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초록· 키워드
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The differences of several kinds of physiological responses between Commelina communis
(C3 plant) and Sedum sarmentosum (CAM plant: Crassulacean Acid metabolism) when both
plants were exposed to water stress for 3 weeks were investigated. In case of Commelina it was
shown a clear loss of water to 12% in three weeks, but no changes were observed in Sedum. Total chlorophyll
content was also reduced to 57% in Commelina but not clear changes of chlorophyll content
in Sedum. were observed for three weeks. In chlorophyll fluorescence experiments Fv/Fm
ratios were reduced to 19% in Commelina, but no changes were observed in Sedum. There were very
sensitive responses according to the different KCl concentrations and the stomatal aperture of
epidermal strips was 12.8 μm at 200 mM KCl in Commelina, but less than 3 μm was observed at
the same KCl concentration in Sedum. In addition, there were no chloroplasts in guard cells of
Sedum, but most plants had chloroplasts including Commelina. From the above results, the ability
of water stress resistance in Sedum. could be come from slow physiological metabolism including
growth and less loss of water through unique stomatal characteristics.
목차
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참고문헌 (26)
참고문헌 신청
Adams WW / 1987 / Responses of two CAM species to different irradiances during growth and susceptibility to photoinhibition by high light / Plant Physiol 83 : 213 ~ 218
Carnal NW / 1987 / Soluble sugars as the carbohydrate reserve for CAM in pineapple leaves: Implications for the role of pyrophosphate 6-Phosphofructokinase in glycolysis / Pl
Cote FX / 1989 / CO2 and O2 exchanges in the CAM plant Ananas comosus (L.) merr: Determination of total and malate-decorbocylation- dependent CO2-assimilation rates; study of
Demming B / 1987 / Comparison of the effect of excessive high of chlorophyll fluorescence (77k) and photon yield of O2 evolution in leaves of higher plants / Planta 171 : 171
Edwards GE / 1983 / C3, C4: Mechanisms and cellular and Environmental Regulation of Photosynthesis / University of California Press : 653 ~
Carnal NW / 1987 / Soluble sugars as the carbohydrate reserve for CAM in pineapple leaves: Implications for the role of pyrophosphate 6-Phosphofructokinase in glycolysis / Pl
Cote FX / 1989 / CO2 and O2 exchanges in the CAM plant Ananas comosus (L.) merr: Determination of total and malate-decorbocylation- dependent CO2-assimilation rates; study of
Demming B / 1987 / Comparison of the effect of excessive high of chlorophyll fluorescence (77k) and photon yield of O2 evolution in leaves of higher plants / Planta 171 : 171
Edwards GE / 1983 / C3, C4: Mechanisms and cellular and Environmental Regulation of Photosynthesis / University of California Press : 653 ~
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