Why is only Pubmed implemented as a database?

[Guelakais]

You can access more than just one database via the NCBI. In my opinion, the following query cannot be mapped with this library:

#!/bin/sh
esearch -db nuccore -query "Sclerotinia sclerotiorum 1980 [TITLE]"  | efilter -molecule mrna | efetch -format fasta > s_sclerot.fa