Genetic Diversity of Lactococcus garvieae Isolated from Diseased Rainbow Trout (Oncorhynchus mykiss) in Iran by RAPD-PCR

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Salighehzadeh Reza; AKHLAGHI MOSTAFA; SHARIFIYAZDI HASSAN; SOLTANIAN SIYAVASH

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Journal: Journal of Fisheries Year:2018 | Volume:71 | Issue:1 Page(s): 62-71

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Title

Genetic Diversity of Lactococcus garvieae Isolated from Diseased Rainbow Trout (Oncorhynchus mykiss) in Iran by RAPD-PCR

Author(s)

Salighehzadeh Reza | AKHLAGHI MOSTAFA | SHARIFIYAZDI HASSAN | SOLTANIAN SIYAVASH | Issue Writer Certificate

Keywords

Lactococcus garvieaeQ1

LactococcosisQ1

rainbow troutQ2

IranQ2

Genetic diversityQ2

Abstract

Lactococcus garvieae is one of the main causative agents of streptococcusis/Lactococcosis in farmed fish particularly in rainbow trout causing remarkable losses each year. Genotyping of 20 isolates of Lactococcus garvieae strains recovered from the mortality of farmed rainbow trout in different provinces of Iran was performed using RAPD-PCR method. The gram-positive cocci were first obtained from the kidney tissues of diseased trout. The bacterial isolates were grown on brain heart agar (BHI) and were then identified by a specific PCR method. The recovered gram-positive cocci strains were identified as L. garvieae by producing a 1100bp PCR product Then bacterial genotyping were processed with RAPD-PCR using two distinct random primers: P5 and M13. The RAPD-PCR results showed that primer P5 was able to produce maximum of 3 bands and 4 banding patterns, but primer M13 produced maximum of 7 bands and 5 banding patterns. Accordingly, the phylogenetic tree of the RAPD-PCR product using UPMGA software and using the primer P5 included these strains in 2 major clusters and 4 genetic groups, but using the primer M13 included these strains into 2 major clusters and 5 genetic groups. The results of this study indicate that although there are some phenotypic similarities between isolates of L. garvieae in different regions of Iran, these isolates have noticeable genetic differences. Further studies are need to clarify whether such Genetic diversity of the isolates are important for bacterial severity and prophylactic vaccination.

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APA: Copy

Salighehzadeh, Reza, AKHLAGHI, MOSTAFA, SHARIFIYAZDI, HASSAN, & SOLTANIAN, SIYAVASH. (2018). Genetic Diversity of Lactococcus garvieae Isolated from Diseased Rainbow Trout (Oncorhynchus mykiss) in Iran by RAPD-PCR. JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES), 71(1 ), 62-71. SID. https://sid.ir/paper/162240/en

Vancouver: Copy

Salighehzadeh Reza, AKHLAGHI MOSTAFA, SHARIFIYAZDI HASSAN, SOLTANIAN SIYAVASH. Genetic Diversity of Lactococcus garvieae Isolated from Diseased Rainbow Trout (Oncorhynchus mykiss) in Iran by RAPD-PCR. JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2018;71(1 ):62-71. Available from: https://sid.ir/paper/162240/en

IEEE: Copy

Reza Salighehzadeh, MOSTAFA AKHLAGHI, HASSAN SHARIFIYAZDI, and SIYAVASH SOLTANIAN, “Genetic Diversity of Lactococcus garvieae Isolated from Diseased Rainbow Trout (Oncorhynchus mykiss) in Iran by RAPD-PCR,” JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 71, no. 1 , pp. 62–71, 2018, [Online]. Available: https://sid.ir/paper/162240/en

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