Ethylene Signaling Negatively Regulates Freezing Tolerance by Repressing Expression of CBF and Type-A ARR Genes in Arabidopsis
China Agricultural University · Peking University · +1 more institution
Abstract
The phytohormone ethylene regulates multiple aspects of plant growth and development and responses to environmental stress. However, the exact role of ethylene in freezing stress remains unclear. Here, we report that ethylene negatively regulates plant responses to freezing stress in Arabidopsis thaliana. Freezing tolerance was decreased in ethylene overproducer1 and by the application of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid but increased by the addition of the ethylene biosynthesis inhibitor aminoethoxyvinyl glycine or the perception antagonist Ag+. Furthermore, ethylene-insensitive mutants, including etr1-1, ein4-1, ein2-5, ein3-1, and ein3 eil1, displayed enhanced freezing tolerance.…
Citation impact
- FWCI
- 35.55
- Percentile
- 100%
- References
- 82
Authors
7Topics & keywords
- Ethylene
- Arabidopsis
- Biology
- Arabidopsis thaliana
- Mutant
- Cell biology
- Wild type
- Biochemistry
- Life in Land