. Instituto de Biotecnologia UNAM

IBT-UNAM : Dr. Omar Homero Pantoja Ayala

Dr. Omar Homero Pantoja Ayala

Líder Académico »» Grupo
Investigador
Tutor de Maestría y Doctorado
Nivel III del SNI
Departamento de Biología Molecular de Plantas

Líneas de investigación

email: omar @ibt.unam.mx
Teléfonos
Oficina +52 (777) 329-1656
desde la CDMX 562-27656
red UNAM 27656

- Licenciatura: Ciencias Biologicas, Escuela Nacional de Ciencias Biologicas, IPN (1974)
- Doctorado: en Ciencias, Universidad de Stirling, Escocia, GB (1988)
- Overseas Research Award by the Committee of Vice-Chancellors and Principals of the Universities of the United Kingdom, otorgado durante los estudios de Doctorado (1985-1988)

Estudiantes

Pedro Ivan Rogel

Biol. Daniel Lagunas "Analisis de la terminal carboxilo del receptor de proteinas cargo Erv14 en la levadura Saccharomyces cerevisiae"

Bryan Arturo Mendieta

M.C. Carolina Yanez

Armando Arturo Hernandez

Publicaciones recientes

Zimmermannova,O. Felcmanova,K. Rosas-Santiago,P. Papouskova,K. Pantoja,O. Sychrova,H. 2019. Erv14 cargo receptor participates in regulation of plasma-membrane potential, intracellular pH and potassium homeostasis via its interaction with K(+)-specific transporters Trk1 and Tok1 Biochimica et Biophysica Acta (BBA), 1866, 1376-1388.

Jeong,K. Pantoja,O. Baten,A. Waters,D. Kretzschmar,T. Wissuwa,M. Julia,C.C. Heuer,S. Rose,T.J. 2018. Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 PLoS ONE, 13, e0203654.

Wudick,M.M. Portes,M.T. Michard,E. Rosas-Santiago,P. Lizzio,M.A. Nunes,C.O. Campos,C. Damineli,D.S.C. Carvalho,J.C. Lima,P.T. Pantoja,O. Feijo,J.A. 2018. CORNICHON sorting and regulation of GLR channels underlie pollen tube Ca2+ homeostasis Science, 360, 533.

Jeong,K. Julia,C.C. Waters,D.L.E. Pantoja,O. Wissuwa,M. Heuer,S. Liu,L. Rose,T.J. 2017. Remobilisation of phosphorus fractions in rice flag leaves during grain filling: Implications for photosynthesis and grain yields PLoS ONE, 12, e0187521.

Rosas-Santiago,P. Lagunas-Gomez,D. Yanez-Dominguez,C. Vera-Estrella,R. Zimmermannova,O. Sychrova,H. Pantoja,O. 2017. Plant and yeast cornichon possess a conserved acidic motif required for correct targeting of plasma membrane cargos Biochimica et Biophysica Acta (BBA), 1864, 1809-1818.

Vera-Estrella,R. Gomez-Mendez,M.F. Amezcua-Romero,J.C. Barkla,B.J. Rosas-Santiago,P. Pantoja,O. 2017. Cadmium and zinc activate adaptive mechanisms in Nicotiana tabacum similar to those observed in metal tolerant plants Planta, 246, 433-451.

Garibay-Hernandez,A. Barkla,B.J. Vera-Estrella,R. Martinez,A. Pantoja,O. 2017. Membrane proteomic insights into the physiology and taxonomy of an oleaginous green microalga Plant Physiology, 173, 390-416.

Jeong,K. Baten,A. Waters,D.L. Pantoja,O. Julia,C.C. Wissuwa,M. Heuer,S. Kretzschmar,T. Rose,T.J. 2017. Phosphorus remobilisation from rice flag leaves during grain filling: an RNA-seq study Plant Biotechnology Journal, 15, 15-26.

Rosas-Santiago,P. Zimmermannova,O. Vera-Estrella,R. Sychrova,H. Pantoja,O. 2016. Erv14 cargo receptor participates in yeast salt tolerance via its interaction with the plasma-membrane Nha1 cation/proton antiporter Biochimica Et Biophysica Acta-Biomembranes, 1858, 67-74.

