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Articles 1 - 23 of 23
Full-Text Articles in Plant Sciences
Rehabilitation Of Mining Sites Using Diazotrophic Bacteria And Gramineous Associations, S Mercky, R Pineau, E Navarro, J M. Sarrailh
Rehabilitation Of Mining Sites Using Diazotrophic Bacteria And Gramineous Associations, S Mercky, R Pineau, E Navarro, J M. Sarrailh
IGC Proceedings (1997-2023)
Degradation of mining sites resulting from deep and irreversible human action is a serious environmental problem. So, to rehabilitate mining sites, we studied the ability of diazotrophic bacteria to improve plant growth. Firstly, we isolated diazotrophic bacteria on Cyperaceae and Poaceae rhizosphere. After characterisation and partial identification of found bacteria, we decided to study the effect of presence and the activity of bacteria on plant growth. To compare with reference bacteria (Azospirillum brasilense), we had to test the effect of endemic bacteria on soil without limiting factors (Maré’s soil). We think that if bacteria are able to help plants to …
Chemical Diversity And Antimicrobial Properties Of Spike-Rush Species And Related Genera (Genus Eleocharis, Family Cyperaceae), Yiru Zhang
Masters Theses
The focus of this research was to explore the chemical diversity and antimicrobial properties of Eleocharis dulcis. By using methanol as a solvent to extract phytochemicals, qualitative comparisons were made between HPLC chromatograms from Eleocharis species and other genera. Meanwhile, this study also examined the antimicrobial properties of phytochemicals extracted from various tissues of Eleocharis dulcis in two different solvents (water or methanol) against two Gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli) and two Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) using a disc diffusion assay. The results suggested that the extracts had limited antimicrobial properties at up to 100 …
Macro And Micromorphological Studies And Numerical Analysis On The Nutlet Of Some Cyperoideae-Cyperaceae Taxa From Egypt And Their Taxonomic Significances, Ahmed Elkordy, Monier Abd El-Ghani, Ahmed Faried
Macro And Micromorphological Studies And Numerical Analysis On The Nutlet Of Some Cyperoideae-Cyperaceae Taxa From Egypt And Their Taxonomic Significances, Ahmed Elkordy, Monier Abd El-Ghani, Ahmed Faried
Turkish Journal of Botany
Nutlets of 13 taxa of subfamily Cyperoideae (Cyperaceae) from Egypt were investigated using light and scanning electron microscopes to ascertain the taxonomic utility of the nutlet in corroborating and elaborating on distinctions between closely related genera and species. The studied taxa included representatives of tribes Fuireneae, Cypereae, Cariceae, Abildgaardieae and Schoeneae. Nutlet shape, size, color, surface, epidermal cell shape, anticlinal boundaries, outer periclinal cell wall and relief of outer cell walls were provided. It was found that the epidermis has useful microscopic characters to help in the taxonomic assessment of Cyperoideae. Seven different types of anticlinal cell wall boundaries were …
On The Identity Of The Turkish Endemic Cyperus Noeanus (Cyperaceae), Attila Mesterházy, Filip Verloove
On The Identity Of The Turkish Endemic Cyperus Noeanus (Cyperaceae), Attila Mesterházy, Filip Verloove
Turkish Journal of Botany
Cyperus noeanus Boiss. is known only from the type specimen that was collected in Central Anatolia by Wilhelm Noë. It is considered an endemic species in Turkey. A detailed morphological study of the type specimen and comparison with similar related species in section Compressi Kunth demonstrated that the morphological characters of C. noeanus entirely fall within the range of characters of C. glaber L., which is a widely scattered species in Turkey, and widespread in S Europe and SW Asia as well. Based on our comparative study, we suggest that C. noeanus should be treated as a synonym of C. …
