New Insights in Membrane Lipid Asymmetry in Animal and Plant Cells

Zachowski, Alain

doi:10.1002/9781118120118.ch3

Transmembrane Dynamics of Lipids 2011

DOI: 10.1002/9781118120118.ch3

|View full text |Cite

New Insights in Membrane Lipid Asymmetry in Animal and Plant Cells

Alain Zachowski

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2014

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because this is a review focused on plant cells, lipid trafficking between organelles largely similar to those found in animal cells will not be covered. This includes trafficking to the plasma membrane, mitochondria and peroxisome, but the reader may be referred to recent reviews on these topics . There are several possible modes of lipid movement within cells, which will be mentioned throughout such as vesicular movement, transport by soluble proteins, flipping across bilayer membranes and movement at membrane contact sites.…”

mentioning

confidence: 99%

Lipid Trafficking in Plant Cells

Hurlock

Roston

Wang

et al. 2014

Traffic

119

106

View full text Add to dashboard Cite

Plant cells contain unique organelles such as chloroplasts with an extensive photosynthetic membrane. In addition, specialized epidermal cells produce an extracellular cuticle composed primarily of lipids, and storage cells accumulate large amounts of storage lipids. As lipid assembly is associated only with discrete membranes or organelles, there is a need for extensive lipid trafficking within plant cells, more so in specialized cells and sometimes also in response to changing environmental condi- Plant cells have many membranes that are generally comparable to those in animal cells including the plasma, mitochondrial, nuclear and peroxisomal membranes. In addition, plant cells contain unique membrane-bound compartments such as the chloroplast, vacuole and symbiosome (1) and have other unique cellular structures composed of lipids, e.g. the cuticle of epidermal cells. As the key photosynthetic organelle in plants, one focus of plant lipid research has been on the chloroplast. It is surrounded by the outer and the inner envelope membranes and encompasses one of the most extensive membrane systems found in nature, the photosynthetic membrane organized into thylakoids. This membrane is unique in its lipid composition with the two galactolipids, monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG), being predominant (2,3). Unlike animal cells that synthesize fatty acids (FAs) in the cytoplasm and assemble glycerolipids primarily in the endoplasmic reticulum (ER), Golgi apparatus and mitochondria (4), plant cells synthesize FAs in the stroma of the chloroplast and assemble glycerolipids mainly by two pathways, the prokaryotic/plastid pathway in the chloroplast envelope membranes and the eukaryotic pathway in the ER (5), aside from lipid assembly or modification in mitochondria and Golgi. It should be noted that while lipid metabolism occurs in plastids other than chloroplasts, for example, chromoplasts in fruits and flowers or leucoplasts in storage tissues, most research on lipid trafficking has focused on chloroplasts. The origin of specific glycerolipids from either the ER or the chloroplast pathways in plants can be determined owing to the specificity of the respective acyltransferases (6,7). The ER-localized acyltransferase preferentially transfers 18 carbon FAs to the sn-2 (carbon 2) position of the glycerol backbone, whereas the chloroplast-localized acyltransferase preferentially transfers 16 carbon FAs to the sn-2 position of the glycerol backbone (6,7). Because of this difference in enzyme specificity, it has been well established that plants use both chloroplast-and ER-derived lipids as precursors in the assembly of chloroplast-specific galactolipids (7-9).www.traffic.dk 915

show abstract

mentioning

confidence: 99%

Lipid Trafficking in Plant Cells

Hurlock

Roston

Wang

et al. 2014

Traffic

119

106

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

New Insights in Membrane Lipid Asymmetry in Animal and Plant Cells

Cited by 1 publication

References 72 publications

Lipid Trafficking in Plant Cells

Lipid Trafficking in Plant Cells

Contact Info

Product

Resources

About