DREB2B and SLR1/DELLA are up-regulated in the early-developing anther exposed to LT. Expression levels of DREB2B (Os05g0346200) and SLR1/DELLA (Os03g0707600) in cv Sasanishiki anthers at premeiotic, meiotic, uninucleate, binucleate, and trinucleate pollen stages were determined by real-time quantitative RT-PCR analysis. The expression level of ACTIN1 (Os03g718100) was used as an internal standard, and each numeral in the control indicates the average expression level. A set of expression levels for DREB2B and SLR1/DELLA was calculated as a ratio relative to the control at the premeiotic stage. Orange columns, Control samples; blue columns, LT treatment samples.