14-3-3 proteins function as major regulators of primary metabolism and cellular signal transduction in plants. However, their involvement in plant defense and stress responses is largely unknown. In order to better address functions of the rice 14-3-3/GF14 proteins in defense and abiotic stress responses, we examined the rice GF14 family that comprises eight numbers. The phylogenetic comparison with the Arabidopsis 14-3-3 family revealed that the majority of rice GF14s might have evolved as an independent branch. At least four rice GF14 genes, GF14b, GF14c, GF14e and Gf14f were differentially regulated in the interactions of rice-Magnaporthe grisea and rice-Xanthomonas oryzae pv. oryzae, and the incompatible interactions stronger induced the genes than the compatible interactions. These GF14 genes were also induced by the defense compounds, benzothiadiazole, methyl jasmonate, ethephon and hydrogen peroxide. Similarly, they were differentially regulated by salinity, drought, wounding and abscisic acid. Tissue-specific analysis and expression of GF14-YFP fusions revealed that the four GF14 isoforms were expressed with tissue specificity and accumulated differentially in the cytoplasm and nucleus. Our current study provides fundamental information for the further investigation of the rice GF14 proteins.
The Asian honeybee Apis cerana is one of two bee species that have been commercially kept with immense economic value. Here we present the analysis of genomic sequence and transcriptomic exploration for A. cerana as well as the comparative genomic analysis of the Asian honeybee and the European honeybee A. mellifera. The genome and RNA-seq data yield new insights into the behavioral and physiological resistance to the parasitic mite Varroa the evolution of antimicrobial peptides, and the genetic basis for labor division in A. cerana. Comparison of genes between the two sister species revealed genes specific to A. cerana, 54.5% of which have no homology to any known proteins. The observation that A. cerana displayed significantly more vigilant grooming behaviors to the presence of Varroa than A. mellifera in conjunction with gene expression analysis suggests that parasite-defensive grooming in A. cerana is likely triggered not only by exogenous stimuli through visual and olfactory detection of the parasite, but also by genetically endogenous processes that periodically activates a bout of grooming to remove the ectoparasite. This information provides a valuable platform to facilitate the traits unique to A. cerana as well as those shared with other social bees for health improvement.
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