WOX2and polar auxin transport during spruce embryo pattern formation
نویسندگان
چکیده
منابع مشابه
Molecular Regulation of Embryo Development in Norway Spruce Polar Auxin Transport and Transcription Factors
Early events in embryo development are critical for the plant body formation. During this phase the apical-basal axis, the radial symmetry, and the primary meristems are specified. The shoot apical meristem (SAM) and the root apical meristem (RAM) will subsequently give rise to all above-ground and below-ground tissues. Despite the environmental and economical importance of conifers, the regula...
متن کاملKinetics of polar auxin transport.
The movement of auxin in the basipetal and acropetal directions is compared for 4 types of tissue. It is observed that the transport may proceed in either a linear or a non-linear manner with time. The polarity of transport through any given type of tissue increases exponentially with increasing lengths of tissue traversed, suggesting that the polarity of transport is developed as a consequence...
متن کاملThe polar auxin transport inhibitor NPA impairs embryo morphology and increases the expression of an auxin efflux facilitator protein PIN during Picea abies somatic embryo development.
Auxin and polar auxin transport have been implicated in controlling embryo patterning and development in angiosperms but less is known from the gymnosperms. The aims of this study were to determine at what stages of conifer embryo development auxin and polar auxin transport are the most important for normal development and to analyze the changes in embryos after treatment with the polar auxin i...
متن کاملInhibition of polar auxin transport by ethylene.
Applied ethylene influences the growth of etiolated pea stem sections cut from untreated plants, but has no effect on (14)C-indoleacetic acid uptake, polar transport or destruction. However, the capacity of the polar auxin transport system is markedly reduced in sections cut from plants grown in ethylene, while the velocity of auxin transport is unchanged under these conditions. Inhibition of t...
متن کاملPolar Auxin Transport: Cell Polarity to Patterning
Auxin is a signaling molecule with profound influence on plant morphogenesis. Because of its activity gradient-related effects on plant development and response programs, it is considered as a plant morphogen. Auxin displays a spectacular ability to mobilize in a cell-to-cell and polar fashion. Auxin efflux carrier PIN proteins direct this intercellular flow of auxin and thus bear a ratelimitin...
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ژورنال
عنوان ژورنال: Plant Signaling & Behavior
سال: 2009
ISSN: 1559-2324
DOI: 10.4161/psb.4.2.7684