Hello,
Yes, both Tophat and Cufflinks are deprecated in favor of more current tools/methods for RNA-seq analysis.
The TAIR10 genome is indexed for HISAT2 at Galaxy EU https://usegalaxy.eu.
We are working to standardize the genomes and indexes between all usegalaxy.* servers but this is still a work in progress. If you want to work with Arabidopsis at Galaxy Main https://usegalaxy.org right now, you’ll need to use it as a Custom Reference Genome
with many tools.
Start with the first if you choose to use a Custom Genome. The second explains how to make sure any reference annotation that you incorporate is a match for the genome and indexes used in the same analysis (Custom or Built-in):