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The C3-CAM intermediate Clusia minor L. and the C3 obligate Clusia multiflora H.B.K. plants were exposed for 7 d to a combination of drought stress and high irradiance of about 1200 µmol m−2 s−1 for 12 h per day. In both species under these conditions a strong decrease in stomatal conductance was observed at dawn and dusk. Changes in stomatal behaviour of C. minor were accompanied by only a low nocturnal...
The C3-CAM intermediate plant Clusia fluminensis under well-watered at low light conditions opens stomata during the light period. In leaf extracts of this plant we have found two copper-zinc superoxide dismutases (CuZnSODs) and two manganese SODs: MnSOD-like protein (MnSOD II) and MnSOD I. Daily rhythm of the MnSOD I shows maximum activity during the afternoon hours and it is accompanied by only...
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