replace a previous occupant of the same position
People fear that if foreign businesses are granted unlimited permission to set up in the country, they will before long supplant domestic businesses.
sub (under) planta (sole of the foot) (Latin)
Sounds like: sub + plant. i. e substitute + plant. so it is taking the place of the other plant or superseding it. Root out one plant and grow another. SUPer PLANT---Due to advances in agriculture, govt. is replacing all plants with SUPer PLANTs.