منابع مشابه
Carnivorous Utricularia: the buckling scenario.
We review recent results about the functioning of aquatic carnivorous traps from the genus Utricularia. The use of high speed cameras has helped to elucidate the mechanism at the origin of the ultra fast capture process of Utricularia, at a millisecond time scale. As water is pumped out of the trap, pressure decreases inside the trap and elastic energy is stored due to the change of shape of th...
متن کاملA dynamical model for the Utricularia trap.
We propose a model that captures the dynamics of a carnivorous plant, Utricularia inflata. This plant possesses tiny traps for capturing small aquatic animals. Glands pump water out of the trap, yielding a negative pressure difference between the plant and its surroundings. The trap door is set into a meta-stable state and opens quickly as an extra pressure is generated by the displacement of a...
متن کاملMechanical model of the ultrafast underwater trap of Utricularia.
The underwater traps of the carnivorous plants of the Utricularia species catch their prey through the repetition of an "active slow deflation followed by passive fast suction" sequence. In this paper, we propose a mechanical model that describes both phases and strongly supports the hypothesis that the trap door acts as a flexible valve that buckles under the combined effects of pressure force...
متن کاملAntibacterial activity of various leaf extracts of Merremia emarginata.
OBJECTIVE To investigate the antibacterial activity and phytochemical screening of the aqueous, methanol and petroleum ether leaf extracts of Merremia emarginata (M. emarginata). METHODS The antibacterial activity of leaf extracts of M. emarginata were evaluated by agar well diffusion method against four selected bacterial species. RESULTS The presence of tannins, flavonoids, amino acids, s...
متن کاملAntihyperglycemic effect of polyphenols from Acerola (Malpighia emarginata DC.) fruit.
A crude acerola polyphenol fraction (C-AP) was prepared by subjecting an acerola extract to a C18 cartridge column, and eluting the adsorbed fraction with ethanol containing 10% of acetic acid. C-AP appeared in a previous study to have an inhibitory effect on alpha-glucosidase and particularly on maltase activities. To elucidate the antihyperglycemic effect of C-AP further, we examined the regu...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 1909
ISSN: 1095-8290,0305-7364
DOI: 10.1093/oxfordjournals.aob.a089222