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¸÷λ´óÏÀ£¬ÎÒÏÖÔÚÕýÔÚ²âÖ²ÎïҶƬÏõËỹԭø»îÐÔ£¬ËùÓõķ½·¨ÊÇ»îÌå·¨£¬NR activity was assayed in vivo by measuring NO-2 production in tissue that has been vacuum infiltrated with buffered NO-3 solutions.[31]The leaves and roots from the nonstressed and stressed seedlings were collected in the morning between 8:30 and 11:00 solar time. Circles 5mm in diameter were cut from the leaves of O. europaea. Leaves and roots of R. sphaerocarpa and roots of O. europaea were cut into 5mm sections.
Approximately 300 mg of leaf punches and 300 mg of roots from each
plant were placed into tubes containing 2mL of an incubation medium
consisting of 0.05M tris-HCl pH 7.8 and 0.25M KNO3. The tubes
were sealed and kept in the dark at 30C during 1 h. The nitrite released
into the medium was determined after incubation by treating 1mL of
the aliquots with 1mL of 1% sulphanilamide in 1M HCl and 1mL of
0.01% N-1-napthyl-ethylenediamine hydrochloride (NNEDA). After
15 min, the optical density was measured at 540nm with Beckman
spectrophotometer.
ÉÏÃæµÄÕâЩÊÇÎÒÔÚһƪSCI ÎÄÏ×Àï¿´µ½µÄ£¬ÀÏʦҪÇó°´Õâ·½·¨×ö£¬µ«ÊÇÆäÖеÄÊÔ¼ÁÅäÖÆ·½·¨£¬²Î±ÈÈÜÒºµÄÉèÖ㬻¹Óбê×¼ÇúÏߵĻæÖÆ£¬ÎÒ¶¼Ã»ÓУ¬¶øÇÒÎÒ²éÁ˺ܶàÎÄÏ×¶¼Ã»ÓоßÌåµÄ²Ù×÷²½Ö衣ϣÍû¸÷λ¸ßÈËÄܹ»°ïСµÜÒ»°Ñ£¡¸øÎÒһЩÉÏÃæ·½·¨µÄ¾ßÌå²Ù×÷²½Ö裬²»Ê¤¸Ð¼¤¡£[ Last edited by amisking on 2011-6-15 at 19:38 ]
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