range of structural and functional variation in the trap of Utricularia.

Range of structural and functional variation in the trap of Utricularia by Francis Ernest Lloyd Download PDF EPUB FB2

The range of structural and functional variation in the traps of Utricularia 1) () pl. Lloyd, F.E. Lloyd, The mechanism of the water-tight door of the Utricularia trap Plant Physiology 4: () Lloyd, F.E. Lloyd, The origin and nature of the mucilage in the cacti and in certain other plants Am.

Jour. Bot. 6 Cited by: 7. The range of structural and functional variety in the traps of Utricularia and Polypompholyx Francis E. Lloyd, Macdonald Professor of Botany, Mc Gill University, Montreal. Macdonald Professor of Botany, Mc Gill University Montreal With 16 figures in the text. by: 6. The range of structural and functional variation in the traps of Utricularia.

Fl The cytochemical staining and measurement of protein with mercuric bromophenol blue. well within the range of many other Utricularia species (see Table 1 in Płachno et al.

), in spite of being three or four-layered (“traps in some clones of U. dichotoma (a species evolutionarily more advanced than U. volubilis) also possess trap walls which are three cell layers thick” Płachno et al.p.

Trap features distinguishing Utricularia species The range oftrap variation was already intensively studied by Lloyd (, ). The shape and size of the traps, as well as the position of the mouth, appendages and. of two to five cell layers. A distinct variation in the trap wall structure occurred not only within one generic Utricularia section, but even within one species and also different parts of one trap.

Using an position sensor to monitor trap thickness showed that in two clones of Utricularia dichotoma. Based on these analyses, we were able to assign the 19 investigated Utricularia species to two functional trap principles (active and passive).

The 18 species with active traps were further Cited by:   Then, Utricularia deflates slowly, thanks to the activity of membranar bifid glands, which actively pump the water out of the trap. Actually, the pumping is based on the transport of chloride ions, which creates a local osmotic gradient in the trap membrane and an accompanying flux of water [ 1, 2 ].Cited by: 8.

For the first time, a representative survey of different traps from both subgenera (Utricularia and Polypompholyx) is on scanning- and transmission electron microscopy, traps of 14 species of Utricularia (out of species) representing 11 sections (out of 35 sections).

Plachno et al. studied the relationship between trap anatomy and its firing-resetting J. Soc. nine Australian Utricularia species and found that the trap. The size and shape of traps of Utricularia vulgaris L. Functional Ecology 5: Measuring investment in carnivory: seasonal and individual variation in trap number and biomass in Utricularia vulgaris L.

Functional significance of external trap morphology in aquatic Utricularia While this morphological variation is well documented, little is known about its functional significance.

to test the aquatic-appendage prey-capture hypothesis with a range of ubiquitous prey animals that exhibit differing feeding and locomotory behaviours Author: Corin Gardiner.

Trap diameters range from to 3 mm [5,17]. The lenticular Utricularia trap (figure 1a and electronic supplementary material, S1) works with a two-phase mechanism [2,3]. During the first slow phase, which lasts about 1 h, internal glands actively pump water out of the trap interior, so that elastic energy is stored in the trap body owing to a Cited by: Utricularia multifida (previously Polypompholyx multifida) has suction traps like all the other Utricularia species (Lloyd ) in the rest of Utricularia.

Now that another type of trap, which is in some ways intermediate, is In closing this account one cannot but wonder at the astonishing variety of trap structure. Utricularia) comprise nearly all aquatic bladderworts, and the 35 species in section Utricularia share a common trap architecture (the ‘ Utricularia vulgaris trap type’) (Lloyd; Taylor ) that will be described in detail with all its structural and functional variations in this by:   The transition from the first to the second mousetrap is not analogous to a Darwinian process because: (1) a number of separate steps are required to make the transition; (2) each step has to fall within a narrow range of tolerance to get to the target trap; and (3) function is lost until the transition is completed.

more—Types, structural models, biological functions, and formation routes. New J. Sci.1– Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MDUSA. *E-mail: [email protected] Utricularia Christopher Whitewoods What is Utricularia.

Utricularia is odd. Utricularia reniformis -Hil. is endemic to the Brazilian Atlantic Forest, growing as a terrestrial species in wet grasslands or as an epiphyte in moist habitats [1,24].Some but limited information is available on the U.

reniformis nuclear genome, such as its high levels of polymorphism [], its genome size of Mb (which is an intermediate size in comparison to other Utricularia) and Author: Saura R. Silva, Ana Paula Moraes, Helen A. Penha, Maria H.

Julião, Douglas S. Domingues, Todd P. Thus, the enzymes could have entered the trap from the ambient solution, rather than have been secreted within the traps.

In four aquatic Utricularia species, the pH of the fluid within the trap was between 49 and 51, a narrow range which may be an optimum for exoenzyme functioning (Sirová et al., ).Cited by: george william Scarth, francis ernest Lloyd.

An elementary course in general physiology. Wiley & Sons. The range of structural and functional variation in the trap of Utricularia. Further studies in periodic precipitation. Nº 71 de McGill University publications: Botany. The Carnivorous. Variation, according to evolutionary biologist Stephen Jay Gould, is “nature's only irreducible essence” ([ 1 ][1]).

The variation and diversity of shapes in nature is a central focus of both evolutionary and developmental biologists. Unified under the unlikely roof of “evolutionary developmental biology,” the ultimate goal of these scientists is to understand how variation Author: Derek E.

Moulton, Alain Goriely.The Genus Utricularia: A Taxonomic Monograph is a monograph by Peter Taylor on the carnivorous plant genus Utricularia, the was published in by Her Majesty's Stationery Office (HMSO) as the fourteenth entry in the Kew Bulletin Additional was reprinted for The Royal Botanic Gardens, Kew in Author: Peter Taylor.

Based on comparative biomechanical and functional-morphological studies, we can distinguish between different Utricularia trap and trapdoor movement types, referencing differences in functional principles (suction traps vs.

passive lobster traps, the latter only found in U. multifida), entrance morphology (short vs. tubular), angles between the.