<P> However , because it absorbs electrons oxidized from water in PS II , the electron `` hole '' of PS I can not 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 . </P>
<P> However , because it absorbs electrons oxidized from water in PS II , the electron `` hole '' of PS I can not 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 . </P>
dcmu inhibits electron transport in chloroplast by preventing the reduction of
dcmu inhibits electron transport in chloroplast by preventing the reduction of
NADP to NADPH
NADP to NADPH