A New Species Of Cyperus Section Incurvi (Cyperaceae) From Venezuela, Gordon Tucker
A New Species Of Cyperus Section Incurvi (Cyperaceae) From Venezuela, Gordon Tucker
Faculty Research & Creative Activity
Cyperus fedoniae is described as a new species. It is known from a single collection from the lowlands of southern Venezuela. It is a member of section Incurvi. It is related to C. dichromeniformis and C. inops, from which it can be distinguished by its smaller size and features of spikelets and achenes. A distinctive feature is the arching culms which take root at the base of the spikelets.Cyperus fedoniae es descrito como una nueva especie. Se conoce de una sola muestra de las tierras bajas del sur de Venezuela. Es un miembro de la secci.n Incurvi. Est. relacionada con …
Using Morphometrics To Evaluate Taxonomic Relationships In Eleocharis Tenuis (Cyperaceae), Lane D. Gibbons
Using Morphometrics To Evaluate Taxonomic Relationships In Eleocharis Tenuis (Cyperaceae), Lane D. Gibbons
Masters Theses, 2010-2019
North America is host to multiple complex taxa, and unresolved relationships in the genus Eleocharis (Cyperaceae). Of noteworthy significance, are lasting taxonomic uncertainties involving plants referable to E. tenuis (var. tenuis, var. verrucosa, and var. pseudoptera) of the E. tenuis species complex. Morphology of E. tenuis is traditionally recognized as being widely variable, and intermediate among taxa along a broad geographic gradient. Cytological and morphometric data however, indicate that the varieties of E. tenuis are unique in cytology, and are consistently delimited by five morphological characters. Furthermore, this study shows that cytological data correlates with unique morphological …
The Juncaceae-Cyperaceae Interface: A Combined Plastid Sequence Analysis, Eleanor Jones, David A. Simpson, Trevor R. Hodkinson, Mark W. Chase, John A. N. Parnell
The Juncaceae-Cyperaceae Interface: A Combined Plastid Sequence Analysis, Eleanor Jones, David A. Simpson, Trevor R. Hodkinson, Mark W. Chase, John A. N. Parnell
Aliso: A Journal of Systematic and Floristic Botany
Phylogenetic relationships of Juncaceae and related families of Cyperales were investigated using DNA sequence data from the plastid rps16 intron, trnL intron, and trnL–F intergenic spacer. Results using parsimony analysis of the aligned matrices find Juncaceae and Cyperaceae to be monophyletic families, which form a clade sister to a monophyletic Thurniaceae that includes Prionium (Prioniaceae), all three clades with 100% bootstrap support. Within Juncaceae, the genus Luzula is monophyletic with 100% bootstrap support and sister to the rest of Juncaceae. Further groupings within the family indicate that the genus Juncus may be monophyletic only with the inclusion …
Chromosome Evolution In Cyperales, Eric H. Roalson, Andrew G. Mccubbin, Richard Whitkus
Chromosome Evolution In Cyperales, Eric H. Roalson, Andrew G. Mccubbin, Richard Whitkus
Aliso: A Journal of Systematic and Floristic Botany
Karyotypic evolution is a prominent feature in the diversification of many plants and animals, yet the role that chromosomal changes play in the process of diversification is still debated. At the diploid level, chromosome fission and/or fusion are necessary components of chromosomal structural change associated with diversification. Yet the genomic features required for these events remain unknown. Here we present an overview of what is known about genomic structure in Cyperales, with particular focus on the current level of understanding of chromosome number and genome size and their impact in a phylogenetic context. We outline ongoing projects exploring genomic structure …
