Coexistence of predators in time: Effects of season and prey availability on species activity within a Mediterranean carnivore guild

The degree of coexistence among predators can determine the structure of ecological communities. Niche partitioning is a common strategy applied by species to enhance their coexistence. Diet, habitat, or time use can be responsible for segregation among carnivore species, the latter factor being the least studied in Mediterranean ecosystems. Terrestrial medium‐sized carnivores (i.e., mesocarnivores) carry out important functions in ecosystems, and identifying their interactions is essential for their conservation. In this study, we explore the activity of a terrestrial mesocarnivore guild in order to determine seasonal differences in daily activity patterns of competitors and prey. We also investigate how the abundance of a common mesocarnivore prey in the region, small mammals, influences the activity of predators. During a year, camera trap devices (n = 18) were installed in Montseny Natural Park (Catalan Pre‐Coastal Range, North‐East Iberian Peninsula), a region that hosts five mesocarnivore species. Camera trapping detections were used to estimate their daily activity patterns and corresponding overlaps. We also surveyed small mammal plots (n = 5) in order to calculate prey abundance and test its effect on the relative activity of each carnivore species. Despite all target mesocarnivores are mainly nocturnal, the activity overlap among them varies according to species particularities and season. Red fox (Vulpes vulpes) appears as a generalist species in terms of time use, whereas stone marten (Martes foina) and genet (Genetta genetta) show the most similar activity patterns and both of them seem to be positively influenced by small mammal abundance. Overall, the diversity found in the way mesocarnivore species use time could facilitate their coexistence. Despite activity pattern similarities among carnivore species should not be directly translated to negative interactions, they can have a strong influence in habitat and resource‐limited ecosystems. Therefore, activity overlaps should be taken into account when discussing wildlife management actions

Redundant regulation of meristem identity and plant architecture by FRUITFULL, APETALA1 and CAULIFLOWER

The transition from vegetative to reproductive phases during Arabidopsis development is the result of a complex interaction of environmental and endogenous factors. One of the key regulators of this transition is LEAFY (LFY), whose threshold levels of activity are proposed to mediate the initiation of flowers. The closely related APETALA1 (AP1) and CAULIFLOWER (CAL) meristem identity genes are also important for flower initiation, in part because of their roles in upregulating LFY expression. We have found that mutations in the FRUITFULL (FUL) MADS-box gene, when combined with mutations in AP1 and GAL, lead to a dramatic non-flowering phenotype in which plants continuously elaborate leafy shoots in place of flowers. We demonstrate that this phenotype is caused both by the lack of LFY upregulation and by the ectopic expression of the TERMINAL FLOWER1 (TFL1) gene. Our results suggest that the FUL, AP1 and CAL genes act redundantly to control inflorescence architecture by affecting the domains of LFY and TFL1 expression as well as the relative levels of their activities

The FRUITFULL MADS-box gene mediates cell differentiation during Arabidopsis fruit development

Fruit morphogenesis is a process unique to flowering plants, and yet little is known about its developmental control, Following fertilization, fruits typically undergo a dramatic enlargement that is accompanied by differentiation of numerous distinct cell types. We have identified a mutation in Arabidopsis called fruitfull (ful-1), which abolishes elongation of the silique after fertilization. The ful-1 mutation is caused by the insertion of a DsE transposable enhancer trap element into the 5' untranslated leader of the AGL8 MADS-box gene. beta-glucuronidase (GUS) reporter gene expression in the enhancer trap line is observed specifically in all cell layers of the valve tissue, but not in the replum, the septum or the seeds, and faithfully mimics RNA in situ hybridization data reported previously, The lack of coordinated growth of the fruit tissues leads to crowded seeds, a failure of dehiscence and, frequently, the premature rupture of the carpel valves, The primary defect of ful-1 fruits is within the valves, whose cells fail to elongate and differentiate. Stomata, which are frequent along the epidermis of wild-type valves, are completely eliminated in the ful mutant valves. In addition to the effect on fruit development, ful cauline leaves are broader than those of wild type and show a reduction in the number of internal cell layers. These data suggest that AGL8/FUL regulates the transcription of genes required for cellular differentiation during fruit and leaf development

