| Abstract Detail
Recent Topics Posters Sanders, Heather [1], Karrfalt, Eric [2], Rothwell, Gar W. [1]. On vascular development in the leaves of Isoetes. Auxin flow lays down the pattern of vascular tissue differentiation. Serial sections of Isoetes tuckermanii show that tracheids differentiate acropetally into the leaf traces. This indicates that the microphyllous leaves of Isoetes act as a permanent sink to auxin. In angiosperms, auxin flows from the developing leaf primordium towards the stele, correspondingly, xylem differentiation occurs from the base of the leaf primordium, basipetally. The difference in physiology may reflect the different evolutionary origin of microphylls.
Log in to add this item to your schedule
1 - Ohio University, Department of Environmental & Plant Biology, Porter Hall, Richland Avenue, Athens, Ohio, 45701-2979, USA
2 - 10261 Fry Road, McKean, PA, 16426, U.S.A
Keywords:
vascular development
Isoetes
microphylls.
Presentation Type: Recent Topics Poster
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P79001
Abstract ID:2478 |
