A highly contiguous genome assembly of Brassica nigra (BB) and revised nomenclature for the pseudochromosomes.

ABSTRACT:

Background

Brassica nigra (BB), also called black mustard, is grown as a condiment crop in India. B. nigra represents the B genome of U's triangle and is one of the progenitor species of B. juncea (AABB), an important oilseed crop of the Indian subcontinent. We report the genome assembly of B. nigra variety Sangam.

Results

The genome assembly was carried out using Oxford Nanopore long-read sequencing and optical mapping. A total of 1549 contigs were assembled, which covered ~ 515.4 Mb of the estimated ~ 522 Mb of the genome. The final assembly consisted of 15 scaffolds that were assigned to eight pseudochromosomes using a high-density genetic map of B. nigra. Around 246 Mb of the genome consisted of the repeat elements; LTR/Gypsy types of retrotransposons being the most pred

SUBMITTER: Paritosh K 

PROVIDER: S-EPMC7731534 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature