List of protein spots with differential expressions between superior and inferior spikelets in 3 grain-filling stages.

Note:aproteins number,bprotein spots number correspond to those on 2-DE gels shown in Fig. 3;caccession number;dtheoretical MW (kDa) and pI.ematch peptides;fchanges on protein spots in superior spikelets compared to inferior spikelets; UR: protein upregulated in inferior spikelets as compared to superior spikelets; DR: protein downregulated in inferior spikelets as compared to superior spikelets; EGS: early grain-filling stage, MGS: mid-grain-filling stage, LGS: late grain-filling stage;gprotein spot identified by MALDI-TOF-MS;hprotein spot identified by LC-ESI-MS/MS.