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Â¥Ö÷ÄãµÄÎÊÌâ½â¾öûÓа¡£¿ÎÒÒ²ÏëÓÃROS¼ì²âÊÔ¼ÁºÐ£¬·¢ÏÖÊÊÓÃÓÚÌù±Úϸ°û£¬¿ÉÎҵIJÄÁÏÊÇÖ²ÎïҶƬ£¬·¢ÏÖÆªÎÄÏ×£¬¿ÉÊÇϸ½Ú·½ÃæÃèÊöµÄ²»Çå³þ£¬ËùÒÔÏëÇë½ÌÒ»ÏÂÂ¥Ö÷ Leaf tissue from wild-type tobacco and tobacco constitutively expressing HopG1¨CHA was ground in liquid nitrogen and resus- pended in ice-cold 10 mM Tris-HCl, pH 7.3. Samples were centrifuged twice to remove cell debris and 0.1 ml of the supernatant was placed in duplicate on a Microfluor ®1 white wellplate (Thermo Scientific, http://www.thermofisher.com). 2¡ä-7¡ä- dichlorodihydrofluorescein diacetate (H2DCFDA, Invitrogen, http://www.Invitrogen.com) to a final concentration of 10 mM was added to the wells and mixed. Fluorescence was measured with an excitation wavelength of 485 nm and an emission wavelength of 535 nm on a CaryEcilpse fluorometer. Protein content was determined by the Bradford assay and relative basal ROS levels calculated with wild-type tobacco were set to 1. |
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