Regulation of Polar Auxin Transport by AtPIN1 in Arabidopsis Vascular Tissue
Регуляция полярного транспорта ауксина белком AtPIN1 в сосудистой ткани Arabidopsis
1998-12-18
SCID: 54.1/vzwct6wx
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Arabidopsis thalianaAtPIN1Auxin efflux carrierPolar auxin transportVascular tissue
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Abstract (AI)
Polar auxin transport controls multiple developmental processes in plants, including the formation of vascular tissue. Mutations affecting the PIN-FORMED (PIN1) gene diminish polar auxin transport in Arabidopsis thaliana inflorescence axes. The AtPIN1gene was found to encode a 67-kilodalton protein with similarity to bacterial and eukaryotic carrier proteins, and the AtPIN1 protein was detected at the basal end of auxin transport-competent cells in vascular tissue. AtPIN1 may act as a transmembrane component of the auxin efflux carrier.
Key Findings
1
AtPIN1 encodes a 67-kilodalton protein showing similarity to bacterial and eukaryotic carrier proteins.
2
AtPIN1 localizes to the basal end of auxin transport-competent vascular cells.
3
Mutations in the Arabidopsis PIN1 gene reduce polar auxin transport in inflorescence axes.
4
Polar auxin transport is implicated in vascular tissue formation and other developmental processes in Arabidopsis.
5
The localization and sequence similarity suggest that AtPIN1 may function as a transmembrane component of the auxin efflux carrier.
Research Object
AtPIN1 protein in Arabidopsis thaliana vascular tissue
Research Subject
AtPIN1-mediated regulation and cellular localization of polar auxin transport, including its potential role as a transmembrane auxin efflux component
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1998-12-18
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