Earth’s Rotation: A Challenging Problem in Mathematics and Physics

A suitable knowledge of the orientation and motion of the Earth in space is a common need in various fields. That knowledge has been ever necessary to carry out astronomical observations, but with the advent of the space age, it became essential for making observations of satellites and predicting and determining their orbits, and for observing the Earth from space as well. Given the relevant role it plays in Space Geodesy, Earth rotation is considered as one of the three pillars of Geodesy, the other two being geometry and gravity. Besides, research on Earth rotation has fostered advances in many fields, such as Mathematics, Astronomy and Geophysics, for centuries. One remarkable feature of the problem is in the extreme requirements of accuracy that must be fulfilled in the near future, about a millimetre on the tangent plane to the planet surface, roughly speaking. That challenges all of the theories that have been devised and used to-date; the paper makes a short review of some of the most relevant methods, which can be envisaged as milestones in Earth rotation research, emphasizing the Hamiltonian approach developed by the authors. Some contemporary problems are presented, as well as the main lines of future research prospected by the International Astronomical Union/International Association of Geodesy Joint Working Group on Theory of Earth Rotation, created in 2013.This work has been partially supported by the Spanish government under Grants AYA2010-22039-C02-01 and AYA2010-22039-C02-02 from Ministerio de Economía y Competitividad (MINECO), the University of Alicante under Grant GRE11-08 and the Generalitat Valenciana, Grant GV/2014/072

Estructura sanitaria de atención al tabaquismo

El presente artículo trata de analizar la necesidad de generar una estructura sanitaria de atención al tabaquismo en los distintos departamentos de salud, dependientes de la red pública sanitaria. Esta estructura cobra fuerza y llega a un mayor número de sujetos si se asienta sobre la Atención Primaria de salud, articulándose alrededor de las consultas específicas de tabaquismo en los distintos centros de Salud. Estas consultas deben contar como mínimo con un médico y una enfermera que se dediquen especialmente a atender la consulta al menos 4 horas a la semana. Aun siendo la Atención Primaria la principal puerta de entrada de los pacientes, no podemos descartar el papel de otras unidades o servicios como, medicina Preventiva, los servicios de Neumología o las Unidades de Conductas Adictivas, que también deben hacer un papel importante a la hora de su interrelación. Con todo esto hay que establecer una correcta coordinación entre los distintos servicios, consultas y unidades, sumando a ellas los recursos de Salud Pública e incluso el apoyo que se pueda ofrecer desde distintos ayuntamientos y otras administraciones no sanitarias. Al contar con una estructura definida y una organización coordinada se puede llegar al máximo número de pacientes, además de realizar otras tareas como la prevención o incluso la investigación en este campo, por parte de personas que conozcan toda la problemática de los fumadores. A pesar de los documentos previos, llega la hora de que los distintos gobiernos tanto a nivel autonómico como estatal, consensúen y establezcan un modelo de Atención sanitaria al tabaquismo para todo el Estado español. En este trabajo, aparte de presentar nuestro proyecto, ofrecemos los resultados preliminares que nos indica que nuestra experiencia es efectiva y eficiente en nuestro Departamento de Salud cuando se compara con otros trabajos. Esperamos que con el seguimiento aportemos datos más concluyentes

Freshness and Reactivity Analysis in Globally Asynchronous Locally Time-Triggered Systems

International audienceCritical embedded systems are often designed as a set of real-time tasks, running on shared computing modules, and communicating through networks. Because of their critical nature, such systems have to meet timing properties. To help the designers to prove the correctness of their system, the real-time systems community has developed numerous approaches for analyzing the worst case times either on the processors (e.g. worst case execution time of a task) or on the networks (e.g. worst case traversal time of a message). However, there is a growing need to consider the complete system and to be able to determine end-to-end properties. Such properties apply to a functional chain which describes the behavior of a sequence of functions, not necessarily hosted on a shared module, from an input until the production of an output. This paper explores two end-to-end properties: freshness and reactivity, and presents an analysis method based on Mixed Integer Linear Programming (MILP). This work is supported by the French National Research Agency within the Satrimmap project

Evolution of Class IITCPgenes in perianth bearing Piperales and their contribution to the bilateral calyx in Aristolochia

