We know that arsenate (H2AsO4 and HAsO4) can compete with phosphate, and arsenite As(OH)3 can be taken up similar to soluble silica (Si(OH)4). However, can silicate (normally Si(OH)4 at pH 3-9) reduce Arsenate uptake by plants?
Yes, the spectrum can control some conditions such as irrigation and fertilization were applied by R. Y. Li†‡, J. L. Stroud†, J. F. Ma§, S. P. McGrath† and F. J. Zhao† in 2009,
they applied it on the rice crop, and thy found that Water management and silicon fertilization are effective measures to reduce arsenic accumulation in rice crop.
Reference :
R. Y. Li†‡ at all ,2009 Environmental Science & Technology
Vol. 43: Issue. 10: Pages. 3778-3783
Publication Date (Web): April 14, 2009
link:
http://pubs.acs.org/doi/abs/10.1021/es803643v
http://pubs.acs.org/doi/abs/10.1021/es803643v
Dear Nguyen,
We have recently published a paper and here we have shown, application of Si decreases As content in lettuce plant. We have tested this in the hydroponic condition.Here you can see that paper
https://www.researchgate.net/publication/282856527_Influence_of_silicon_on_arsenic_uptake_and_toxicity_in_lettuce
Article Influence of silicon on arsenic uptake and toxicity in lettuce
Definitely Si does have the role to reduce As accumulation in plants. However, it depends on the level of the As stress and treatment used. In general, Si enhances phytochelation accumulation leading to vacuolar sequestration of roots. In my experiences, Si used at 1mM or 1.5mM showed detoxification of As in rice plants.
- Badges
- Science topic
- Similar topics
- Biological Science
- Botany
- Plant Biology