Phylogeny Of Cyperaceae Based On Dna Sequence Data–A New Rbcl Analysis, David A. Simpson, A. Muthama Muasya, Marccus V. Alves, Jeremy J. Bruhl, Sandra Dhooge, Mark W. Chase, Carol A. Furness, Kioumars Ghamkhar, Paul Goetghebeur, Trevor R. Hodkinson, Adam D. Marchant, Anton A. Reznicek, Roland Nieuwborg, Eric H. Roalson, Erik Smets, Julian R. Starr, William W. Thomas, Karen L. Wilson, Xiufu Zhang
Phylogeny Of Cyperaceae Based On Dna Sequence Data–A New Rbcl Analysis, David A. Simpson, A. Muthama Muasya, Marccus V. Alves, Jeremy J. Bruhl, Sandra Dhooge, Mark W. Chase, Carol A. Furness, Kioumars Ghamkhar, Paul Goetghebeur, Trevor R. Hodkinson, Adam D. Marchant, Anton A. Reznicek, Roland Nieuwborg, Eric H. Roalson, Erik Smets, Julian R. Starr, William W. Thomas, Karen L. Wilson, Xiufu Zhang
Aliso: A Journal of Systematic and Floristic Botany
Since the Monocots II meeting in 1998, significant new data have been published that enhance our systematic knowledge of Cyperaceae. Phylogenetic studies in the family have also progressed steadily. For this study, a parsimony analysis was carried out using all rbcL sequences currently available for Cyperaceae, including data for two new genera. One of the four subfamilies (Caricoideae) and seven of the 14 tribes (Bisboeckelereae, Cariceae, Cryptangieae, Dulichieae, Eleocharideae, Sclerieae, Trilepideae) are monophyletic. Subfamily Mapanioideae and tribe Chrysitricheae are monophyletic if, as the evidence suggests, Hellmuthia is considered a member of Cypereae. Some other features of our analysis include: …
Phylogenetic Implications Of A Unique 5.8s Nrdna Insertion In Cyperaceae, Julian R. Starr, Geneviève Gravel, Anne Bruneau, A. Muthama Muasya
Phylogenetic Implications Of A Unique 5.8s Nrdna Insertion In Cyperaceae, Julian R. Starr, Geneviève Gravel, Anne Bruneau, A. Muthama Muasya
Aliso: A Journal of Systematic and Floristic Botany
The purpose of this study was to assess the phylogenetic utility of a large insertion (3 bp) in the 5.8S gene of nuclear ribosomal DNA (nrDNA) in Cyperaceae and selected Juncaceae. This was done by reconstructing the character evolution of the insertion on a phylogeny derived from rbcL sequences. Results suggest that the insertion was gained once at the base of Cyperaceae followed by multiple losses in its most-derived taxa. Despite several homoplastic losses (CI = 0.20), the pattern of insertion loss (RI = 0.88), and base pair variation within the insertion were useful for defining sedge clades at …
Phylogeny Of Abildgaardieae (Cyperaceae) Inferred From Its And Trnl–F Data, Kioumars Ghamkhar, Adam D. Marchant, Karen L. Wilson, Jeremy J. Bruhl
Phylogeny Of Abildgaardieae (Cyperaceae) Inferred From Its And Trnl–F Data, Kioumars Ghamkhar, Adam D. Marchant, Karen L. Wilson, Jeremy J. Bruhl
Aliso: A Journal of Systematic and Floristic Botany
Within the tribe Abildgaardieae, the relationships between Fimbristylis and its relatives have not been certain, and the limits of Fimbristylis have been unclear, with Bulbostylis and Abildgaardia variously combined with it and each other. The relationships and limits of tribes Abildgaardieae and Arthrostylideae and their genera were evaluated across 49 representative species using parsimony and maximum likelihood analyses of ITS (nuclear ribosomal) and trnL–F (plastid) DNA sequence data separately and combined. The evolutionary reconstructions derived from sequences of cpDNA and nrDNA disagree about the position of tribe Arthrostylideae relative to Abildgaardieae; Arthrostylis and Actinoschoenus are either nested within Abildgaardieae …
Phylogenetic Relationships In Tribe Cariceae (Cyperaceae) Based On Nested Analyses Of Four Molecular Data Sets, Marcia J. Waterway, Julian R. Starr
Phylogenetic Relationships In Tribe Cariceae (Cyperaceae) Based On Nested Analyses Of Four Molecular Data Sets, Marcia J. Waterway, Julian R. Starr
Aliso: A Journal of Systematic and Floristic Botany
