Assertion: ethylene | /r/HasProperty | crucial
Facets:
value: for viability
type: PURPOSE
Source sentences:
text: The comparison of null mutations in key ethylene signaling components and the octuple ACS (acs8x) ethylene biosynthesis mutant revealed that not ethylene but ACC is crucial for viability, since only the latter resulted in embryo lethality (Tsuchisaka et al., 2009).