Plant Mineral Nutrient Acquisition
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Questions and Answers

What is the common motif that is the signature for K+ selectivity?

  • Voltage-sensing region within S4
  • S1-S6 domains
  • Proliferation of roots into the soil volume
  • P-loop (correct)
  • Which region contains the conserved voltage-sensing region within the potassium transporters?

  • S4 (correct)
  • H5
  • S5-S6
  • P-domain
  • What drives the mass flow of the soil solution to the root, influencing potassium uptake?

  • Plant root potassium transporters
  • Transpiration rate of the plant (correct)
  • Release of nonexchangeable K+
  • Proliferation of roots into the soil volume
  • Which domain contains the amphipathic P-domain (H5) in the potassium transporters?

    <p>Between S5 and S6</p> Signup and view all the answers

    What factor increases surface area and influences potassium acquisition?

    <p>Proliferation of roots into the soil volume</p> Signup and view all the answers

    What governs ion permeation and selectivity in plant root potassium transporters?

    <p>Amphipathic P-domain (H5)</p> Signup and view all the answers

    Which domain in the potassium transporters contains the conserved voltage-sensing region?

    <p>S4 domain</p> Signup and view all the answers

    What is the signature motif for K+ selectivity in plant root potassium transporters?

    <p>P-loop</p> Signup and view all the answers

    Which factor influences the rate of potassium uptake across root plasma membrane?

    <p>Transpiration rate of the plant</p> Signup and view all the answers

    What increases surface area and influences potassium acquisition in plants?

    <p>Proliferation of roots into the soil volume</p> Signup and view all the answers

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