Complete mitochondrial genome sequence of black mustard (Brassica nigra; BB) and comparison with Brassica oleracea (CC) and Brassica carinata (BBCC)

Genome Génome / Conseil National De Recherches Canada
Hiroshi YamagishiToru Terachi

Abstract

Crop species of Brassica (Brassicaceae) consist of three monogenomic species and three amphidiploid species resulting from interspecific hybridizations among them. Until now, mitochondrial genome sequences were available for only five of these species. We sequenced the mitochondrial genome of the sixth species, Brassica nigra (nuclear genome constitution BB), and compared it with those of Brassica oleracea (CC) and Brassica carinata (BBCC). The genome was assembled into a 232 145 bp circular sequence that is slightly larger than that of B. oleracea (219 952 bp). The genome of B. nigra contained 33 protein-coding genes, 3 rRNA genes, and 17 tRNA genes. The cox2-2 gene present in B. oleracea was absent in B. nigra. Although the nucleotide sequences of 52 genes were identical between B. nigra and B. carinata, the second exon of rps3 showed differences including an insertion/deletion (indel) and nucleotide substitutions. A PCR test to detect the indel revealed intraspecific variation in rps3, and in one line of B. nigra it amplified a DNA fragment of the size expected for B. carinata. In addition, the B. carinata lines tested here produced DNA fragments of the size expected for B. nigra. The results indicate that at least two mitot...Continue Reading

References

Jan 1, 1987·Current Genetics·J D Palmer, L A Herbon
Oct 14, 2004·Bioinformatics·Paul Stothard, David S Wishart
Dec 31, 2005·Plant Physiology·Xiangjun TianJun Yu
Jul 1, 1991·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·S I Warwick, L D Black

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Citations

Apr 4, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Young-Min JeongJeong-Hwan Mun
Sep 8, 2016·Gene·Céline Van de PaerGuillaume Besnard
Mar 9, 2021·Frontiers in Genetics·Nur Shuhadah Mohd SaadJacqueline Batley

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