Tissue localization of BdLAC5 and BdLAC6 transcripts. Transcripts of BdLAC5 and BdLAC6 were detected by in situ hybridization at the heading and flowering stages (EFS). A, Cross sections of the second internode were labeled with BdLAC5 antisense probes. B, BdLAC6 antisense probes. C, BdLAC5 sense probes. D, BdLAC6 sense probes. E, Cross section of internodes without labeled probes. F, Whole-mount leaves labeled by BdLAC5 antisense probes. Black arrows show immunolabeling signal. White arrows show veins. Bars = 100 μm.