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多基因家族经历着生与死的进化并因此有助于生物的创新性进化。APETALA2类基因属于AP2转录因子家族中euAP2分支。该类基因具有特征性基元,并存在于蕨类植物、裸子植物和被子植物中。系统发育分析表明这类基因经历了生与死的进化。原位杂交和RT-PCR结果表明水稻的5个APETALA2类基因在表达模式上既是冗余又是不同的。根据基因系统发育树和表达模式讨论了这些基因的功能。
Multi-gene families experience the evolution of life and death and thus contribute to the biological evolutionary innovation. The APETALA2 gene belongs to the euAP2 branch in the AP2 transcription factor family. Such genes have characteristic motifs, and exist in ferns, gymnosperms and angiosperms. Phylogenetic analysis shows that such genes have undergone the evolution of life and death. In situ hybridization and RT-PCR results showed that the five APETALA2-like genes in rice were both redundant and different in expression pattern. The function of these genes is discussed based on the phylogenetic tree and expression patterns.