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한국식물학회 / v.31, no.3, 1988년, pp.227-237 
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광조건에서 Putrescine이 잘라낸 배추잎의 노쇠과정에 미치는 효과
( Effects of Putrescine on Senescence in Detached Leaves of Chinese Cabbage in the Light ) |
| 조형택; 서울대학교 자연과학대학 식물학과;
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| 초 록 |
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| Effects of putrescine on senescence in detached leaves of Chinese cabbage (Brassica campestris L.) in the light were investigated. The putrescine as a potent antisenescence substane markedly inhibited chlorophyll and protein loss at the 10mM concentraton in the detached leaves during the dark incubation. In the light, however, putrescine showed the opposite effects to dark incubation. The chlorphyll loss by putrescine in the light was stopped with darktransfer, and inhibited competitively by a divalent cation Ca2+. In the light, putrescine reduced the protease activity. Putrescine, in the light, increased H2O2 content and reduced the activities of enzymes -superoxide dismutase (EC 1.15.1.1), peroxidase (EC 1.11.1.7), catalase (EC 1.11.1.6-involved in inhibiting the accumulation of free radicals. These results suggest that the effects of puterscine on chlorophyll and protein loss in detached leaves of Chinese cabbage in the light are related to the cationic nature of putrescine and the accumulation of free radicals. |
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| 키워드 |
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Journal of Plant Biology / v.31, no.3, 1988년, pp.227-237
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198811920114630)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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