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    Author(s): B. R. LockhartE. S. GardinerT. D. LeiningerM. S. DevallA. D. Wilson; K. F. Connor; P. B. HamelN. M. Schiff
    Date: 2017
    Source: Photosynthetica
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: View PDF  (633.0 KB)

    Description

    Physiological responses to light availability and soil flooding on Lindera melissifolia (Walt.) Blume were studied. Shrubs
    were grown under 70, 37 or 5% of full sunlight with either 0, 45, or 90 d of soil flooding. We measured leaf photosynthetic
    rate (PN) to test the hypothesis that soil flooding reduces PN in L. melissifolia following shrub acclimation to low light
    availability. Results showed that light availability and soil flooding interacted to affect PN. In the 0 d and 45 d flooding
    regimes (flood water removed 36–39 d prior to measurement), PN was similar between shrubs receiving 70% or 37% light,
    and these shrubs had 147% greater PN than shrubs receiving 5% light. Shrubs receiving 90 d of soil flooding had similar
    low rates of area-based PN regardless of light level. Similar PN between 0 d and 45 d flooded shrubs indicated physiological
    recovery following removal of flood water.

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    Citation

    Lockhart, B. R.; Gardiner, E. S.; Leininger, T. D.; Devall, M. S.; Wilson, A. D.; Connor, K. F.; Hamel, P. B.; Schiff, N. M. 2017.Light availability and soil flooding regulate photosynthesis of an imperiled shrub in lowland forests of the Mississippi Alluvial Valley, USA. Photosynthetica. 55(3): 411-420. 10 p https://doi.org/10.1007/s11099-016-0655-2.

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    Keywords

    blade area, blade mass, interaction, plasticity, pondberry

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