ORCID Profile
0000-0001-8009-1237
Current Organisation
Universidad Complutense de Madrid
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Publisher: John Libbey Eurotext
Date: 09-2015
Publisher: Wiley
Date: 24-08-2015
DOI: 10.1111/JDV.13258
Publisher: Informa UK Limited
Date: 04-11-2016
Publisher: Wiley
Date: 06-05-2016
Publisher: Springer Science and Business Media LLC
Date: 05-09-2017
DOI: 10.1007/S00442-017-3943-Z
Abstract: The extent of specialization/generalization continuum in fruit-frugivore interactions at the in idual level remains poorly explored. Here, we investigated the interactions between the Neotropical treelet Miconia irwinii (Melastomataceae) and its avian seed dispersers in Brazilian c o rupestre. We built an in idual-based network to derive plant degree of interaction specialization regarding disperser species. Then, we explored how intraspecific variation in interaction niche breadth relates to fruit availability on in idual plants in varying densities of fruiting conspecific neighbors, and how these factors affect the quantity of viable seeds dispersed. We predicted broader interaction niche breadths for in iduals with larger fruit crops in denser fruiting neighborhoods. The downscaled network included nine bird species and 15 plants, which varied nearly five-fold in their degree of interaction specialization. We found positive effects of crop size on visitation and fruit removal rates, but not on degree of interaction specialization. Conversely, we found that an increase in the density of conspecific fruiting neighbors both increased visitation rate and reduced plant degree of interaction specialization. We suggest that tracking fruit-rich patches by avian frugivore species is the main driver of density-dependent intraspecific variation in plants' interaction niche breadth. Our study shed some light on the overlooked fitness consequences of intraspecific variation in interaction niches by showing that in iduals along the specialization/generalization continuum may have their seed dispersed with similar effectiveness. Our study exemplifies how in idual-based networks linking plants to frugivore species that differ in their seed dispersal effectiveness can advance our understanding of intraspecific variation in the outcomes of fruit-frugivore interactions.
Publisher: Wiley
Date: 13-08-2016
DOI: 10.1111/JDV.13873
Publisher: Wiley
Date: 24-06-2015
Publisher: Wiley
Date: 31-08-2015
DOI: 10.1111/JDV.13287
Publisher: Springer Science and Business Media LLC
Date: 09-01-2023
Publisher: Springer Science and Business Media LLC
Date: 12-10-2022
DOI: 10.1038/S41586-022-05292-X
Abstract: Soils are the foundation of all terrestrial ecosystems
Publisher: Cold Spring Harbor Laboratory
Date: 05-03-2022
DOI: 10.1101/2022.03.04.483030
Abstract: Mast cells (MCs) are tissue-resident immune cells that are classified into two subsets in mice: connective tissue-type MCs (CTMCs) and mucosal type MCs (MMCs). Although both CTMCs and MMCs can be induced from bone marrow (BM)-derived hematopoietic stem cells (HSCs) in vitro, recent research on MC ontogeny has revealed that MMCs are maintained with a supply of BM-derived HSCs, while CTMCs are maintained locally by self-proliferation in steady state in vivo . However, how CTMCs, such as skin MCs, are maintained in an inflammatory state such as atopic dermatitis (AD) remains to be fully elucidated. Methods: MC903-induced AD model was used to identify BM-derived MCs in the skin. The infiltration and proliferation of MCs were evaluated by flow cytometry using CD45.1 BM-chimera mice and parabiosis. BM-derived MCs in AD-like skin were compared to resident MCs (rMCs) in gene expressions by RNA sequence analysis. The fate of BM-derived MCs in AD-like skin was investigated for expressions of CTMC markers and responses to compound 48/80. Results: In AD-like skin, significant increase of both rMCs and BM-derived MCs was observed. BM-derived MCs were derived from circulating MC progenitors (MCps) and were distinguished from rMCs by integrinβ7 expression, which was gradually downregulated in the skin. RNA sequence analysis showed that integrinβ7 + MCs in the skin shared characteristics of both MMC and CTMC. Integrinβ7 + MCs proliferated in situ and acquired the CTMC phenotypes in AD-like skin. Conclusions: Skin MCs are maintained in AD-like skin by both local proliferation of rMCs and infiltration roliferation of BM-derived MCs, which differentiate toward CTMC in the skin.
