ibclogo XVI International Botanical Congess

Abstract Number: 5368
Session = 11.10.6


METHYL CYCLOPENTADIENYL MANGANESE TRICARBONYL (MMT), PLANT UPTAKE AND EFFECTS ON METABOLISM


B. N. Smith, A. R. Jones, C. M. Lytle, and L. D. Hansen (Dept. of Botany & Range Science, Brigham Young University, Provo, UTAH 84602, USA)


In the USA and Canada, MMT is currently added to gasoline to replace tetraethyl lead as an anti-knock fuel additive. Mn concentrations in roadside soil and plants were correlated with distance from the roadway, traffic volume, plant type and microhabitat. Aquatic angiosperms, either submerged or emergent, had the highest levels of Mn. Radish seedlings were treated with different levels of manganous chloride (0 to 10,000 ppm). Metabolic heat rates (q) and respiration rates (RCO2) indicated a concentration-dependent Mn sensitivity to higher temperatures and decreased predicted growth rates (RSG) at all temperatures.

HTML-Version made 7. July 1999 by Kurt Stüber