The occurrence and levels of @entity70134 in the seeds and other parts of plants grown from the seeds of 180 randomly selected plant species were assessed and compared. @entity8827 are frequently detectable in leaves and flowers, but less so in stems, roots and seeds. The seeds of 290 species were assessed for the presence of hydrolysable @entity8827 conjugates. Low levels of conjugates were detected in a significant number of species, large amounts being present only when levels of free @entity8827 were high. Individual plants of @entity958 were assessed for the presence of @entity70134 . While plants of this species are generally ecdysteroid negative, individual plants in the population accumulate low levels of @entity8827 . Extracts of seeds of 50 "ecdysteroid-negative" species were concentrated and partially purified to determine if they possess @entity8827 at levels below the usual detection levels. @entity8827 were detectable by radioimmunoassay in almost all of these concentrated samples. Thus, all lines of evidence point to the conclusion that all species of plants have the capacity to produce at least low levels of @entity70134 . This has important implications for the protection of crop species through enhancing ecdysteroid levels by breeding/genetic modification strategies.

On the distribution of XXXX in plants.

@entity958 :: ('3702', 'Species') :: ['Arabidopsis thaliana'] @entity8827 :: ('MESH:D026461', 'Chemical') :: ['ecdysteroid', 'ecdysteroids', 'Ecdysteroids'] @entity70134 :: ('CHEBI:26118', 'Chemical') :: ['phytoecdysteroids']
@entity70134 :: (CHEBI:26118,Chemical) :: ['phytoecdysteroids']
