Abstract
Ethylene/oxygen (E/O2) elevates sesquiterpenoid stress metabolite (SSM) levels in potato (Solanum tuberosum L.) tuber tissue which is reacting hypersensitively. To determine whether E/O2 retards SSM turnover, a measured amount of rishitin was applied to tuber tissue which was then incubated in air or E/O2, and rishitin disappearance was monitored. No difference in the rate of rishitin disappearance was detected between air and E/O2 incubations. However, tissue treated with rishitin and incubated in E/O2 accumulated intermediates of the katahdinone and phytuberin pathways. This was not the case in rishitin-air treatments. These results suggest the dual involvement of ethylene and SSM intermediates in the regulation of the biosynthesis of SSM, compounds which may serve as phytoalexins.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Alves L. M., Heisler E. G., Kissinger J. C., Patterson J. M., Kalan E. B. Effects of Controlled Atmospheres on Production of Sesquiterpenoid Stress Metabolites by White Potato Tuber: Possible Involvement of Cyanide-resistant Respiration. Plant Physiol. 1979 Feb;63(2):359–362. doi: 10.1104/pp.63.2.359. [DOI] [PMC free article] [PubMed] [Google Scholar]