[EN] Controlled spatiotemporal cell division and expansion are responsible for floral bilateral symmetry. Genetic studies have pointed to class II TCP genes as major regulators of cell division and floral patterning in model core eudicots. Here we study their evolution in perianth-bearing Piperales and their expression in Aristolochia, a rare occurrence of bilateral perianth outside eudicots and monocots. The evolution of class II TCP genes reveals single-copy CYCLOIDEA-like genes and three paralogs of CINCINNATA (CIN) in early diverging angiosperms. All class II TCP genes have independently duplicated in Aristolochia subgenus Siphisia. Also CIN2 genes duplicated before the diversification of Saruma and Asarum. Sequence analysis shows that CIN1 and CIN3 share motifs with Cyclin proteins and CIN2 genes have lost the miRNA319a binding site. Expression analyses of all paralogs of class II TCP genes in Aristolochia fimbriata point to a role of CYC and CIN genes in maintaining differential perianth expansion during mid- and late flower developmental stages by promoting cell division in the distal and ventral portion of the limb. It is likely that class II TCP genes also contribute to cell division in the leaf, the gynoecium and the ovules in A. fimbriata.We thank Anny Garces Palacio, Sarita Munoz, Pablo Perez-Mesa (Universidad de Antioquia, Colombia), Cecilia Zumajo-Cardona (The New York Botanical Garden), Ana Berbel and Clara Ines Ortiz-Ramirez (Instituto de Biologia Molecular y Celular de Plantas, CSIC-UVP, Valencia, Spain) for photographs and assistance during laboratory work. We also thank Sebastian Gonzalez (Massachusetts College of Art and Design) for taking some of the photographs in Figs 1 and 2. Thanks are also due to the Dresden Junior Fellowship for allowing the visiting professor fellowship of NPM to the Technishe Universitat Dresden during 2019. This research was funded by Estrategia de Sostenibilidad 2018-2019 the Convocatoria Programaticas 2017-2018 (code 2017-16302), and the 2018-2019 Fondo de Internacionalizacion (code 201926230) from the Universidad de Antioquia, the iCOOP + 2016 grant COOPB20250 from Centro Superior de Investigacion Cientifica, CSIC and the ExpoSEED (H2020.MSCA-RISE2015-691109) EU grant.Pabon-Mora, N.; Madrigal, Y.; Alzate, JF.; Ambrose, BA.; Ferrandiz Maestre, C.; Wanke, S.; Neinhuis, C.... (2020). Evolution of Class IITCPgenes in perianth bearing Piperales and their contribution to the bilateral calyx in Aristolochia. New Phytologist. 228(2):752-769. https://doi.org/10.1111/nph.16719S7527692282Aguilar-Martínez, J. A., Poza-Carrión, C., & Cubas, P. (2007). Arabidopsis BRANCHED1Acts as an Integrator of Branching Signals within Axillary Buds. The Plant Cell, 19(2), 458-472. doi:10.1105/tpc.106.048934Almeida, J., Rocheta, M., & Galego, L. (1997). Genetic control of flower shape in Antirrhinum majus. Development, 124(7), 1387-1392. doi:10.1242/dev.124.7.1387Altschul, S. F., Gish, W., Miller, W., Myers, E. W., & Lipman, D. J. (1990). Basic local alignment search tool. Journal of Molecular Biology, 215(3), 403-410. doi:10.1016/s0022-2836(05)80360-2Ambrose, B. A., Lerner, D. R., Ciceri, P., Padilla, C. M., Yanofsky, M. F., & Schmidt, R. J. (2000). Molecular and Genetic Analyses of the Silky1 Gene Reveal Conservation in Floral Organ Specification between Eudicots and Monocots. Molecular Cell, 5(3), 569-579. doi:10.1016/s1097-2765(00)80450-5Ballester, P., Navarrete-Gómez, M., Carbonero, P., Oñate-Sánchez, L., & Ferrándiz, C. (2015). Leaf expansion in Arabidopsis is controlled by a TCP-NGA regulatory module likely conserved in