Does thermal stress cause females of the plant bryum. Sep 28, 2015 a variety of bryum argenteum from 77 o s was previously shown to have strong ice. Bryum argenteum is a desert moss which shows tolerance to the desert environment and is emerging as a good plant material for identification of stressrelated genes. The plant list includes 2,577 scientific plant names of species rank for the genus bryum. Desiccation stress is frequently experienced by the moss bryum argenteum and can influence survival, propagation and niche selection. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. Bryum argenteum silvergreen bryum moss bryum axelblyttii blytts bryum moss bryum billarderi. Pdf observations regarding the life cycle of silvermoss bryum. Bryum argenteum, the silvergreen bryum moss or silvery thread moss, is a species of moss in. School of life sciences, university of nevada las vegas, las vegas, nv, 89154 usa. Download child taxa of bryum download species of bryum search for child taxa of bryum classification unranked biota kingdom plantae phylum bryophyta class bryopsida order bryales family bryaceae genus bryum species aggregate. Ap2erf genes have been identified and extensively studied in many plants, while they are rarely studied in moss. Plants commonly grow in cracks in pavement, on mineral soil, stones, but also in more natural habitats. Pdf elevational patterns of genetic variation in the.
The atlas of florida plants provides a source of information for the distribution of plants within the state and taxonomic information. The reproductive structures appear on stalks raised above the photosynthetic parts of the plant roughly 1. The antimicrobial activity of bryum argenteum ethanol extracts was evaluated by microdilution method against four bacterial escherichia coli, bacillus subtilis, micrococcus luteus and staphilococcus aureus and four fungal species aspergillus niger, penicillium ochrochloron, candida albicans and trichophyton mentagrophyes. Bryum species generally have shorter laminal cells with short, thick, and rounded stems. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. Thermal tolerance of dried shoots of the moss bryum argenteum. Youll still be able to search, browse and read our articles, but you wont be able to register, edit your account, purchase content, or activate tokens or eprints during that period. All have cosmopolitan distributions and are widespread throughout. The desiccation tolerant bryophyte bryum argenteum is an important component of desert biological soil crusts bscs and is emerging as a. Bryum is a polyphyletic genus that has high morphological variation.
Method for control of bryum argenteum download pdf info publication number ep17329b1. Antimicrobial activity of bryum argenteum sciencedirect. Bryum species can be identified through patterns of asexual reproduction, coloration features of the stem and leaf base, and the. Effect of extracts of bryum argenteum and synthetic fungicide on some common disease of zea mays. The denselypacked erect shoots of bryum argenteum are distinctly wormlike in appearance. The stems are julaceous smoothly cylindrical, like a catkin, 125 mm tall, yellowish green or red to redbrown, and branched below. All structured data from the file and property namespaces is available under the creative commons cc0 license. Plants profile for bryum argenteum silvergreen bryum moss. Dependence on epiphytic bacteria for freezing protection.
Silvergreen bryum moss bryum argenteum by robinson sudan. Use of images featured on maryland biodiversity project is. A variety of bryum argenteum from 77 o s was previously shown to have strong ice. Genetic variation and dispersal of bryum argenteum and hennediella heimii populations in the garwood valley, southern victoria land, antarctica. Bryum argenteum forms glossy, silvery turfs on the substratum. The antimicrobial activity of bryum argenteum ethanol extracts was evaluated by microdilution method against four bacterial escherichia coli, bacillus subtilis.
Pdf taxonomic notes on some european species of bryum. Molecular support for pleistocene persistence of the. Bryum argenteum is a bryophyte moss that forms very close tufts or cushions. Ap2erf genes have been identified and extensively studied in many plants, while they are. In general, greater silverythread moss control was achieved with fecontaining products. Dependence on epiphytic bacteria for freezing protection in. Eppley sex ratios and the shy male hypothesis in the moss bryum argenteum. Control of silverythread moss bryum argenteum hedw.
The record derives from tropicos data supplied on 20120418 which reports it as an accepted name record 35116382 with original publication details. Both iaa and ga 3 increased the percentage of fertile gametophores in the male clone, and inhibited the response in the female clone. Pdf genetic variation and dispersal of bryum argenteum. We do not intend the plant list to be complete for names of infraspecific rank. The desiccationtolerant moss bryum argenteum is an important component of the biological soil crusts bscs found in the gurbantunggut desert. To test this hypothesis, sporophytes of the species bryum argenteum were subjected to thermal stress and observed for growth abnormalities and sporophyte abortions. Treatments included iron fecontaining products, nitrogen fertilizers, ultra dawn dishwashing detergent ud at 3% vv, and oxadiazon. Effects of gibberellins ga 3, ga 7 on the protonema diameter of b. Maryland biodiversity project silvergreen bryum moss bryum. Summary mosses are the dominant flora of antarctica, but their mechanisms of survival in the face of extreme low temperatures are poorly understood.
Desiccation tolerance is defined as the ability to revive from the air dried state. The soles of shoes that tread on it in its city habitat, sidewalk cracks, break off little bits of leaves and carry them to other sidewalk cracks. This moss tolerates city conditions and being walked on quite nicely. Pdf gibberellin influence on the morphogenesis of the. When you buy this pattern, you can download 2 files 1 in english and 1 in french categories. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Files are available under licenses specified on their description page.
