Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 15, Issue 1, Pages 4-9Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2011.10.007
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Funding
- NSF [IOB-0842284]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [0842284] Funding Source: National Science Foundation
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Apical-to-basal auxin flux is a defining feature of land plants and determines their main body axis. How is the axis first set up in the embryo? Recent studies reveal that the establishment of embryonic polarity with the asymmetric first division as well as the separation of shoot and root fates within the proembryo depend on transcriptional regulation in the zygote and early embryo. Although the functional connections need to be better defined, this transcriptional network likely provides the positional information required for initiating the machinery capable of processing the systemic signal auxin in a context-dependent manner.
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