distantly related species. Physiologia Plantarum, 155(1), 21-32. doi:10.1111/ppl.12327Bartlett, M. E., & Specht, C. D. (2011). Changes in expression pattern of the teosinte branched1- like genes in the Zingiberales provide a mechanism for evolutionary shifts in symmetry across the order. American Journal of Botany, 98(2), 227-243. doi:10.3732/ajb.1000246Bliss, B. J., Wanke, S., Barakat, A., Ayyampalayam, S., Wickett, N., Wall, P. K., … dePamphilis, C. W. (2013). Characterization of the basal angiosperm Aristolochia fimbriata: a potential experimental system for genetic studies. BMC Plant Biology, 13(1), 13. doi:10.1186/1471-2229-13-13Busch, A., & Zachgo, S. (2007). Control of corolla monosymmetry in the Brassicaceae Iberis amara. Proceedings of the National Academy of Sciences, 104(42), 16714-16719. doi:10.1073/pnas.0705338104Citerne, H. L., Reyes, E., Le Guilloux, M., Delannoy, E., Simonnet, F., Sauquet, H., … Damerval, C. (2016). Characterization ofCYCLOIDEA-like genes in Proteaceae, a basal eudicot family with multiple shifts in floral symmetry. Annals of Botany, 119(3), 367-378. doi:10.1093/aob/mcw219Corley, S. B., Carpenter, R., Copsey, L., & Coen, E. (2005). Floral asymmetry involves an interplay between TCP and MYB transcription factors in Antirrhinum. Proceedings of the National Academy of Sciences, 102(14), 5068-5073. doi:10.1073/pnas.0501340102Crawford, B. C. W., Nath, U., Carpenter, R., & Coen, E. S. (2004). CINCINNATA Controls Both Cell Differentiation and Growth in Petal Lobes and Leaves of Antirrhinum. Plant Physiology, 135(1), 244-253. doi:10.1104/pp.103.036368Cubas, P. (2002). Role of TCP genes in the evolution of morphological characters in angiosperms. Developmental Genetics and Plant Evolution, 247-266. doi:10.1201/9781420024982.ch13Cubas, P., Lauter, N., Doebley, J., & Coen, E. (1999). The TCP domain: a motif found in proteins regulating plant growth and development. The Plant Journal, 18(2), 215-222. doi:10.1046/j.1365-313x.1999.00444.xDamerval, C., Citerne, H., Conde e Silva, N., Deveaux, Y., Delannoy, E., Joets, J., … Nadot, S. (2019). Unraveling the Developmental and Genetic Mechanisms Underpinning Floral Architecture in Proteaceae. Frontiers in Plant Science, 10. doi:10.3389/fpls.2019.00018Damerval, C., Citerne, H., Le Guilloux, M., Domenichini, S., Dutheil, J., Ronse de Craene, L., & Nadot, S. (2013). Asymmetric morphogenetic cues along the transverse plane: Shift from disymmetry to zygomorphy in the flower of Fumarioideae. American Journal of Botany, 100(2), 391-402. doi:10.3732/ajb.1200376Damerval, C., Guilloux, M. L., Jager, M., & Charon, C. (2006). Diversity and Evolution ofCYCLOIDEA-Like TCP Genes in Relation to Flower Development in Papaveraceae. Plant Physiology, 143(2), 759-772. doi:10.1104/pp.106.090324Danisman, S., van der Wal, F., Dhondt, S., Waites, R., de Folter, S., Bimbo, A., … Immink, R. G. H. (2012). Arabidopsis Class I and Class II TCP Transcription Factors Regulate Jasmonic Acid Metabolism and Leaf Development Antagonistically. Plant Physiology, 159(4), 1511-1523. doi:10.1104/pp.112.200303Danisman, S., van Dijk, A. D. J., Bimbo, A., van der Wal, F., Hennig, L., de Folter, S., … Immink, R. G. H. (2013). Analysis of functional redundancies within the Arabidopsis TCP transcription factor family. Journal of Experimental Botany, 64(18), 5673-5685. doi:10.1093/jxb/ert337Doebley, J. (2004). The Genetics of Maize Evolution. Annual Review of Genetics, 38(1), 37-59. doi:10.1146/annurev.genet.38.072902.092425Doebley, J., Stec, A., & Gustus, C. (1995). teosinte branched1 and the origin of maize: evidence for epistasis