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Çѱ¹½Ä¹°ÇÐȸ / v.35, no.3, 1992³â, pp.229-235
ÇüÁúÀüȯµÈ ´ã¹è½Ä¹°Ã¼ÀÇ ±â°ü¿¡ µû¸¥ Arabidopsis Cab PromoterÀÇ Â÷º°Àû ½ÇÇè
( Differential Expression of Arabidopsis Cab Promoters in Organs of Transformed Tobacco Plants )
È«¼øÁ¶; ºÎ»ê´ëÇб³ ºÐÀÚ»ý¹°Çаú;
 
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´ã¹è ½Ä¹°Ã¼¿¡¼­ Arabidopsis thaliana¿¡ Á¸ÀçÇÏ´Â 3°¡Áö ´Ù¸¥ ¿±·Ï¼Ò a/b °áÇÕ ´Ü¹éÁú (cab) À¯ÀüÀÚ promoterµéÀÇ ¹ßÇöÀ» Á¶»çÇÏ¿´´Ù. À̵é promoterÀÇ È°¼ºÀº À̵é promoter¿¡ °áÇÕµÈ reporter geneÀÇ ½Ä¹°ÀÎ CAT (chloramphenicol acetyltransfer-ase)ÀÇ È°¼ºÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. ´ã¹è¿±¿¡¼­ cab promoterÀÇ È°¼ºÀº cab1, cab2, cab3ÀÇ ¼øÀ̾ú°í, À̵é ÀÙ¿¡¼­ À¯µµÇÑ callus³ª shoot¿¡¼­µµ µ¿ÀÏÇÑ ¾ç»óÀ» º¸¿´´Ù. À̵é 3°¡Áö promoterÀÇ ¹ßÇöÀº »óºÎ¿±¿¡¼­ ÇϺο±º¸´Ù ³ôÀº Ȱ¼ºÀº º¸¿´À¸¸ç °³Ã¼°£ÀÇ ³ôÀº º¯ÀÌÆøÀº »Ñ¸®³»¸®±â¸¦ ÅëÇÏ¿© ¹«¼ºÁõ½ÄµÈ ½Ä¹°Ã¼¸¦ »ç¿ëÇÏ¿© ÁÙÀÏ ¼ö ÀÖ¾ú´Ù. À̵éÀº ¶ÇÇÑ ±â°ü ƯÀ̼ºÀ» º¸¿© Áٱ⠺¸´Ù ÀÙ¿¡¼­ÀÇ È°¼ºÀÌ ³ô¾Ò°í »Ñ¸®¿¡¼­´Â °ÅÀÇ ¹ßÇöµÇÁö ¾Ê¾Ò´Ù. ±×·¯³ª cab1 promoterÀÇ °æ¿ì, ´Ù¸¥ µÎ cab promoterµé°ú´Â ´Ù¸£°Ô, ÀÙ¿¡ ´ëÇÑ Áٱ⿡¼­ÀÇ »ó´ëÀûÀΠȰ¼ºÀÌ ³ô¾ÒÀ¸¸ç, CAT Ȱ¼ºÀ» ´ÜÀ§ ´Ü¹éÁú´çÀ» Ç¥½ÃÇÏ´Â ´ë½Å ´ÜÀ§ ¿±·Ï¼Ò´ç Ȱ¼ºÀ¸·Î ³ªÅ¸³»¾úÀ» ¶§ ÁÙ±â¿Í ÀÙ¿¡¼­ Ȱ¼ºÀÇ Â÷À̰¡ °üÂûµÇÁö ¾Ê¾Ò´Ù. Áï cab2¿Í cab3´Â ±¤ÇÕ¼º ±â°ü ƯÀ̼ºÀ» º¸ÀÌ´Â ¹Ý¸é cab1ÀÇ °æ¿ì´Â ÀÌ·¯ÇÑ Æ¯À̼ºÀ» ³ªÅ¸³»Áö ¾Ê¾Ò´Ù. ÀÌ·¯ÇÑ Çö»óÀº ÀÙ¿¡¼­ À¯µµÇÑ shoot°¡ ÁÙ±â¿Í ÀÙÀ¸·Î ºÐÈ­µÇ´Â °úÁ¤¿¡¼­µµ °üÂûµÇ¾ú´Ù.
Differential expression of the three chlorophyll afb binding (cab) protein gene (cabl, cab2, and cab3) promoters of Arabidopsis thaliana was studied in tobacco plants transformed with cab-CAT (chloramphenicol acetyltransferase) translational fusions. CAT activity was measured to monitor the activities of the cab promoters. The activity of cabi promoter was higher than the other two in transformed tobacco leaves and also in calli and shoots derived from the leaves. Their activities were organ-specific and were the lowest in roots, medium in stems, and the highest in leaves. The relative activity of cabi promoter in stems comparing to it activity in leaves was, however, much higher than the values of cab2 and cab3. When the cab promoter activity was expressed as CAT activity per unit chlorophyll instead of CAT activity per unit protein, the relative cab] promoter activity (stem/leaf) became almost unity. This result suggests that cab2 and cab3 show photosynthetic organ-specificity but cabl does not. Similar result was obtained in the differentiation process of stems and leaves from shoots derived from the transgenic tobacco leaves.leaves.
 
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Journal of Plant Biology / v.35, no.3, 1992³â, pp.229-235
Çѱ¹½Ä¹°ÇÐȸ
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199211920116111)
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