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Comment
. 2009 Sep 22;106(38):16016-7.
doi: 10.1073/pnas.0909300106. Epub 2009 Sep 15.

Cytokinin and WUSCHEL tie the knot around plant stem cells

Robert Sablowski  1
Affiliations
Comment

Cytokinin and WUSCHEL tie the knot around plant stem cells

Robert Sablowski. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The author declares no conflict of interest.

Figures

Fig. 1.
Fig. 1.
Role of cytokinin in patterning the shoot stem cell niche. (A) Regulatory network described by Gordon et al. (4). Ck is cytokinin; blunted lines and black arrows indicate repression and activation, respectively, and the white arrow represents the maintenance signal induced by WUS. (B) Speculative model of how cytokinin signaling establishes the spatial pattern of WUS expression. Graded orange represents an apical-basal gradient of cytokinin produced in the meristem region where stem cells are located (hatched region); green dots mark the region where AHK4 is expressed in response to cues along the radial axis of the shoot. Where a minumum level of cytokinin reaches the AHK4 receptor, the network represented in A translates the graded cytokinin signal into the sharp boundaries of the WUS-expressing domain (surrounded by the purple line). This region then produces the signal (white arrow) that maintains the shoot stem cells.
See this image and copyright information in PMC

Comment on

References

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