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한국식물학회 / v.31, no.3, 1988년, pp.197-203 
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시금치 잎의 엽영에 따라 분리한 Peroxisome에서의$CO_2$방출
( $CO_2$ Evolution in Peroxisomes Isolated from Spinach Leaves at Various Ages ) |
| 이순희; 연세대학교 이과대학 생물학과;
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| The rates of photorespiration and total CO2 fixation depending on leaf ages of spinach (Spinacia oleracea L.) were investigated. Metabolic rates of glycolate and glyoxylate in isolated peroxisomes were also measured. The rate of photorespiration and total CO2 fixation ability increased with the maturing of leaf, but decreased with senescence. Activities of enzymes involved in the peroxisomal photorespiratory pathway such as catalase, glycolate oxidase, NADH-glyoxylate reductase and glutamate-glyoxylate transaminase were highest in the mature leaf, but also decreased with aging of leaf. Glutamate-glyxolate transaminase activity significantly decreased with senescence, especially. the metabolic rate of glycolate was observed to be lower than that of glyoxylate in isolated peroxisomes. Glycolate seemed to be metabolized mainly to glycine, however, it also oxidized to CO2 when glycolate was supplied as a substrate for glycine synthesis instead of glyoxylate. The conversion rates of glycolate and glyxylate into CO2 increased with the senescence of leaves. |
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Journal of Plant Biology / v.31, no.3, 1988년, pp.197-203
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198811920114597)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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