Lingle, Mathew A. , Diamond, Hope L. , Swatzell, Lucinda J. .
Wax glands on Cheilanthes lanosa gametophytes.
Cheilanthes lanosa gametophytes are found on arid sandstone, shale, slate, and granite rock outcrops. The sporophyte has morphological features that facilitate survival in an arid environment. However, the gametophytes are composed of a single layer cells with no observable morphological characteristics that protect them from desiccation. In a recent study, C. lanosa gametophytes produced trichome-like structures that secreted an unidentified exudate. In this study, light microscopy was used to characterize these structures and the nature of the exudate. Results show that these structures exude a wax-based compound. Exudate quantity and basal cell size varied, but the morphology of the structures was constant and distinguishable from that of trichome-like structures in other xerophytic species. In conclusion, C. lanosa produces readily distinguishable trichome-like structures that appear to be wax glands. These structures exude a waxy substance that may partially protect it from desiccation.
1 - Southeast Missouri State University, Biology, MS 6200, One University Plaza, Cape Girardeau, Missouri, 63701, USA
Presentation Type: Poster
Location: Special Event Center (Cliff Lodge)
Date: Tuesday, August 3rd, 2004
Time: 12:30 PM