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Abstract Detail



Developmental and Structural Section

Downing, Katie [1], Hanes, Margaret [2].

A S.E.M. survey of Carnivorous North American Purple Pitcher Plant Leaves, Sarracenia purpurea (Sarraceniaceae).

The carnivorous pitcher plant, Sarracenia purpurea is found throughout the United States and Canada and has modified leaves adapted to lure, trap, and digest insects. Four general zones of the pitcher were examined using scanning electron microscopy; the nectar roll (peristome) along the perimeter of the opening, the inside surface of the lid, the waxy zone just below the lid, and the digestive zone. Within the digestive zone, areas above and below the water line were studied to highlight cells in contact with fluid and accumulated prey. Samples were prepared fresh and chemically fixed. Along the peristome numerous nectar glands were identified. In addition to two forms of downward pointing trichomes on the pitcher lid, nectar glands, stomata, and other umbos were present. Inside the pitcher, within the waxy zone, cells appear smooth and nondescript, though nectar glands are occasionally visible. In the digestive zone, where epicuticular waxes were absent, cells are enlarged suggesting a digestive gland. These structures become more frequent below the water line. Also in this zone, very small downward pointing trichomes are present.

Broader Impacts:


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1 - Eastern Michigan University, Biology/Koopman, 316 Mark Jefferson, Ypsilanti, MI, 48197, USA
2 - Eastern Michigan University, Biology, 441 Mark Jefferson Science Complex, Ypsilanti, MI, 48197, United States

Keywords:
Sarracenia
SEM
trichomes
Nectar glands
Digestive zones.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PDS014
Abstract ID:600
Candidate for Awards:Developmental and Structural Section best poster


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