A gapless genome assembly of a <i>Japonica</i> variety 'BD8' provides insights into rice salt tolerance.

ABSTRACT:

Background

Accurate genomic information in specific rice varieties is essential for functional gene mining and advancing molecular breeding. Bindao8 (BD8) is an elite Japonica rice variety with notable salt tolerance.

Results

This study presents a near telomere-to-telomere (T2T) genome assembly of 'BD8', with a size of 384.2 Mb and contig N50 of 31.69 Mb. A total of 58,685 genes were identified, 95.93% (56,297) of which were functionally annotated. Phylogenetic analysis clarified the genetic background of this cultivar. Abundant structural variations were detected, and enrichment analysis of unique genes identified four enriched KEGG pathways, including amino sugar and nucleotide sugar metabolism (ko00520), which supplies UDP-glucose/UDP-glucuronate for cell-wall biosynthesi

SUBMITTER: Geng L 

PROVIDER: S-EPMC12741066 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature