Exposure to Asulox inhibits the growth of mosses. (1/34)
Asulox is a herbicide used to control bracken. Its effects on mosses were investigated to ascertain whether exposure proved as detrimental as found in parallel studies on pteridophytes. Mature gametophytes of 18 mosses were exposed to a range of concentrations of Asulox under standard conditions and the effects on growth monitored. Plants were cut to a standard length, exposed to Asulox solution for 24 h, grown for 3 weeks and total elongation (main stem and branches) measured. EC50 values were calculated and species ranked according to sensitivity. The effects of exposure on total elongation were compared with those on main stem elongation alone. Under the conditions tested, the total elongation of all species was inhibited after exposure to Asulox. The amount of elongation observed after exposure was different for different species and inhibition of elongation occurred at different exposure concentrations. A single regression equation was not adequate to describe the dose response curves of all species tested. An ability to produce secondary branches may confer increased tolerance to Asulox exposure. It is concluded that mosses suffer detrimental effects after exposure to Asulox at concentrations similar to those that affect fern gametophytes such as bracken. (+info)Ozone effects on the ultrastructure of peatland plants: Sphagnum mosses, Vaccinium oxycoccus, Andromeda polifolia and Eriophorum vaginatum. (2/34)
BACKGROUND AND AIMS: Ozone effects on peatland vegetation are poorly understood. Since stress responses are often first visible in cell ultrastructure, electron microscopy was used to assess the sensitivity of common peatland plants to elevated ozone concentrations. METHODS: Three moss species (Sphagnum angustifolium, S. magellanicum and S. papillosum), a graminoid (Eriophorum vaginatum) and two dwarf shrubs (Vaccinium oxycoccus and Andromeda polifolia), all growing within an intact canopy on peat monoliths, were exposed to a concentration of 0, 50, 100 or 150 ppb ozone in two separate growth chamber experiments simulating either summer or autumn conditions in central Finland. After a 4- or 5-week-long exposure, samples were photographed in a transmission electron microscope and analysed quantitatively using image processing software. KEY RESULTS: In the chlorophyllose cells of the Sphagnum moss leaves from the capitulum, ozone exposure led to a decrease in chloroplast area and in granum stack thickness and various changes in plastoglobuli and cell wall thickness, depending on the species and the experiment. In E. vaginatum, ozone exposure significantly reduced chloroplast cross-sectional areas and the amount of starch, whereas there were no clear changes in the plastoglobuli. In the dwarf shrubs, ozone induced thickening of the cell wall and an increase in the size of plastoglobuli under summer conditions. In contrast, under autumn conditions the cell wall thickness remained unchanged but ozone exposure led to a transient increase in the chloroplast and starch areas, and in the number and size of plastoglobuli. CONCLUSIONS: Ozone responses in the Sphagnum mosses were comparable to typical ozone stress symptoms of higher plants, and indicated sensitivity especially in S. angustifolium. The responses in the dwarf shrubs suggest stimulation of photosynthesis by low ozone concentrations and ozone sensitivity only under cool autumn conditions. (+info)Variety in dustiness and hygiene quality of peat bedding. (3/34)
Respiratory exposure to organic dust induces chronic pulmonary diseases both in farmers and horses. The aim of this study was to examine the variation of dustiness and hygiene quality of peat moss bedding. Materials studied were weakly decomposed sphagnum peat (A), weakly decomposed sphagnum peat warmed up in storage (> 30 degrees C) (B) and two more decomposed few-flowered sedge peats (C and D). The geometric mean of mesophilic fungi, thermotolerant fungi and thermophilic actinomycetes were determined from the material. Samples of inhalable dust and endotoxins were collected with IOM samplers and respirable dust with 10M foam samplers when the peat was rotated in a cylinder. The number of particles was detected with an optical particle counter. An LAL assay was used for analysing endotoxins from the filter samples. There were differences in the hygiene quality and dustiness between peat materials (p < 0.01). The geometric mean of fungi was smallest in material A. Warming-up increased the number of fungi in sphagnum peat, but on the other hand, it decreased the content of endotoxin (p < 0.01). Few-flowered peat materials contained thermophilic actinomycetes and material D also contained Aspergillus fumigatus. The concentrations of inhalable dust, respirable dust and the number of particles were smaller in the few-flowered peats (C-D) than in the sphagnum peats (A-B). It is concluded that there are differences in the dustiness and hygiene quality of peat bedding. (+info)Bacillus acidicola sp. nov., a novel mesophilic, acidophilic species isolated from acidic Sphagnum peat bogs in Wisconsin. (4/34)
A mesophilic, acidophilic, spore-forming bacterium, strain 105-2(T), was isolated from an acidic Sphagnum peat bog in Wisconsin, USA. Strain 105-2(T) has 16S rRNA gene sequence similarity to Bacillus sporothermodurans DSM 10599(T) and Bacillus oleronius DSM 9356(T) of 97.4 and 97.8%, respectively. The primary lipoquinone is MK-7 and the major fatty acids are 15:0 iso, 15:0 anteiso and 17:0 anteiso. The predominant polar lipids were found to be diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and a glycolipid. The DNA G+C content was found to be 43.2 mol%. The phenotypic, chemotaxonomic and molecular analyses identified strain 105-2(T) as a novel Bacillus species, for which the name Bacillus acidicola is proposed. The type strain is 105-2(T) (=DSM 14745(T)=ATCC BAA-366(T)=NRRL B-23453(T)). (+info)Phylogenetic analysis and in situ identification of bacteria community composition in an acidic Sphagnum peat bog. (5/34)
The Bacteria community composition in an acidic Sphagnum peat bog (pH 3.9 to 4.5) was characterized by a combination of 16S rRNA gene clone library analysis, rRNA-targeted fluorescence in situ hybridization (FISH), and cultivation. Among 84 environmental 16S rRNA gene clones, a set of only 16 cloned sequences was closely related (>or=95% similarity) to taxonomically described organisms. Main groups of clones were affiliated with the Acidobacteria (24 clones), Alphaproteobacteria (20), Verrucomicrobia (13), Actinobacteria (8), Deltaproteobacteria (4), Chloroflexi (3), and Planctomycetes (3). The proportion of cells that hybridized with oligonucleotide probes specific for members of the domains Bacteria (EUB338-mix) and Archaea (ARCH915 and ARC344) accounted for only 12 to 22% of the total cell counts. Up to 24% of the EUB338-positive cells could be assigned by FISH to specific bacterial phyla. Alphaproteobacteria and Planctomycetes were the most numerous bacterial groups (up to 1.3x10(7) and 1.1x10(7) cells g-1 peat, respectively). In contrast to conventional plating techniques, a novel biofilm-mediated enrichment approach allowed us to isolate some representatives of predominant Bacteria groups, such as Acidobacteria and Planctomycetes. This novel strategy has great potential to enable the isolation of a significant proportion of the peat bog bacterial diversity. (+info)Two new species of Pseudogymnoascus with Geomyces anamorphs and their phylogenetic relationship with Gymnostellatospora. (6/34)
Two new psychrophilic Pseudogymnoascus species with Geomyces anamorphs are described from a Sphagnum bog in Alberta, Canada. Pseudogymnoascus appendiculatus has long, branched, orange appendages and smooth, fusoid to ellipsoidal ascospores with a faint longitudinal rim. Pseudogymnoascus verrucosus has short, subhyaline appendages and warty peridial hyphae and ascospores, and both smooth to asperulate and irregularly warty conidia. Both species produce asci in chains, a feature that supports the distinction between this group and Myxotrichum, which produces asci singly. The discovery of species intermediate between Pseudogymnoascus and Gymnostellatospora, in having both ornamented ascospores and Geomyces anamorphs, prompted a re-evaluation of the genera. Sequence analysis of the internal transcribed spacer regions (ITS) of the nuclear ribosomal DNA indicates that the two genera remain distinct and comprise a monophyletic group. Pseudogymnoascus species have smooth to warty or lobate-reticulate ascospores while species of Gymnostellatospora have walnut-shaped spores with distinct longitudinal crests and striations. Anamorphs assignable to the form genus Geomyces are allied with both genera. A key is provided to the four species and varieties of Pseudogymnoascus. (+info)Isolation of aerobic, gliding, xylanolytic and laminarinolytic bacteria from acidic Sphagnum peatlands and emended description of Chitinophaga arvensicola Kampfer et al. 2006. (7/34)
Four aerobic, heterotrophic, yellow-pigmented and flexirubin-producing bacterial strains with gliding motility were isolated from acidic Sphagnum-dominated wetlands of Northern Russia. These bacteria are capable of degrading xylan, laminarin and some other polysaccharides, but not cellulose, pectin or chitin. The four strains possess almost identical 16S rRNA gene sequences and are most closely related (98.9-99.5 % sequence similarity) to the recently reclassified species of the phylum Bacteroidetes, Chitinophaga arvensicola Kampfer et al. 2006, formerly known as [Cytophaga] arvensicola Oyaizu et al. 1983. However, the novel isolates from Sphagnum peat differed from C. arvensicola DSM 3695(T) in their ability to degrade xylan and starch, by greater tolerance of acidic pH and by their inability to reduce nitrate. An emended description of this species is proposed. (+info)Inhibitory effect of fulvic acid extracted from Canadian sphagnum peat on chemical mediator release by RBL-2H3 and KU812 cells. (8/34)
Fulvic acid (FA) was extracted and purified from Canadian Sphagnum peat (CP-FA) and characterized by using an element analysis meter, Fourier transform infrared (FT-IR) spectroscopy, electron spin resonance (ESR) spectroscopy, and (13)C-nuclear magnetic resonance ((13)C-NMR) spectroscopy. To investigate the antiallergic effect of CP-FA, we incubated rat basophilic leukemia (RBL-2H3) cells with 0.001-10.0 microg/ml of CP-FA and determined the beta-hexosaminidase release inhibition at different response stages. The intracellular calcium [Ca(2+)](i) level was also determined by using Fluo 3-AM, a calcium-specific fluorescent probe, and the cytotoxicity of CP-FA was determined by the 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay. The results revealed that RBL-2H3 cells incubated for 48 h with 0.001-10.0 microg/ml of CP-FA did not show any decreased viability. CP-FA inhibited the beta-hexosaminidase release by IgE-sensitized, antigen-stimulated RBL-2H3 cells at the antigen-antibody binding stage and the antibody-receptor binding stage. CP-FA also inhibited histamine release from A23187 plus PMA- or compound 48/80-stimulated KU812 cells. Furthermore, there was a decrease in the intracellular [Ca(2+)](i) level in IgE-sensitized cells incubated with CP-FA and stimulated with antigen. Our results show that CP-FA may be useful for the treatment or prevention of allergic diseases. (+info)Sphagnopsida is a division of mosses known as peat mosses, characterized by their ability to form extensive acidic peat deposits due to slow decomposition rates, and having a unique morphological structure with conductive tissues called hydroids and leucoids that allow for water transportation and storage.
Sphagnopsida is a division of non-vascular plants that are commonly known as peat mosses or bog mosses. These plants are characterized by their ability to absorb and retain large amounts of water, making them an important component of many wetland ecosystems. They have simple, branching structures with small, leaf-like appendages called pseudoparenchyma. Sphagnopsida species play a significant role in the global carbon cycle as they decompose very slowly and can accumulate over long periods of time to form peat deposits.
Sphagnopsida
... is a class of mosses that includes a single subclass Sphagnidae, with two orders. It is estimated it originated ... ISBN 1-930723-38-5. Shaw, A. Jonathan (2000). "Phylogeny of the Sphagnopsida Based on Chloroplast and Nuclear DNA Sequences". ... Sphagnopsida, Plant classes, All stub articles, Moss stubs). ...
