NDLI: Bioaccumulation of Copper by Zea mays: Impact on Root, Shoot and Leaf Growth

Content Provider	Springer Nature Link
Author	Benimeli, Claudia S. Medina, Analía Navarro, Carolina M. Medina, Roxana B. Amoroso, María J. Gómez, María I.
Copyright Year	2009
Abstract	In the present study, the growth and the Cu$^{2+}$accumulation by roots, shoots and leaves of Zea mays were examined using copper sulphate in the range of 10$^{−4}$ to 10$^{−2}$ M. Plants of Z. mays did not show inhibition of growth in the presence of 10$^{−4}$ to 10$^{−2}$ M Cu$^{2+}$; however, it was observed growth effects on root when different Cu$^{2+}$ solution concentrations were used. Only the seedlings exposed to 10$^{−2}$ M exhibited substantial root growth reduction, yielding only 56% of length with respect to the control. Seedlings exposed to 10$^{−4}$ M Cu$^{2+}$ exhibited 16% and 42% growth increase in shoots and leaves, respectively, when compared with the controls. The seedlings treated with 10$^{−3}$ and 10$^{−2}$ M Cu$^{2+}$ were inhibited in shoot and leaf growth. The fresh weights in roots, shoots and leaves significantly decreased at 10$^{−2}$ M Cu$^{2+}$. The tolerance index, based on root length, was not significantly different for the three different treatments with copper. However, the total accumulation rate was very low at 10$^{−4}$ and 10$^{−3}$ M compared to 10$^{−2}$ Cu treatments. The capacity of copper accumulation by roots, shoots and leaves of Z. mays plants increased concomitant to the copper concentration, arriving to 382 times more in roots, 157 in shoots and only 16 in leaves, all compared to the controls. Cu could be accumulated by roots, shoots and leaves when the initial concentrations were 10$^{−3}$ and 10$^{−4}$ M. However, when it was 10$^{−2}$ M, the metal could not be accumulated by leaf and shoot levels; the roots could increase their copper accumulation capacity three times compared to the control. Z. mays has potential ability to accumulate Cu without being overly sensitive to Cu toxicity.
Starting Page	365
Ending Page	370
Page Count	6
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	210
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-11-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Copper Zea mays Growth Uptake Climate Change Hydrogeology Soil Science & Conservation Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Environment
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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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
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