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Gas Exchange and Water Balance of a Mistletoe Species and Its Mangrove Hosts by G. Goldstein; F. Rada; L. Sternberg; J. L. Burguera; M. Burguera; A. Orozco; M. Montilla; O. Zabala; A. Azocar; M. J. Canales; A. Celis is a Environmental Science article available to read on EtoBox.

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The gas exchange and water relations of the hemiparasite Pthirusa maritima and two its mangrove host species, Conocarpus erectus and Coccoloba uvifera, were studied in an intertidal zone of the Venezuelan coast. Carbon uptake and transpiration, leaf osmotic and total water potential, as well as nutrient content in the xylem sap and leaves of mistletoes and hosts were followed through the dry and wet season. In addition, carbon isotope ratios of leaf tissue were measured to further evaluate water use efficiency. Under similar light and humidity conditions, mistletoes had higher transpiration rates, lower leaf water potentials, and lower water use efficiencies than their hosts. Potassium content was much higher in mistletoes than in host leaves, but mineral nutrient content in the xylem sap of mistletoes was relatively low. The resistance of the liquid pathway from the soil to the leaf surface of mistletoes was larger than the total liquid flow resistance of host plants. Differences in the daily cycles of osmotic potential of the xylem sap also indicate the existence of a high resistance pathway along the vascular connection between the parasite pathway along the vascular connection

Who reads Gas Exchange and Water Balance of a Mistletoe Species and Its Mangrove Hosts?

Author

G. Goldstein; F. Rada; L. Sternberg; J. L. Burguera; M. Burguera; A. Orozco; M. Montilla; O. Zabala; A. Azocar; M. J. Canales; A. Celis

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC (ISSN 0029-8549)

Published

1989

Language

EN

Field

Environmental Science (Physical Sciences)