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Pak. J. Bot., 48(3): 971-976, 2016. |
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Updated: 16-06-16 | ||||
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MECHANISM OF FLURIDONE-INDUCED SEED GERMINATION OF CISTANCHE TUBULOSA
QING LIANG CHEN1, YUHAI GUO2, YONG JIANG1 AND PENGFEI TU1*
Abstract: Our previous study disclosed that fluridone, a synthesis inhibitor of abscisic acid (ABA), could stimulate seed germination in the holoparasitic plant Cistanche tubulosa. Nonetheless, the underlying mechanisms have not been thoroughly elucidated. In the present study, an attempt was made to reveal the mechanism of fluridone breaking seed dormancy in C. tubulosa and to determine the contribution of hormones in this process. The ABA level in seeds initially decreased following fluridone treatment and was subsequently maintained at a concentration of 31 ng·g-1 DW (dry weight) three days later. The contents of gibberellins (GAs) initially increased and subsequently were maintained at a level of 40
1Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, No. 38 Xueyuan Road, Beijing 100191, China 2Chinese Medicinal Herbs Research Center, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100093, China *Corresponding author’s e-mail: pengfeitu@bjmu.edu.cn |
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