High-quality genome assembly of <i>Impatiens noli-tangere</i> reveals key insights into α-linolenic acid biosynthesis and metabolic volatiles.

ABSTRACT: Impatiens noli-tangere accumulates abundant α-linolenic acid (ALA) and its metabolic volatiles, which hold significant potential for applications in healthcare and agriculture. However, the genetic basis underlying their biosynthesis has not been systematically investigated. Here, we present a high-quality genome assembly for I. noli-tangere (614.46 Mb). Despite a high repetitive sequence content (70.46%), it avoided excessive expansion due to the efficient elimination of long terminal repeat retrotransposons. Phylogenomic analyses revealed that I. noli-tangere experienced two whole-genome duplication (WGD) events, with WGD-derived genes predominating in oil biosynthesis. Notably, IntFAD3, a WGD-duplicated fatty acid desaturase, was identified as a key seed-spec

SUBMITTER: Xu N 

PROVIDER: S-EPMC12598466 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature