Multiple phytohormones promote root hair elongation by regulating a similar set of genes in the root epidermis in Arabidopsis.
Multiple phytohormones promote root hair elongation by regulating a similar set of genes in the root epidermis in Arabidopsis.
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多种植物激素通过调节拟南芥根表皮中一组相似的基因来促进根毛伸长
DOI：
10.1093/jxb/erw400
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发表时间：
2016-12
影响因子：
6.9
通讯作者：
Gan Y
中科院分区：
文献类型：
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作者：
Zhang S;Huang L;Yan A;Liu Y;Liu B;Yu C;Zhang A;Schiefelbein J;Gan Y
Auxin, ethylene, and cytokinin regulate root-hair initiation unequally but promote elongation synergistically. Detailed analyses suggest that these hormones regulate a similar set of root hair-specific genes through diverted upstream signaling pathways. Multiple phytohormones, including auxin, ethylene, and cytokinin, play vital roles in regulating cell development in the root epidermis. However, their interactions in specific root hair cell developmental stages are largely unexplored. To bridge this gap, we employed genetic and pharmacological approaches as well as transcriptional analysis in order to dissect their distinct and overlapping roles in root hair initiation and elongation in Arabidopsis thaliana. Our results show that among auxin, ethylene, and cytokinin, only ethylene induces ectopic root hair cells in wild-type plants, implying a special role of ethylene in the hair initiation stage. In the subsequent elongation stage, however, auxin, ethylene, and cytokinin enhance root hair tip growth equally. Our data also suggest that the effect of cytokinin is independent from auxin and ethylene in this process. Exogenous cytokinin restores root hair elongation when the auxin and ethylene signal is defective, whereas auxin and ethylene also sustain elongation in the absence of the cytokinin signal. Notably, transcriptional analyses demonstrated that auxin, ethylene, and cytokinin regulate a similar set of root hair-specific genes. Together these analyses provide important clues regarding the mechanism of hormonal interactions and regulation in the formation of single-cell structures.
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影响因子：
4.5
作者：
Bruex A;Kainkaryam RM;Wieckowski Y;Kang YH;Bernhardt C;Xia Y;Zheng X;Wang JY;Lee MM;Benfey P;Woolf PJ;Schiefelbein J
通讯作者：
Schiefelbein J
影响因子：
9.2
作者：
Berger, F;Haseloff, J;Dolan, L
通讯作者：
Dolan, L
影响因子：
4.6
作者：
Bernhardt, C;Lee, MM;Schiefelbein, J
通讯作者：
Schiefelbein, J
影响因子：
7.4
作者：
MASUCCI, JD;SCHIEFELBEIN, JW
通讯作者：
SCHIEFELBEIN, JW
DOI：
10.1111/j.1365-313x.2008.03711.x
发表时间：
2009-02
期刊：
The Plant journal : for cell and molecular biology
影响因子：
--
作者：
Hansen M;Chae HS;Kieber JJ
通讯作者：
Kieber JJ