The accumulation and distribution of arsenic species and selected metals in the saltmarsh halophyte, spiny rush (Juncus acutus)

This study examined the accumulation of As species, Se, Cu, Zn, Cd and Pb in the halophyte Juncus acutus, collected from three anthropogenically impacted estuaries in NSW, Australia. As concentration ranged from 4 to 22 μg/g at Georges River, 2–16 μg/g at Lake Macquarie and 6 μg/g at Hunter Estuary....

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Bibliographic Details
Published in:Marine pollution bulletin 2022-02, Vol.175, p.113373-113373, Article 113373
Main Authors: Alam, Md Rushna, Rahman, Mohammad Mahmudur, Tam, Nora Fung-Yee, Yu, Richard Man Kit, MacFarlane, Geoff R.
Format: Article
Language:English
Subjects:
Accumulation
Anthropogenic factors
Aquatic plants
Arsenic
Arsenic - analysis
Bioindicator
Bioindicators
Cadmium
Copper
Environmental Monitoring
Estuaries
Estuarine dynamics
Geographical distribution
Halophytes
Heavy metals
Indicator organisms
Indicator species
Juncus acutus
Lakes
Lead
Metals
Metals and metalloids
Metals, Heavy - analysis
Phytoextraction
Plant tissues
Plasma membranes
Roots
Salt tolerance
Salt-Tolerant Plants
Sediment load
Selenium
Shoots
Translocation
Zinc
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Summary:This study examined the accumulation of As species, Se, Cu, Zn, Cd and Pb in the halophyte Juncus acutus, collected from three anthropogenically impacted estuaries in NSW, Australia. As concentration ranged from 4 to 22 μg/g at Georges River, 2–16 μg/g at Lake Macquarie and 6 μg/g at Hunter Estuary. Inorganic As was accumulated mainly in roots with low translocation to culm with a greater abundance of AsV. However, AsIII (TF = 0.32) showed greater mobility from the roots to shoots than AsV (TF = 0.04), indicating a higher quantity of AsIII specific transporter assemblages in the plasmalemma of the endodermis or cytoplasmic reduction of AsV to AsIII in culms. Metal(loid)s, including As (90%), were predominantly in root tissues and very limited translocation to culm, indicating the species is a useful phytostabiliser. As and all other metal(loid)s in roots were correlated with sediment loads (p 
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2022.113373