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Genetic variation and phylogenetic analysis of Indonesian indigenous catfish based on mitochondrial cytochrome oxidase subunit III gene.

ABSTRACT:

Aim

This study aimed to analyze the genetic variation and phylogenetic reconstruction of Indonesian indigenous catfish using mitochondrial cytochrome oxidase subunit III sequences.

Materials and methods

A total of 19 samples of catfish were collected from seven rivers (Elo [EM], Progo [PM], Kampar [KR], Musi [MP], Mahakam [MS], Kapuas [KS], and Bengawan Solo [BSBJ]) in five different geographical locations in Indonesia. The genome was isolated from the tissue. Mitochondrial DNA cytochrome oxidase subunit III was amplified using polymerase chain reaction (PCR) with CO3F and CO3R primers. The PCR products were sequenced and continued to analyze genetic variation and phylogenetic relationship using MEGA version 7.0 software.

Results

Cytochrome c oxidase (COX)-III gene sequencing obtained 784 nucleotides encoding 261 amino acids. Sequenced COX-III gene fragments were aligned along with other catfish from Genbank using ClustalW program and genetic diversity among species was analyzed using the MEGA Version 7.0 software. Among all samples, there were substitution mutations at 78 nucleotide sites, and there were 14 variations in amino acids. Catfish from PM, KR, MP, and KS had the same amino acids as Hemibagrus nemurus (KJ573466.1), while EM catfish had eight different amino acids and catfishBSBJhad 12 different amino acids.

Conclusion

Indonesian catfish divided into four clades. BBSJ Catfish were grouped with Pangasianodon gigas, EM catfish were grouped with Mystus rhegma, and KS catfish were grouped with Hemibagrus spilopterus, while catfish MS, KR, PM, andMP were grouped with H. nemurus.

SUBMITTER: Widayanti R

PROVIDER: S-EPMC6661475 | biostudies-literature |

REPOSITORIES: biostudies-literature

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