Polar Auxin Transport (Oryza sativa)

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1-8AUX Auxin influx transportersCELLPIN Auxin Efflux transporterspH = 5.0OS12G0133800H+indole-3-acetic acidH+ ATPaseindole-3-acetateOS11G0137000OS11G0122800OS08G0529000OS06G0660200OS06G0232300OS05G0576900OS02G0743400OS01G0919800OS01G0802700OS01G0715600OS09G0505400OS01G0643300indole-3-acetateH+H+CELLOS01G0856500OS03G0244600OS11G0169200OS05G0447200OS10G0147400indole-3-acetic acidindole-3-acetateH+indole-3-acetate(H+)x2(H+)x2H+ ATPaseH+pH = 7.0pH = 7.0Plasma membranePlasma membraneCytosolCytosolpH = 5.0Cell wallCell wallAuxin (IAA) transport direction


Polar auxin transport pathway of rice. Even though we have shown a representative diagram of influx and efflux proteins on different but adjacent cells, the auxin influx and efflux transport proteins when present in the same cell, are often located in the plasma membrane of cell's opposite side or on the sides (left/right). All the different paralogs of influx and efflux proteins may not be present in the same cell. Often their expression and localization is tissue, cell, organ and development stage specific. This helps in directing the flow of auxin towards 'auxin maxima' sites in plant organs and cells as needed. In some cases auxin can permeate through the plasma membrane.

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  1. Zhang Q, Li J, Zhang W, Yan S, Wang R, Zhao J, Li Y, Qi Z, Sun Z, Zhu Z; ''The putative auxin efflux carrier OsPIN3t is involved in the drought stress response and drought tolerance.''; Plant J, 2012 PubMed Europe PMC
  2. Du C, Xu Y, Wang Y, Chong K; ''Adenosine diphosphate ribosylation factor-GTPase-activating protein stimulates the transport of AUX1 endosome, which relies on actin cytoskeletal organization in rice root development.''; J Integr Plant Biol, 2011 PubMed Europe PMC
  3. Chen Y, Fan X, Song W, Zhang Y, Xu G; ''Over-expression of OsPIN2 leads to increased tiller numbers, angle and shorter plant height through suppression of OsLAZY1.''; Plant Biotechnol J, 2012 PubMed Europe PMC
  4. Balzan S, Johal GS, Carraro N; ''The role of auxin transporters in monocots development.''; Front Plant Sci, 2014 PubMed Europe PMC
  5. Zhao H, Ma T, Wang X, Deng Y, Ma H, Zhang R, Zhao J; ''OsAUX1 controls lateral root initiation in rice (Oryza sativa L.).''; Plant Cell Environ, 2014 PubMed Europe PMC
  6. Xu M, Zhu L, Shou H, Wu P; ''A PIN1 family gene, OsPIN1, involved in auxin-dependent adventitious root emergence and tillering in rice.''; Plant Cell Physiol, 2005 PubMed Europe PMC
  7. Wang JR, Hu H, Wang GH, Li J, Chen JY, Wu P; ''Expression of PIN genes in rice (Oryza sativa L.): tissue specificity and regulation by hormones.''; Mol Plant, 2009 PubMed Europe PMC
  8. Sun H, Tao J, Hou M, Huang S, Chen S, Liang Z, Xie T, Wei Y, Xie X, Yoneyama K, Xu G, Zhang Y; ''A strigolactone signal is required for adventitious root formation in rice.''; Ann Bot, 2015 PubMed Europe PMC


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107219view14:31, 17 September 2019MaintBotChEBI identifier normalization
97553view14:54, 24 May 2018Mkutmonchange "Ensembl Plants" to "Ensembl"
97517view13:49, 24 May 2018DeSlChanged ENSEMBL Plant ID to ENSEMBL for OS11G0137000
97514view13:45, 24 May 2018TeacupChanged gene database from ensembl plant to ensembl
97468view09:43, 23 May 2018DeSlChanged one plants ensembl ID
88329view15:51, 1 August 2016FehrhartOntology Term : 'transport pathway' added !
88328view15:50, 1 August 2016FehrhartOntology Term : 'hormone signaling pathway' added !
87404view11:05, 22 July 2016MaintBotadded missing graphids
80329view21:32, 5 June 2015PjaiswalModified description
80328view21:22, 5 June 2015PjaiswalNew pathway

External references


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NameTypeDatabase referenceComment
(H+)x2Metabolite24636 (ChEBI) Synonym: proton
H+ ATPasePlasma mambrane H+ ATPase
H+Metabolite24636 (ChEBI) Synonym: proton
OS01G0643300GeneProductOS01G0643300 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS01G0715600GeneProductOS01G0715600 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS01G0802700GeneProductOS01G0802700 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS01G0856500GeneProductOS01G0856500 (Ensembl Plants) Auxin influx transporter
OS01G0919800GeneProductOS01G0919800 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS02G0743400GeneProductOS02G0743400 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS03G0244600GeneProductOS03G0244600 (Ensembl Plants) Auxin influx transporter
OS05G0447200GeneProductOS05G0447200 (Ensembl Plants) Auxin influx transporter
OS05G0576900GeneProductOS05G0576900 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS06G0232300GeneProductOS06G0232300 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS06G0660200GeneProductOS06G0660200 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS08G0529000GeneProductOS08G0529000 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS09G0505400GeneProductOS09G0505400 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS10G0147400GeneProductOS10G0147400 (Ensembl Plants) Auxin influx transporter
OS11G0122800GeneProductOS11G0122800 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS11G0137000GeneProductOS11G0137000 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
OS11G0169200GeneProductOS11G0169200 (Ensembl Plants) Auxin influx transporter
OS12G0133800GeneProductOS12G0133800 (Ensembl Plants) PIN1 Homolog: Auxin eflux transporter
indole-3-acetateMetabolite30854 (ChEBI) Synonym: IAA(-) ion
indole-3-acetic acidMetabolite16411 (ChEBI) Synonym: IAA

Annotated Interactions

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