Clark Thomas Rogerson
Sphagnopsida, Sphagnaceae". N Am Flora II 11:161-175. 1984. Rogerson CT, Thiers BM. "Fungi from the A.O. Garrett Herbarium, ...
Ambuchanania
Phylogeny of the Sphagnopsida Based on Chloroplast and Nuclear DNA Sequences [1], The Bryologist 103 (2): 277-306. Shaw, A. ... Seppelt, Rodney (2000). "The Sphagnopsida (Sphagnaceae; Ambuchaniaceae) in Australia". Hikobia. Johnson, K.A., Whinam, J., ...
Sphagnum
"Morphology of the Sphagnopsida". ucmp.berkeley.edu. Retrieved 6 April 2023. Andrus, Richard. Sphagnum. Flora of North America. ... 2010). "Newly resolved relationships in an early land plant lineage: Bryophyta class Sphagnopsida (peat mosses)". American ...
Dollyphyton
Bryophyta Class Sphagnopsida (peat mosses)". American Journal of Botany. 974: 1511-1531. Edwards, Dianne; Morris, Jennifer L.; ...
Flatbergium
Bryophyta class Sphagnopsida (peat mosses)" (PDF). American Journal of Botany. 97 (9): 1511-1531. doi:10.3732/ajb.1000055. hdl: ...
Eosphagnum
Bryophyta class Sphagnopsida (peat mosses)" (PDF). American Journal of Botany. 97 (9): 1511-1531. doi:10.3732/ajb.1000055. hdl: ...
Moss
The Sphagnopsida, the peat-mosses, comprise the two living genera Ambuchanania and Sphagnum, as well as fossil taxa. Sphagnum ... The early divergent classes Takakiopsida, Sphagnopsida, Andreaeopsida and Andreaeobryopsida either lack stomata or have ...
Geography of Belarus
... and Sphagnopsida (31 species). 50 of them are considered drug plants. Animals in Belarus are those common to Central and ...
List of MeSH codes (B06)
... sphagnopsida MeSH B06.388.250.199 - dennstaedtiaceae MeSH B06.388.250.199.666 - pteridium MeSH B06.388.250.222 - ...
Protosphagnum
Sphagnopsida, Monotypic moss genera, Prehistoric plant genera, Permian plants, All stub articles, Moss stubs, Paleozoic plant ...
Hornwort
However, the same form of columella is also characteristic of basal moss groups, such as the Sphagnopsida and Andreaeopsida, ...
Tetraphidaceae
... that indicate that the moss is primitive and may share a common ancestor with Sphagnopsida and Andreaeidae. The exact phylogeny ...
List of clubmosses and mosses of Montana
Sphagnopsida Order: Sphagnales, Family: Sphagnaceae Contorted sphagnum, Sphagnum contortum Flat-leaved bogmoss, Sphagnum ...
Sphagnopsida - Wikipedia
Sphagnopsida is a class of mosses that includes a single subclass Sphagnidae, with two orders. It is estimated it originated ... ISBN 1-930723-38-5. Shaw, A. Jonathan (2000). "Phylogeny of the Sphagnopsida Based on Chloroplast and Nuclear DNA Sequences". ... Sphagnopsida, Plant classes, All stub articles, Moss stubs). ...
Sphagnopsida - Naturfakta
Moss - Wikipedia
The Sphagnopsida, the peat-mosses, comprise the two living genera Ambuchanania and Sphagnum, as well as fossil taxa. Sphagnum ... class Sphagnopsida. class Andreaeopsida. class Andreaeobryopsida. class Oedipodiopsida. class Polytrichopsida. class ... Sphagnopsida, Andreaeopsida and Andreaeobryopsida either lack stomata or have pseudostomata that do not form pores. In the ...
