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Volumn 10, Issue 6, 2007, Pages 616-623

Mechanisms of auxin-dependent cell and tissue polarity

Author keywords

[No Author keywords available]

Indexed keywords

ARABIDOPSIS PROTEIN; AUX1 PROTEIN, ARABIDOPSIS; CARRIER PROTEIN; INDOLEACETIC ACID DERIVATIVE; PGP PROTEIN, PLANT; UNCLASSIFIED DRUG; VEGETABLE PROTEIN;

EID: 35648956086     PISSN: 13695266     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.pbi.2007.07.008     Document Type: Review
Times cited : (39)

References (50)
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    • Vectorial information for Arabidopsis planar polarity is mediated by combined AUX1, EIN2, and GNOM activity
    • Reports that an auxin gradient can provide directional information to coordinate the polarity of root hair positioning in the plane of the epidermal layer. The auxin gradient acts downstream of and is dependent on AUX1, EIN2 and GNOM function but acts upstream of coordinate polar localisation of ROP to the hair initiation site.
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    • Provides the first loss-of-function evidence that a plant Rho GDP dissociation inhibitor (RhoGDI) contributes to local execution of cell polarity. Arabidopsis RhoGDI1/SCN1 is shown to restrict the spatial polar localisation of ROP2 and root hairs to a single site along the trichoblast.
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    • ••] this study shows that overexpression of tobacco Nt-RhoGDI2 in tobacco pollen tubes interferes with polar pollen tube growth.
    • ••] this study shows that overexpression of tobacco Nt-RhoGDI2 in tobacco pollen tubes interferes with polar pollen tube growth.
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    • Control of leaf vascular patterning by polar auxin transport
    • Precise mapping of leaf vascular formation from the onset of leaf pre-procambium initiation using PIN1-GFP as a polarity marker reveals the earliest known events during auxin-transport-dependent initiation of vascular tissue polarity and patterning to occur in epidermal tissues. A combination of pharmacological and genetic studies demonstrates that early epidermal PIN1 expression domain dynamics and coordinate PIN1 polarisation are self-organising, auxin-transport-dependent events. These result in epidermal 'auxin drainage' to convergence points of auxin accumulation that define the initiation points of major vein formation. This mechanism is postulated to underlie major leaf-vein positioning and phyllotactic patterning in plants.
    • Scarpella E., Marcos D., Friml J., and Berleth T. Control of leaf vascular patterning by polar auxin transport. Genes Dev 20 (2006) 1015-1027. Precise mapping of leaf vascular formation from the onset of leaf pre-procambium initiation using PIN1-GFP as a polarity marker reveals the earliest known events during auxin-transport-dependent initiation of vascular tissue polarity and patterning to occur in epidermal tissues. A combination of pharmacological and genetic studies demonstrates that early epidermal PIN1 expression domain dynamics and coordinate PIN1 polarisation are self-organising, auxin-transport-dependent events. These result in epidermal 'auxin drainage' to convergence points of auxin accumulation that define the initiation points of major vein formation. This mechanism is postulated to underlie major leaf-vein positioning and phyllotactic patterning in plants.
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    • Tobacco RhoGTPase ACTIVATING PROTEIN1 spatially restricts signaling of RAC/Rop to the apex of pollen tubes
    • Highlights a potential mechanism by which cell polarity may be locally executed in tobacco pollen tubes. Transient overexpressions studies of RhoGAP1 demonstrate its localisation at the flanks of pollen tubes, suggesting a local mechanism by which apical activity of the small GTPase RAC5 may be prevented to spread to the flanks of the pollen tube.
    • Klahre U., and Kost B. Tobacco RhoGTPase ACTIVATING PROTEIN1 spatially restricts signaling of RAC/Rop to the apex of pollen tubes. Plant Cell 18 (2006) 3033-3046. Highlights a potential mechanism by which cell polarity may be locally executed in tobacco pollen tubes. Transient overexpressions studies of RhoGAP1 demonstrate its localisation at the flanks of pollen tubes, suggesting a local mechanism by which apical activity of the small GTPase RAC5 may be prevented to spread to the flanks of the pollen tube.
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    • A molecular framework for plant regeneration
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    • Patterns of auxin transport and gene expression during primordium development revealed by live imaging of the Arabidopsis inflorescence meristem
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    • •]. Similarly, future approaches that specifically integrate experimental data on cell polarisation with its computational modelling may increase understanding of mechanisms driving auxin-dependent cell and tissue polarity.
    • •]. Similarly, future approaches that specifically integrate experimental data on cell polarisation with its computational modelling may increase understanding of mechanisms driving auxin-dependent cell and tissue polarity.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.