title: Mechanisms contributing to differential sensitivities of plants to SO2.
abstract: SO2-fumigation experiments were conducted with plants of pea (Pisum sativum) and corn (Zea mays) recognized to be, respectively, sensitive and tolerant to the gas. Accumulation of inorganic sulfur in the tissues revealed that the pea takes up considerably greater amounts of SO2than corn. Porometer measurements and transpiration coefficients show that this greater SO2uptake is partly related to the lower leaf diffusion resistance of peas. Additional internal sinks for SO2uptake are discussed in order to give a complete explanation of the differential SO2uptake of the two species.
authors.affiliation: Institut für Pflanzenökologie der Justus Liebig-Universität, Heinrich-Buff-Ring 38, D-6300, Gießen, Federal Republic of Germany.
authors.forename: H
authors.initials: H
authors.lastname: Klein
authors.affiliation: Institut für Pflanzenökologie der Justus Liebig-Universität, Heinrich-Buff-Ring 38, D-6300, Gießen, Federal Republic of Germany.
authors.forename: H-J
authors.initials: HJ
authors.lastname: Jäger
authors.affiliation: Botanisches Institut der Universität Marburg, Lahnberge, D-3550, Marburg/Lahn, Federal Republic of Germany.
authors.forename: W
authors.initials: W
authors.lastname: Domes
authors.affiliation: Biological School of Sciences, Universiti Sains Malaysia, Penang, Malaysia.
authors.forename: C H
authors.initials: CH
authors.lastname: Wong