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Çѱ¹½Ä¹°ÇÐȸ / v.34, no.2, 1991³â, pp.113-119
Àú¿Â ó¸®ÇÑ º­ À¯½Ä¹°¿¡¼­ ź¼öÈ­¹° ´ë»çÀÇ º¯È­
( Alteration of Carbohydrate Metabolism in Rice Seedlings under Low Temperature )
È«¼øº¹; ¼­¿ï´ëÇб³ »ý¹°Çаú;
 
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Àú¿Â ó¸®($4^{circ}C$)°¡ º­(Oryza sativa L. cv. Samjin) À¯½Ä¹° ÀÙÀÇ È¯¿ø´ç, ¼³ÅÁ, ³ì¸» ¹× fructose-2,6-bisphosphate(F-2,$6-P_2$)ÀÇ ÇÔ·®¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇÏ¿´À¸¸ç, ÀÌ¿Í °ü·ÃÀÖ´Â amylase, invertase ¹× fructose-1,6-bisphosphatase(FB-Pase)ÀÇ È°¼ºº¯È­¸¦ Áß½ÉÀ¸·Î 3ÀÏ µ¿¾È ÃøÁ¤ÇÏ¿´´Ù. 3ÀÏ µ¿¾È Àú¿Âó¸®ÇÑ º­ À¯½Ä¹°¿¡¼­ÀÇ È¯¿ø´ç°ú ¼³ÅÁÀÇ ÇÔ·®Àº Áõ°¡ÇÏ¿´°í, ¼ö¿ë¼º ³ì¸»°ú ºñ¼ö¿ë¼º ³ì¸»ÀÇ ÇÔ·®Àº °¨¼ÒÇÏ¿´´Ù. ÇÑÆí, amylaseÀÇ È°¼ºÀº Áõ°¡ÇÏ¿´°í acid invertaseÀÇ È°¼ºÀ» °¨¼ÒÇÏ¿´À¸¸ç, alkaline invertaseÀÇ È°¼ºÀº º¯È­°¡ ¾ø¾ú´Ù. ½ºÆ®·Î¸¶ ¹× ½ÃÅäÁ¹ FBPaseÀÇ È°¼ºÀº °¨¼ÒÇÏ¿´´Ù. ÀÌ¿¡ ºÎÇյǴ °ÍÀ¸·Î F-2,$6-P_2$ÀÇ ÇÔ·®ÀÌ °¨¼ÒÇÏ¿´´Ù. ±×·¯¹Ç·Î, Àú¿Â󸮷Πȯ¿ø´çÀÇ ÇÔ·®ÀÌ Áõ°¡ÇÑ °ÍÀº ³ì¸» ºÐÇØ´ÉÀÇ Áõ°¡¿¡ ±âÀÎÇÑ °ÍÀ¸·Î »ç·áµÇ¸ç, ¼³ÅÁÀÇ ÇÔ·®ÀÌ Áõ°¡ÇÑ °ÍÀº ¼³ÅÁ ºÐÇØ´ÉÀÇ ÀúÇÏ¿Í F-2,$6-P_2$ÀÇ ÇÔ·®°¨¼Ò¿¡ µû¸¥ ½ÃÅäÁ¹ FBPaseÀÇ È°¼ºÁõ°¡¿¡ ±âÀÎÇÑ °ÍÀ¸·Î ÇØ¼®µÈ´Ù. ¶ÇÇÑ Àú¿Â¿¡ ÀÇÇÑ ÀÌ·¯ÇÑ Åº¼öÈ­¹° ´ë»çÀÇ º¯È­´Â º­ À¯½Ä¹°ÀÇ Àú¿Â ¼Õ»óÀ» ÀϺγª¸¶ ¹æÁöÇÏ·Á´Â ±âÀÛÀ̶ó ÇØ¼®µÈ´Ù.
The contents of reducing sugar, sucrose, starch and fructose-2,6-bisphosphate (F-Z,$6-P_2$) in relation to the activities of amylase, invertase and fructose-1,6-bisphosphatase (FBPase) were investigated from the leaves of rice (Oryza sativa L. cv. Samjin) seedlings grown at $4^{circ}C$ for 3 days_ In the seedlings, the contents of reducing sugar and sucrose were increased, but soluble and insoluble starch were declined. Under this condition, amylase activity was increased. but acid invertase activity was declined and alkaline invertase activity was not changed. Cytosolic and stromal FBPase activities were increased. But F-2,$6-P_2$ content was declined. It seemed that the increase of reducing sugar content might be due to the increased activity of amylase and the increase of sucrose content might be related to the increased activity of cytosolic FBPase, reduced content of F-Z,$6-P_2$ and reduced rate of hydrolysis of sucrose during the cold treatment. These results suggested that the changes in carbohydrate rnetabolim of rice seedlings under low temperature reflect one of the protection mechanism to the low temperature during the cold treatment.atment.
 
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Journal of Plant Biology / v.34, no.2, 1991³â, pp.113-119
Çѱ¹½Ä¹°ÇÐȸ
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199111920115578)
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