The melatonin receptor CAND2 is involved in the regulation of photosynthesis and chloroplast gene expression in Arabidopsis thaliana under photooxidative stress
| Autor: | I.A. BYCHKOV, N.V. KUDRYAKOVA, E.S. POJIDAEVA, V.V. KUSNETSOV |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Photosynthetica, Vol 59, Iss 4, Pp 683-692 (2021) |
| Druh dokumentu: | article |
| ISSN: | 0300-3604 1573-9058 |
| DOI: | 10.32615/ps.2021.061 |
| Popis: | Melatonin is a well-known bioactive molecule able to mitigate photooxidative damage caused by excess light. Here we have shown that mutant Arabidopsis lines with disrupted genes for melatonin putative receptor CAND2/PMTR1 and GPA1 encoding the α-subunit of heterotrimeric G-protein were partially insensitive to melatonin treatment under high light stress. They exhibited a higher degree of photodamage due to a significantly decreased photosynthetic activity and diminished expression of chloroplast and nuclear-encoded genes and the corresponding proteins. A possible mechanism for melatonin-dependent regulation of chloroplast genes is associated with a change in the activity of the genes for chloroplast RNA polymerases. We conclude that under high light stress, melatonin may act as a hormone-like signaling molecule via the CAND2/PMTR1-mediated signaling pathway. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|