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The Effects of Various Hormones on Growth of Garrot Tissue Culture
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KMID : 0368419770200020063
Abstract
´ç±ÙÀ» Àç·á·Î ÇÑ suspension culture¿¡¼ ¸î°¡Áö hormoneÀÌ ¼ºÀå¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇÏ¿´´Ù.
ÀÌµé ¼ºÀå¿¡ ¼ö¹ÝÇØ¼ ÀϾ´Â ¹è¾ç¾×ÀÇ pH º¯È ¹× ±× ¼ÓÀÇ NH_4-NÀÇ ÀÜÁ¸·® µîÀ» °æ½ÃÀûÀ¸·Î °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ¼ºÀå¿¡¼´Â 10^-5M 2,4-DÀÇ °æ¿ì°¡ ´Ù¸¥ ¸ðµç hormoneÀ» ó¸®ÇÒ ¶§ º¸´Ù ¾çÈ£ÇÑ »ýÀ°»óÀ» ³ªÅ¸³ÂÀ¸¸ç ƯÈ÷ stationary phase¿¡¼ÀÇ °Ç¹°ÁßÀº Ÿhormoneº¸´Ù 40¡50% Áõ°¡¸¦ ³ªÅ¸³»¾î ´ç±ÙÀÇ °æ¿ì´Â 2,4-D°¡ ÃÖÀûÀÇ hormoneÀ̰í 10^-5MÀÌ °¡Àå Àû´çÇÑ ³óµµÀÓÀÌ È®ÀεǾú´Ù.
2. ¹è¾ç¾×ÀÇ pH º¯È´Â Á¢Á¾ 2¡3ÀÏ µ¿¾È¿¡´Â hormoneÀÇ ¿µÇâÀ» ¾î´ÀÁ¤µµ ¹ÞÀ¸³ª 3ÀÏ ÀÌÈÄ ºÎÅÍ´Â ´ëÁ¶±¸¿Í °°Àº ¾ç»óÀ¸·Î º¯È¸¦ º¸¿© hormoneÀÇ ³óµµ¿¡ µû¸¥ pHÀÇ º¯È´Â °üÂûÇÒ ¼ö ¾ø¾ú´Ù. µû¶ó¼ pHÀÇ º¯È´Â hormoneÀÌ ¼¼Æ÷ Áõ½ÄÀÇ Àۿ볡¿¡ ÀϾ´Â Çö»óÀ̶ó ÃßÃøµÇ¾ú´Ù.
3. ¾Ï¸ð´Ï¾ÆÅ Áú¼ÒÀÇ Èí¼ö´Â hormone ´Üµ¶ 󸮽à hormoneº°, ³óµµº° Â÷ÀÌ´Â °ÅÀÇ ¾ø¾úÀ¸¸ç ¾ÈÁ¤±â·Î °¥¼ö·Ï ¸ðµç±¸¿¡¼ ´ëÁ¶±¸¿Í °°Àº ¾ç»óÀ¸·Î º¯ÈÇÏ¿´´Ù. ±×·¯¹Ç·Î À̵é hormoneÀº NH_4-NÀÇ Èí¼ö¿¡ Á÷Á¢ ¿µÇâÀ» ÁÖÁö ¾Ê´Â °ÍÀ¸·Î »ý°¢µÇ¾î ¼ºÀå¿¡ Á÷Á¢ ÇÊ¿äÇѰÍÀº NO_3-N·Î »ý°¢ÇÒ ¼ö ÀÖ¾ú´Ù.
Experiments were conducted to investigate the effects of several hormones on the growth of suspension culture of carrot (Daucus carota L.) cells, where changes in pH and the amount of NH_4-N in the medium were observed with regard to growth. A treatment with 2,4-D at 10^-5M resulted in a highest rate of growth; the hormone at this concentration caused an increase in dry weight by about 40 to 50% over the control, measured at a stationary phase. It was thus indicated that 2,4-D at 10^-5M provided the optimal condition for the suspension culture. Changes in pH of the medium were found to be affected by hormonal treatments during the first 2-3 days following the inoculation, after which the pattern of pH changes in hormone enriched media paralleled that of the control. Subsequent changes of NH_4-N and NO_3-N from the medium by the cells, and also by growth of the cells. The uptake of NH_4-N by the cells did not appear to be influenced by hormonal treatments. At a stationary phase, a considerable amount of NO_3-N played a more important role than NH_4-N in the growth of the carrot cell suspension culture.
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