Isolation and Characterization of Brenneria nigrifluens Causing Bacterial Shallow Bark Canker of Walnut Trees in Golestan Province, Iran
Publish place: Journal of Genetic Resources، Vol: 6، Issue: 2
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_SGR-6-2_006
تاریخ نمایه سازی: 6 اردیبهشت 1400
Abstract:
Shallow bark canker incited by Brenneria nigrifluens is considered one of the most dangerous diseases which can cause a significant reduction in walnut and timber production. During spring and summer of ۲۰۱۹, walnut gardens were surveyed for symptoms like leaf spot, fruit, and stem canker from four different regions of Golestan province located in Iran. A set of ۱۱ Gram-negative bacteria were isolated from sample tissues with symptoms. In pathogenicity tests on unripe walnut fruits, all isolates caused typical black necrotic lesions covering almost the entire pericarp. Results of selected phenotypic tests and whole-cell protein patterns indicated that all isolates were the same as described for the type strain of B. nigrifluens. Phylogenetic analysis based on sequencing of the gyrB, rec A, and ۱۶s rRNA genes of the representative isolate formed a unique clade, well-characterized, and separated from related species. The results of this study can have a bearing on the choice of disease management strategies.
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Authors
Mohammad Razinataj
Cotton Research Institute of Iran, Agricultural Research, Education and Extension Organization, Gorgan, Iran
Milad Aeini
Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Ali Khademlou
Ministry of Agriculture, Tehran, Iran
Kamal Sadeghi
Department of Plant Protection, Razavi Agro-Industrial Company, Mashhad, Iran.
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