A transcriptional response to singlet oxygen, a toxic byproduct of photosynthesis
نویسندگان
چکیده
منابع مشابه
A transcriptional response to singlet oxygen, a toxic byproduct of photosynthesis.
The ability of phototrophs to convert light into biological energy is critical for life on Earth. However, there can be deleterious consequences associated with this bioenergetic conversion, including the production of toxic byproducts. For example, singlet oxygen (1O2) can be formed during photosynthesis by energy transfer from excited triplet-state chlorophyll pigments to O2. By monitoring ge...
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UNLABELLED Singlet oxygen ((1)O(2)) is a reactive oxygen species generated by energy transfer from one or more excited donors to molecular oxygen. Many biomolecules are prone to oxidation by (1)O(2), and cells have evolved systems to protect themselves from damage caused by this compound. One way that the photosynthetic bacterium Rhodobacter sphaeroides protects itself from (1)O(2) is by induci...
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A photosynthetic organism is subjected to photo-oxidative stress when more light energy is absorbed than is used in photosynthesis. In the light, highly reactive singlet oxygen can be produced via triplet chlorophyll formation in the reaction centre of photosystem II and in the antenna system. In the antenna, triplet chlorophyll is produced directly by excited singlet chlorophyll, while in the ...
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15 صفحه اولA Mems Singlet Oxygen Generator
The design, creation, and demonstration of a singlet oxygen generator (SOG) that operates on the microscale are presented. The micro singlet oxygen generator (μSOG) chip creates singlet delta oxygen (O2(Δ)) in an array of packed bed reaction channels fed by inlets with pressure drop channels to equalize flow. An integrated capillary array separates the liquid and gas byproducts, and microscale ...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2005
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0502225102