• Although not all scientists were convinced that the matter of the basal angiosperm was settled, the response was dramatic with one morphologist heralding the identification of a basal angiosperm as "the answer" ( 15 ), even though it conflicted with his own previous analyses ( 16 ). (pnas.org)
  • Results: We have considered all basal angiosperm families for general characteristics important for experimental systems, including availability to the scientific community, growth habit, and membership in a large basal angiosperm group that displays a wide spectrum of phenotypic diversity. (7thspace.com)
  • These studies generally have focused on the basal angiosperm splits, and more comprehensive taxon sampling is necessary to address backbone relationships throughout the angiosperms. (biomedcentral.com)
  • The angiosperms are those plants whose seeds develop within a surrounding layer of plant tissue, called the carpel, with seeds attached around the margins. (encyclopedia.com)
  • The enclosed seeds and the presence of carpels distinguish angiosperms from their closest living relatives, the gymnosperms , in which the seed is not enclosed within a fruit, but rather sits exposed to the environment. (encyclopedia.com)
  • Some defining characteristics of angiosperms include flowers, carpels, and the presence of endosperm, a nutritive substance found in seeds, produced via a second fertilization event. (encyclopedia.com)
  • Using a visualization technique known as synchrotron radiation X-ray tomographic microscopy - which allows researchers to examine the internal features of delicate fossils in a non-destructive way - the authors analyzed more than 250 mature seeds encompassing roughly 75 angiosperm taxa, some of which had the seed embryo fully preserved. (psi.ch)
  • However, the embryo to seed ratio in the fossil seeds is much smaller than in seeds of most living angiosperms and an order of magnitude smaller than has been hypothesized for the ancestral angiosperm embryo based on studies of living plants. (psi.ch)
  • Seed dormancy would have ensured that the seeds of early angiosperms could survive until conditions for germination and seedling establishment were favorable, lead author Else Marie Friis said. (psi.ch)
  • The angiosperm seeds are those that are concealed within the fruit. (differencebetween.net)
  • 1. The angiosperms are seed bearing plants whose seeds are contained in an ovary inside a fruit. (differencebetween.net)
  • From that time onwards, so long as these Gymnosperms were, as was usual, reckoned as dicotyledonous flowering plants, the term Angiosperm was used antithetically by botanical writers, but with varying limitation, as a group-name for other dicotyledonous plants. (wikisource.org)
  • Angiosperms, or flowering plants, constitute the most diverse and numerous group of land plants, and the most commercially important, producing an estimated 200,000 small molecule metabolites through conserved primary metabolism and divergent secondary pathways. (escholarship.org)
  • Flowering plants, or angiosperms, produce many compounds that are not directly related to growth and development. (blogspot.com)
  • Angiosperms are commonly called "flowering plants. (whyunlike.com)
  • The new Angiosperms-353 panel enriches 100's of single-copy genes orthologous across all angiosperms (flowering plants). (arborbiosci.com)
  • Combining the flexible hybridization power of in-solution target capture with an expertly selected set of orthologous locus sequences, this new probe set has been demonstrated to enrich hundreds of putatively single-copy protein-coding genes across a broad range of angiosperms (flowering plants). (arborbiosci.com)
  • Although most studies show that Amborella and Nymphaeales are more basal than Austrobaileyales, and all three are more basal than the mesangiosperms, there is significant molecular evidence in favor of two different trees, one in which Amborella is sister to the rest of the angiosperms, and one in which a clade of Amborella and Nymphaeales is in this position. (wikipedia.org)
  • Only 2 years ago it seemed that a consensus, based on molecular data, would emerge on angiosperm relationships within 10 years ( 14 ). (pnas.org)
  • Molecular data have had an enormous impact on angiosperm phylogenetic hypotheses (e.g. [ 1 - 5 ]), and the abundance of new sequence data provides the potential for further resolving angiosperm relationships. (biomedcentral.com)
  • Still, molecular phylogenetic studies across all angiosperms have utilized only a small fraction of the available sequence data. (biomedcentral.com)
  • In this study, we take advantage of these new data to explore the relationship between recombination rate, genome structure, and patterns of molecular evolution throughout angiosperms in order to better characterize the broad macroevolutionary patterns of recombination rate variation and its possible consequences for genome evolution. (biomedcentral.com)
