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한국식물학회 / v.48, no.2, 2005년, pp.170-177 
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( Effects of Benzyladenine and Abscisic Acid on the Disassembly Process of Photosystems in an Arabidopsis Delayed-Senescence Mutant, ore9 ) |
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| 초 록 |
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| Using wild-type (WT) leaves and those from an ore9 delayed-senescence Arabidopsis mutant, we investigated the delaying and accelerating effects of benzyladenine (BA) and abscisic acid (ABA), respectively, on the degradation process of the photosynthetic apparatus during dark-induced senescence (DIS). In the mutant, delays were seen for both the breakdown of chlorophyll (ChI) and the decrease in photochemical efficiency of photosystem II (Fv/Fm). Moreover, each step was prolonged in the disassembly process of the Chi-protein complexes. In the presence of HA, Chi degradation was retarded to a similar extent for both the mutant and the WT, but the decrease in Fv/Fm was not. However, in the presence of AHA, the two processes were accelerated in both genotypes. Therefore, although the ore9 mutation causes this functional delayed-senescence, it may not be related to the non-functional delay that happens afterwards. In contrast, HA seems to affect both processes. |
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| 키워드 |
| abscisic acid;Arabidopsis;benzyladenine;dark-induced senescence;photosynthesis;stay-green mutant; |
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Journal of Plant Biology / v.48, no.2, 2005년, pp.170-177
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504704007979)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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