4.4 Article

Glycerolipid profile differences between perennial and annual stem zones in the perennial model plant Arabis alpina

Journal

PLANT DIRECT
Volume 5, Issue 1, Pages -

Publisher

JOHN WILEY & SONS LTD
DOI: 10.1002/pld3.302

Keywords

fatty acid; glycerolipid; lipid; perennial; secondary growth; triacylglycerol

Categories

Funding

  1. Deutsche Forschungsgemeinschaft

Ask authors/readers for more resources

The perennial plant Arabis alpina has distinct patterns of nutrient allocation and metabolism compared to annual plants. Research indicates that genes related to glycerolipid metabolism are active during the development of the perennial zone (PZ), suggesting they may play a key role in regulating this process.
The perennial life style is a successful ecological strategy, and Arabis alpina is a recently developed model Brassicaceae species for studying it. One aspect, poorly investigated until today, concerns the differing patterns of allocation, storage, and metabolism of nutrients between perennials and annuals and the yet unknown signals that regulate this process. A. alpina has a complex lateral stem architecture with a proximal vegetative perennial (PZ) and a distal annual flowering zone (AZ) inside the same stems. Lipid bodies (LBs) with triacylglycerols (TAGs) accumulate in the PZ. To identify potential processes of lipid metabolism linked with the perennial lifestyle, we analyzed lipid species in the PZ versus AZ. Glycerolipid fractions, including neutral lipids with mainly TAGs, phospholipids, and glycolipids, were present at higher levels in the PZ as compared to AZ or roots. Concomitantly, contents of specific long-chain and very long-chain fatty acids increased during formation of the PZ. Corresponding gene expression data, gene ontology term enrichment, and correlation analysis with lipid species pinpoint glycerolipid-related genes to be active during the development of the PZ. Possibilities that lipid metabolism genes may be targets of regulatory mechanisms specifying PZ differentiation in A. alpina are discussed.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available