The present invention relates to expression cassettes comprising
transcription regulating sequences with constitutive expression profiles
in plants obtainable from Arabidopsis thaliana genes At5g17920,
At3g03780, At2g01100, At2g34770, At5g61560, At4g00830, At3g10220,
At4g38520, At3g11110, At2g47170, At1g64090, At5g60690, At1g76350,
At1g76580, At1g31930, At5g18230, At1g20970, or At4g35620.