By histochemical detection of GUS activity, high levels of GUS expression were found in metabolism tissues such as seedling, stigma and anther, and CEO2 maybe localized in nuclear.
GUS组织化学分析发现CEO2主要在代谢比较旺盛的部位如幼苗、柱头及其花药等组织表达，CEO2可能定位于细胞核。
GUS activity assays indicated that the PCHS2 promoter detected was only expressed in anthers and pistils, whereas no expression was detected in stems, leaves and other flower tissues.
GUS活性分析表明，在PCHS2的驱动下，仅能在花药和雌蕊中检测到GUS活性，茎、叶和其他花组织中都没有发现GUS活性的表达。
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