California Moss eFlora References
Botanical Electronic News - BEN #351
Kratt-torvmose
Sphagnum pulchrum - Artsdatabanken
Lindberg's Sphagnum - Montana Field Guide
Chromobacterium sphagni sp. nov., an insecticidal bacterium isolated from Sphagnum bogs - PubMed
MEDLINE Data Changes - 2004. NLM Technical Bulletin. 2003 Nov-Dec
SYKO Herbarium Moss Collection
Distribution and evolution of the serine/aspartate racemase family in plants - PubMed
Bjørnetorvmose
MeSH Browser
Sphagnopsida Preferred Term Term UI T529337. Date12/30/2002. LexicalTag NON. ThesaurusID NLM (2004). ... Sphagnopsida Preferred Concept UI. M0444134. Registry Number. txid113508. Related Numbers. txid13804. Scope Note. A class of ... A plant genus of the family Sphagnaceae, order Sphagnales, subclass Sphagnidae, class SPHAGNOPSIDA.. Terms. Sphagnum Preferred ... Sphagnopsida. Tree Number(s). B01.875.800.575.137.750. Unique ID. D044003. RDF Unique Identifier. http://id.nlm.nih.gov/mesh/ ...
MeSH Browser
Sphagnopsida Preferred Term Term UI T529337. Date12/30/2002. LexicalTag NON. ThesaurusID NLM (2004). ... Sphagnopsida Preferred Concept UI. M0444134. Registry Number. txid113508. Related Numbers. txid13804. Scope Note. A class of ... A plant genus of the family Sphagnaceae, order Sphagnales, subclass Sphagnidae, class SPHAGNOPSIDA.. Terms. Sphagnum Preferred ... Sphagnopsida. Tree Number(s). B01.875.800.575.137.750. Unique ID. D044003. RDF Unique Identifier. http://id.nlm.nih.gov/mesh/ ...
NEON Biorepository Data Portal Taxonomy Display: Plantae
DeCS
Sphagnopsida - Preferred Concept UI. M0444134. Scope note. A class of BRYOPHYTA which is best known for Sphagnum forming PEAT ... Sphagnopsida Entry term(s):. Moss, Peat. Moss, Sphagnum. Mosse, Peat. Mosses, Peat. Mosses, Sphagnum. Peat Moss. Peat Mosse. ... A plant genus of the family Sphagnaceae, order Sphagnales, subclass Sphagnidae, class SPHAGNOPSIDA. ...
Ambuchanania leucobryoides - Wikispecies
TapScan - Species containing HD DDT
Mosses (Bryopsida)
DeCS 2004 - Novos termos
Kindbergia praelonga (Syn Eurhynchium praelongum) | Introduction to Bryophytes
shona
NEW (2004) MESH HEADINGS WITH SCOPE NOTES (UNIT RECORD FORMAT; 10/2/2003
Molecular phylogenetics of mosses and relatives - UBC Library Open Collections
Price Mossland - MOC, online chart, quotes, history | What is Mossland?
Artsdatabanken
Günther's Site - Photos of European Plants
Mosses1
- Sphagnopsida is a class of mosses that includes a single subclass Sphagnidae, with two orders. (wikipedia.org)
Sphagnum1
- The peat moss Sphagnum palustre, of class Sphagnopsida in the phylum Bryophyta, does not have hydroids and instead uses hyaline cells with thickened, helical-patterned cell walls and pores to store water in the leaves. (bvsalud.org)
Class1
- Class Sphagnopsida has only 15 species. (kspu.edu)
Sphagnales1
- A plant genus of the family Sphagnaceae, order Sphagnales, subclass Sphagnidae, class SPHAGNOPSIDA . (nih.gov)
Takakiopsida2
- The early divergent classes Takakiopsida, Sphagnopsida, Andreaeopsida and Andreaeobryopsida either lack stomata or have pseudostomata that do not form pores. (wikipedia.org)
- The monogeneric classes Takakiopsida and Sphagnopsida likely represent the first and second split within moss phylogeny, respectively. (ubc.ca)