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Article

Functional divergence of plant expansins as revealed by genetic complementation of root-hair tip growth in Arabidopsis thaliana.

Proceedings of the National Academy of Sciences of the United States of America - 29 Sept 2026

Zhou Ke, Hepler Nathan K, Jia Moyan, Cosgrove Daniel J

Abstract excerpt

Plant cell wall expansion is essential for plant growth, with expansins promoting wall creep during diffuse growth. Expansin's role in tip growth, such as root hair elongation, is less clear. Here, we used CRISPR/Cas9 to knock out root hair-specific α-expansins EXPA7 and EXPA18 in Arabidopsis thaliana, which abolished root hair elongation. Complementation with expansin genes from various clades (driven by the...

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Topics

Arabidopsis
Plant Roots
Arabidopsis Proteins
Plant Proteins
Phylogeny
Genetic Complementation Test

Methodology Data sources Editorial policy Privacy Delete account & data About Contact Helena Bioinformatics

Cell Wall

Gene Expression Regulation, Plant

Mutation

CRISPR-Cas Systems

Source

Open in PubMed Open full text

Identifiers

PMID: 42776750
DOI: 10.1073/pnas.2623483123
PMCID: PMC13624612

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 22 Oct 2026.

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