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Showing 3 results for Ghasemi
Sulfur Role in Plant Diseases Management
Kamran Ghasemi,
Volume 7, Issue 1 (3-2018)
Abstract

Ghasemi K. 2018. Sulfur role in plant diseases management. Plant Pathology Science 7(1):63-72.

Sulfur (S), as a promoter of plant defense system and fungicidal effect, can have a critical role in organic farming. Presence of sulfuric defense compounds including elemental sulfur, H2S, glutathione, اسیدیتهytochelatins, secondary metabolites and S-rich proteins are vital under stress conditions. As a soil disinfectant, carbon disulfide is widely used against soil-borne pathogens. This is used for controlling the root and crown rot disease caused by Armillaria. Sulfur fumigation is used against powdery mildew in greenhouse production. Fumigation and application of sulfur pad are methods for controlling the grape and some other fruits rot in storage. Besides, sulfur is effective in control of mites, psyllids, and thrips.


Fungal diseases of hazelnut in Iran
Soghra Ghasemi-Doodaran, Mahdi Davari,
Volume 9, Issue 2 ((Spring and Summer) 2020)
Abstract
Ghasemi-Doodaran S, Davari M (2020) Fungal diseases of hazelnut in Iran. Plant Pathology Science 9(2):85-94. DOI: 10.2982/PPS.9.2.85.
 
Hazelnut tree has natural habitats in northwestern Iran in the forests of Ardabil and Gilan provinces. Decline disease is a threatening agent of hazelnut trees in these areas. Symptoms of the disease include weakness, reduced growth, leaf fall and dieback of the branches, branch and trunk canker and root rot that eventually lead to the gradual death or decline of the tree. In Iran the fungi cause hazelnut decline disease, Diaporthe amygdali, and Cytospora fuckelii as canker and Fusarium semitectum, F. lateritium, F. anthophilum and Armillaria mellea as root rot causative agents. This article describes symptoms of hazelnut decline in Iran, pathogenic fungi and management strategies.

Dynamics of emergence and spread of citrus huanglongbing disease in Iran
Dr. Ali Alizadeh Aliabadi, Dr. Mohammad Mehdi Faghihi, Dr. Mohammad Salehi, Mr. Abolghasem Ghasemi,
Volume 11, Issue 2 ((Spring and Summer) 2022)
Abstract
Alizadeh Aliabadi A, Faghihi MM, Salehi M, Ghasemi A (2022) Dynamics of emergence and spread of citrus huanglongbing disease in Iran. Plant Pathology Science 11(2):11-21.  Doi: 10.2982/PPS.11.2.11

Introduction: Huanglongbing or Fruit Greening is one of the major citrus diseases in Iran that has spread to most of the country's citrus growing provinces. In this study, the prevalence trend of the disease in seven provinces was investigated and analyzed. Materials and Methods: Citrus orchards in Sistan-Balochestan, Hormozgan, Bushehr, Khuzestan, Fars, Kerman and Mazandaran provinces were visited and samples suspected of having this disease were collected, in 2007-2009 and 2017-2019 years. After DNA extraction from the samples, the PCR test was performed using the specific primers OI1/OI2c and A2/J5. Results: It was found that the percentage of infected specimens, infected areas and number of hosts of Candidatus Liberibacter asiaticus, the causative agent of this disease, has increased over this period. At the end of this period, some samples of oranges, tangerines, grapefruits, bitter oranges, Lisbon lemons and Mexican limes were obtained from the provinces: Kerman, Hormozgan, Sistan-Baluchestan, and Fars were infected with the disease. Conclusion: The study of the disease during these years showed that: the infected areas and the host range of the disease have expanded a lot during this period, and the spread of the disease in citrus cultivation areas in the south of the country has been with a gentle slope. The reduction of the disease-carrying psyllium population during these years seems to have been effective in slowing down the spread of the disease.



 
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