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ÕâÊÇÒ»¶ÎÓйØÖÖ×ÓÃÈ·¢µÄÎÄÏ×£º Hilhorst (1990a, b) proposed a model that integrated the effects of all three factors. The model suggests that dormancy reduction and the onset of germination are regulated by a plasma membrane-bound protein, and that processes leading to germination can occur when this protein is bound to the active form of phytochrome (Pfr). The model proposes that the binding of the protein to Pfr is enhanced by temperature-induced changes in membrane fluidity that result in the exposure of the protein to NO-3, and that this exposure increases the affinity of the protein for phytochrome . ллÁË£¡ [ Last edited by green1223 on 2009-7-8 at 15:01 ] |
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Hilhorst(1990a, b)Ìá³öÒ»¸öÄ£ÐÍ×ÛºÏÁËËùÓÐÈý¸öÒòËØµÄÓ°Ïì¡£¸ÃÄ£ÐͱíÃ÷£¬ÐÝÃߵļõÉٺͿªÊ¼ÃÈÑÀÊܵ½Ä¤µ°°×µÄµ÷½Ú£¬¶øÇÒÔÚÕâ¸ö¹ý³ÌÖе±(Ĥ)µ°°×½áºÏµ½»îÔ¾µÄ¹âÃôÉ«ËØ(Pfr)ʱ»áÒý·¢ÃÈÑ¿¡£¸ÃÄ£ÐÍÌá³öµÄ(Ĥ)µ°°×ºÍPfrµÄ½áºÏÌá¸ßÁËζȱ仯ÒýÆðµÄĤµÄÁ÷¶¯ÐÔµ¼ÖÂ(Ĥ)µ°°×±©Â¶ÔÚNO-3ÖУ¬Òò´ËÕâÖÖ±©Â¶Ôö¼ÓÁË(Ĥ)µ°°×ºÍ¹âÃôÉ«ËØµÄ½áºÏÁ¦¡£ [ Last edited by cloisonne on 2009-7-8 at 15:27 ] |
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