Wound signaling: The missing link in plant regeneration
Wound signaling: The missing link in plant regeneration
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伤口信号：植物再生中缺失的环节
DOI：
10.1080/15592324.2016.1238548
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发表时间：
2016-01-01
影响因子：
2.9
通讯作者：
Liu, Wu
中科院分区：
文献类型：
--
作者：
Chen, Lyuqin;Sun, Beibei;Liu, Wu
损伤是植物再生过程中发生的第一个事件。然而，植物再生中的伤口信号传导几乎不被理解。利用一个简单的系统从头根器官从拟南芥叶外植体，我们分析了下游的基因伤口信号。叶外植体可能产生至少两种伤口信号来触发短期和长期伤口信号。短期创伤信号主要参与控制再生感受态细胞的生长素行为和命运转变，而长期创伤信号主要调节创伤部位的细胞环境并维持再生感受态细胞中的生长素水平。参与生长素生物合成的YUCCA（YUC）基因是叶肉细胞中的短期创伤信号和再生感受态细胞中的长期创伤信号的靶标。YUCs的表达模式为植物再生中伤口信号传导的分子基础提供了重要信息。
Wounding is the first event that occurs in plant regeneration. However, wound signaling in plant regeneration is barely understood. Using a simple system of de novo root organogenesis from Arabidopsis thaliana leaf explants, we analyzed the genes downstream of wound signaling. Leaf explants may produce at least two kinds of wound signals to trigger short-term and long-term wound signaling. Short-term wound signaling is primarily involved in controlling auxin behavior and the fate transition of regeneration-competent cells, while long-term wound signaling mainly modulates the cellular environment at the wound site and maintains the auxin level in regeneration-competent cells. YUCCA (YUC) genes, which are involved in auxin biogenesis, are targets of short-term wound signaling in mesophyll cells and of long-term wound signaling in regeneration-competent cells. The expression patterns of YUCs provide important information about the molecular basis of wound signaling in plant regeneration.