PGP4, an ATP Binding Cassette P-Glycoprotein, Catalyzes Auxin Transport in Arabidopsis thaliana Roots (Record no. 41935)

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control field MX-MdCICY
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control field 20250625124704.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-7611
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Title PGP4, an ATP Binding Cassette P-Glycoprotein, Catalyzes Auxin Transport in Arabidopsis thaliana Roots
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Volume/sequential designation The Plant Cell, 17(11), p.2922-2939, 2005
520 3# - SUMMARY, ETC.
Summary, etc. Members of the ABC (for ATP binding cassette)superfamily of integral membrane transporters function in cellular detoxification, cell-to-cell signaling, and channel regulation. More recently, members of the multidrug resistance P-glycoprotein (MDR/PGP)subfamily of ABC transporters have been shown to function in the transport of the phytohormone auxin in both monocots and dicots. Here, we report that the Arabidopsis haliana MDR/PGP PGP4 functions in the basipetal redirection of auxin from the root tip. Reporter gene studies showed that PGP4 was strongly expressed in root cap and epidermal cells. PGP4 exhibits apolar plasma membrane localization in the root cap and polar localization in tissues bove. Root gravitropic bending and elongation as well as lateral root formation were reduced in pgp4 mutants compared with the wild type. pgp4 exhibited reduced basipetal auxin transport in roots and a small decrease in shoot-to-root transport consistent with a partial loss of the edirective auxin sink in the root. Seedlings overexpressing PGP4 exhibited increased shoot-to-root auxin transport. Heterologous expression of PGP4 in mammalian cells resulted in 1-N-naphthylthalamic acid-reversible net uptake of [3H]indole-3-acetic acid. These results indicate that PGP4 functions primarily in the uptake of redirected or newly synthesized auxin in epidermal root cells.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Terasaka, K.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Blakeslee, J.J.
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Personal name Titapiwatanakun, B.
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Personal name Peer, W.A.
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Personal name Bandyopadhyay, A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Makam, S.N.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Lee, O.R.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Lee, O.R.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Murphy, A.S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Sato, F.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Yazakic, K.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1QIKtW04ccgU7H9zWFq35r6Nn3Oo3otw8/view?usp=drivesdk">https://drive.google.com/file/d/1QIKtW04ccgU7H9zWFq35r6Nn3Oo3otw8/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-7611 25.06.2025 25.06.2025 Documentos solicitados