announcements for biotechnology lab –labelling gus stained seedlings –hyperladder for water...
Post on 21-Dec-2015
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Announcements
• For biotechnology lab– Labelling GUS stained seedlings– Hyperladder
• For water status lab 1– Measurement of relative water content
23.14 Simplified model for ABA signaling in stomatal guard cells
ABA mediated stomatal closure mechanism:
Water deficit → ABA → stomatal closureABA → ROS → Ca2+↑ → Cl- efflux/membrane potential depolarization → K+ efflux/K+ influx is blocked → ψp decrease/water loss → volume reduction → stomatal closure
ABA → NO/S1P → cADP ribose/IP3 → Ca2+ → pm H+-ATPase inhibited → H+ gradient dissipation (pH) → K+ efflux
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