Oh,D.H. Barkla,B.J. Vera-Estrella,R. Pantoja,O. Lee,S.Y. Bohnert,H.J. Dassanayake,M. 2015. Cell type-specific responses to salinity New Phytologist, 207, 627-644.

Rosas-Santiago,P. Lagunas-Gomez,D. Barkla,B.J. Vera-Estrella,R. Lalonde,S. Jones,A. Frommer,W.B. Zimmermannova,O. Sychrova,H. Pantoja,O. 2015. Identification of rice cornichon as a possible cargo receptor for the Golgi-localized sodium transporter OsHKT1;3 Journal of Experimental Botany, 66, 2733-2748.

Vera-Estrella,R. Barkla,B.J. Pantoja,O. 2014. Comparative 2D-DIGE analysis of salinity responsive microsomal proteins from leaves of salt-sensitive Arabidopsis thaliana and salt-tolerant Thellungiella salsuginea Journal of Proteomics, 111, 113-127.

Rodriguez-Plaza,J.G. Morales-Nava,R. Diener,C. Schreiber,G. Gonzalez,Z.D. Lara-Ortiz,M.T. Ortega-Blake,I. Pantoja,O. Volkmer,R. Klipp,E. Herrmann,A. Del Rio,G. 2014. Cell Penetrating Peptides and Cationic Antibacterial Peptides: two sides of the same coin Journal of Biological Chemistry, 289, 14448-14457.

Barkla,B.J. Vera-Estrella,R. Miranda-Vergara,M.C. Pantoja,O. 2014. Quantitative proteomics of heavy metal exposure in Arabidopsis thaliana reveals alterations in one-carbon metabolism enzymes upon exposure to zinc Journal of Proteomics, 111, 128-138.

Barkla,B.J. Vera-Estrella,R. Pantoja,O. 2013. Progress and challenges for abiotic stress proteomics of crop plants Proteomics, 13, 1801-1815.

Barkla,B.J. Vera-Estrella,R. Pantoja,O. 2012. Protein profiling of epidermal bladder cells from the halophyte mesembryanthemum crystallinum Proteomics, 12, 2862-2865.

Pantoja,O. 2012. High affinity ammonium transporters: molecular mechanism of action Frontiers in Plant Science, 3, 34.

Vera-Estrella,R. Barkla,B.J. Amezcua-Romero,J.C. Pantoja,O. 2012. Day/Night Regulation of Aquaporins During the CAM Cycle in Mesembryanthemum crystallinum Plant Cell And Environment, 35, 485-501.

Ortiz-Ramirez,C. Mora,S.I. Trejo,J. Pantoja,O. 2011. PvAMT1;1, a highly selective ammonium transporter that functions as an H+/NH4+ symporter Journal of Biological Chemistry, 286, 31113-31122.

Amezcua-Romero,J.C. Pantoja,O. Vera-Estrella,R. 2010. Ser123 is essential for the water channel activity of McPIP2;1 from Mesembryanthemum crystallinum Journal of Biological Chemistry, 285, 16739-47.

Barkla,B.J. Vera-Estrella,R. Hernandez-Coronado,M. Pantoja,O. 2009. Quantitative Proteomics of the Tonoplast Reveals a Role for Glycolytic Enzymes in Salt Tolerance Plant Cell, 21, 4044-4058.

Loque,D. Mora,S.I. Andrade,S.L. Pantoja,O. Frommer,W.B. 2009. Pore mutations in the ammonium transporter AMT1 with increased electrogenic ammonium transport activity Journal of Biological Chemistry, 284, 24988-24995.

Barkla,B.J. Vera-Estrella,R. Pantoja,O. 2007. Enhanced Separation of Membranes during Free Flow Zonal Electrophoresis in Plants Analytical Chemistry, 79, 5181-5187.

