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Your search keyword '"Perez-Ortega, Sergio"' showing total 11 results
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11 results on '"Perez-Ortega, Sergio"'

1. Cryptic diversity and symbiont interactions in rock-posy lichens.

Author

Leavitt SD, Kraichak E, Vondrak J, Nelsen MP, Sohrabi M, Perez-Ortega S, St Clair LL, and Lumbsch HT

Subjects
Biodiversity, Chlorophyta classification, DNA, Fungal chemistry, DNA, Fungal isolation & purification, DNA, Fungal metabolism, Lichens classification, Lichens genetics, Phylogeny, Sequence Analysis, DNA, Chlorophyta physiology, Lichens physiology, Symbiosis
Abstract

Identifying factors that influence species interactions is central to research in symbiotic systems. While lichens represent iconic models of symbiosis and play important roles in understanding the biology of symbiotic interactions, patterns of interactions in lichen symbionts and mechanisms governing these relationships are not well characterized. This is due, in part to the fact that current taxonomic approaches for recognizing diversity in lichen symbionts commonly fail to accurately reflect actual species diversity. In this study, we employed DNA-based approaches to circumscribed candidate species-level lineages in rock-posy lichen symbionts (mycobiont=Rhizoplaca s. lat. species; photobiont=Trebouxia species). Our results revealed a high degree of cryptic diversity in both the myco- and photobionts in these lichens. Using the candidate species circumscribed here, we investigated the specificity of the symbionts toward their partners and inferred the relative importance of various factors influencing symbiont interactions. Distinct mycobiont species complexes, ecozones, and biomes are significantly correlated with the occurrence of photobiont OTUs, indicating that complex interactions among mycobiont lineages, ecogeography, and microhabitat determine interactions between photobionts and their mycobionts in lichen symbiosis. One-to-one specificity between mycobiont and photobiont species was not found, with the exception of R. maheui that associated with a single Trebouxia OTU that was not found with other Rhizoplaca s. lat. species. We estimated the most recent common ancestor of the core Rhizoplaca group at c. 62.5Ma, similar in age to the diverse parmelioid core group in the well-studied family Parmeliaceae. However, in contrast to Parmeliaceae, species in Rhizoplaca were found to associate with a narrow range of photobionts. Our study provides important perspectives into species diversity and interactions in iconic lichen symbiotic systems and establishes a valuable framework for continuing research into rock-posy lichens., (Copyright © 2016 Elsevier Inc. All rights reserved.)

Published
2016
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7. Phylogenetic generic classification of parmelioid lichens (Parmeliaceae, Ascomycota) based on molecular, morphological and chemical evidence

Author

Crespo, Ana, Kauff, Frank, Divakar, Pradeep K., del Prado, Ruth, Pérez-Ortega, Sergio, de Paz, Guillermo Amo, Ferencova, Zuzana, Blanco, Oscar, Roca-Valiente, Beatriz, Núñez-Zapata, Jano, Cubas, Paloma, Argüello, Arturo, Elix, John A., Esslinger, Theodore L., Hawksworth, David L., Millanes, Ana, Molina, M. Carmen, Wedin, Mats, Ahti, Teuvo, Aptroot, Andre, Barreno, Eva, Bungartz, Frank, Calvelo, Susana, Candan, Mehmet, Cole, Mariette, Ertz, Damien, Goffinet, Bernard, Lindblom, Louise, Lücking, Robert, Lutzoni, Francois, Mattsson, Jan-Eric, Messuti, María Inès, Miadlikowska, Jolanta, Piercey-Normore, Michele, Rico, Víctor J., Sipman, Harrie J.M., Schmitt, Imke, Spribille, Toby, Thell, Arne, Thor, Göran, Upreti, Dalip K., and Lumbsch, H. Thorsten

