Ascr#18 is an ascaroside hormone that is expressed throughout nematode development. It exhibits the ability to enhance resistance against a range of infections, including viral, bacterial, oomycete, fungal, and nematode, in Arabidopsis, tomato, potato, and barley[1].
Brevicompanine B is a fungal metabolite that has plant growth and circadian rhythm regulatory activity. Brevicompanine B inhibits primary root growth in Arabidopsis seedlings and disrupts the transcription of various genes involved in the regulation of plant circadian rhythm. It is active against P. falciparum.