Molecular functions of cold-responsive and dehydration-responsive genes in rice plants. Heat maps of up-regulated (red) or down-regulated (blue) molecular functional classes indicate relative abundance (%; shading in boxes) in cold-treated (C1 and C2) and dehydration-treated (D2 and D3) plants. Heat maps illustrate the log ratios of cold- or dehydration-responsive genes in representative molecular classes of photosynthesis (A), helicases (B), and dehydrin/LEA proteins (C). psaE, PSI subunit IV; psaF, PSI subunit III; psaG, PSI subunit V; psaH, PSI subunit VI; psbP, PSII oxygen-evolving enhancer protein 2; psbQ, PSII oxygen-evolving enhancer protein 3; psbY, PSII PsbY protein.