Hyperaccumulation of as by plants has been identified as a valuable trait for the development of a practical phytoremediation processes for removal of this potentially toxic trace element from the environment. Arsenic hyperaccumulation in gametophytes of pteris. Pteris large genus of terrestrial ferns of tropics and subtropics. Compared to the 34% level of polyploidy in all leptosporangiate ferns, polyploid speciation is apparently. In pteris longifolia, however, the pinnae are articulated to the rachis, whereas in p.
The spore morphology including surface texture, size, shape and length of the spores provides a useful character to distinguish the genera and species of family pteridaceae 2. List of pteris species synonyms, list of pteris species pronunciation, list of pteris species translation, english dictionary definition of list of pteris species. The primary differences are in the degree of rachis pubescence denser in p. Pteris cretica plant finder missouri botanical garden. The record derives from tropicos data supplied on 20120418 which reports it as an accepted name record 26602467 with original publication details. Several other fern species, including pityrogramma calomelanos visoottiviseth et al. Photosynthetic electrontransfer reactions in the gametophyte of pteris multifida reveal the presence of allelopathic interference from the invasive plant species bidens pilosa. Image credit to australian national botanic gardens. Show all show tabs longleaf brake general information.
Spore morphology and its systematic implication in pteris ncbi. The fern was growing at a central florida site contaminated with large amounts of copper arsenate in the soil. Arsenic distribution at the whole plant fronds and cellular level was investigated using chemical analyses. Pteris longifolia, the longleaf brake is a species of fern in the pteridoideae subfamily of the pteridaceae. The plant list includes 836 scientific plant names of species rank for the genus pteris. Copeland, 1947, and this result has been accepted by such taxonomists as alston 1956, and others. Pteris longifolia in the germplasm resources information network grin, u. Additionally, pteris species with pinnate laminae and free veins, including p. Pdf as a result of studies on neotropical pteris l. College, utai, durg bdepartment of biotechnology and microbiology, bhilai mahila mahavidyalaya, bhilai. Pteris ferns, plants and species pteris fern nurseries. The record derives from tropicos data supplied on 20120418 which reports it as an accepted name record 26602467. Pteris longifolia, the longleaf brake is a species of fern in the pteridoideae subfamily of the. Pteridophyte definition of pteridophyte by the free.
Some of these ferns are popular in cultivation as houseplants. Changes in gametophyte physiology of pteris multifida induced by the leaf leachate treatment of the invasive bidens pilosa. These signs include brown leaf margins and dropping leaves, although some leaf drop is typical. Pdf molecular phylogeny and biogeography of the fern genus. The plants database includes the following 26 species of pteris. Any duplication or publication of text or images herein for commercial gain without explicit written permission of the owner or photographer. Pteris vittata is the first plant reported to be a hyperaccumulator of arsenic as, and little is known about the mechanisms of as hyperaccumulation in this plant. It grows outdoors in any chalk free, moist but welldrained soil with plenty of added leafmould in part shaded to full shaded positions. Annual catalogue 1900 native and exotic plants, trees, shrubs 1900 205489952. An pteris in nahilalakip ha familia nga pteridaceae. Click below on a thumbnail map or name for species profiles. Genus pteris can be evergreen, semievergreen or deciduous ferns, with short or long rhizomes and fronds that may be pinnate to 4pinnate. Pdf a global plastid phylogeny of the brake fern genus pteris.
Pteris ensiformis or silver lace fern, slender brake fern is from south east asia, pteris argyraea is the silver brake fern. Pteris ferns are varied, pteris cretica is the cretan brake fern or table fern. Pteris pteridaceae, comprising over 250 species, had been thought to be a monophyletic genus until the three monotypic genera neurocallis, ochropteris and platyzoma were included. Among the 106 pteris species examined, 43 40% are diploid, the most common cytotype in this genus figure 1. Both species are similar in having 1pinnateimparipinnate laminae, entire and linear pinnae, and free venation with simple or furcate veins. Among the remaining 40 polyploid species 38%, there are triploids, 26 tetraploids, and 1 octoploid. Dont think this is any type of insect problem or any type of problem, its a. The second sub phenon has free veins in the lobes comprising species, which are widely distributed in. Our aim was to test whether as hyperaccumulation occurs in other fern species, and whether p. Pityrogramma, or the gold and silverbacked ferns, consists of about 16 tropical species, which are occasionally. The website also provides access to a database and images of herbarium specimens found at the university of south florida and other herbaria.
