First Report of Curtobacterium flaccumfaciens pv. flaccumfaciens Causing Cowpea Bacterial Wilt in Iran |
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Authors: | Ebrahim Osdaghi Babak Pakdaman Sardrood Majed Bavi Nima Akbari Oghaz Shabnam Kimiaei Saideh Hadian |
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Institution: | Department of Plant Protection, Faculty of Agriculture, Ramin Agricultural & Natural Resources University, Bavi, Khuzestan, Iran |
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Abstract: | During surveys in cowpea fields of Marand County, East Azerbaijan province, Iran, in the summer of 2013, a suspected bacterial disease was observed on cowpea leaves as tan spots and interveinal necrotic lesions surrounded by chlorotic margins. The disease was of high incidence where some fields had been fully destroyed and severity of the disease in some fields had reached up to 70%. Gram‐positive, yellow‐pigmented, coryneform bacteria were isolated from infected leaves. Pathogenicity of isolates was confirmed on 20‐day‐old cowpea (cv. Khoy) plants, and they were identified as Curtobacterium flaccumfaciens pv. flaccumfaciens based on biochemical test results confirmed using specific PCR primers. This is the first report of C. flaccumfaciens pv. flaccumfaciens, the causal agent of cowpea bacterial wilt in Iran. |
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Keywords: | bacterial wilt Iran legume tan spot
Vigna unguiculata
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