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5 期             王建伟等: 甘蓝型油菜转录因子 MYB4 的克隆、亚细胞定位及表达分析                                         7 8 9

            而全面阐明 BnaMYB4 在甘蓝型油菜 Cd 胁迫响应                         structural similarities to transcriptional activators [J]. The
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            中的分子机制ꎮ
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                 综上所述ꎬ本研究结果表明:(1) BnaMYB4 编                      Overexpression of the wild soybean R2R3 ̄MYB transcription
            码一个典型的 R2R3 ̄MYB 转录因子ꎬ其序列特征、                          factor GsMYB15 enhances resistance to salt stress and
            结构域及进化关系均支持这一分类ꎻ(2) 该蛋白定                             Helicoverpa armigera in transgenic Arabidopsis  [ J ].
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            位于细胞核ꎬ符合转录因子的功能定位ꎬ并在 Cd                            SHIU S Hꎬ SHIH M Cꎬ LI W Hꎬ 2005. Transcription factor
            胁迫下表现出组织特异性表达响应ꎻ(3) 其在根中                             families have much higher expansion rates in plants than in
            本底表达最高ꎬ暗示其可能在根系 Cd 胁迫响应中                             animals [J]. Plant Physiologyꎬ 139(1): 18-26.
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            发挥基础调控作用ꎬ而在 Cd 胁迫下ꎬ其响应模式                             Visualization of protein interactions in living plant cells using
            为叶片轻微诱导ꎬ根部变化不明显ꎬ提示 BnaMYB4                           bimolecular fluorescence complementation [ J]. The Plant
            可能通过不同组织中的调控机制参与甘蓝型油菜                                Journalꎬ 40(3): 428-438.
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            对 Cd 胁迫的适应过程ꎮ 这些发现为进一步解析                             regulates flavonoids accumulation and abiotic stress tolerance
            BnaMYB4 在重金属胁迫中的功能机制及油菜抗逆                            in transgenic Arabidopsis thaliana [J]. Molecular Genetics
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            育种提供了重要依据ꎮ
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               of PCS1 and MT1C in Arabidopsis [ J]. Plant Scienceꎬ  geneꎬ OsMYB2ꎬ is involved in saltꎬ coldꎬ and dehydration
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