کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2046722 1073802 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Talk global, act local—patterning the Arabidopsis embryo
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Talk global, act local—patterning the Arabidopsis embryo
چکیده انگلیسی

The primary axis and main tissue types of Arabidopsis are laid down in the early embryo. Apical-to-basal auxin flux functions as a global organizer of the axis, and recent reports are clarifying our mechanistic understanding of how a graded auxin distribution is generated and interpreted. Polar targeting of PIN transporters in the cells of the embryo is dynamic and linked to their phosphorylation status, suggesting a flexible mechanism for regulating auxin flux in space and time. PLETHORA transcription factors then interpret the graded auxin distribution to provide positional values along the axis in a dose-dependent manner. A comparable framework for tissue patterning in the radial dimension is still lacking, although cell surface signaling probably plays a key role.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Opinion in Plant Biology - Volume 11, Issue 1, February 2008, Pages 28–33
نویسندگان
, , ,