To understand the molecular mechanisms intrinsic to reproductive organ development a cDNA microarray, fabricated from flower bud cDNA clones, was used to isolate genes, which are specifically expressed during the development of the anther and pistil in Lotus japonicus. Cluster analysis of the microarray data revealed 21 and 111 independent cDNA groups, which were specifically expressed in immature and mature anthers, respectively. RT-PCR was performed to provide a direct assessment of the accuracy and reproducibility of our approach. Confirmation of our results suggests that cDNA microarray technology is an effective tool for identification of novel reproductive organ-specific genes.
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