Assertion: carotenoid's role | /r/HasProperty | characterized at molecular level
Facets:
value: well
type: MANNER
Source sentences:
text: The role of the plant hormone ethylene and a number of recently described ripening transcription factors have been well characterized at the molecular level ( Giovannoni, 2004 ; Matas et al. , 2009 ; Klee and Giovannoni, 2011 ).