Published
2010

10. One hundred new species of lichenized fungi:a signature of undiscovered global diversity

Author

Lumbsch, H. Thorsten, Ahti, Teuvo, Altermann, Susanne, Amo De Paz, Guillermo, Aptroot, Andre, Arup, Ulf, Barcenas Pena, Alejandrina, Bawingan, Paulina A., Benatti, Michel N., Betancourt, Luisa, Bjoerk, Curtis R., Boonpragob, Kansri, Brand, Maarten, Bungartz, Frank, Caceres, Marcela E. S., Candan, Mehtmet, Luis Chaves, Jose, Clerc, Philippe, Common, Ralph, Coppins, Brian J., Crespo, Ana, Dal-Forno, Manuela, Divakar, Pradeep K., Duya, Melizar V., Elix, John A., Elvebakk, Arve, Fankhauser, Johnathon D., Farkas, Edit, Ferraro, Lidia Itati, Fischer, Eberhard, Galloway, David J., Gaya, Ester, Giralt, Mireia, Goward, Trevor, Grube, Martin, Hafellner, Josef, Hernandez M, Jesus E., Herrera Campos, Maria De Los Angeles, Kalb, Klaus, Karnefelt, Ingvar, Kantvilas, Gintaras, Killmann, Dorothee, Kirika, Paul, Knudsen, Kerry, Komposch, Harald, Kondratyuk, Sergey, Lawrey, James D., Mangold, Armin, Marcelli, Marcelo P., Mccune, Bruce, Messuti, Maria Ines, Michlig, Andrea, Gonzalez, Ricardo Miranda, Moncada, Bibiana, Naikatini, Alifereti, Nelsen, Matthew P., Ovstedal, Dag O., Palice, Zdenek, Papong, Khwanruan, Parnmen, Sittiporn, Perez-Ortega, Sergio, Printzen, Christian, Rico, Victor J., Plata, Eimy Rivas, Robayo, Javier, Rosabal, Dania, Ruprecht, Ulrike, Allen, Noris Salazar, Sancho, Leopoldo, De Jesus, Luciana Santos, Vieira, Tamires Santos, Schultz, Matthias, Seaward, Mark R. D., Serusiaux, Emmanuel, Schmitt, Imke, Sipman, Harrie J. M., Sohrabi, Mohammad, Søchting, Ulrik, Søgaard, Majbrit Zeuthen, Sparrius, Laurens B., Spielmann, Adriano, Spribille, Toby, Sutjaritturakan, Jutarat, Thammathaworn, Achra, Thell, Arne, Thor, Goeran, Thues, Holger, Timdal, Einar, Truong, Camille, Tuerk, Roman, Umana Tenorio, Loengrin, Upreti, Dalip K., Van den Boom, Pieter, Vivas Rebuelta, Mercedes, Wedin, Mats, Will-Wolf, Susan, Wirth, Volkmar, Wirtz, Nora, Yahr, Rebecca, Yeshitela, Kumelachew, Ziemmeck, Frauke, Wheeler, Tim, and Lücking, Robert

Subjects
Darwin declaration, taxonomy, taxonomic impediment, Encyclopedia of Life, lichens, Global Taxonomy Initiative
Published
2011

11. Charcotiana and Amundsenia, two new genera in Teloschistaceae (lichenized Ascomycota, subfamily Xanthorioideae) hosting two new species from continental Antarctica, and Austroplaca frigida, a new name for a continental Antarctic species

Author

Ulrik Søchting, Patrik Frödén, Rod Seppelt, Sergio Pérez-Ortega, Ulf Arup, Miris Castello, Isaac Garrido-Benavent, Leopoldo G. Sancho, Asunción de los Ríos Murillo, Sochting, Ulrik, Garrido Benavent, Isaac, Seppelt, Rod, Castello, Miri, Perez Ortega, Sergio, De Los Rios Murillo, Asuncion, Sancho, Leopoldo Garcia, Froden, Patrik, and Arup, Ulf

Subjects
Subfamily, Charcotiana antarctica, lichen, Amundsenia austrocontinentali, Amundsenia austrocontinentalis, Caloplaca, Caloplaca frigida, Genus, Botany, Lichen, lichens, Ecology, Evolution, Behavior and Systematics, molecular phylogeny, Charcotiana, biology, Ascomycota, Ecology, biology.organism_classification, bipolar distribution, Amundsenia approximata, Molecular phylogenetics, Caloplaca approximata, ITS, Teloschistaceae
Abstract

Based on a combined three locus analysis two new genera,CharcotianaandAmundsenia,are proposed in the lichen familyTeloschistaceae, subfamilyXanthorioideae.Charcotianaincludes the new speciesC. antarctica, which is known only from continental Antarctica. The bipolar genusAmundseniaincludes the new speciesA. austrocontinentalis, which is also known only from continental Antarctica, and the Arctic speciesCaloplaca approximatawhich is here combined into the new genus. The two new genera are phylogenetically distinct, but poor in morphological characters; the new species consist mainly of minute apothecia in cracks of rocks located in the climatically harshest regions of the Antarctic. They are somewhat similar to another continental Antarctic species,Austroplaca frigida,which is described as a new name based on the illegitimate nameCaloplaca frigidaSøchting. The distribution of the four species is mapped.

Published
2014

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