This can, in principle, occur to all species that interact with the transgenic plants, either directly or indirectly: microbes in the soil and other parts of the plants as well as in other organisms, worms, insects, arthropods, birds, small mammals and human beings.
(This; can occur directly; to all species) (all species; interact; with the transgenic plants)
This all species
can occur directly interact
to all species
with the transgenic plants