Gama-aminobutyric acid accumulation in Elsholtzia splendens in response to copper toxicity
- Author:
Xiao-E YANG
1
;
Hong-Yun PENG
;
Sheng-Ke TIAN
Author Information
1. 浙江大学
- Keywords:
Accumulation;
Copper toxicity;
Elsholtzia splendens;
Gama-aminobutyric acid (GABA)
- From:
Journal of Zhejiang University. Science. B
2005;6B(2):96-99
- CountryChina
- Language:Chinese
-
Abstract:
A solution with different Cu supply levels was cultured to investigate gama-aminobutyric acid (GABA) accumulation in Elsholtzia splendens, a native Chinese Cu-tolerant and accumulating plant species. Increasing Cu from 0.25 to 500 ?mol/L significantly enhanced levels of GABA and histidine (His), but considerably decreased levels of aspartate (Asp) and glutamate (Glu) in the leaves. The leaf Asp level negatively correlated with leaf Cu level, while leaf GABA level positively correlated with leaf Cu level. The leaf Glu level negatively correlated with leaf GABA level in Elsholtzia splendens. The depletion of leaf Glu may be related to the enhanced synthesis ofleafGABA under Cu stress.
