DISTRIBUTION AND IDENTIFICATION OF STREPTOMYCES SPECIES, THE CAUSAL AGENT OF POTATO COMMON SCABIN FARS PROVINCE

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TAGHAVI S.M.; FAGHIHI S.M.

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Journal: IRANIAN JOURNAL OF PLANT PATHOLOGY Year:2006 | Volume:42 | Issue:1 Page(s): 85-116

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Title

DISTRIBUTION AND IDENTIFICATION OF STREPTOMYCES SPECIES, THE CAUSAL AGENT OF POTATO COMMON SCABIN FARS PROVINCE

Author(s)

TAGHAVI S.M. | FAGHIHI S.M. | Issue Writer Certificate

Keywords

STREPTOMYCESQ2

COMMON SCABQ2

POTATOQ3

Abstract

During 2002- 2004 and early 2004 samples of POTATO tubers showing COMMON SCAB symptoms and the related soils were collected from fields at different area from Fars province. A total of70 STREPTOMYCES strains were isolated from POTATO scab lesions and soil. Strains were identified based on morphological, physiological and biochemical characteristics and were classified into six distinct groups. Thirty five representative strains were tested for pathogenicity on POTATO tubers and radish seedlings. Strains of group 1 were identical to the reference strain of S. scabies. Strains of group 2 were similar to S. scabies in respect to some morphological characteristics and differed in several biochemical characters. Most of the strains of group 3 were similar to S. acidiscabies and a small number of strains were similar to S. griseus in some morphological and biochemical characteristics. Characteristics of the strains of group 4 were similar to S. turgidiscabies, but differed in some physiological and biochemical characteristics. The morphological and physiological characteristics of the strains of group 5 that were isolated from superficial scab symptoms (russet and netted scab) were similar to S. aureofaciens and S. reticuliscabies and differed from those of described scab pathogens, such as S. scabies, S. turgidiscabies and S. acidiscabies Strains of group 6 in morphological and some biochemical characters were similar to S. acidiscabies, but differed in several biochemical tests. Also polymerase chain reaction (PCR) were used for detection of necl gene that is present in most pathogenic strains of S. scabies, S. acidiscabies and S. turgidiscabies. The predicted 700bp PCR products for the coding sequences of necl gene were obtained from reference strain of S. scabies (positive control) and some strains of group 1, 3, and 4 that were induced lesions of COMMON SCAB on POTATO tubers in greenhouse conditions. No PCR products were obtained from the non-pathogenic strains and pathogenic strains of group 2, 5, and 6. Therefore, necl gene was not found in non-pathogenic and some of pathogenic strains, but each of strains that had nee] gene, was shown to be pathogenic on POTATO tubers and radish seedlings. In electrophoresis patterns of the whole cell proteins differences and similarities were observed among strains of these six distinct groups which in some cases did not correspond with the phenotypic grouping.

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APA: Copy

TAGHAVI, S.M., & FAGHIHI, S.M.. (2006). DISTRIBUTION AND IDENTIFICATION OF STREPTOMYCES SPECIES, THE CAUSAL AGENT OF POTATO COMMON SCABIN FARS PROVINCE. IRANIAN JOURNAL OF PLANT PATHOLOGY, 42(1), 85-116. SID. https://sid.ir/paper/48406/en

Vancouver: Copy

TAGHAVI S.M., FAGHIHI S.M.. DISTRIBUTION AND IDENTIFICATION OF STREPTOMYCES SPECIES, THE CAUSAL AGENT OF POTATO COMMON SCABIN FARS PROVINCE. IRANIAN JOURNAL OF PLANT PATHOLOGY[Internet]. 2006;42(1):85-116. Available from: https://sid.ir/paper/48406/en

IEEE: Copy

S.M. TAGHAVI, and S.M. FAGHIHI, “DISTRIBUTION AND IDENTIFICATION OF STREPTOMYCES SPECIES, THE CAUSAL AGENT OF POTATO COMMON SCABIN FARS PROVINCE,” IRANIAN JOURNAL OF PLANT PATHOLOGY, vol. 42, no. 1, pp. 85–116, 2006, [Online]. Available: https://sid.ir/paper/48406/en

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