The effect of arsenic on pigment composition and photosynthesis in Hydrilla verticillata
Authors:
- 1 June 2013
- journal article
- Published by Institute of Experimental Botany in Biologia plantarum
- Vol. 57 (2) , 385-389
Abstract
The present study evaluated the effects of 100 and 500 μM arsenate (Na2HAsO4) on pigment composition and photosynthesis in Hydrilla verticillata (L.f.) Royle. Arsenic accumulation increased in concentration and duration dependent manner. The maximum accumulation [568 μg(As) g−1(d.m.)] was observed at 500 μM concentration and 96-h exposure. This concentration led to a significant decline in chlorophyll a content and PS II efficiency during the whole experiment, and in chlorophyll b and carotenoids after 96 h, but no significant changes in photosynthetic pigments were noticed at 100 μM arsenate. Net photosynthetic rate, electron transport rate, and water use efficiency declined whereas transpiration rate increased, and stomatal conductance and photochemical quenching did not show any effect or increased. The content of reactive oxygen species increased and content of reduced ascorbate declined at 500 μM arsenate in comparison to the control.Keywords
This publication has 21 references indexed in Scilit:
- Arsenic Toxicity: The Effects on Plant MetabolismFrontiers in Physiology, 2012
- Redox state and energetic equilibrium determine the magnitude of stress in Hydrilla verticillata upon exposure to arsenateProtoplasma, 2010
- Biological responses of duckweed (Lemna minor L.) exposed to the inorganic arsenic species As(III) and As(V): effects of concentration and duration of exposureEcotoxicology, 2010
- Silicon‐induced cadmium resistance in rice (Oryza sativa)Journal of Plant Nutrition and Soil Science, 2008
- Light regulation of ascorbate biosynthesis is dependent on the photosynthetic electron transport chain but independent of sugars in ArabidopsisJournal of Experimental Botany, 2007
- Measurement of reduced, oxidized and total ascorbate content in plantsNature Protocols, 2007
- Effects of arsenic on phosphorus content in different organs and chlorophyll fluorescence in primary leaves of soybeanBiologia plantarum, 2006
- Effect of arsenic on some physiological parameters in bean plantsBiologia plantarum, 2005
- Chlorophylls and Carotenoids: Measurement and Characterization by UV‐VIS SpectroscopyCurrent Protocols in Food Analytical Chemistry, 2001
- Role of superoxide, lipid peroxidation and superoxide dismutase in membrane perturbation during loss of viability in seeds of Shorea robusta Gaertn.f.New Phytologist, 1994