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Erika Echeverria

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Papers by Erika Echeverria

Research paper thumbnail of Impact of wildfire return interval on the ectomycorrhizal resistant propagules communities of a Mediterranean open forest

Fungal Biology, 2010

18 ECM species were detected in the bioassay. The most frequent fungi were 15 Cenococcum geophilu... more 18 ECM species were detected in the bioassay. The most frequent fungi were 15 Cenococcum geophilum, Inocybe jacobi, Thelephora terrestris, Tomentella ellisii, 16 Rhizopogon luteoulus, and R. roseolus. The first four species occurred on both hosts. High-17 fires frequency promoted species like Rhizopogon roseolus, and influenced negatively other 18 species like R. luteolus. Inocybe jacobi was positively affected by moderate frequency fires, 19 but decreased significantly with recurrent fires. The number of ECM species colonizing Q. 20

Research paper thumbnail of Trends of HIV1 molecular epidemiology in Venezuela: introduction of subtype C and identification of a novel B/C mosaic genome

Journal of Clinical Virology, 2005

Research paper thumbnail of Comunidades de hongos ectomicorrícicos en ambientes propensos al fuego: compañeros esenciales para el reestablecimiento de pinares mediterráneos

Recibido el 25 de febrero de 2009, aceptado el 15 de abril de 2009. Buscardo, E., Rodríguez-Echev... more Recibido el 25 de febrero de 2009, aceptado el 15 de abril de 2009. Buscardo, E., Rodríguez-Echeverría, S., De Angelis, P., Freitas, H. (2009). Comunidades de hongos ectomicorrícicos en ambientes propensos al fuego: compañeros esenciales para el reestablecimiento de pinares mediterráneos. Ecosistemas 18(2):55-63.

Research paper thumbnail of Seroprevalencia de HTLV-I/II en hombres gays y trabajadoras sexuales de la Isla de Margarita, Venezuela

Revista Da Sociedade Brasileira De Medicina Tropical, 1998

Research paper thumbnail of HIV Type 1 Drug Resistance among Naive Patients from Venezuela

Aids Research and Human Retroviruses, 2007

In this study, we characterize proviral DNA of 20 HIV-1 asymptomatic antiretroviral-naive patient... more In this study, we characterize proviral DNA of 20 HIV-1 asymptomatic antiretroviral-naive patients from Venezuela in env, gag, and pol genes regions. Results from both env/gag HMA subtyping and phylogenetic analysis of pol partial sequences led to the description of clade B in all cases. Nevertheless, the high prevalence of polymorphisms was particularly evident among the protease sequences. A 10% prevalence of major resistance mutations to RTIs was found. Our data also suggested that the protease polymorphisms I62T and V77T could be considered as molecular markers of the subtype B local epidemic. In addition, we show how proviral DNA can be used as a reliable tool to follow trends of resistance mutation transmission.

Research paper thumbnail of Despacho de Mercadería con IWMS

Research paper thumbnail of Impact of wildfire return interval on the ectomycorrhizal resistant propagules communities of a Mediterranean open forest

Fungal Biology, 2010

18 ECM species were detected in the bioassay. The most frequent fungi were 15 Cenococcum geophilu... more 18 ECM species were detected in the bioassay. The most frequent fungi were 15 Cenococcum geophilum, Inocybe jacobi, Thelephora terrestris, Tomentella ellisii, 16 Rhizopogon luteoulus, and R. roseolus. The first four species occurred on both hosts. High-17 fires frequency promoted species like Rhizopogon roseolus, and influenced negatively other 18 species like R. luteolus. Inocybe jacobi was positively affected by moderate frequency fires, 19 but decreased significantly with recurrent fires. The number of ECM species colonizing Q. 20

Research paper thumbnail of Trends of HIV1 molecular epidemiology in Venezuela: introduction of subtype C and identification of a novel B/C mosaic genome

Journal of Clinical Virology, 2005

Research paper thumbnail of Comunidades de hongos ectomicorrícicos en ambientes propensos al fuego: compañeros esenciales para el reestablecimiento de pinares mediterráneos

Recibido el 25 de febrero de 2009, aceptado el 15 de abril de 2009. Buscardo, E., Rodríguez-Echev... more Recibido el 25 de febrero de 2009, aceptado el 15 de abril de 2009. Buscardo, E., Rodríguez-Echeverría, S., De Angelis, P., Freitas, H. (2009). Comunidades de hongos ectomicorrícicos en ambientes propensos al fuego: compañeros esenciales para el reestablecimiento de pinares mediterráneos. Ecosistemas 18(2):55-63.

Research paper thumbnail of Seroprevalencia de HTLV-I/II en hombres gays y trabajadoras sexuales de la Isla de Margarita, Venezuela

Revista Da Sociedade Brasileira De Medicina Tropical, 1998

Research paper thumbnail of HIV Type 1 Drug Resistance among Naive Patients from Venezuela

Aids Research and Human Retroviruses, 2007

In this study, we characterize proviral DNA of 20 HIV-1 asymptomatic antiretroviral-naive patient... more In this study, we characterize proviral DNA of 20 HIV-1 asymptomatic antiretroviral-naive patients from Venezuela in env, gag, and pol genes regions. Results from both env/gag HMA subtyping and phylogenetic analysis of pol partial sequences led to the description of clade B in all cases. Nevertheless, the high prevalence of polymorphisms was particularly evident among the protease sequences. A 10% prevalence of major resistance mutations to RTIs was found. Our data also suggested that the protease polymorphisms I62T and V77T could be considered as molecular markers of the subtype B local epidemic. In addition, we show how proviral DNA can be used as a reliable tool to follow trends of resistance mutation transmission.

Research paper thumbnail of Despacho de Mercadería con IWMS

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