biography
Dr. Rosa MarÃa MartÃnez-Espinosa is a biologist who has used a range of disciplines to unravel nitrogen metabolism of members of the Halobacteriaceae family (Archaea Domain). Her work on the nitrogen cycle as well as the mechanisms by which haloarchaea use nitrate, nitrite and ammonium as nitrogen source or even as final electron acceptors is now showing major impacts in environmental and climate science and industrial biotechnology such as brines bioremediation. She has published >30 peer-reviewed papers that have been cited more than 200 times. Her research currently has an H-index of 8 (Web of Sciences, July 2014).
Area of Interest
Assimilatory nitrate pathway
Ammonium assimilation
Denitrification
Enzymes purification
Gene regulation
Carotenoids production
Waste water treatments
Brines bioremediation.
top publication
1. Pire, MartÃnez-Espinosa RM, Pérez Pomares F, Esclapez J, Bonete MJ (2014) Ferredoxin-dependent glutamate synthase: Involvement in ammonium assimilation in Haloferax mediterranei. Extremophiles, 18: 147-159.
2. Esclapez J, Zafrilla B, MartÃnez-Espinosa RM, Bonete MJ (2013) Cu-NirK from Haloferax mediterranei as an example of metalloprotein maturation and exportation via Tat system. BBA - Proteins and Proteomics, 1834: 1003-1009.
3. Nájera-Fernández c, Zafrilla B, Bonete MJ, Rosa MarÃa MartÃnez-Espinosa (2012) Role of the denitrifying Haloarchaea in the treatment of nitrite-brines. International Microbiology, 15:111-119.
4. Bautista V, Esclapez J, Pérez-Pomares F, MartÃnez-Espinosa RM, Camacho M and Bonete MJ (2011) Cyclodextrin glycosyltransferase: a key enzyme in the assimilation of starch by the halophilic archaeon Haloferax mediterranei. Extremophiles, 16: 47-59.
5. Zafrilla B, MartÃnez-Espinosa RM, Bonete MJ, Butt JN, Richardson DJ and Gates AJ (2011) A haloarchaeal ferredoxin electron donor that plays an essential role in nitrate assimilation. Biochem Soc Trans 39: 1844-1848.
6. MartÃnez-Espinosa RM, Cole JA, Richardson DJ and Watmough NJ (2011) Enzymology and ecology of the nitrogen cycle. Biochem Soc Trans 39: 175-178. Review.
7. Zafrilla B, MartÃnez-Espinosa RM, Alonso MA, Bonete MJ (2010) Biodiversity of Archaea and floral of two inland saltern ecosystems in the Alto Vinalopó Valley, Spain. Saline Systems, 6:10
8. Zafrilla B, MartÃnez-Espinosa RM, Esclapez J, Pérez-Pomares F, Bonete MJ (2010) SufS protein from Haloferax volcanii involved in Fe-S cluster assembly in haloarchaea. BBA-Proteomics Biochimica et Biophysica Acta-Proteins Proteomics, 1804:1476-1482.
9. Bonete MJ, MartÃnez-Espinosa RM (2009) Respiratory nitrate reductase complex from Haloferax mediterranei: applications on salted wastewater treatments and biosensor engineering. New Biotechnology, 25/S. 2.1.046
10. MartÃnez-Espinosa RM, Lledó B, Marhuenda-Egea FC, DÃaz S, Bonete MJ (2009) NO3-/NO2- assimilation in halophilic archaea: physiological analysis, nasA and nasD expressions. Extremophiles, 13: 785-792.
Book chapters
. 1. MartÃnez-Espinosa RM, Zafrilla B, Nájera C, Selva V, Bonete MJ (2012) Tratamiento de salmueras empleando haloarchaeas desnitrificantes. In: \"Nuevas aportaciones al conocimiento de los acuÃferos costeros\". pp: 597-605. Editor: López-Geta JA, Pulido Bosch A, Fernández Mejuto M, Ramos González G, RodrÃguez Hernández L. Editorial: Instituto Geológico y Minero de España. I.S.B.N. 978-84-7840-874-0
2. MartÃnez-Espinosa RM, Richardson DJ, Bonete MJ (2009) Haloarchaeas desnitrificantes: ¿biorremediación o contribuidores al cambio climático? In “Avances en el Metabolismo del Nitrógeno: de la genómica y la proteómica a las aplicaciones agronómicas, industriales y medioambientalesâ€. pp: 203-209. MarÃa José Bonete and Rosa MarÃa MartÃnez Espinosa (Coords.) Editorial Club Universitario. I.S.B.N. 978-84-8454-806-5/ 978-84-8454-944-4 (electronic version)
3. Pire C, MartÃnez-Espinosa RM, Esclapez J, Pérez-Pomares F, Bonete MJ (2009) Secuenciación y Caracterización de glutamato sintasa de Haloferax mediterranei. In “Avances en el Metabolismo del Nitrógeno: de la genómica y la proteómica a las aplicaciones agronómicas, industriales y medioambientalesâ€. pp: 137-143. MarÃa José Bonete and Rosa MarÃa MartÃnez Espinosa (Coords.) Editorial Club Universitario. I.S.B.N. 978-84-8454-806-5/ 978-84-8454-944-4 (electronic version)