bookmark ATTED-II A coexpression database for plant species, which provides a parallel view of multiple coexpression data sets with network analysis tools. The user can effectively find functional gene relationships and design experiments to confirm the gene functions by reverse genetics and general molecular biological techniques. ATTED-II includes new and updated coexpression data and analysis tools. ATTED-II version 8.0 now includes eight microarray- and six RNAseq-based coexpression data sets for nine species (Arabidopsis, field mustard, soybean, barrel medick, poplar, tomato, grape, rice and maize). Importantly, five species (Arabidopsis, soybean, tomato, rice and maize) are now supported by both microarray- and RNAseq-based coexpression data.