长药景天CAM的快速诱导

RAPID INDUCTION OF CAM IN SUDUM SPECTABILE

Sudum spectabile is a facultative CAM plant. Watered plants carryout the metabolism of C_3 type in Summer. But the photosynthetic typecould be turned into CAM type within 6 hours when leaves were treatedwith ABA (3 mmol/1 aqueous solution) or detached in high summer.CO_2 uptake and low stomatal resistance were found during the night.And the CO_2 release and stomatal resistance increase occured during theday time. But the activity of PEP Carboxylase have no marked variation.There is only one band in the disc gel electrophoresis of PEP Carboxylase.