English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

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,  B. napus BnaFAX1-1  overexpression lines ( BnaFAX1-1 -OE) displayed significantly enhanced biological yield, seed yield, and seed oil content compared with the wild type.  BnaFAX1-1  overexpression also up-regulated gibberellic acid 4 (GA4) biosynthesis, which may contribute to biological yield improvement. Furthermore, oleic acid (C18:1) significantly increased in  BnaFAX1-1  overexpression seeds.    Conclusion  Our results indicated that the putative fatty acid exporter  BnaFAX1-1  may simultaneously improve seed oil content, oil quality and biological yield in  B. napus , providing new approaches for future molecular breeding .Supplementary Information  The online version contains supplementary material available at 10.1186/s13068-021-02035-4.

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