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한국식물학회 / v.44, no.1, 2001년, pp.7-11 
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( Fast Upward Propagation of the Wound Signal That Systemically Elevates Phosphatidic Acid ) |
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| 초 록 |
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| Phosphatidic acid (PA) increases in response to wounding at the neighboring unwounded leaf as well as at the wounded leaf of many plants (Lee et at.,1991). This indicates that a signal propagates from the wounded leaf to its neighboring leaves. In this paper we report the speed and direction of propagation for a systemic wound signal that elevates PA. When a leaf of a soybean (Glycine max) seedling at the 2-leaf-stage was wounded, the PA level of the neighboring leaf did not change within the first min, but did increase significantly in 2 min, returning to the control level after 15 min. This implies that the systemic wound signal was generated at least within 2 min of wounding, and was propagated at a speed of at least 10-16 mm/min. When we wounded individual leaves of soybean and tobacco (Nicotiana tabaccum) seedlings that had 3 or 4 leaves, PA levels were elevated only in the younger leaves located above the wounded leaf, but not in the older, lower leaves. Thus, the PA-elevating wound signal preferentially moves upward in these plants. |
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| 키워드 |
| Glycine max;Nicotiana tabaccum;phosphatidic acid;systemic wound signal propagation; |
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Journal of Plant Biology / v.44, no.1, 2001년, pp.7-11
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111921138603)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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