Figure 4
From: Male reproductive development: gene expression profiling of maize anther and pollen ontogeny
Transcripts switched on or off between meiotic and post-meiotic stages. (a) Mitosis-related: transcripts on in the A1.0 and A1.5 stages but decreasing or off in the A2.0 stage and off in the remaining stages. (b) Persistent through meiosis: transcripts on from the A1.0 to A2.0 stages then decreasing or off in the quartet stage and off in the remaining stages. (c) Post-meiotic: transcripts off from the A1.0 to A2.0 stages then on for the next three stages. (d) Microspore maturation: transcripts off from the A1.0 to the quartet stage then on for the two microspore stages. (e) Binucleate microspore peak: transcripts only on in the BM stage (ignoring pollen). (f) Meiotic valley: transcripts on in all stages except the A2.0 anther and quartet stages.