NDLI: Phytotoxicity and Accumulation of Lead in Australian Native Vegetation

Content Provider	Springer Nature Link
Author	Lamb, Dane T. Ming, Hui Megharaj, Mallavarapu Naidu, Ravi
Copyright Year	2010
Abstract	Lead (Pb) is a wide spread contaminant in the terrestrial landscape. It is highly detrimental to plant and animal life and possesses no known biologic function. Yet there is a paucity of reliable information available on the response of Australian and other plant species to Pb exposure at phytotoxic doses. In this study, the response of three Australian native grass species and two tree species to Pb in nutrient solution culture was investigated. Plants were exposed to average Pb concentrations ranging from 0.020 to 15.2 μM. The plant species included Acacia decurrens, Austrodanthonia richardsonii, Bothriochloa macra, Eucalyptus camaldulensis, and Dichanthium sericeum. Few foliar symptoms were evident in any plant species, although some discolouration in young leaves of E. camaldulensis was evident from 1 μM, and B. macra showed pronounced reddening at the highest treatments. The most tolerant plant species studied based on solution EC50, roots (μM) results was B. macra (7.0 ± 0.2), followed by A. decurrens (3.9 ± 0.2), D. sericeum (2.9 ± 0.3), E. camaldulensis (1.1 ± 0.3), and A. richardsonii (0.4). A hazardous concentration value (HC5) (n = 9) for soil solution was estimated to be 0.16 μM. A. richardsonii was highly sensitive to Pb and possessed little ability to restrict Pb translocation to its shoots. B. macra was able to tolerate high root (3924 mg kg−1) and shoot (743.0 mg kg−1) Pb concentrations. A. decurrens excluded Pb from it shoots. The high tolerance of A. decurrens to Pb and limited translocation to shoots indicates it may be useful in revegetation of Pb-contaminated soils.
Starting Page	613
Ending Page	621
Page Count	9
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	58
Issue Number	3
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-30
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental Monitoring/Analysis Soil Science & Conservation Environmental Chemistry Environmental Health Pollution Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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