[1] Besides those, over 250 ecdysteroid analogs have been identified so far in plants, and it has been theorized that there are over 1,000 possible structures which might occur in nature.
[2] Many more plants have the ability to "turn on" the production of phytoecdysteroids when under stress, animal attack or other conditions.
[4] Some plants and fungi that produce phytoecdysteroids include Achyranthes bidentata,[5] Tinospora cordifolia,[6] Pfaffia paniculata,[7] Leuzea carthamoides,[8] Rhaponticum uniflorum,[9] Serratula coronata,[10] Cordyceps,[citation needed] and Asparagus.
Indeed, phytoecdysteroids sprayed onto plants have been shown to reduce the infestation of nematodes and insects.
The plant producing phytoecdysteroids may also be affected by ecdysteroids, mainly by increasing the rate of photosynthesis.