Related Experiment Video
Updated: Dec 9, 2025

Scalable, Flexible, and Cost-Effective Seedling Grafting
Published on: January 6, 2023
Activation of ACS7 in Arabidopsis affects vascular development and demonstrates a link between ethylene synthesis and
Shuo Yang1,2, Sining Wang1, Shujia Li3
1Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT, USA.
Abstract:
Ethylene is a gaseous hormone that affects many processes of plant growth and development. During vascular development, ethylene positively regulates cambial cell division in parallel with tracheary element differentiation inhibitory factor (TDIF) peptide signaling. In this study, we identified an ethylene overproducing mutant, acs7-d, exhibiting enhanced cambial activity and reduced wall development in fiber cells. Using genetic analysis, we found that ethylene signaling is necessary for the phenotypes of enhanced cambial cell division as well as defects in stem elongation and fiber cell wall development. Further, the cambial cell proliferation phenotype of acs7-d depends on WOX4, indicating that the two parallel pathways, ethylene and TDIF signaling, converge at WOX4 in regulating cambium activity. Gene expression analysis showed that ethylene impedes fiber cell wall biosynthesis through a conserved hierarchical transcriptional regulation. These results advance our understanding of the molecular mechanisms of ethylene in regulating vascular meristem activity.
More Related Videos
Related Concept Videos
Cell Signaling in Plants
C4 Pathway and CAM
C4 Pathway
The C4 pathway is used by plants such as...
Adaptations that Reduce Water Loss
Role of Microtubules in Cell Wall Deposition
Regulation of Transpiration by Stomata
Cell Adhesion in Plants
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...

