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Phytotoxicity of zinc, chromium (VI) and cadmium in purging nut (Jatropha curcas) seedlings grown in hydroponics

Indian Agricultural Research Journals

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Title Phytotoxicity of zinc, chromium (VI) and cadmium in purging nut (Jatropha curcas) seedlings grown in hydroponics
 
Creator Acharya, Somen
Sharma, D K
Joshi, H C
 
Subject Heavy metals
Hydroponics
Jatropha curcas
Oxidative stress
Phytotoxicity
 
Description This study investigated physiological, morphological, biochemical and metal uptake patterns in purging nut (Jatropha curcas L.) seedlings exposed to zinc (Zn), chromium (Cr) and cadmium (Cd) in a hydroponic system. Uptake of metals in all parts of the seedlings was found to be highest for Zn, followed by Cd and Cr. Catalase (CAT) and superoxide dismutase (SOD) activities were increased on exposure to heavy metals, but 5 mM Cd and Cr significantly inhibited SOD activity compared to Zn. This may reflect damage to the plant due to lipid per-oxidation as shown by a decrease in the % membrane stability index at higher metal concentrations. With increase in concentration of all the heavy metals tested, there was a significant decrease in chlorophyll content, however there was a stimulatory effect at low Zn concentrations (up to 0.5 mM). Root length and surface area were both significantly decreased with increasing metal concentration.
 
Publisher Indian Council of Agricultural Research
 
Date 2012-08-14
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJAgS/article/view/23046
10.56093/ijas.v82i8.23046
 
Source The Indian Journal of Agricultural Sciences; Vol. 82 No. 8 (2012); 667–71
2394-3319
0019-5022
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAgS/article/view/23046/11180
 
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