  • We also collected associated soil to measure the effect of soil conditions on AMF colonization Results Thick-root magnoliids showed less variation in root traits along root orders than more-derived angiosperm groups. (osti.gov)
  • article{osti_1247638, title = {Phylogenetically structured traits in root systems influence arbuscular mycorrhizal colonization in woody angiosperms}, author = {Valverde-Barrantes, Oscar J. and Horning, Amber L. and Smemo, Kurt A. and Blackwood, Christopher B.}, abstractNote = {In this study, there is little quantitative information about the relationship between root traits and the extent of arbuscular mycorrhizal fungi (AMF) colonization. (osti.gov)
  • We then compared the relationships between these traits found among ferns with modelled relationships that assume vein and stomatal density respond passively to epidermal cell expansion, and with those previously observed in angiosperms. (edu.au)
  • Testing the impact of morphological rate heterogeneity on ancestral state reconstruction of five floral traits in angiosperms. (sauquetlab.org)
  • Here, we will discuss the different traits of angiosperms and gymnosperms. (whyunlike.com)
  • Using a motif-based system developed for this study to identify canonical CEP peptide domains, a total of 916 CEP genes and 1,223 CEP domains were found in angiosperms and for the first time in gymnosperms. (nih.gov)
  • This defines a narrow band for the emergence of CEP genes in plants, from the divergence of lycophytes to the angiosperm/gymnosperm split. (nih.gov)
  • Nuclear rRNA genes (rDNA) in angiosperms are arranged in long tandem repeating units, much like those of other higher eukaryotes. (cnki.com.cn)
  • Key angiosperm innovations that were lost include the entire repertoire of stomatal genes(3), genes involved in the synthesis of terpenoids and ethylene signalling, and genes for ultraviolet protection and phytochromes for far-red sensing. (ugent.be)
  • Here we explore daily variations in the expression of clock genes in the marine angiosperm Posidonia oceanica along its bathymetric distribution, where plants are exposed to a natural cline of light and temperature. (peerj.com)
  • Based on evidence from living and fossil plants, the earliest angiosperms are usually thought to have had small stature. (psi.ch)
  • Funk, J.L. and Amatangelo, K.L. (2013) Physiological Mechanisms Drive Differing Foliar Calcium Content in Ferns and Angiosperms. (scirp.org)
  • i) exclusive to the angiosperms, (ii) a conserved mechanism that evolved in the common ancestor of ferns and angiosperms, or (iii) has evolved continuously over time. (edu.au)
  • The different general relationships between vein density and stomatal density in ferns and angiosperms suggests the groups have different optimum balances between the production of vein tissue dedicated to water supply and stomatal tissue for gas exchange. (edu.au)
  • This absence of a link is explained because angiosperms have xylem tissue that specifically functions in either mechanical strength or water transport. (wiley.com)
  • The sampling strategies of phylogenetic studies across angiosperms demonstrate a tradeoff between taxonomic sampling and the number of gene sequences per taxon. (biomedcentral.com)
  • These distinguishing characteristics taken together have made the angiosperms the most diverse and numerous land plants and the most commercially important group to humans. (thefullwiki.org)
  • This is important because it suggests that while early angiosperms may have had many characteristics of modern weedy early colonizers, they would have been unable to match the very rapid germination of the many different kinds of angiosperm herbs that evolved later and that ultimately proved even more effective in exploiting ephemeral ecological opportunities," Friis said. (psi.ch)
  • Here we report the genome of Zostera marina (L.), the first, to our knowledge, marine angiosperm to be fully sequenced. (ugent.be)
  • By analyzing whole-genome bisulfite sequencing data in a phylogenetic context, it becomes clear that there is extensive variation throughout angiosperms in gene body DNA methylation, euchromatic silencing of transposons and repeats, as well as silencing of heterochromatic transposons. (biomedcentral.com)
  • Conifer tracheid diameters are biomechanically constrained because these cells must perform the dual function of conducting water and providing structural support to woody tissues, whereas vessels need not perform the latter function in angiosperm wood. (plantphysiol.org)
  • The basic angiosperm form is woody or herbaceous. (academic.ru)
  • the vast majority of the world's crops are angiosperms, as are most natural clothing fibers. (tolweb.org)