Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
4243234
Reference Type
Journal Article
Title
Arsenic toxicity in plants: Cellular and molecular mechanisms of its transport and metabolism
Author(s)
Farooq, MA; Islam, F; Ali, B; Najeeb, U; Mao, B; Gill, RA; Yan, G; Siddique, KHM; Zhou, W
Year
2016
Is Peer Reviewed?
Yes
Journal
Environmental and Experimental Botany
ISSN:
0098-8472
EISSN:
1873-7307
Volume
132
Page Numbers
42-52
DOI
10.1016/j.envexpbot.2016.08.004
Web of Science Id
WOS:000386414700004
Abstract
Arsenic (As), a naturally-occurring metalloid, is not essential for plant growth, but it can accumulate in plants to toxic levels. As a result, it can enter the food chain and pose health risk to humans. Multiple mechanisms are involved in the uptake and metabolism of As in plants. The most toxic forms of this element are As-III and As-v. Methylated As and arsenite (as As-III) move through the noduline 26-like intrinsic protein (NIP) aquaporin channels while arsenate (as As-v) is taken up through the phosphate transporters. In the Pteridaceae family, some fern species show hyper-accumulating behavior towards As in aboveground tissues. However, generally in plants, the chelation phenomenon detoxifies arsenite through complexation with the thiol-rich peptide. This comprehensive review encompasses the mechanisms of transport, metabolism, and tolerance that plants show in response to As. Some recent advancement in plant breeding, genetic modifications and remediation approaches to overcome soil and food contamination problems are also summarized. We will also evaluate the implications of these new findings and assess how this may help in developing the crops that can be grown in high As regions and ultimately will be safe for consumers. (C) 2016 Elsevier B.V. All rights reserved.
Keywords
Arsenic; Bioavailability; Speciation; Transport; Metabolism; Toxicity; Mitigation
Tags
IRIS
•
Arsenic Hazard ID
Lit Search Updates Oct 2015 to Jan 2019
WOS
2.5 Update 2015-2019: Title & Abstract Screening
Not relevant to PECO
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity