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Analyses of auxin transport in the inflorescence and hypocotyl £¨ÅßÖᣩof independent tt4 alleles£¨µÈλ»ùÒò£© indicate that auxin transport is elevated in plants with a tt4 mutation(Í»±ä ). In hypocotyls of tt4, this elevated transport is reversed when flavonoids are synthesized by growth of plants on the flavonoid precursor, naringenin. These results are consistent with a role for flavonoids as endogenous£¨ÄÚÔ´ÐÔ£© regulators of auxin transport. ¶ÔÄâÄϽætransparent testa (tt4)Í»±äÌ壨Àà»ÆÍªÉúÎïºÏ³É¹ý³ÌÖеÚÒ»¸öø-²é¶ûͪºÏ³Éø»ùÒò±àÂëÇø·¢ÉúÍ»±ä£©½øÐÐÑо¿·¢ÏÖ£¬µ±tt4µÈλ»ùÒòµ¥¶À·¢ÉúÍ»±äʱ£¬»¨ÐòºÍÅßÖáÖÐÉú³¤ËصÄÔËÊäÔöÇ¿ £¬µ±Ëæ×ÅÖ²ÎïµÄÉú³¤£¬Àà»ÆÍªºÏ³ÉÖмäǰÌåÎïèÖÆ¤ËسöÏÖºó¼´·¢ÉúÄæ×ª¡£Ñо¿½á¹ûÓëÀà»ÆÍª×÷ΪÉú³¤ËØÔËÊäµÄÄÚÔ´µ÷½ÚÒò×ӵĽÇÉ«ÏàÒ»Ö¡£ ÇëÎÊ£¬¡°Àà»ÆÍªÉúÎïºÏ³É¹ý³ÌÖеÚÒ»¸öø-²é¶ûͪºÏ³Éø»ùÒò±àÂëÇø·¢ÉúÍ»±ä¡±ºÍ¡°µ±tt4µÈλ»ùÒòµ¥¶À·¢ÉúÍ»±äʱ¡±·ÒëÊÇ·ñÓÐÎó£¿Ç븫Õý¡£ tt4ÊÇÕâ¸ötransparent testa (tt4) plants with a mutation in the gene encoding the first enzyme in flavonoid biosynthesis, chalcone synthase. [ Last edited by shaojh on 2012-8-22 at 11:20 ] |
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Analyses of auxin transport in the inflorescence and hypocotyl £¨ÅßÖᣩof independent tt4 alleles£¨µÈλ»ùÒò£© indicate that auxin transport is elevated in plants with a tt4 mutation(Í»±ä ). In hypocotyls of tt4, this elevated transport is reversed when flavonoids are synthesized by growth of plants on the flavonoid precursor, naringenin. These results are consistent with a role for flavonoids as endogenous£¨ÄÚÔ´ÐÔ£© regulators of auxin transport. żÊÇÕâô·ÒëÕâ¶Î»°µÄ£º ¶Ôº¬ÓÐÓÎÀëtt4µÈλ»ùÒòµÄ»¨ÐòºÍÅßÖáÖÐÖ²ÎïÉú³¤ËØÔËÊäµÄÑо¿±íÃ÷£¬µ±Ö²ÎïÖÐÓÐtt4Í»±äʱ£¬Ö²ÎïÉú³¤ËØ»á¼ÓËÙÔËÊä¡£ÔÚÓÐtt4µÄÅßÖáÖУ¬Ëæ×ÅÖ²ÎïµÄÉú³¤£¬µ±»ÆÍªºÏ³É¹ý³Ì³öÏÖ»ÆÍªÇ°Ì廯ºÏÎïèÖÆ¤ËØÊ±£¬ÕâÖÖ¼ÓËÙÔËÊä»á·¢ÉúÄæ×ª¡£ÕâЩ½á¹û¶¼Óë»ÆÍª¾ßÓÐÖ²ÎïÉú³¤ËØÔËÊäµÄÄÚÔ´ÐÔµ÷½Ú¹¦ÄÜÏàÒ»Ö¡£ transparent testa (tt4) plants with a mutation in the gene encoding the first enzyme in flavonoid biosynthesis, chalcone synthase. Õâ¾äżÊÇÕâô·ÒëµÄ£º »ùÒòÓÐÍ»±äµÄ͸Ã÷ÍâÖÖÆ¤Ö²ÎïÔÚ»ÆÍªÉúÎïºÏ³É¹ý³ÌÖбàÂëµÄµÚÒ»¸öø¡ª¡ª–˶úͪºÏ³Éø¡£ ±¾È˲»ÊÇÉúÎïרҵ£¬²»Ì«¶®×¨ÒµÊõÓ¾ÍÊǸù¾Ý³£¹æ×Ô¼º×ÁÄ¥×Å·µÄ£¬Óв»Í¨µÄµØ·½£¬Â¥Ö÷¼ûÁ£¡´ó¼ÒÇáÅÄ¡£ |
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