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Browsing by Subject "Desmanthus illinoensis"

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    Water potential gradient facilitated interplant transfer via Desmanthus illinoensis.
    (2009-12) Mahmoodi, Cyrus E.
    Water potential gradients have been largely ignored as a primary factor capable of influencing interplant transfer even though there was evidence of hydraulic conductivity across the biotrophic plant fungi interface. Using two fluorescence tracer molecules, phorwite and rhodamine, a direct transfer pathway was observed and direct transfer quantified between two Illinois Bundleflower (Desmanthus illinoensis) plant root systems linked by arbuscular mycorrhizal (AM) hyphae. Three water potential gradients were tested: (i) receiver plant water-stressed -0.25 ±.03 MPa, (ii) no water stress, and (iii) donor plant water-stressed. When the receiver plant was water-stressed, rapid (< 18 h) dye transfer occurred, obeying the source/sink paradigm often utilized in other interplant nutrient transfer studies.