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한국식물학회 / v.51, no.1, 2008년, pp.48-51 
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( TobpreproHypSys-A Gene Expression and Defense Protein Activity in the Tobacco Wounding Response ) |
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| 초 록 |
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| Tobacco hydroxyproline-rich glycopeptide systemin precursor A (TobpreproHypSys-A), from which TobHypSys I and II are released, plays a crucial role in defense responses. Here, we investigated the expression of TobpreproHypSys-A and the activity of defense proteins in tobacco organs during wounding. Expression was induced more rapidly in upper, non-wounded leaves than in lower, wounded leaves. At 24 h after mechanical wounding, expression was low in the roots, but increased in the stems and flowers, although to a lesser extent than in the leaves. At 3 or 10 d after insect-wounding, expression did not differ among organs, suggesting that TobpreproHypSys-A could be induced globally and continuously throughout such stress. During that period, the activity of two defense proteins -- PPO and PI -- was consistent with the expression of TobpreproHypSys-A in various organs. This indicates that those proteins also could be regulated by TobHypSys, both globally and continuously. |
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| 키워드 |
| Nicotiana tabacum;polyphenol oxidase;proteinase inhibitor;systemin;wounding response; |
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Journal of Plant Biology / v.51, no.1, 2008년, pp.48-51
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200810737042358)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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