Phylogenetic reconstruction for Carex and relatives in tribe Cariceae is complicated by species richness and nearly cosmopolitan distribution. In this investigation, our main objective was to estimate evolutionary relationships in tribe Cariceae using DNA sequence data from two spacer regions in nuclear ribosomal genes (ITS and ETS-1f) combined with noncoding chloroplast DNA (trnL intron, trnL–trnF intergenic spacer, and trnE–trnD intergenic spacers). Parsimony analyses of separate and combined data and Bayesian analysis of the combined data matrix revealed strong support for monophyly of tribe Cariceae and for monophyly of two major lineages, one …
Towards A Comprehensive Survey Of C3 And C4 Photosynthetic Pathways In Cyperaceae, Jeremy J. Bruhl, Karen L. Wilson
Towards A Comprehensive Survey Of C3 And C4 Photosynthetic Pathways In Cyperaceae, Jeremy J. Bruhl, Karen L. Wilson
Aliso: A Journal of Systematic and Floristic Botany
Members of the family Cyperaceae were surveyed by original observation and from the literature to assess the distribution of C3 and C4 photosynthetic pathways in the family. All 107 genera were included in the current sample, with 91 genera assessed as consistently C3 and 11 genera as C4. The genera Abildgaardia, Cyperus, Eleocharis, Fimbristylis, and Rhynchospora are variable for this trait. Of the total number (1474) of specific (1406) and infraspecific (68) taxa sampled, 938 taxa (63%) are C3, 527 taxa (36%) are C4, and nine species …
Vegatative Architecture Of Desiccation-Tolerant Arborescent Monocotyledons, Stefan Porembski
Vegatative Architecture Of Desiccation-Tolerant Arborescent Monocotyledons, Stefan Porembski
Aliso: A Journal of Systematic and Floristic Botany
Within the monocotyledons the acquisition of the tree habit is enhanced by either primary growth of the axis or a distinctive mode of secondary growth. However, a few arborescent monocotyledons deviate from this pattern in developing trunks up to four meters high that resemble those of tree ferns, i.e., their "woody-fibrous" stems consist mainly of persistent leaf bases and adventitious roots. This type of arborescent monocotyledon occurs in both tropical and temperate regions and is found within Boryaceae (Borya), Cyperaceae (Afrotrilepis, Bulbostylis, Coleochloa, Microdracoides), and Velloziaceae (e.g., Vellozia, Xerophyta). They have developed in geographically widely separated regions …
Two New Species Of Uncinia (Cyperaceae) From Chile, Gerald A. Wheeler
Two New Species Of Uncinia (Cyperaceae) From Chile, Gerald A. Wheeler
Aliso: A Journal of Systematic and Floristic Botany
Two new species of Uncinia (Cyperaceae) are described from Chile. Both are local endemics, with U. chilensis known from VIII (Bío Bío) and IX (Araucanía) regións of central Chile and U. araucana from IX Región only.
Uncinia (Cyperaceae) Of Ecuador, Gerald A. Wheeler, Paul Goetghebeur
Uncinia (Cyperaceae) Of Ecuador, Gerald A. Wheeler, Paul Goetghebeur
Aliso: A Journal of Systematic and Floristic Botany
Nine species of Uncinia (Cyperaceae: Caricoideae) are recorded from Ecuador, one of which, U. ecuadorensis, is newly described and illustrated here. Descriptions, illustrations, distribution maps, and both artificial and vegetative keys are provided for the nine species, and for some uncinias additional taxonomic, phytogeographic and ecological comments are made. A lectotype is designated for the name U. lenuis.
Four New Species Of Uncinia (Cyperaceae) From Northern South America, Gerald A. Wheeler, Paul Goetchebeur
Four New Species Of Uncinia (Cyperaceae) From Northern South America, Gerald A. Wheeler, Paul Goetchebeur
Aliso: A Journal of Systematic and Floristic Botany
Four new species of Uncinia (Cyperaceae) are described from northern South America. Three of them, U. lacustris, U. paludosa, and U. tenuifolia, belong in sect. Platyandrae; the fourth, U. subsacculata, belongs in sect. Uncinia. Three of the new species are known only from Ecuador, whereas U. paludosa has also been collected in Colombia.
