Logo image
Back
Exogenous abscisic acid promotes the nitrogen use efficiency of Brassica napus by increasing nitrogen remobilization in the leaves
Journal article   Peer reviewed

Exogenous abscisic acid promotes the nitrogen use efficiency of Brassica napus by increasing nitrogen remobilization in the leaves

Yong-Liang Han, Jia-Yuan Liao, Yin Yu, Hai-Xing Song, Nan Rong, Chun-Yun Guan, Joe Eugene Lepo, Abdelbagi M. Ismail and Zhen-Hua Zhang
Journal of plant nutrition, Vol.40(18), pp.2540-2549
11/08/2017
DOI: https://doi.org/10.1080/01904167.2017.1380821
Web of Science ID: WOS:000415823200004

Metrics

11 Record Views
18 Times Cited - Web of Science

Abstract

The effect of exogenous abscisic acid (ABA) on the nitrogen use efficiency (NUE) of Brassica napus was studied by pot experiments using ABA (1 mg L−1) daubed on the leaves at the early siliquing stage. The results showed that activities of proteases and glutamine synthetase (GS) were significantly promoted by the ABA treatment, which increased the capacity of degradation of foliar proteins and biosynthesis of glutamine (N-transport compounds), both of which promote decreased N in leaves of the ABA treatment. L-glutamine, other free amino acids, and soluble sugar content in the phloem sap of the ABA treatment were significantly higher than those of the control. A 15N label trial showed that more 15N was distributed from leaves to the grain by the ABA treatment, which resulted in a significantly higher NUE in the ABA treatment relative to the control.

Details

Logo image