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한국식물학회 / v.38, no.4, 1995년, pp.343-348 
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( Impairment of Polar Auxin Trnaport by Protein Kinase Inhibitors in Etiolated Pea Seedlings ) |
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| 초 록 |
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| Treatment of Pisum sativum tissue with the protein kinase inhibitor staurosphorine resulted in impairment of 3H-indoleacetic acid transport in etiolated stem segments. The transport inhibitiion was accompanied by an increase in net uptake of labeled auxin in the tissue. The magnitude of auxin accumulation in tissue treated with the phytotropin N-1-naphthylphthalaic acid (NPA) which specifically blocks the efflux of auxin in the plasma membrane was reduced by the protein kinase inhibitor, suggesting that inhibition of protein phosphorylation could lead to hindrance of the auxin-exporting function of NPA receptors. The flavonoid genistein which is also known to inhibit protein kinase likewise reduced NPA-induced auxin accumulation. However, the flavonoid did not bring about auxin accumulation by itself, nor did it inhibit auxin transport. In view of the finding that the flavonoid also competes with NPA for a common binding site, a mechanism for the flavonoid effect on the NPA action will be proposed. |
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| 키워드 |
| staurosporine;genistein;NPA;auxin transport;pisum sativum; |
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Journal of Plant Biology / v.38, no.4, 1995년, pp.343-348
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199511920117468)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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