further combining de novo isotigs

Question

[pezhmansafdari]

Hi,

I have some RNAseq data which has been de novo assembled by trinity in BGI. The organism is supposed to have 6000 to 7000 genes but I have 120000 isotigs after the assembly. I am wondering if there is a way or a software which can further assemble these isotigs.

PS, the genome is not available.

Thanks a lot and kind regards,

Pezhman