Platten,J.D. Cotsaftis,O. Berthomieu,P. Bohnert,H. Davenport,R.J. Fairbairn,D.J. Horie,T. Leigh,R.A. Lin,H.X. Luan,S. Maser,P. Pantoja,O. Rodriguez-Navarro,A. Schachtman,D.P. Schroeder,J.I. Sentenac,H. Uozumi,N. Very,A.A. Zhu,J.K. Dennis,E.S. Tester,M. 2006. Nomenclature for HKT transporters, key determinants of plant salinity tolerance Trends in Plant Science, 11, 372-374.

Vera-Estrella,R. Barkla,B.J. Garcia-Ramirez,L. Pantoja,O. 2005. Salt Stress in Salt Cress Activates Na+ Transport Mechanisms Required for Salinity Tolerance Plant Physiology, 139, 1507-1517.

Shigaki,T. Barkla,B.J. Miranda-Vergara,M.C. Zhao,J. Pantoja,O. Hirschi,K.D. 2005. Identification of a crucial histidine involved in metal transport activity in the Arabidopsis cation/H + exchanger CAX1 Journal of Biological Chemistry, 280, 30136-30142.

Vera-Estrella,R. Barkla,B.J. Bohnert,H.J. Pantoja,O. 2004. Novel Regulation of Aquaporins during Osmotic Stress Plant Physiology, 135, 2318-2329.

Sul,H. Balderas,E. Vera-Estrella,R. Golldack,D. Quigley,F. Zhao,C.S. Pantoja,O. Bohnert,H.J. 2003. Expression of the cation transporter McHKT1 in a halophyte Plant Molecular Biology, 52, 967-980.

Miedema,H. de Boer,A.H. Pantoja,O. 2003. The gating kinetics of the slow vacuolar channel. A novel mechanism for SV channel functioning? Journal of Membrane Biology, 194, 11-20.

Barkla,B.J. Vera-Estrella,R. Camacho-Emiterio,J. Pantoja,O. 2002. Na+/H+ exchange in the halophyte Mesembryanthemum crystallinum is associated with cellular sites of Na+ storage Functional Plant Biology, 29, 1017-1024.

Golldack,D. Su,H. Quigley,F. Kamasani,U.R. Munoz-Garay,C. Balderas,E. Popova,O.V. Bennett,J. Bohnert,H.J. Pantoja,O. 2002. Characterization of a HKT-type transporter in rice as a general alkali cation transporter Plant Journal, 31, 529-542.

Pantoja,O. Smith,J.A. 2002. Sensitivity of the Plant Vacuolar Malate Channel to pH, Ca2+ and Anion-Channel Blockers Journal of Membrane Biology, 186, 31-42 * .

Miedema,H. Pantoja,O. 2001. Anion modulation of the slowly activating vacuolar channel Journal of Membrane Biology, 183, 137-145.

Miedema,H. Balderas,E. Pantoja,O. 2000. Current oscillations under voltage-clamp conditions: an interplay of series resistance and negative slope conductance Journal of Membrane Biology, 173, 31-37.

Barkla,B.J. Vera-Estrella,R. Pantoja,O. Kirch,H.H. Bohnert,H.J. 1999. Aquaporin localization Trends in Plant Science, 4, 86-88.

Vera-Estrella,R. Barkla,B.J. Bohnert,H.J. Pantoja,O. 1999. Salt stress in Mesembryanthemum crystallinum L. cell suspensions activates adaptive mechanisms similar to those observed in the whole plant Planta, 207, 426-435.

Barkla,B.J. Vera-Estrella,R. Pantoja,O. 1999. Towards the production of salt-tolerant crops Advances in Experimental Medicine and Biology, 464, 77-89.

Barkla,B.J. Vera-Estrella,R. Maldonado-Gama,M. Pantoja,O. 1999. Abscisic acid induction of vacuolar H+-ATPase activity in mesembryanthemum crystallinum is developmentally regulated Plant Physiology, 120, 811-820.

Cheffings,C.M. Pantoja,O. Ashcroft,F.M. Smith,J.C. 1997. Malate transport and vacuolar ion channels in CAM plants Journal of Experimental Botany, 48, 623-631.

Barkla,B.J. Pantoja,O. 1996. Physiology of ion transport across the tonoplast of higher plants Annual Review Of Plant Physiology And Plant Molecular Biology, 47, 159-184.

