Auxin regulates lateral meristem activation in developing gametophytes of ceratopteris richardii michele gregorich and roxanne fisher abstract: this study investigates the auxin regulation of lateral meristem activation in the gametophytes of the fern ceratopteris richardii brongn exogenous auxin in the form of a-naphthaleneacetic acid or 2,4. C-fern is a specially derived cultivar of a tropical fern, ceratopteris richardii over a three-week period, c-fern develops from a single-celled spore into a complex vascular plant with leaves and roots. Ceratopteris thalictroides is an amphibic fern found in many tropical regions of the world in shallow waters and on muddy ground a third species, ceratopteris richardii, can only be discerned from c thalictroides and c cornuta by the number of spores per sporangium moreover. Ceratopteris richardii has been well investigated building a body of knowledge which combined with the genomic and biochemical information available for other plants will progress our understanding of wall diversity and its impact on evolution and development.
954 the effects of sugars and ethylene on apospory and regeneration in ceratopteris richardii apogamy nor apospory, even under the optimum condi. Todo ceratopteris richardii is also known as triangle waterfern wasserpflanzen sind ein fester bestandteil der meisten aquarien beim aquascaping, dem naturaquarium, biotop-aquarium oder dem gesellschaftsaquarium sind wasserpflanzen nicht. Characterization of mads homeotic genes in the fern ceratopteris richardii , mads genes were newly sought from the fern ceratopteris richardii (fig 1) a study of this fern is important because of its tractable genetics, its relatively rapid. Grin-global help: about grin-global: check other web resources for ceratopteris richardii brongn : flora of north america: collaborative floristic effort of north american botanists plants: usda-nrcs database of plants of the united states and its territories. Dent that the fern ceratopteris richardii provides remarkable opportunities for developmental, physiological, genetic, and, with any luck, molecular studies of plant processes as diverse as sex deter-mination, pattern formation, photomor. Protocol: genetic transformation of the fern ceratopteris richardii through microparticle bombardment.
Abstract —in the homosporous fern ceratopteris richardii, sex is not determined chromosomally rather, hermaphroditic gametophytes produce a hormone called antheridiogen, which induces maleness in undifferentiated gametophytes the percentage of males increases with increasing density of gametophytes, presumably due to the cumulative effect. Title: plant development & the fern life cycle using ceratopteris richardii created date: 20160808214609z.
Biological factors involved in reproductive barriers between two divergent races of ceratopteris richardii were investigated we used a combination of spore germination rates, qtl analysis of spore germination rates, and transmission ratio distortion (trd) of 729 rflps, aflps, and isozyme markers distributed across the genome on the basis of. Picture of ceratopteris cornuta with which cpteridoides bears similarity species name: ceratopteris pteridoides is sexual and diploid and is incompletely reproductively isolated from the diploid c richardii hybrids synthesized by l g hickok (1977) result in 40% viable spores. Plant development & the fern life cycle: using ceratopteris richardii renzaglia, karen s and others american biology teacher, v57 n7 p438-42 oct 1995 presents laboratory activities focusing on the development of sexually mature gametophytes from single-celled spores. 3 ceratopteris richardii: lower taxa ceratopteris pteridoides (hooker) hieronymus ceratopteris richardii brongniart ceratopteris thalictroides (linnaeus) brongniart related links (opens in a new window) treatments in other floras @ wwweflorasorg.
142 brittonia [vol 26 table ii sterile fro~td shape and dissection in ceratopteris (all figures are in percent) c thalictroides c cornuta c pteridoides c richardii. Proc natl acad sci usa vol 95, pp 6222-6227, may 1998 evolution characterization of mads homeotic genes in the fern ceratopteris richardii. The unicellular spores of the fern ceratopteris richardii are about 100 um in diameter calculate the surface-area-to-volume ratio of a cube whose sides are 100 um in length to approximate the surface-area-to-volume ratio of the fern spore cell. Ceratopteris richardii is infrequently cultivated for aquaria but is more commonly used as an experimental 'model' organism for studies of plant physiology younger leaves are edible ceratopteris cornuta photo: sl winterton.
⚠ version 1 of the plant list has been superseded this name is in version 11 of the plant list, record tro-26600076, with some changes the plant list pteridophytes pteridaceae ceratopteris. As in all ferns, gametophytes and sporophytes of ceratopteris are independent stages of the life cycle, and so c richardii and close relative ceratopteris thalictroides have been used extensively to describe spore germination (salmi, bushart. Title: ceratopteris richardii: applications for experimental plant biology created date: 20160810014526z.
Gene expression associated with apogamy commitment in ceratopteris richardii authors authors and affiliations angela r cordle subtracted cdna library that represents genes with increased expression during apogamy commitment in the fern ceratopteris richardii. Statistics the plant list includes 27 scientific plant names of species rank for the genus ceratopterisof these 5 are accepted species names. Original article a fern aintegumenta gene mirrors baby boom in promoting apogamy in ceratopteris richardii. 3 ceratopteris richardii brongniart, dict class hist nat 3: 351 1823 ceratopteris deltoidea benedict plants floating or rooted sterile leaves lanceolate to deltate to ovate.