Publisher: Medical Journals Sweden AB
Date: 2015
Publisher: John Libbey Eurotext
Date: 09-2016
Publisher: Springer Science and Business Media LLC
Date: 09-11-2017
Publisher: Springer Science and Business Media LLC
Date: 21-09-2014
DOI: 10.1038/NI.2992
Abstract: It remains largely unclear how antigen-presenting cells (APCs) encounter effector or memory T cells efficiently in the periphery. Here we used a mouse contact hypersensitivity (CHS) model to show that upon epicutaneous antigen challenge, dendritic cells (DCs) formed clusters with effector T cells in dermal perivascular areas to promote in situ proliferation and activation of skin T cells in a manner dependent on antigen and the integrin LFA-1. We found that DCs accumulated in perivascular areas and that DC clustering was abrogated by depletion of macrophages. Treatment with interleukin 1α (IL-1α) induced production of the chemokine CXCL2 by dermal macrophages, and DC clustering was suppressed by blockade of either the receptor for IL-1 (IL-1R) or the receptor for CXCL2 (CXCR2). Our findings suggest that the dermal leukocyte cluster is an essential structure for elicitating acquired cutaneous immunity.
Publisher: Rockefeller University Press
Date: 13-11-2006
DOI: 10.1084/JEM.20061289
Abstract: After induction in secondary lymphoid organs, a subset of antibody-secreting cells (ASCs) homes to the bone marrow (BM) and contributes to long-term antibody production. The factors determining secondary lymphoid organ residence versus BM tropism have been unclear. Here we demonstrate that in mice treated with FTY720 or that lack sphingosine-1-phosphate (S1P) receptor-1 (S1P1) in B cells, IgG ASCs are induced and localize normally in secondary lymphoid organs but they are reduced in numbers in blood and BM. Many IgG ASCs home to BM on day 3 of the secondary response and day 3 splenic ASCs exhibit S1P responsiveness, whereas the cells remaining at day 5 are unable to respond. S1P1 mRNA abundance is higher in ASCs isolated from blood compared to spleen, whereas CXCR4 expression is lower. Blood ASCs also express higher amounts of Kruppel-like factor (KLF)2, a regulator of S1P1 gene expression. These findings establish an essential role for S1P1 in IgG plasma cell homing and they suggest that differential regulation of S1P1 expression in differentiating plasma cells may determine whether they remain in secondary lymphoid organs or home to BM.
Publisher: Oxford University Press (OUP)
Date: 06-06-2016
DOI: 10.1111/BJD.14542
Publisher: Springer Science and Business Media LLC
Date: 12-12-2022
DOI: 10.1186/S40168-022-01405-W
Abstract: Little is known about the global distribution and environmental drivers of key microbial functional traits such as antibiotic resistance genes (ARGs). Soils are one of Earth’s largest reservoirs of ARGs, which are integral for soil microbial competition, and have potential implications for plant and human health. Yet, their ersity and global patterns remain poorly described. Here, we analyzed 285 ARGs in soils from 1012 sites across all continents and created the first global atlas with the distributions of topsoil ARGs. We show that ARGs peaked in high latitude cold and boreal forests. Climatic seasonality and mobile genetic elements, associated with the transmission of antibiotic resistance, were also key drivers of their global distribution. Dominant ARGs were mainly related to multidrug resistance genes and efflux pump machineries. We further pinpointed the global hotspots of the ersity and proportions of soil ARGs. Together, our work provides the foundation for a better understanding of the ecology and global distribution of the environmental soil antibiotic resistome.
