The Brassica napus fatty acid exporter FAX1-1 contributes to biological yield, seed oil content, and oil quality.

ABSTRACT:

Background

In the oilseed crop Brassica napus (rapeseed), various metabolic processes influence seed oil content, oil quality, and biological yield. However, the role of plastid membrane proteins in these traits has not been explored.

Results

Our genome-wide association study (GWAS) of 520 B. napus accessions identified the chloroplast membrane protein-localized FATTY ACID EXPORTER 1-1 (FAX1-1) as a candidate associated with biological yield. Seed transcript levels of BnaFAX1-1 were higher in a cultivar with high seed oil content relative to a low-oil cultivar. BnaFAX1-1 was localized to the plastid envelope. When expressed in Arabidopsis thaliana, BnaFAX1-1 enhanced biological yield (total plant dry matter), seed yield and seed oil content per plant. Likewise, in the field,

SUBMITTER: Xiao Z 

PROVIDER: S-EPMC8482660 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature