|
|
|
Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.20, no.1, 2002³â, pp.40-45
|
´ßÀÇÀåÇ®¿¡ $Cd^{2+}$ 󸮽à $Cd^{2+}$ Èí¼ö¿Í »ýÀå¿¡ ¹ÌÄ¡´Â $Ca^{2+}$ÀÇ ¿µÇâ
( The Effect of $Cd^{2+}$ on the Accumulation of $Cd^{2+}$ and Growth of $Cd^{2+}$ -treated Commelina communis L. ) |
| ÀÌȲ±¸;ÀÌÁØ»ó; »óÁö´ëÇб³ »ý¸í°úÇаú;»óÁö´ëÇб³ »ý¸í°úÇаú;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| 3ÁÖ°£ Á¤»óÀûÀ¸·Î »ýÀåÇÑ ´ßÀÇÀåÇ®À» Hoagland¿ë¾×$(pm100mu{M};Cd^{2+},100mu{M};Cd^{2+}+100mu{M};Ca^{2+},;100mu{m};Cd^{2+}+200mu{M}$ EGTA) ¿¡¼ 1ÁÖ µ¿¾È ¼ö°æ ¹è¾çÇÑ ÈÄ $Cd^{2+}$ 󸮽à $Cd^{2+}$ Èí¼ö¿Í »ýÀå¿¡ ¹ÌÄ¡´Â $Ca^{2+}$ÀÇ ¿µÇâÀ» Á¶»çÇÏ¿´´Ù. EGTA󸮴 $Cd^{2+}$ ¼ö¼Û¿¡ ¿µÇâÀ» ÁÖÁö ¾Ê¾ÒÁö¸¸ »ýÀå ¹× »ýü·®¿¡¼$Cd^{2+}$ÀÇ µ¶¼º È¿°ú¸¦ ¿ÏȽÃÄ×´Ù. $100mu{M};Cd^{2+}+100mu{M};Ca^{2+}$ 󸮱¸¿¡¼´Â $Cd^{2+}$ ¼ö¼Û¿¡ $Ca^{2+}$ÀÌ Å« ¿µÇâÀ» ÁÖ¾ú´Ù. $Cd^{2+}$ 󸮱¸¿¡ ºñÇØ »Ñ¸®¿¡¼ÀÇ Ä«µå¹Å ³óµµ´Â ¾à 22% ±×¸®°í ÁÙ±â´Â ¾à 54% ¾ïÁ¦µÇ¾ú´Ù. ÀÙÀ¸·ÎÀÇ Ä«µå¹Å ¼ö¼Ûµµ $Ca^{2+}$¿¡ ÀÇÇØ Å©°Ô ¾ïÁ¦µÇ¾ú´Ù. »ýÀåÀÇ ¿ÜÇüÀû ÆÐÅÏÀÇ º¯È´Â »ýÀåÀ²ÀÇ ±Þ°ÝÇÑ °¨¼Ò¿´´Ù. ÁÙ±â´Â ¾à 37% ±×¸®°í »Ñ¸®´Â ¾à 48% »ýÀåÀÌ ¾ïÁ¦µÇ¾ú´Ù. ÀÌ·¯ÇÑ »ýÀåÀÇ ¾ïÁ¦´Â »ýü·®ÀÇ µ¿¹ÝÀûÀÎ °¨¼Ò¸¦ °¡Á®¿Ô´Ù. ƯÈ÷ ÁÙ±â´Â ´ëÁ¶±¸¿¡ ºñÇØ ¾à 60% ±×¸®°í »Ñ¸®´Â 68% »ýü·®¸¦ °¨¼Ò½ÃÄ×´Ù. À§ÀÇ °á°úµé·ÎºÎÅÍ,$Ca^{2+}$ÀÌ $Cd^{2+}$¿¡ ÀÇÇÑ ½Ä¹°ÀÇ µ¶¼ºÀ» ¿ÏȽÃŰÁö ¸øÇÏ°í ¿ÀÈ÷·Á Áõ°¡½ÃŰ´Â ¹Ý¸é¿¡ EGTA´Â $Cd^{2+}$ÀÇ È¿°ú¸¦ ¾ïÁ¦ÇÑ´Ù´Â °ÍÀ» º¸¿©ÁÖ¾ú´Ù. |
|
| Three-week old Commelina was transferred to and grown in Hoagland solution $(pm100mu{M};Cd^{2+},100mu{M};Cd^{2+}+100mu{M};Ca^{2+},;100mu{m};Cd^{2+}+200mu{M}$ EGTA) for two weeks and then the effect of $Ca^{2+}$ on the accumulation of $Cd^{2+}$ and growth of $Cd^{2+}$- treated Commelina was investigated. In the treatment of EGTA, $Cd^{2+}$ transport into the plant was not affected, but $Cd^{2+}$ - induced toxicity such as biomass and growth of Commelina. was reduced. In the treatment of $100mu{M};Cd^{2+}+100mu{M};Ca^{2+}$ transport was markedly affected by $Ca^{2+}$. The $Ca^{2+}$ also reduced about 37% and 48% of the concentration of $Cd^{2+}$ in root and stem for a week respectively. $Ca^{2+}$treatment also induced the change of the growth pattern of Commelina leading to inhibition of about 37%, 48% and 68% of the growth of stem and root and the fresh weight toy a week. When $Cd^{2+}$ was treated with $Ca^{2+}$for two weeks, the plant was dead, therefore the growth and ion contribution could not be measured. Therefore, it could be concluded that $Ca^{2+}$ did not reduce the toxicity of $Cd^{2+}$, but enhanced $Cd^{2+}$- induced toxicity and EGTA showed a decrease of $Cd^{2+}$- induced toxicity. |
| |
| Ű¿öµå |
| Calcium;cadmium;Commelina; |
| |
|
|
 |
|
ȯ°æ»ý¹° / v.20, no.1, 2002³â, pp.40-45
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921492460)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|