Publisher: S. Karger AG
Date: 16-12-2014
DOI: 10.1159/000370304
Abstract: Rhinoplasty is a plastic surgery procedure to reconstruct the nose. Silicone alloplastic materials are most widely used as implants for rhinoplasty, but calcification on the surface occurs with long-term usage. Herein, we report a case of gruel-like calcification approximately 50 years after silicone implant rhinoplasty. In this case, calcification on the silicone surface might have transformed into gruel-like deposits, which presented as a subcutaneous mass at the dorsal area of the nose. The precise mechanism is unclear a pH change in the tissue might have occurred during the process of inflammation, leading to the dissolution of calcified deposits.
Publisher: John Libbey Eurotext
Date: 09-2015
Publisher: Springer Science and Business Media LLC
Date: 05-2023
Publisher: American Association for the Advancement of Science (AAAS)
Date: 09-07-2021
Abstract: This study provides new insights into how the soil microbiome of urban greenspaces differs from surrounding natural ecosystems.
Publisher: John Libbey Eurotext
Date: 07-2017
Publisher: American Association for the Advancement of Science (AAAS)
Date: 15-03-2019
Abstract: Resident tissue macrophages (RTMs) reside in various tissue-specific niches during development. They evince microenvironment-directed phenotypes that support host defense and tissue homeostasis. Chakarov et al. used single-cell RNA sequencing and fate-mapping of murine lung RTMs to interrogate RTM-subset heterogeneity, interrelationships, and ontogeny (see the Perspective by Mildner and Yona). In addition to alveolar macrophages, they identified two different interstitial macrophage populations. One population mostly abutted nerve fibers the other population preferentially localized near blood vessels and appeared to support vessel integrity and inhibit inflammatory cell infiltration into tissues. Science , this issue p. eaau0964 see also p. 1154
Publisher: Wiley
Date: 04-11-2015
DOI: 10.1111/JDV.13494
Publisher: Wiley
Date: 15-06-2022
DOI: 10.1002/SKI2.124
Publisher: Wiley
Date: 07-2023
DOI: 10.1002/AJB2.16186
Abstract: Flower damage caused by florivores often has negative consequences for plant reproduction. However, the factors affecting plant–florivore interactions are still poorly understood, especially the role of abiotic factors and interspecific variation in florivory within ecosystems. Thus, the patterns of florivory levels and its consequences for plant communities need to be investigated further. We assessed the influence of abiotic factors related to climatic seasonality, of phylogenetic relationships among plants, and of functional attributes associated with attractiveness to pollinators on florivory incidence and intensity in the Pantanal, the world's largest tropical wetland. Between December 2020 and November 2021, the percentage of flowers attacked (incidence) and petal area removed (intensity) by florivores were examined in 51 species from 25 families, considering flowering season, the substrate where the plants occur, and flower attributes as potentially determining factors on florivory levels. Phylogeny and environmental factors did not have a significant influence on florivory. The only determinant of interspecific variation in florivory incidence and intensity was flower size, where larger flowers experienced higher florivory levels regardless of season and substrate, while flower arrangement and color were not significant factors. Our study is one of the first to estimate the community‐wide effects of biotic and abiotic factors on both the incidence and the intensity of florivory. The magnitude of this plant–florivore interaction may reduce reproductive success and entail selective pressures on plant attractiveness to pollinators.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 25-11-2022
Abstract: Grazing represents the most extensive use of land worldwide. Yet its impacts on ecosystem services remain uncertain because pervasive interactions between grazing pressure, climate, soil properties, and bio ersity may occur but have never been addressed simultaneously. Using a standardized survey at 98 sites across six continents, we show that interactions between grazing pressure, climate, soil, and bio ersity are critical to explain the delivery of fundamental ecosystem services across drylands worldwide. Increasing grazing pressure reduced ecosystem service delivery in warmer and species-poor drylands, whereas positive effects of grazing were observed in colder and species-rich areas. Considering interactions between grazing and local abiotic and biotic factors is key for understanding the fate of dryland ecosystems under climate change and increasing human pressure.
Publisher: Elsevier BV
Date: 03-2022
No related grants have been discovered for ALBERTO L TEIXIDO.