Together with Jeffrey Doyle, Douglas Soltis, Pamela Soltis and Jonathan Wendel, Dan Crawford recently edited an issue for Philosophical Transactions B, entitled ‘Contemporary and future studies in plant speciation, morphological/floral evolution and polyploidy: honouring the scientific contributions of Leslie D. Gottlieb to plant evolutionary biology’.
The publication recently interviewed Dan about the issue, available here.
In 2014, Paleobotany graduate student Carla J. Harper was a contributor in a symposium of the Mycological Society of America that focused on wood rotting fungi. Carla was the only graduate student that was asked to participate.
Paleobotany Senior Curator Edith Taylor has learned that a new Permian plant fossil has been named for her in honor of her long standing, high quality research with Antarctic fossil plants.
In 2014 a new fossil plant genus (pollen cone Ediea) was named for Dr. Edith L. Taylor in honor of her numerous contributions to the study of fossil plants from Antarctica.
At the International Paleobotany Conference in Tokyo, Japan (2013), a special symposium was dedicated to Dr. Thomas N. Taylor; the presentations were subsequently published in a special edition of the International Journal of Plant Sciences.
The Division of Paleobotany concluded a successful field season in Antarctica during October and November in 2012. From this expedition more than 5000 lbs of fossil plant materials were collected, and are currently the focus of research projects by members of the Division.
A remarkable find from plant fossils that date to approximately 240 million years ago predates the last known plant-fungi association that occurs in specialized root structures, termed nodules, by 100 million years. The find indicates that this specialized form of symbiosis has an ancient origin.
Only the roots of a few families of modern coniferous plants contain fungi that form this symbiotic association with the plant. In this association – called a mycorrhizal association -- the fungus obtains carbon from the plant and the plant obtains certain types of nutrients from the fungus.
Although the fossil record of these families can be traced back into the early Mesozoic era, the oldest fossil evidence of root nodules previously came from the Cretaceous era.
Andrew Schwendemann, a doctoral student mentored by Thomas N. Taylor, studied fossil plant root nodules containing fungi. The preservation is so extraordinary that it allowed Andrew to examine the individual cells of both the root nodules and fungi.
Close examination showed that mutual associations between the conifer root nodules and fungi date back to at least the Mesozoic era, the period during which most of the modern conifer families first appeared.
The research paper was published in the Proceedings of the National Academy of Sciences today.
Andrew spent this past December and January in the Transantarctic Mountains in Antarctica collecting plant fossils like those from which these nodules were described. He and other research team members anticipate that the 10,300 pounds of fossils that were collected during the expedition and transported back to KU to be deposited in at the KU Biodiversity Institute will yield additional significant discoveries.
The research was funded by the National Science Foundation.