and the evolution of dominance. Genetics, 141(1), 333-346. doi:10.1093/genetics/141.1.333Doebley, J., Stec, A., & Hubbard, L. (1997). The evolution of apical dominance in maize. Nature, 386(6624), 485-488. doi:10.1038/386485a0Efroni, I., Blum, E., Goldshmidt, A., & Eshed, Y. (2008). A Protracted and Dynamic Maturation Schedule UnderliesArabidopsisLeaf Development. The Plant Cell, 20(9), 2293-2306. doi:10.1105/tpc.107.057521Elomaa, P., Zhao, Y., & Zhang, T. (2018). Flower heads in Asteraceae—recruitment of conserved developmental regulators to control the flower-like inflorescence architecture. Horticulture Research, 5(1). doi:10.1038/s41438-018-0056-8Endress, P. K. (2012). The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms. The Botanical Review, 78(4), 345-397. doi:10.1007/s12229-012-9106-3Ferrándiz, C., Liljegren, S. J., & Yanofsky, M. F. (2000). Negative Regulation of the SHATTERPROOF Genes by FRUITFULL During Arabidopsis Fruit Development. Science, 289(5478), 436-438. doi:10.1126/science.289.5478.436Galego, L. (2002). Role of DIVARICATA in the control of dorsoventral asymmetry in Antirrhinum flowers. Genes & Development, 16(7), 880-891. doi:10.1101/gad.221002Gaudin, V., Lunness, P. A., Fobert, P. R., Towers, M., Riou-Khamlichi, C., Murray, J. A. H., … Doonan, J. H. (2000). The Expression of D-Cyclin Genes Defines Distinct Developmental Zones in Snapdragon Apical Meristems and Is Locally Regulated by the Cycloidea Gene. Plant Physiology, 122(4), 1137-1148. doi:10.1104/pp.122.4.1137González, F., & Pabón‐Mora, N. (2015). Trickery flowers: the extraordinary chemical mimicry of Aristolochia to accomplish deception to its pollinators. New Phytologist, 206(1), 10-13. doi:10.1111/nph.13328González, F., & Stevenson, D. W. (2000). Perianth development and systematics of Aristolochia. Flora, 195(4), 370-391. doi:10.1016/s0367-2530(17)30995-7Heery, D. M., Kalkhoven, E., Hoare, S., & Parker, M. G. (1997). A signature motif in transcriptional co-activators mediates binding to nuclear receptors. Nature, 387(6634), 733-736. doi:10.1038/42750Hileman, L. C. (2014). Trends in flower symmetry evolution revealed through phylogenetic and developmental genetic advances. Philosophical Transactions of the Royal Society B: Biological Sciences, 369(1648), 20130348. doi:10.1098/rstb.2013.0348Hoang, D. T., Chernomor, O., von Haeseler, A., Minh, B. Q., & Vinh, L. S. (2017). UFBoot2: Improving the Ultrafast Bootstrap Approximation. Molecular Biology and Evolution, 35(2), 518-522. doi:10.1093/molbev/msx281Horn, S., Pabón-Mora, N., Theuß, V. S., Busch, A., & Zachgo, S. (2015). Analysis of the CYC/TB1 class of TCP transcription factors in basal angiosperms and magnoliids. The Plant Journal, 81(4), 559-571. doi:10.1111/tpj.12750Howarth, D. G., & Donoghue, M. J. (2006). Phylogenetic analysis of the «ECE» (CYC/TB1) clade reveals duplications predating the core eudicots. Proceedings of the National Academy of Sciences, 103(24), 9101-9106. doi:10.1073/pnas.0602827103Howarth, D. G., Martins, T., Chimney, E., & Donoghue, M. J. (2011). Diversification of CYCLOIDEA expression in the evolution of bilateral flower symmetry in Caprifoliaceae and Lonicera (Dipsacales). Annals of Botany, 107(9), 1521-1532. doi:10.1093/aob/mcr049Kalyaanamoorthy, S., Minh, B. Q., Wong, T. K. F., von Haeseler, A., & Jermiin, L. S. (2017). ModelFinder: fast model selection for accurate phylogenetic estimates. Nature Methods, 14(6), 587-589. doi:10.1038/nmeth.4285Katoh, K. (2002). MAFFT: a novel method for rapid multiple sequence alignment based on fast Fourier transform. Nucleic Acids Research, 30(14), 