The melatonin receptor CAND2 is involved in the regulation of photosynthesis and chloroplast gene expression in Arabidopsis thaliana under photooxidative stressстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 26 января 2022 г.
Аннотация: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 activityand 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 hormonelike signaling molecule via the CAND2/PMTR1-mediated signaling pathway