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Çѱ¹½Ä¹°ÇÐȸ / v.35, no.4, 1992³â, pp.425-429
Ranunculus sceleratus ¿±º´ÀÇ ¿¡Æ¿·» ¸Å°³ »ýÀå¹ÝÀÀÁ¶Àý¿¡ À־ SpermineÀÇ °ü¿©
( Involvement of spermine in Control of Ethylene-Mediated Growth Response in Ranunculus sceleratus Petioles )
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Ranunculus sceleratus ¿±º´ÀÇ ¼¼Æ÷ ½ÅÀåÀº ¿¡Æ¿·»¿¡ ÀÇÇÏ¿© ÃËÁøµÇ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. ¿À¿Á½ÅÀ» ó¸®ÇÑ ¿±º´Á¶Á÷ ÀýÆí¿¡¼­ spermineÀº ¼¼Æ÷ ½ÅÀå°ú ¿¡Æ¿·»ÀÇ »ý¼ºÀ» ºñ½ÁÇÑ ¾ç»óÀ¸·Î ¾ïÁ¦ÇÏ¿´´Ù. Spermine ³óµµ¿¡ ´ëÇÑ ¿À¿Á½Å À¯µµ ¿¡Æ¿·» »ý¼º ¾ïÁ¦¹ÝÀÀÀº ACC¿¡ ÀÇÇÑ ¿¡Æ¿·» »ý¼ºÀÇ °æ¿ìµµ À¯»çÇÑ ¾ç»óÀ» ³ªÅ¸³»¾úÀ¸¸ç ÀÌ´Â Æú¸®¾Æ¹ÎÀÌ ACC°¡ ¿¡Æ¿·»À¸·Î ÀüȯµÇ´Â °úÁ¤À» ¾ïÁ¦ÇÑ´Ù´Â °ÍÀ» ½Ã»çÇÑ´Ù. ¿À¿Á½Å À¯µµ ¿¡Æ¿·» »ý¼ºÀº Æú¸®¾Æ¹Î »ýÇÕ¼º ¾ïÁ¦Á¦ÀÎ DFMA¾Æ DFMO¿¡ ÀÇÇÏ¿© °¢°¢ ÇöÀúÇÏ°Ô ÃËÁøµÇ¾úÀ¸¸ç DFMA¿¡ ÀÇÇÑ ¿¡Æ¿·» »ý¼ºÀÇ Áõ°¡´Â spermineÀ» °í³óµµ·Î ó¸®ÇÏ¹Ç·Î½á ¿ÏÀüÈ÷ ¼Ò¸êµÇ´Â °á°ú¸¦ ¾ò¾ú´Ù. ÀÌ·¯ÇÑ °á°úµéÀº ¿À¿Á½Å°ú ¿¡Æ¿·»¿¡ ´ëÇÑ RanunculusÀÇ ¼¼Æ÷¼ºÀå ¹ÝÀÀ¿¡¼­ ³»»ý Æú¸®¾Æ¹ÎÀÌ Á¶Àý ¿ªÇÒÀ» ¼öÇàÇÑ´Ù´Â °¡´É¼ºÀ» ÀÔÁõÇÏ´Â °ÍÀÌ´Ù.
Cell elongation is known to be promoted by ethylene in petioles of Ranunculus sceleratus. Treatment of petiole segments with spermine resulted in an inhibition of cell elongation and of ethylene biosynthesis in the presence of applied auxin. Dose response curve for the spermine inhibition of auxin-induced ethylene production appeared similar to that of ACC-based ethylene production suggesting that the polyamine inhibits ethylene biosynthesis by blocking the conversion of ACC to etylene. Auxin-induced ethylene production was significantly promoted by treatment of the tissue with either DFMA or DFMO. specific inhibitors of polyamine biosynthesis. Increased level of ethylene production by DFMA was found to be completely abolished by application of exogenous spermine at a high concentration. These results indicate that endogenous spermine plays a regulatory role in the growth response of Ranunculus petioles to auxin and ethylene.hylene.
 
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Journal of Plant Biology / v.35, no.4, 1992³â, pp.425-429
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ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199211920116308)
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