Gene Details:
Functional Descriptions:
- Overexpression of two cambium-abundant Chinese fir (Cunninghamia lanceolata) α-expansin genes ClEXPA1 and ClEXPA2 affect growth and development in transgenic tobacco and increase the amount of cellulose in stem cell walls.
- Phylogenetic reconstruction indicated that they belong to α-expansin (EXPA), named ClEXPA1 and ClEXPA2. Expression pattern analysis demonstrated that they are preferentially expressed in the cambium region.
- Overexpression of ClEXPA1 and ClEXPA2 in tobacco plants yielded pleiotropic phenotypes of plant height, stem diameter, leaf number and seed pod.
- Isolated cell walls of ClEXPA1 and ClEXPA2 overexpressors contained 30%–50% higher cellulose contents than the wild type, accompanied by a thickening of the cell walls in the xylem region.
- Both ClEXPA1 and ClEXPA2 are involved in plant growth and development, with a partially functional overlap. Expansins are not only able to induce cell expansion in different tissues/organs in vivo, but they also can act as a potential activator during secondary wall formation by directly or indirectly affecting cellulose metabolism, probably in a cell type-dependent manner.
Function-related keywords:
- leaf , xylem , stem , growth , development , leaf-development , plant-development , seed , cell-wall , plant-growth , cellulose , height , plant-height , seed-development , cell-expansion , seed-growth , secondary-metabolism , secondary-cell-wall
Literature:
- Overexpression of two cambium-abundant Chinese fir (Cunninghamia lanceolata) α-expansin genes ClEXPA1 and ClEXPA2 affect growth and development in transgenic tobacco and increase the amount of cellulose in stem cell walls. DOI: 10.1111/j.1467-7652.2010.00569.x ; PMID: 20955182
Related News:
Gene Resources:
- NCBI ID: EF158813
- UniProt accessions:
Orthologs:
Sequences:
- CDS Sequence:
- Protein Sequence: