Ethylene levels are regulated by a plant encoded 1-aminocyclopropane-1-carboxylic acid deaminase
| Autor: | Jonathan M. Plett, Jasper Dugardeyn, Björn Sundberg, Sara Andersson-Gunnerås, Dominique Van Der Straeten, Bernard R. Glick, Sharon Regan, Christopher Kozela, Lisa McDonnell |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Regulation of gene expression
Ethylene biology Physiology fungi food and beverages Plant physiology Cell Biology Plant Science General Medicine biology.organism_classification chemistry.chemical_compound chemistry Biochemistry Gene expression Genetics Arabidopsis thaliana 1-Aminocyclopropane-1-carboxylic acid Plant hormone Gene |
| Zdroj: | Physiologia Plantarum. 136:94-109 |
| ISSN: | 1399-3054 0031-9317 |
| DOI: | 10.1111/j.1399-3054.2009.01208.x |
| Popis: | Control of the levels of the plant hormone ethylene is crucial in the regulation of many developmental processes and stress responses. Ethylene production can be controlled by altering endogenous levels of 1-aminocyclopropane-1-carboxylic acid (ACC), the immediate precursor to ethylene or by altering its conversion to ethylene. ACC is known to be irreversibly broken down by bacterial or fungal ACC deaminases (ACDs). Sequence analysis revealed two putative ACD genes encoded for in the genome of Arabidopsis thaliana (A. thaliana) and we detected ACD activity in plant extracts. Expression of one of these A. thaliana genes (AtACD1) in bacteria indicated that it had ACD activity. Moreover, transgenic plants harboring antisense constructs of the gene decreased ACD activity to 70% of wild-type (WT) levels, displayed an increased sensitivity to ACC and produced significantly more ethylene. Taken together, these results show that AtACD1 can act as a regulator of ACC levels in A. thaliana. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text