Elevated CO2alleviates high PAR and UV stress in the unicellular chlorophyte Dunaliella tertiolecta
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چکیده
منابع مشابه
Cell survival after UV radiation stress in the unicellular chlorophyte Dunaliella tertiolecta is mediated by DNA repair and MAPK phosphorylation
Ultraviolet radiation (UVR) induces damage in a variety of organisms, and cells may adapt by developing repair or tolerance mechanisms to counteract such damage; otherwise, the cellular fate is cell death. Here, the effect of UVR-induced cell damage and the associated signalling and repair mechanisms by which cells are able to survive was studied in Dunaliella tertiolecta. UVR did not cause cel...
متن کاملCell death in the unicellular chlorophyte Dunaliella tertiolecta. A hypothesis on the evolution of apoptosis in higher plants and metazoans.
Apoptosis is essential for normal growth and development of multicellular organisms, including metazoans and higher plants. Although cell death processes have been reported in unicellular organisms, key elements of apoptotic pathways have not been identified. Here, we show that when placed in darkness, the unicellular chlorophyte alga Dunaliella tertiolecta undergoes a form of cell death remini...
متن کاملPlastid regulation of Lhcb1 transcription in the chlorophyte alga Dunaliella tertiolecta.
We identify four novel DNA-binding complexes in the nuclear-encoded Lhcb1 promoter of the chlorophyte alga Dunaliella tertiolecta that are regulated by photosynthetic pathways in the plastid. The binding activities of three of the complexes were positively correlated with time-dependent changes in Lhcb1 transcript abundance, implicating their roles as transcriptional enhancers in a retrograde s...
متن کاملEffect of inhibitors of protein synthesis and DNA replication on the induction of proteolytic activities, caspase-like activities and cell death in the unicellular chlorophyte Dunaliella tertiolecta
When the chlorophyte alga Dunaliella tertiolecta is placed in darkness, a form of programmed cell death with many similarities to apoptosis (including the induction of caspase-like proteases) is induced. Many uncertainties about this process remain, two of which are whether it requires protein synthesis and whether there is potential viral involvement. In order to examine the relationship betwe...
متن کاملInhibition of Caspase-like Activities Prevents the Appearance of Reactive Oxygen Species and Dark-induced Apoptosis in the Unicellular Chlorophyte Dunaliella Tertiolecta(1).
When the chlorophyte alga Dunaliella tertiolecta Butcher is placed in darkness, a form of programmed cell death with many similarities to apoptosis is induced, including the induction of caspase-like proteases. Many uncertainties about the regulation and mediators that participate in the process remain. To examine the relationship between caspase-like activities and different apoptotic events (...
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ژورنال
عنوان ژورنال: Photochemical & Photobiological Sciences
سال: 2014
ISSN: 1474-905X,1474-9092
DOI: 10.1039/c4pp00044g