Assertion: stoma's guard cell | /r/CapableOf | shrink of the guard cells
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Source sentences:
text: Ion release from guard cells causes stomatal pore closing: Other ion channels have been identified that mediate release of ions from guard cells, which results in osmotic water efflux from guard cells due to osmosis, shrinking of the guard cells, and closing of stomatal pores (Figures 1 and 2).