乐虎游戏

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  GENSHIZHIWUDENGLUHOUJINHUADEQIGUAN,TADECHUXIANSHIZHIWUSHIYINGLUDIHUANJINGDEZHONGYAOYIBU。HUASHIZHENGJUXIANSHI,JUELEIZHIWUHEZHONGZIZHIWUDEGONGTONGZUXIANZAINIPENJIZHONGQICHUXIANLEGENQIYUANSHIJIAN。DANSHILEHUYOUXIDUIZHEICIGENQIYUANGUOCHENGZHONGDEFENZIJINHUALICHENGZHIZHISHENSHAO,QIZHONGDEGUANJIANKEXUEWENTISHISHENGZHANGSUXINHAOTONGLUZAIGENJINHUAZHONGRUHEBEIZHAOMUBINGZHUDAOGENQIGUANDEFASHENG。2020NIAN5YUE,ZHONGGUOKEXUEYUANFENZIZHIWUKEXUEZHUOYUECHUANGXINZHONGXINXULINYANJIUZUZAIJINHUASHENGWUXUEQUANWEIQIKANMolecular Biology and EvolutionFABIAOLETIWEI“Molecular evolution of auxin-mediated root initiation in plants”DEYANJIULUNWEN,YIEvo-DevoDEJIAODUJIESHILEGENQIYUANHEJINHUADEFENZILUXIAN。

  通过对蕨类植物Ceratopteris richardii(水蕨)的研究发现,生长素是控制不定根和侧根发生的核心激素。施加生长素可以诱导水蕨产生大量的不定根。生长素信号通路直接激活CrWOXA的表达以形成根创始细胞(root founder cell),接着CrWOXA直接激活CrWUL的表达使得根创始细胞分裂为根尖。CrWOXACrWUL都是WOX家族的转录因子基因。

  与种子植物拟南芥的研究结果比较后发现,“生长素-WOX”的同源分子通路也控制着拟南芥根创始细胞的发育(Xu, 2018, Curr. Opin. Plant Biol. 41:39-45)。这一发现在分子层面暗示“生长素-WOX”分子通路很可能被蕨类植物和种子植物的共同祖先招募,用于根创始细胞和根器官的起源与进化。随着植物的进化发展,这一分子通路中的生长素信号转导基因和WOX基因拷贝数不断增加,被蕨类植物和种子植物不同类型的根相继使用,起始不同类型根的发育(Liu and Xu, 2018, Trends Plant Sci.乐虎游戏 23:490-496)。

  WEIGUANZHIWUGENDEQIYUANHEJINHUAHAIYOUZHEHENDUOWEIJIEZHIMI。XIANCUNDEWEIGUANZHIWUSHIZAOQIZUXIANLIANGGESHIXIDEHOUDAI: ZHENYEZHIWUSHIXI(BAOKUOJUELEIZHIWUHEZHONGZIZHIWU)HESHISONGZHIWUSHIXI。HUASHIZHENGJUXIANSHI,ZHEILIANGGESHIXIZHONGGENQIGUANDEQIYUANSHIDULISHIJIAN: SHISONGZHIWUSHIXIZAINIPENJIZAOQICHUXIANLEDIYICIGENQIYUANSHIJIAN;ZHENYEZHIWUSHIXIZHONGJUELEIZHIWUHEZHONGZIZHIWUDEGONGTONGZUXIANZAINIPENJIZHONGQICHUXIANLEDIERCIGENQIYUANSHIJIAN。SUIRANZHEIXIANGGONGZUOQUERENLESHENGZHANGSUZAIZHENYEZHIWUSHIXIZHONGKONGZHIGENQIGUANFASHENGDEBAOSHOUFENZIGONGNENG,DANSHISONGZHIWUSHIXIZHONGGENFASHENGDEFENZIJIZHIHESHENGZHANGSUXINGWEIDOUHAIBUQINGXI,ZHEISHIJIANGLAIYANJIUDEZHONGYAOFANGXIANG。

乐虎游戏  YUJIEHEZHANGYUYUNWEILUNWENBINGLIEDIYIZUOZHE,XULINWEITONGXUNZUOZHE。ZHEIXIANGYANJIUYOUZHONGGUOKEXUEYUANFENZIZHIWUKEXUEZHUOYUECHUANGXINZHONGXINXULINYANJIUZUHEZHANGYIJINGYANJIUZUHEZUOWANCHENG。YANJIUDEDAOLEZHONGKEYUAN、JIJINWEIHEZHIWUFENZIYICHUANGUOJIAZHONGDIANSHIYANSHIXIANGMUDEZHICHI。

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