CO2 signaling in guard cells: calcium sensitivity response modulation, a Ca2+-independent phase, and CO2 insensitivity of the gca2 mutant

Leaf stomata close in response to high carbon dioxide levels and open at low C0₂. CO₂ concentrations in leaves are altered by daily dark/light cycles, as well as the continuing rise in atmospheric CO₂. Relative to abscisic acid and blue light signaling, little is known about the molecular, cellular,...

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