pathology
Journal of Plant Pathology
European Journal of Plant Pathology, Mar 18, 2016
Severe trunk and branch diseases of hazelnut trees have recently been observed in several groves ... more Severe trunk and branch diseases of hazelnut trees have recently been observed in several groves in Sardinia (Italy). Since there is little information about the aetiology of these diseases and given the high ecological and economic importance of these agro-systems, an in-depth study was carried out. From autumn 2012 to spring 2014, sixty samples of twigs and branches of hazelnut trees showing exudates and different types of canker (sunken with wedge-shaped necrotic sector, open canker and Cytospora canker) were collected in the main hazelnut growing area in the centre of the island. Based on morphology, colony appearance and DNA sequence data, seven species belonging to four genera and three families were isolated and identified. These included Diplodia sapinea, D. seriata, Dothiorella iberica, Do. parva and Do. symphoricarposicola (Botryosphaeriaceae), Gnomoniopsis smithogilvyi (Gnomoniaceae) and Anthostoma decipiens (Diatrypaceae). In addition, two new species namely Diaporthella cryptica sp. nov. and Dothiorella omnivora sp. nov. are described. Pathogenicity trials carried out on wounded hazelnut branches showed that three species, Anthostoma decipiens, Diaporthella cryptica and Diplodia seriata are aggressive pathogens on hazelnut. Results obtained have allowed us to clarify, almost a century after its first description, the aetiology of the disease known as Cytospora canker of hazelnut and to reveal the existence of three evolutionarily distinct lineages for its causal agent A. decipiens. The diversity of fungal pathogens associated with twig and branch cankers of hazelnut is greater than previously recognised and further studies are necessary to determine the exact role played by each species and their possible synergistic interaction.
Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviole... more Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviolet radiation, temperature, and moisture and grow in exposed habitats such as stone surfaces. In a survey on fungi associated with fruit rots, leaf spots, canker, gummosis, dieback and trunk diseases of grapevine and walnut trees in Kurdistan province (Iran), some black meristematic fungal isolates resemble to Endoconidioma/Hormonema were found on necrotic twigs. Based on morphology and sequence data (28S rDNA and ITS) the isolates were characterized as Endoconidioma populi as a first record for Iran mycobiota. This is a first report of this species from Juglans regia and Vitis vinifera.
Diplodia bulgarica has been recently identified on apple trees in Bulgaria and Iran. This fungus ... more Diplodia bulgarica has been recently identified on apple trees in Bulgaria and Iran. This fungus was isolated from apple trees in the west of Iran, showing canker, gummosis, dieback and twig blight symptoms. To determine its significance as a pathogen on apple, Koch's postulates were fulfilled by stem inoculation of 2-year-old apple trees (cv. Golden Delicious) under greenhouse and field conditions. Results confirmed D. bulgarica as a highly virulent pathogen on apple under greenhouse and field conditions. This is the first record of D. bulgarica as a pathogen of apple, emphasizing the need to study biological and genetic aspects of this new pathogen.
Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviole... more Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviolet radiation, temperature, and moisture and grow in exposed habitats such as stone surfaces. In a survey on fungi associated with fruit rots, leaf spots, canker, gummosis, dieback and trunk diseases of grapevine and walnut trees in Kurdistan Province (Iran), some black meristematic fungal isolates resemble to Endoconidioma/Hormonema were found on necrotic twigs. Based on morphology and sequence data (28S rDNA and ITS) the isolates were characterized as Endoconidioma populi as a first record for Iran mycobiota. This is a first report of this species from Juglans regia and Vitis vinifera.
Journal of entomology and zoology studies, 2016
Quality and quantity of DNA extraction is important in molecular studies. In this research, four ... more Quality and quantity of DNA extraction is important in molecular studies. In this research, four methods were evaluated in order to choose the most appropriate way in DNA extraction. DNA extraction methods included the optimal salt, phenol – choloroform, CTAB and CTAB + SDS. The quantity and quality of DNA extracted were compared with spectrophotometry and agarose gel respectively. Results indicated that CTAB+SDS method with the average purity of 1.89 (absorption ratio 260nm/280nm) was better than to other methods for DNA extraction in Apis mellifera.
Persoonia - Molecular Phylogeny and Evolution of Fungi
Plant Pathology Journal, 2006
Journal of Plant Pathology
Scientific Reports
To identify apple canker casual agents and evaluate their pathogenicity and virulence in apple pr... more To identify apple canker casual agents and evaluate their pathogenicity and virulence in apple production hubs including West Azarbaijan, Isfahan and Tehran provinces; samples were collected from symptomatic apple trees. Pathogenic isolates on the detached branches were identified as Cytospora cincta, Diplodia bulgarica, Neoscytalidium dimidiatum and Eutypa cf. lata. E. cf. lata was reported as a potential apple canker causal agent in Iran for the first time based on the pathogenicity test on the detached branches, whereas it caused no canker symptoms in apple trees until 6 months after inoculation. Currently, E. cf. lata seems to be adapted to a single city. C. cincta, D. bulgarica and N. dimidiatum caused canker symptoms in apple trees. “C. cincta” and also “C. cincta and N. dimidiatum” were the most widespread and aggressive apple canker species, respectively, associated with apple canker in Iran. Therefore, they are considered to be the main threat to apple production in Iran an...
