Characterization of the Geranylgeranyl Diphosphate Synthase Gene in Acyrthosiphon pisum (Hemiptera: Aphididae) and Its Association With Carotenoid Biosynthesis oleh Bi-Yue Ding, Bi-Yue Ding, Jinzhi Niu, Jinzhi Niu, Feng Shang, Feng Shang, Li Yang, Li Yang, Teng-Yu Chang, Teng-Yu Chang, Jin-Jun Wang, Jin-Jun Wang