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Çѱ¹½Ä¹°ÇÐȸ / v.35, no.1, 1992³â, pp.77-84
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( Effects of TPA and IAA on Corn Coleoptile Elongation ) |
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| ¿À¿Á½ÅÀÇ ÀÛ¿ëÀÌ PKC¿¡ ÀÇÇÑ ´Ü¹éÁúÀÇ ÀλêÈ °úÁ¤°ú ¿¬°üµÇ¾î ÀÖ´ÂÁö È®ÀÎÇϱâ À§ÇÏ¿© PKC¸¦ Ȱ¼ºÈ½ÃŰ´Â ¹°ÁúÀÎ DAG¿Í TPA ±×¸®°í ¿À¿Á½ÅÀÌ ¿Á¼ö¼ö ÀÚ¿±ÃÊÀÇ ½ÅÀå¿¡ ¹ÌÄ¡´Â È¿°ú¸¦ Á¶»çÇÏ¿´´Ù. DAG¿Í TPA¸¦ ¿Á¼ö¼ö ÀÚ¿±ÃÊ¿¡ ó¸®Çϸé DAG´Â ÃÖ´ë 500%±îÁö, TPA´Â ÃÖ´ë 300%±îÁö ÀÚ¿±ÃÊ »ýÀåÀ²À» Áõ°¡½ÃÄ×´Ù. À̶§ IAA³ª TPA °¢°¢¿¡ ÀÇÇÑ »ýÀåÀ² Áõ°¡ÀÇ ÇÕ(ÃÖ´ë 800%)º¸´Ùµµ TPA¿Í IAA¸¦ ÇÔ²² ó¸®ÇÑ Á¶Á÷ÀÇ »ýÀåÀ² Áõ°¡°¡ ´õ Ä¿¼(ÃÖ´ë 1200%) TPA¿Í IAA´Â »ó½ÂÈ¿°ú¸¦ ³ªÅ¸³»¾ú´Ù. Àü±â¿µµ¿À» ÅëÇÏ¿© TPA¿Í IAA¸¦ ó¸®ÇÑ ÀÚ¿±ÃÊ ¼¼Æ÷ÁúÀÇ ´Ü¹éÁú ÀλêÈ Á¤µµ¸¦ ºñ±³ÇÑ °á°ú TPA+IAA>IAA>TPA>controlÀÇ ¼ø¼´ë·Î ´Ü¹éÁúÀÇ ÀλêȰ¡ Áõ°¡Çß´Ù. ÀÌ·¯ÇÑ ´Ü¹éÁú ÀλêÈÀÇ Áõ°¡¿Í ½ÅÀå »ýÀå°úÀÇ °ü°è¸¦ ¸íÈ®È÷ Çϱâ À§ÇØ PKC ¾ïÁ¦Á¦·Î ¾Ë·ÁÁø STA¸¦ ÀÚ¿±ÃÊ¿¡ ó¸®ÇÑ °á°ú TPAÀÇ Á¸Àç¿¡ °ü°è¾øÀÌ »ýÀåÀ²ÀÌ 80%±îÁö ÀúÇØµÇ¾ú´Ù. ÀÌ¿Í °°Àº ½ÇÇè °á°úµéÀº IAA¿¡ ÀÇÇÑ ÀÚ¿±ÃÊ ½ÅÀå ÃËÁø °úÁ¤ÀÇ Àû¾îµµ ÇÑ ´Ü°è¿¡ µ¿¹°ÀÇ PKC¿Í À¯»çÇÒ °ÍÀ¸·Î ÃßÃøµÇ´Â PKC¿¡ ÀÇÇÑ ´Ü¹éÁú ÀλêȰ¡ ¿¬°üµÇ¾î ÀÖÀ» °¡´É¼ºÀÌ ÀÖ´Ù°í »ý°¢ÇÏ°Ô ÇÑ´Ù. |
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| In view of the well-established role of protein kinase C effector element in signal transduction of animal systems, the possibility of diacylglycerol (DAG) and its analog 12-O-tetradecanoylphorbol13-acetate (TPA) having an effect on auxin-induced growih of com coleoptiles was explored. Both DAG and TP A were found to promote cell elongation in the coleoptile tissue_ Treatment of tissue with these protein kinase C-activating agents resulted in increase in the growth rate over the control by about 300%. When 1M was applied to TPA-pretreated coleoptiles. auxin effect appeared synergistic. Morever. coleoptile growth was found to be inhibited by staurosporine and methylated TPA, both of which are known to specifically inhibit protein kinase C. Electrophoretic and autoradiographic patterns of soluble proteins from the coeoptiles indicated that either 1M or TPA tereatment resulted in increased phosphorylation of certain proteins of 205 Kd. 66 Kd and 32 Kd in size. The results obtained from the present work suggest that protein kinase C may be associated with auxin action on cell elongation in the corn coleoptile segments.gments. |
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Journal of Plant Biology / v.35, no.1, 1992³â, pp.77-84
Çѱ¹½Ä¹°ÇÐȸ
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199211920115941)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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