Persoonia - Molecular Phylogeny and Evolution of Fungi, 2014
Studies in Mycology, 2021
Journal of Plant Pathology
Journal of Plant Pathology
Journal of Plant Pathology
European Journal of Plant Pathology, Mar 18, 2016
Severe trunk and branch diseases of hazelnut trees have recently been observed in several groves ... more Severe trunk and branch diseases of hazelnut trees have recently been observed in several groves in Sardinia (Italy). Since there is little information about the aetiology of these diseases and given the high ecological and economic importance of these agro-systems, an in-depth study was carried out. From autumn 2012 to spring 2014, sixty samples of twigs and branches of hazelnut trees showing exudates and different types of canker (sunken with wedge-shaped necrotic sector, open canker and Cytospora canker) were collected in the main hazelnut growing area in the centre of the island. Based on morphology, colony appearance and DNA sequence data, seven species belonging to four genera and three families were isolated and identified. These included Diplodia sapinea, D. seriata, Dothiorella iberica, Do. parva and Do. symphoricarposicola (Botryosphaeriaceae), Gnomoniopsis smithogilvyi (Gnomoniaceae) and Anthostoma decipiens (Diatrypaceae). In addition, two new species namely Diaporthella cryptica sp. nov. and Dothiorella omnivora sp. nov. are described. Pathogenicity trials carried out on wounded hazelnut branches showed that three species, Anthostoma decipiens, Diaporthella cryptica and Diplodia seriata are aggressive pathogens on hazelnut. Results obtained have allowed us to clarify, almost a century after its first description, the aetiology of the disease known as Cytospora canker of hazelnut and to reveal the existence of three evolutionarily distinct lineages for its causal agent A. decipiens. The diversity of fungal pathogens associated with twig and branch cankers of hazelnut is greater than previously recognised and further studies are necessary to determine the exact role played by each species and their possible synergistic interaction.
Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviole... more Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviolet radiation, temperature, and moisture and grow in exposed habitats such as stone surfaces. In a survey on fungi associated with fruit rots, leaf spots, canker, gummosis, dieback and trunk diseases of grapevine and walnut trees in Kurdistan province (Iran), some black meristematic fungal isolates resemble to Endoconidioma/Hormonema were found on necrotic twigs. Based on morphology and sequence data (28S rDNA and ITS) the isolates were characterized as Endoconidioma populi as a first record for Iran mycobiota. This is a first report of this species from Juglans regia and Vitis vinifera.
Diplodia bulgarica has been recently identified on apple trees in Bulgaria and Iran. This fungus ... more Diplodia bulgarica has been recently identified on apple trees in Bulgaria and Iran. This fungus was isolated from apple trees in the west of Iran, showing canker, gummosis, dieback and twig blight symptoms. To determine its significance as a pathogen on apple, Koch's postulates were fulfilled by stem inoculation of 2-year-old apple trees (cv. Golden Delicious) under greenhouse and field conditions. Results confirmed D. bulgarica as a highly virulent pathogen on apple under greenhouse and field conditions. This is the first record of D. bulgarica as a pathogen of apple, emphasizing the need to study biological and genetic aspects of this new pathogen.
Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviole... more Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviolet radiation, temperature, and moisture and grow in exposed habitats such as stone surfaces. In a survey on fungi associated with fruit rots, leaf spots, canker, gummosis, dieback and trunk diseases of grapevine and walnut trees in Kurdistan Province (Iran), some black meristematic fungal isolates resemble to Endoconidioma/Hormonema were found on necrotic twigs. Based on morphology and sequence data (28S rDNA and ITS) the isolates were characterized as Endoconidioma populi as a first record for Iran mycobiota. This is a first report of this species from Juglans regia and Vitis vinifera.
Journal of entomology and zoology studies, 2016
Quality and quantity of DNA extraction is important in molecular studies. In this research, four ... more Quality and quantity of DNA extraction is important in molecular studies. In this research, four methods were evaluated in order to choose the most appropriate way in DNA extraction. DNA extraction methods included the optimal salt, phenol – choloroform, CTAB and CTAB + SDS. The quantity and quality of DNA extracted were compared with spectrophotometry and agarose gel respectively. Results indicated that CTAB+SDS method with the average purity of 1.89 (absorption ratio 260nm/280nm) was better than to other methods for DNA extraction in Apis mellifera.
Persoonia - Molecular Phylogeny and Evolution of Fungi
Plant Pathology Journal, 2006