3059-3066. doi:10.1093/nar/gkf436Kosugi, S., & Ohashi, Y. (2002). DNA binding and dimerization specificity and potential targets for the TCP protein family. The Plant Journal, 30(3), 337-348. doi:10.1046/j.1365-313x.2002.01294.xKoyama, T., Furutani, M., Tasaka, M., & Ohme-Takagi, M. (2006). TCP Transcription Factors Control the Morphology of Shoot Lateral Organs via Negative Regulation of the Expression of Boundary-Specific Genes inArabidopsis. The Plant Cell, 19(2), 473-484. doi:10.1105/tpc.106.044792Leppik, E. E. (1972). Origin and Evolution of Bilateral Symmetry in Flowers. Evolutionary Biology, 49-85. doi:10.1007/978-1-4757-0256-9_3Li, C., Potuschak, T., Colon-Carmona, A., Gutierrez, R. A., & Doerner, P. (2005). Arabidopsis TCP20 links regulation of growth and cell division control pathways. Proceedings of the National Academy of Sciences, 102(36), 12978-12983. doi:10.1073/pnas.0504039102Li, M., Zhang, D., Gao, Q., Luo, Y., Zhang, H., Ma, B., … Xue, Y. (2019). Genome structure and evolution of Antirrhinum majus L. Nature Plants, 5(2), 174-183. doi:10.1038/s41477-018-0349-9Li, S. (2015). The Arabidopsis thaliana TCP transcription factors: A broadening horizon beyond development. Plant Signaling & Behavior, 10(7), e1044192. doi:10.1080/15592324.2015.1044192Li, S., Gutsche, N., & Zachgo, S. (2011). The ROXY1 C-Terminal L**LL Motif Is Essential for the Interaction with TGA Transcription Factors    . Plant Physiology, 157(4), 2056-2068. doi:10.1104/pp.111.185199Lin, Y.-F., Chen, Y.-Y., Hsiao, Y.-Y., Shen, C.-Y., Hsu, J.-L., Yeh, C.-M., … Tsai, W.-C. (2016). Genome-wide identification and characterization ofTCPgenes involved in ovule development ofPhalaenopsis equestris. Journal of Experimental Botany, 67(17), 5051-5066. doi:10.1093/jxb/erw273Da Luo, Carpenter, R., Copsey, L., Vincent, C., Clark, J., & Coen, E. (1999). Control of Organ Asymmetry in Flowers of Antirrhinum. Cell, 99(4), 367-376. doi:10.1016/s0092-8674(00)81523-8Luo, D., Carpenter, R., Vincent, C., Copsey, L., & Coen, E. (1996). Origin of floral asymmetry in Antirrhinum. Nature, 383(6603), 794-799. doi:10.1038/383794a0Madrigal, Y., Alzate, J. F., & Pabón-Mora, N. (2017). Evolution and Expression Patterns of TCP Genes in Asparagales. Frontiers in Plant Science, 8. doi:10.3389/fpls.2017.00009Martín-Trillo, M., & Cubas, P. (2010). TCP genes: a family snapshot ten years later. Trends in Plant Science, 15(1), 31-39. doi:10.1016/j.tplants.2009.11.003MillerMA PfeifferW SchwartzT.2010.Creating the CIPRES Science Gateway for inference of large phylogenetic trees. [WWW document] URLhttp://www.phylo.org[accessed 5 June 2020].Mondragón-Palomino, M., & Trontin, C. (2011). High time for a roll call: gene duplication and phylogenetic relationships of TCP-like genes in monocots. Annals of Botany, 107(9), 1533-1544. doi:10.1093/aob/mcr059Nath, U., Crawford, B. C. W., Carpenter, R., & Coen, E. (2003). Genetic Control of Surface Curvature. Science, 299(5611), 1404-1407. doi:10.1126/science.1079354Navaud, O., Dabos, P., Carnus, E., Tremousaygue, D., & Hervé, C. (2007). TCP Transcription Factors Predate the Emergence of Land Plants. Journal of Molecular Evolution, 65(1), 23-33. doi:10.1007/s00239-006-0174-zNguyen, L.