Assertion: nodule's rhizobium | /r/HasAspect | mechanism
Facets:
value: for the biosynthesis of trehalose
type: PURPOSE
Source sentences:
text: As mentioned above, rhizobia have mechanisms that help to modulate the ethylene levels in plant roots; these include the bacterial enzyme ACC deaminase and the synthesis of the molecule rhizobitoxine.
text: With these two exceptions, it is suggested that rhizobia have two mechanisms for the biosynthesis of trehalose.