Pantoja,O. Dainty,J. Blumwald,E. 1992. Cytoplasmic chloride regulates cation channels in the vacuolar membrane of plant cells Journal of Membrane Biology, 125, 219-229 * .

Pantoja,O. Gelli,A. Blumwald,E. 1992. Voltage-dependent calcium channels in plant vacuoles Science, 255, 1567-1570 * .

Bertl,A. Blumwald,E. Coronado,R. Eisenberg,R. Findlay,G. Gradmann,D. Hille,B. Kohler,K. Kolb,H.A. MacRobbie,E. Meissner,G. Miller,C. Neher,E. Palade,P. Pantoja,O. Sanders,D. Schroeder,J. Slayman,C. Spanswick,R. Walker,A. Williams,A. 1992. Electrical measurements on endomembranes [1] Science, 258, 873-874 * .

Pantoja,O. Gelli,A. Blumwald,E. 1992. Characterization of vacuolar malate and K+ channels under physiological conditions Plant Physiology, 100, 1137-1141 * .

Pantoja,O. Willmer,C.M. 1991. Ferricyanide reduction by guard cell protoplasts Journal of Experimental Botany, 42, 323-329 * .

Pantoja,O. Dainty,J. Blumwald,E. 1990. Tonoplast ion channels from sugar beet cell suspensions: Inhibition by amiloride and its analogs Plant Physiology, 94, 1788-1794 * .

Pantoja,O. Dainty,J. Blumwald,E. 1989. Ion channels in vacuoles from halophytes and glycophytes FEBS Letters, 255, 92-96 * .

Pantoja,O. Willmer,C.M. 1988. Redox activity and peroxidase activity associated with the plasma membrane of guard-cell protoplasts Planta, 174, 44-50 * .

Arguello,C. Alanis,J. Pantoja,O. Valenzuela,B. 1986. Electrophysiological and ultrastructural study of the atrioventricular canal during the development of the chick embryo Journal of Molecular and Cellular Cardiology, 18, 499-510 * .

Pantoja,O. Willmer,C.M. 1986. Pressure effects on membrane potentials of mesophyll cell protoplasts and epidermal cell protoplasts of Commelina communis L. Journal of Experimental Botany, 37, 315-320 * .

Barkla,B.J. Vera-Estrella,R. Pantoja,O. 2014. Growing Arabidopsis in vitro: cell suspensions, in vitro culture, and regeneration en: Salinas,J. Arabidopsis Protocols. Springer. pags. 53-62

Barkla,B.J. Pantoja,O. 2011. Plasma Membrane and Abiotic Stress en: Murphy,A. Plant Plasma Membrane, Plant Cell Monographs. Springer. pags. 457-470

Barkla,B.J. Vera-Estrella,R. Balderas,E. Pantoja,O. 2008. Mecanismos de tolerancia a la salinidad en plantas en: *agustin Una ventana al quehacer científico. Instituto de Biotecnología de la UNAM 25 aniversario, cap 23. Mexico, D.F.. UNAM. pags. 263-272

Pantoja,O. Barkla,B.J. Vera-Estrella,R. 2000. Ion channels and ion co-transporters in the tonoplast en: Rogers,J.C. Vacuolar Compartments. Sheffield Academic Press. pags. 199-220

Otras Publicaciones

Vera-Estrella,R. Garcia-Mariano,R. Gomez-Mendez,M.F. Rosas-Santiago,P. Pantoja-Ayala,O. 2019. Uso de tabaco para fitorremediar suelos contaminados con metales pesados Biotecnología en Movimiento.Revista de divulgación del Instituto de Biotecnología de la UNAM, 17, 23-25.

Rosas-Santiago,P. Pantoja-Ayala,O. 2019. Entendiendo el sistema de paquetería de la célula Biotecnología en Movimiento.Revista de divulgación del Instituto de Biotecnología de la UNAM, 16, 14-15.

Rosas-Santiago,P. Pantoja-Ayala,O. 2018. Una buena charla molecular es necesaria para la reproducción sexual de las plantas Biotecnología en Movimiento.Revista de divulgación del Instituto de Biotecnología de la UNAM, 14, 3-7.

* Indica publicación con otra institución de adscripción