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. 2018 Apr 6;9:452. doi: 10.3389/fpls.2018.00452

FIGURE 1.

FIGURE 1

A schematic representation of heavy metal stress signaling cascade in plants and the existing cross-talk among the networks of plant–microbe–metal interaction. These signaling pathways include MAPKs, calcium, ROS, and hormone signaling molecules that mediate signal transduction to enhance the expression of stress-responsive genes.