Plant Cell Growth and Cell Wall Enlargement
Journal Article
·
· Encyclopedia of Life Sciences (eLS) (Online)
- Pennsylvania State Univ., University Park, PA (United States); Northwestern University, Evanston, IL, United States
Irreversible cell enlargement begins with cell wall loosening which induces wall stress relaxation, leading to cell water uptake and cell enlargement. Growing cell walls consist of a cohesive network of cellulose microfibrils embedded in hydrophilic pectins and cellulose-binding hemicelluloses. Models of the growing cell wall are provisional hypotheses about how these wall polymers interact to make a strong yet extensible wall. Recent results clarify how wall strength, plasticity and elasticity depend mostly on the stretching, straightening and sliding of cellulose microfibril networks in the wall. Passive sliding of cellulose microfibrils is facilitated by nonenzymic proteins named expansins while various enzymes modify pectins and hemicelluloses, altering their interactions with each other and with cellulose. Growth cessation is correlated with reduced expression of genes that promote wall loosening as well as changes in the direction of cellulose deposition and the structure of matrix polysaccharides, leading to a less extensible cell wall.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States); Pennsylvania State University, University Park, PA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- FG02-84ER13179; SC0001090
- OSTI ID:
- 1865664
- Alternate ID(s):
- OSTI ID: 1915130
- Journal Information:
- Encyclopedia of Life Sciences (eLS) (Online), Journal Name: Encyclopedia of Life Sciences (eLS) (Online) Journal Issue: 11 Vol. 2; ISSN 1476-9506
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nanoscale structure, mechanics and growth of epidermal cell walls
Structure and growth of plant cell walls
Journal Article
·
Tue Aug 21 20:00:00 EDT 2018
· Current Opinion in Plant Biology
·
OSTI ID:1566470
Structure and growth of plant cell walls
Journal Article
·
Thu Dec 14 19:00:00 EST 2023
· Nature Reviews Molecular Cell Biology
·
OSTI ID:2352283