The second sub phenon has free veins in the lobes comprising species. In an 18d hydroponic experiment with varying concentrations of arsenate and phosphate, p. Department of agriculture agricultural research service. Pteris bahamensis is often treated as a variety of p. They like a steady supply of water and average temperatures, but will quickly show signs of stress in very dry environments. University of california publications in geological sciences 76. Lay and collie, and other officers of the expedition, during the voyage to the pacific and behrings 19783050494. Distinguished from all other pteris indigenous and naturalised in new zealand except p. Arsenic distribution and speciation in the fronds of the. Furthermore, several infrageneric morphological classifications have. The information presented is presently mostly based on herbarium sheet labels and. Pteris vittata was the first identified arsenic as hyperaccumulator.
Pteris longifolia longleaf brake pteris lydgatei lidgates brake pteris multifida spider brake pteris. Media in category pteris the following 14 files are in this category, out of 14 total. The atlas of florida plants provides a source of information for the distribution of plants within the state and taxonomic information. The mechanisms of arsenic as hyperaccumulation in pteris vittata, the first identified as hyperaccumulator, are unknown. Arching pale green fronds, each with 15 pairs of simple or forked pinnae. Pdf the brake fern genus pteris belongs to the pteridaceae subfamily. Pteris is a genus of ferns usually sold as houseplants because they are native primarily in tropical and subtropical regions of the world.
The key to growing good pteris is to provide enough humidity and bright, filtered light to keep the plant thriving. Pteris longifolia wikispecies, free species directory. The type specimen was collected in china by pehr osbeck. Systematic revision of pteris and ecology of ferns in. Collaborative floristic effort of north american botanists plants. Of the 78 chinese species of pteris, most occur mainly in s and sw china, with a few species in e china south of the qin ling. Pteris vittata commonly known as brake fern was discovered to have the ability to hyperaccumulate absorb large amounts of arsenic from soil.
The largest genus, pteris brakes, consists of about 300 species distributed throughout tropical and warm temperate parts of the world and is known for the large number of hybrids between various species. The picture above is a close up of a leaflet displaying what is called spores. We do not intend the plant list to be complete for names of infraspecific rank. A comparison of arsenic mobility in phaseolus vulgaris, mentha. Interestingly, several lithophytic pteris species in other sections also possess coarse reticula on distal faces, such as p. We investigated the interactions of arsenate and phosphate on the uptake and distribution of as and phosphorus p, and as speciation in p. Pteris vittata is a hyperaccumulator of arsenic, and its sporophyte and gametophyte tissues. Spore morphology in the pteris cretica complex, including pteris brasiliensis, p. Arsenic hyperaccumulation by different fern species zhao. Mechanisms of arsenic hyperaccumulation in pteris vittata. Other plants such as indian mustard and tomato have also been. The sporophyte of the fern pteris vittata is known to hyperaccumulate arsenic as in its fronds to 1% of its dry weight.
Pteris ferns have fine leathery foliage are relatively easy to grow in a well lit but shaded area. Molecular phylogeny and biogeography of the fern genus. The plant list includes a further 82 scientific plant names of infraspecific rank for the genus pteris. However, the relationships between the type species of the genus pteris, p. These materials are freely provided for instructional and educational purposes. Furthermore, several infrageneric morphological classifications have been proposed, but. These are primarily included because names of species rank are synonyms. These smaller species are often called table ferns. The spores of pteris cretica complex pteridaceaepteridophyta in. The type of pteris multifida is from a cultivated plant at the botanical garden in paris.
Usda, ars, germplasm resources information network. It concentrates arsenic in aboveground biomass, which is a primary requirement for efficient phytoremediation. Outer spore layers of adiantum pedatum and pteris vittata outer spore layers of adiantum pedatum l. Pdf background and aims pteris pteridaceae, comprising over 250. Pteris cretica, commonly called cretan brake fern, ribbon fern or table fern, is a slowgrowing evergreen fern that typically rises to 1824 tall and as wide.
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