--- res: bibo_abstract: - Stomata are two-celled valves that control epidermal pores whose spacing optimizes shoot-atmosphere gas exchange. They develop from protodermal cells after unequal divisions followed by an equal division and differentiation. The concentration of the hormone auxin, a master plant developmental regulator, is tightly controlled in time and space, but its role, if any, in stomatal formation is obscure. Here dynamic changes of auxin activity during stomatal development are monitored using auxin input (DII-VENUS) and output (DR5:VENUS) markers by time-lapse imaging. A decrease in auxin levels in the smaller daughter cell after unequal division presages the acquisition of a guard mother cell fate whose equal division produces the two guard cells. Thus, stomatal patterning requires auxin pathway control of stem cell compartment size, as well as auxin depletion that triggers a developmental switch from unequal to equal division.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Jie foaf_name: Le, Jie foaf_surname: Le - foaf_Person: foaf_givenName: Xuguang foaf_name: Liu, Xuguang foaf_surname: Liu - foaf_Person: foaf_givenName: Kezhen foaf_name: Yang, Kezhen foaf_surname: Yang - foaf_Person: foaf_givenName: Xiaolan foaf_name: Chen, Xiaolan foaf_surname: Chen - foaf_Person: foaf_givenName: Lingling foaf_name: Zhu, Lingling foaf_surname: Zhu - foaf_Person: foaf_givenName: Hongzhe foaf_name: Wang, Hongzhe foaf_surname: Wang - foaf_Person: foaf_givenName: Ming foaf_name: Wang, Ming foaf_surname: Wang - foaf_Person: foaf_givenName: Steffen foaf_name: Vanneste, Steffen foaf_surname: Vanneste - foaf_Person: foaf_givenName: Miyo foaf_name: Morita, Miyo foaf_surname: Morita - foaf_Person: foaf_givenName: Masao foaf_name: Tasaka, Masao foaf_surname: Tasaka - foaf_Person: foaf_givenName: Zhaojun foaf_name: Ding, Zhaojun foaf_surname: Ding - foaf_Person: foaf_givenName: Jirí foaf_name: Friml, Jirí foaf_surname: Friml foaf_workInfoHomepage: http://www.librecat.org/personId=4159519E-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0002-8302-7596 - foaf_Person: foaf_givenName: Tom foaf_name: Beeckman, Tom foaf_surname: Beeckman - foaf_Person: foaf_givenName: Fred foaf_name: Sack, Fred foaf_surname: Sack bibo_doi: 10.1038/ncomms4090 bibo_volume: 5 dct_date: 2014^xs_gYear dct_language: eng dct_publisher: Nature Publishing Group@ dct_title: Auxin transport and activity regulate stomatal patterning and development@ ...