Physiological Stress of High NH (4) (+) Concentration in Water Column on the Submersed Macrophyte Vallisneria Natans L.


Autoria(s): Cao, Te; Xie, Ping; Li, Zhongqiang; Ni, Leyi; Zhang, Meng; Xu, Jun
Data(s)

01/03/2009

Resumo

The submersed macrophyte, Vallisneria natans L., was cultured in laboratory with NH (4) (+) -enriched tap water (1 mg L-1 NH4-N) for 2 months and the stressful effects of high ammonium (NH (4) (+) ) concentrations in the water column on this species was evaluated. The plant growth was severely inhibited by the NH (4) (+) supplement in the water column. The plant carbon and nitrogen metabolisms were disturbed by the NH (4) (+) supplement as indicated by the accumulation of free amino acids and the depletion of soluble carbohydrates in the plant tissues. The results suggested that high NH (4) (+) concentrations in the water column may hamper the restoration of submersed vegetation in eutrophic lakes.

The submersed macrophyte, Vallisneria natans L., was cultured in laboratory with NH (4) (+) -enriched tap water (1 mg L-1 NH4-N) for 2 months and the stressful effects of high ammonium (NH (4) (+) ) concentrations in the water column on this species was evaluated. The plant growth was severely inhibited by the NH (4) (+) supplement in the water column. The plant carbon and nitrogen metabolisms were disturbed by the NH (4) (+) supplement as indicated by the accumulation of free amino acids and the depletion of soluble carbohydrates in the plant tissues. The results suggested that high NH (4) (+) concentrations in the water column may hamper the restoration of submersed vegetation in eutrophic lakes.

Improving Water Quality of Drinking Water Source in Meiliang Bay, Lake Taihu [2002AA601011]; NSFC [30570280]

Identificador

http://ir.ihb.ac.cn/handle/152342/7914

http://www.irgrid.ac.cn/handle/1471x/58470

Idioma(s)

英语

Fonte

Cao, Te; Xie, Ping; Li, Zhongqiang; Ni, Leyi; Zhang, Meng; Xu, Jun.Physiological Stress of High NH (4) (+) Concentration in Water Column on the Submersed Macrophyte Vallisneria Natans L.,BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY,2009,82(3):296-299

Palavras-Chave #Environmental Sciences; Toxicology #NH4+ stress #Vallisneria natans #Eutrophication #Macrophyte restoration
Tipo

期刊论文