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Goudarzi, Azadeh, Kouchaki Hasankiadeh, Sadaf, Shabdar, Hananeh, Bagheri, Abdolnabi, Modarresi-Najafabadi, Seyed-Saeed. (1403). Paecilomyces maximus as the causal agent of canker disease on Eucalyptus camaldulensis in Hormozgan Province, Iran. , 1(2), 17-26. doi: 10.22103/japp.2024.24143.1014
Azadeh Goudarzi; Sadaf Kouchaki Hasankiadeh; Hananeh Shabdar; Abdolnabi Bagheri; Seyed-Saeed Modarresi-Najafabadi. "Paecilomyces maximus as the causal agent of canker disease on Eucalyptus camaldulensis in Hormozgan Province, Iran". , 1, 2, 1403, 17-26. doi: 10.22103/japp.2024.24143.1014
Goudarzi, Azadeh, Kouchaki Hasankiadeh, Sadaf, Shabdar, Hananeh, Bagheri, Abdolnabi, Modarresi-Najafabadi, Seyed-Saeed. (1403). 'Paecilomyces maximus as the causal agent of canker disease on Eucalyptus camaldulensis in Hormozgan Province, Iran', , 1(2), pp. 17-26. doi: 10.22103/japp.2024.24143.1014
Goudarzi, Azadeh, Kouchaki Hasankiadeh, Sadaf, Shabdar, Hananeh, Bagheri, Abdolnabi, Modarresi-Najafabadi, Seyed-Saeed. Paecilomyces maximus as the causal agent of canker disease on Eucalyptus camaldulensis in Hormozgan Province, Iran. , 1403; 1(2): 17-26. doi: 10.22103/japp.2024.24143.1014

Paecilomyces maximus as the causal agent of canker disease on Eucalyptus camaldulensis in Hormozgan Province, Iran

Journal of Advances in Plant Protection
دوره 1، شماره 2، اسفند 2024، صفحه 17-26    اصل مقاله (898.26 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22103/japp.2024.24143.1014
نویسندگان
Azadeh Goudarzi* 1؛ Sadaf Kouchaki Hasankiadeh2؛ Hananeh Shabdar2؛ Abdolnabi Bagheri3؛ Seyed-Saeed Modarresi-Najafabadi3
1Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, AREEO, Bandar Abbas, Iran
2Department of Agriculture, Minab Higher Education Center, University of Hormozgan, Bandar Abbas, Iran
3Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
چکیده
During a survey, a severe canker disease outbreak affecting Eucalyptus camaldulensis was found in various parts of Hormozgan Province, the south of Iran. The disease symptoms manifested through dark brown necrotic lesions, extensive cankers, longitudinal trunk cracks, wood discoloration, twig dieback, gummosis, and death. The disease incidence in the studied regions was 81%. This study aimed to characterize the disease, ascertain its etiological agent, and validate its pathogenicity using Koch’s postulates. Fungal isolations from symptomatic tissues yielded colonies consistent with a Paecilomyces sp., subsequently identified as P. maximus based on morphological traits and molecular analysis of the internal transcribed spacer nrDNA region and β-tubulin (tub2) gene. Pathogenicity tests demonstrated lesion development on healthy branches inoculated with mycelium plugs from P. maximus, confirming the association between the fungus and observed symptoms. Small brown lesions appeared on the inoculated branches during 15 to 18 days, proving that the fungus is the cause of the disease. P. maximus was only re-isolated from the inoculated symptomatic tissue. Notably, this study represents the first documentation of P. maximus causing canker disease on eucalyptus trees in Iran and globally.
کلیدواژه‌ها
Dieback؛ Eucalyptus؛ Paecilomyces canker؛ Southern Iran
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