Achene Microstructure In Eriophorum L. (Cyperaceae): Systematic Implications And Paleobotanical Applications, Gordon C. Tucker, Norton G. Miller
Achene Microstructure In Eriophorum L. (Cyperaceae): Systematic Implications And Paleobotanical Applications, Gordon C. Tucker, Norton G. Miller
Gordon C. Tucker
Silica bodies in the outer cells of the achene epidermis in 17 species of Eriophorum-and nine species of Scirpus, some of which have been placed in Eriophorum, were revealed by sonication and/or acetolysis and examined by scanning electron microscopy. A silica body consists of a basal platform, one or more large elevated protuberances, and sometimes smaller satellite protuberances. Individual species differ in the number of protuberances, the presence/absence of satellites, the texture of the platform, and the occurrence of nodules on the larger protuberances. These features, combined with achene shape and characteristics of the anticlinal walls of the epidermal cells …
Achene Microstructure In Eriophorum L. (Cyperaceae): Systematic Implications And Paleobotanical Applications, Gordon C. Tucker, Norton G. Miller
Achene Microstructure In Eriophorum L. (Cyperaceae): Systematic Implications And Paleobotanical Applications, Gordon C. Tucker, Norton G. Miller
Faculty Research & Creative Activity
Silica bodies in the outer cells of the achene epidermis in 17 species of Eriophorum-and nine species of Scirpus, some of which have been placed in Eriophorum, were revealed by sonication and/or acetolysis and examined by scanning electron microscopy. A silica body consists of a basal platform, one or more large elevated protuberances, and sometimes smaller satellite protuberances. Individual species differ in the number of protuberances, the presence/absence of satellites, the texture of the platform, and the occurrence of nodules on the larger protuberances. These features, combined with achene shape and characteristics of the anticlinal walls of the epidermal cells …
Achene Microstructure In Eriophorum L. (Cyperaceae): Systematic Implications And Paleobotanical Applications, Gordon Tucker, Norton Miller
Achene Microstructure In Eriophorum L. (Cyperaceae): Systematic Implications And Paleobotanical Applications, Gordon Tucker, Norton Miller
Faculty Research & Creative Activity
Silica bodies in the outer cells of the achene epidermis in 17 species of Eriophorum-and nine species of Scirpus, some of which have been placed in Eriophorum, were revealed by sonication and/or acetolysis and examined by scanning electron microscopy. A silica body consists of a basal platform, one or more large elevated protuberances, and sometimes smaller satellite protuberances. Individual species differ in the number of protuberances, the presence/absence of satellites, the texture of the platform, and the occurrence of nodules on the larger protuberances. These features, combined with achene shape and characteristics of the anticlinal walls of the epidermal cells …
Taxonomic Notes On Carex (Cyperaceae) Of Austral South America, Gerald A. Wheeler
Taxonomic Notes On Carex (Cyperaceae) Of Austral South America, Gerald A. Wheeler
Aliso: A Journal of Systematic and Floristic Botany
The name Carex poeppigii (sect. Echinochlaenae) is validated and a new combination in South American Carex, C. vixdentata (sect. Spirostachyae), is made here. Also, the taxonomic status of C. aueri is discussed, and this name is placed in the synonymy of C. reichei (sect. Arenariae).
Midsummer Standing Crops Of Wetland Sedge Meadows Along A Transect From Forest To Prairie, Eville Gorham, John M. Bernard
Midsummer Standing Crops Of Wetland Sedge Meadows Along A Transect From Forest To Prairie, Eville Gorham, John M. Bernard
Journal of the Minnesota Academy of Science
Midsummer standing crops of wetland sedges have been measured along a transect from forest to prairie in northwestern Minnesota. The eight forest stands, all but one on waterlogged fibrous peats, are dominated by Carex lacustris (4 stands), C. lasiocarpa (2), C. rostrata (1) and C. atherodes (1). They exhibit above-ground standing crops ranging from 425 to 738 g dry wt/m2, with a mean of 606 g/m2. The five prairie stands on well-drained silty peats are all dominated by Carex atherodes, and their standing crops range from 679 to 1248 g dry wt/m2, with a mean of 941 g/m2. Above-ground standing …
Carex — Its Distribution And Importance In Utah, Mont E. Lewis
Carex — Its Distribution And Importance In Utah, Mont E. Lewis
Brigham Young University Science Bulletin, Biological Series
No abstract provided.