Interesting paper. Do you work in the area? I'm working on proving that memories are in fact stored in genetic material, as was believed back in the 60s.
Drop me an email (gauravvman at gmail) if you're interested in this kind of stuff! Would like to know how you came across this paper.
There was also a paper published last month claiming DNA synthesis following learning, but I'm sceptical:
https://www.ncbi.nlm.nih.gov/pubmed/29427086