-T., Schmidt, H. A., von Haeseler, A., & Minh, B. Q. (2014). IQ-TREE: A Fast and Effective Stochastic Algorithm for Estimating Maximum-Likelihood Phylogenies. Molecular Biology and Evolution, 32(1), 268-274. doi:10.1093/molbev/msu300Pabón-Mora, N., Suárez-Baron, H., Ambrose, B. A., & González, F. (2015). Flower Development and Perianth Identity Candidate Genes in the Basal Angiosperm Aristolochia fimbriata (Piperales: Aristolochiaceae). Frontiers in Plant Science, 6. doi:10.3389/fpls.2015.01095Palatnik, J. F., Allen, E., Wu, X., Schommer, C., Schwab, R., Carrington, J. C., & Weigel, D. (2003). Control of leaf morphogenesis by microRNAs. Nature, 425(6955), 257-263. doi:10.1038/nature01958Parapunova, V., Busscher, M., Busscher-Lange, J., Lammers, M., Karlova, R., Bovy, A. G., … de Maagd, R. A. (2014). Identification, cloning and characterization of the tomato TCP transcription factor family. BMC Plant Biology, 14(1). doi:10.1186/1471-2229-14-157Peréz-Mesa, P., Ortíz-Ramírez, C. I., González, F., Ferrándiz, C., & Pabón-Mora, N. (2020). Expression of gynoecium patterning transcription factors in Aristolochia fimbriata (Aristolochiaceae) and their contribution to gynostemium development. EvoDevo, 11(1). doi:10.1186/s13227-020-00149-8Preston, J. C., & Hileman, L. C. (2012). Parallel evolution of TCP and B-class genes in Commelinaceae flower bilateral symmetry. EvoDevo, 3(1), 6. doi:10.1186/2041-9139-3-6Preston, J. C., Kost, M. A., & Hileman, L. C. (2009). Conservation and diversification of the symmetry developmental program among close relatives of snapdragon with divergent floral morphologies. New Phytologist, 182(3), 751-762. doi:10.1111/j.1469-8137.2009.02794.xRambautA.2014.FigTree: tree figure drawing tool. [WWW document] URLhttp://tree.bio.ed.ac.uk/software/figtree/.Rudall, P. J., & Bateman, R. M. (2004). Evolution of zygomorphy in monocot flowers: iterative patterns and developmental constraints. New Phytologist, 162(1), 25-44. doi:10.1111/j.1469-8137.2004.01032.xSargent, R. D. (2004). Floral symmetry affects speciation rates in angiosperms. Proceedings of the Royal Society of London. Series B: Biological Sciences, 271(1539), 603-608. doi:10.1098/rspb.2003.2644Suárez-Baron, H., Alzate, J. F., González, F., Ambrose, B. A., & Pabón-Mora, N. (2019). Genetic mechanisms underlying perianth epidermal elaboration of Aristolochia ringens Vahl (Aristolochiaceae). Flora, 253, 56-66. doi:10.1016/j.flora.2019.03.004Suárez-Baron, H., Pérez-Mesa, P., Ambrose, B. A., González, F., & Pabón-Mora, N. (2016). Deep into the Aristolochia Flower: Expression of C, D, and E-Class Genes inAristolochia fimbriata(Aristolochiaceae). Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 328(1-2), 55-71. doi:10.1002/jez.b.22686Viola, I. L., Uberti Manassero, N. G., Ripoll, R., & Gonzalez, D. H. (2011). The Arabidopsis class I TCP transcription factor AtTCP11 is a developmental regulator with distinct DNA-binding properties due to the presence of a threonine residue at position 15 of the TCP domain. Biochemical Journal, 435(1), 143-155. doi:10.1042/bj20101019Wang, J., Wang, Y., & Luo, D. (2010). LjCYC Genes Constitute Floral Dorsoventral Asymmetry in Lotus japonicus. Journal of Integrative Plant Biology, 52(11), 959-970. doi:10.1111/j.1744-7909.2010.00926.xYuan, Z., Gao, S., Xue, D.-W., Luo, D., Li, L.-T., Ding, S.-Y., … Zhang, D.-B. (2008). RETARDED PALEA1 Controls Palea Development and Floral Zygomorphy in Rice  . Plant Physiology, 149(1), 235-244. doi:10.1104/pp.108.128231Zhang, W., Kramer, E. M., & Davis, C. C. (2010). Floral symmetry genes and the origin and maintenance of zygomorphy in a plant-pollinator mutualism. Proceedings of the National Academy of Sciences, 107(14), 6388-6393. doi:10.1073/pnas.0910155107Zhang, W., Steinmann, V. W., Nikolov, L., Kramer, E. M., & Davis, C. C. (2013). Divergent genetic mechanisms underlie reversals to radial floral symmetry from diverse zygomorphic flowered ancestors. Frontiers in Plant Science, 4. doi:10.3389/fpls.2013.0030