This shawl is worked side to side in garter stitch and textured stitch. All bryum species exhibit narrowed cells at the margins. About half of all moss taxa exhibit femalebiased sex ratios, and bryophyte male rarity remains largely unexplained. Click below on a thumbnail map or name for species profiles. This is the most recognizable of all british mosses. Bryum argenteum, or thesilvery threadmoss, is alsoan easily met with species. Protonemal and shoot emergence of dried bryum argenteum under different thermal stress conditions. Large image for bryum argenteum silvergreen bryum moss. Effect of ethanolic extract of bryum argenteum on curvularia lunata sn extract concentration % colony diameter mm per cent inhibition %. Bryum may well be the largest genus of mosses in the world with over a thousand described species, but it has been split into segregate genera by spence. It is exceptionally well represented in temperate and polar regions, and is especially common and diverse in california.
Effect of irrigation water ph and acidifying source on silverythread. Field experiments were conducted to evaluate chemicals for silverythread moss control and bentgrass turfgrass quality. Shawl knitting pattern bryum detailed explanation pdf. Dependence on epiphytic bacteria for freezing protection in an antarctic moss, bryum argenteum. Phytohormones such as auxins, cytokinins, gibberellins, and abscisic acid differentially affect gametangial induction in male and female clones of bryum argenteum. Pdf genetic variation and dispersal of bryum argenteum and.
Bryum argenteum is perhaps the most widespread and distinctive moss in the world, although in many regions it is found primarily in urban or other heavily disturbed sites and is mostly absent from native undisturbed habitats in the tropics. Hennediella heimii and bryum the common assumption is that moss propagules are wind argenteum along with the cyanophyte nostoc sp. It is one of the most common urban mosses of inner cities and can be easily recognized without a microscope. Bryum haematoneurum bryum hagenii bryum handelii bryum hatcheri bryum hauthalii bryum hawaiicum bryum hedbergii bryum hioramii bryum hochreutineri. Loose to crowded tufts, silvery green to silver above, yellow or brown underneath flowers 1973. Establishment of bryum argenteum and concentrations of. Bryum icodense bryum illecebraria bryum imbricatum bryum inaequale bryum incacorralis bryum incrassatolimbatum bryum innovans bryum insolitum bryum intermedium. Pdf the genus bryum has more currently recognized species ca 90 than any other moss genus in europe and a reputation for taxonomic difficulty. However, it is not a legal authority for statutory or regulatory purposes.
A scale bar is given, in number of substitutions per site. The website also provides access to a database and images of herbarium specimens found at the university of south florida and other herbaria. After drying, the plant material was stored in paperbags until the beginning of the experiment. Frontiers effects of rate of drying, life history phase. Ap2erf transcription factor family plays important roles in plant responses to biotic and abiotic stresses. A image showing the lethal effects of high temperature on dried b. It fruits in october and november, and is at home almost anywhere, on the ground, by thewaysides, on walls, or on roofs of houses, compacting its slenderand fragile stems, of from a quarter of an inch to an inch long,into exquisite silvery white patches. The consequences of the typification of bryum by b. We attempted to disentangle the interacting factors of life history phase five categories and rate of desiccation time allotted for induction of desiccation tolerance for ecotypes of b. To elucidate the molecular mechanisms related to desiccation tolerance, we employed rnaseq and digital gene expression dge technologies to study the genomewide. Bryales bryum dichotomum royal botanic garden edinburgh.
Using chlorophyll fluorescence as a stress index, we. Bryum argenteum, the silvergreen bryum moss or silvery thread moss, is a species of moss in the family bryaceae. A large image of bryum argenteum silvergreen bryum moss from the usda plants database. Elevational patterns of genetic variation in the cosmopolitan moss bryum argenteum bryaceae. Pdf the cosmopolitan moss bryum argenteum in antarctica. Gibberellin influence on the morphogenesis of the moss bryum argenteum 375 fig. Mosses are the dominant flora of antarctica, but their mechanisms of survival in the face of extreme low temperatures are poorly understood. The reproductive structures appear on stalks raised above the photosynthetic parts of the plant roughly 1 centimeter between autumn and.
There are about 15 silverwhite species described, with species definitions based on a combination of one. The percentage of variable sites in subsets of the data is indicated highlighting the. Bryum argenteum is easily recognizable with its typical moss growth pattern. This plant may be known by one or more common names in different places, and some are listed above. This latter characteristic provides it with a silvery or frosted appearance. The small leaves have a single costa that extends into a short point at the leaf tips. This evergreen moss consists of dense mats of whitish green leafy stems that are up to 1 cm. Using a pot experiment with slightly acidic and alkaline soils anthropogenically contaminated by as, cd, pb, and zn, we assessed how the establishment of bryum argenteum and concentrations of elements p, ca, mg, as, cd, cr, cu, fe, mn, ni, pb, and zn in its biomass are affected by the ph of the substrate, mobility of trace elements, and by quick lime cao and superphosphate p additives.
Silvery thread bryum argenteummoss control on creeping. The plants database includes the following 66 species of bryum. Biological and environmental characteristics of three. Pdf antimicrobial activity of bryum argenteum marko. Branched paraphyses of bryum roseum is an article from the bryologist, volume 6. Hormonal regulation of gametangial formation in the moss.
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