Formula C9H10Cl2N2O Melting point 158 °C Boiling point 180 °C | Molar mass 233.1 g/mol Density 1.48 g/cm³ | |
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Appearance white crystalline solid | ||
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DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) is an algicide and herbicide of the phenylurea class that inhibits photosynthesis. It was introduced by Bayer in 1954 under the trade name of Diuron.
Contents
- Dcmu announcement new batman series minecraft superhero universe
- Batman v superman justice league darkseid teaser breakdown
- Mechanism of action
- References
Batman v superman justice league darkseid teaser breakdown
Mechanism of action
DCMU is a very specific and sensitive inhibitor of photosynthesis. It blocks the plastoquinone binding site of photosystem II, disallowing the electron flow from where it is generated, in photosystem II, to plastoquinone. This interrupts the photosynthetic electron transport chain in photosynthesis and thus reduces the ability of the plant to turn light energy into chemical energy (ATP and reductant potential).
DCMU only blocks electron flow from photosystem II, it has no effect on photosystem I or other reactions in photosynthesis, such as light absorption or carbon fixation in the Calvin cycle.
However, because it absorbs electrons oxidized from water in PS II, the electron "hole" of PS I cannot be satisfied, effectively shutting down "linear" photosynthesis by blocking the reduction of NADP+ to NADPH. At the same time, it was found that DCMU not only does not inhibit the cyclic photosynthetic pathway, but, under certain circumstances, actually stimulates it.
Because of these effects, DCMU is often used to study energy flow in photosynthesis.