Contributions of the Elasticity to the Precession of a Two-Layer Earth Model

We focus on the updating of a specific contribution to the precession of the equator in longitude, usually named as “second order.” It stems from the crossing of certain terms of the lunisolar gravitational potential. The IAU2006 precession theory assigns it the value of −46.8 mas/cy that was derived for a rigid Earth model. Instead of that model, we consider a two-layer Earth composed of an elastic mantle and a liquid core, working out the problem within the Hamiltonian framework developed by Getino and Ferrándiz. The targeted effect is obtained without further simplifying assumptions through Hori’s canonical perturbation method applied up to the second order of perturbation. On account of using a more realistic Earth model, the revised value of the second-order contribution is significantly changed and reaches −55.29 mas/cy. That variation of the second-order contribution is larger than other contributions included in IAU2006. It must be compensated with an increase of −8.51 mas/cy in the value of the lunisolar first-order component p’A of the precession of the equator rate, which is derived from the total rate by subtracting the remaining contributions accounted for in IAU2006 precession. The updating of the second-order contribution implies that the p’A parameter has to be changed, from 5040684.593 to 5040693.104 mas/cy in absence of potential revisions of other contributions. It entails a proportional variation of Earth’s dynamical ellipticity Hd, for which the estimation associated with IAU2006, 0.00327379448, should be updated to 0.00327380001, about 1.7 ppm larger.This research has been partially supported by the Spanish government MINECO projects AYA2010-22039-C02-02 and AYA2016-79775-P (AEI/FEDER, UE)

The mechanism of hydration of MgO-hydromagnesite blends

The hydration of reactive periclase (MgO) in the presence of hydromagnesite (Mg5(CO3)4(OH)2·4H2O) was investigated by a variety of physical and chemical techniques. Hydration of pure MgO-water mixtures gave very weak pastes of brucite (Mg(OH)2), but hydration of MgO-hydromagnesite blends gave pastes which set quickly and gave compressive strengths of potential interest for construction applications. The strengths of the blends increased with hydration time at least up to 28 days, and were not significantly decreased by increasing the hydromagnesite content up to 30%. Raman spectroscopy suggests that an amorphous phase, of composition between that of brucite, hydromagnesite and water, may form. Small amounts of calcite also form due to CaO in the MgO source. Thermodynamic calculations imply that the crystalline phase artinite (MgCO3·Mg(OH)2·3H2O) should be the stable product in this system, but it is not observed by either XRD or FTIR techniques, which suggests that its growth may be kinetically hindered

Contributions of the Elasticity to the Precession of a Two-Layer Earth Model

We focus on the updating of a specific contribution to the precession of the equator in longitude, usually named as “second order.” It stems from the crossing of certain terms of the lunisolar gravitational potential. The IAU2006 precession theory assigns it the value of −46.8 mas/cy that was derived for a rigid Earth model. Instead of that model, we consider a two-layer Earth composed of an elastic mantle and a liquid core, working out the problem within the Hamiltonian framework developed by Getino and Ferrándiz. The targeted effect is obtained without further simplifying assumptions through Hori’s canonical perturbation method applied up to the second order of perturbation. On account of using a more realistic Earth model, the revised value of the second-order contribution is significantly changed and reaches −55.29 mas/cy. That variation of the second-order contribution is larger than other contributions included in IAU2006. It must be compensated with an increase of −8.51 mas/cy in the value of the lunisolar first-order component p’A of the precession of the equator rate, which is derived from the total rate by subtracting the remaining contributions accounted for in IAU2006 precession. The updating of the second-order contribution implies that the p’A parameter has to be changed, from 5040684.593 to 5040693.104 mas/cy in absence of potential revisions of other contributions. It entails a proportional variation of Earth’s dynamical ellipticity Hd, for which the estimation associated with IAU2006, 0.00327379448, should be updated to 0.00327380001, about 1.7 ppm larger.This research has been partially supported by the Spanish government MINECO projects AYA2010-22039-C02-02 and AYA2016-79775-P (AEI/FEDER, UE)