Journal
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
Volume 16, Issue 6, Pages 7575-7583Publisher
CORVINUS UNIV BUDAPEST
DOI: 10.15666/aeer/1606_75757583
Keywords
cadmium stress; spinach; glycinebetaine; anti-oxidant enzymes; chlorophyll
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Funding
- National Key Research and Development Project of China [2016YFD0300208]
- National Natural Science Foundation of China [41661070]
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A pot experiment was conducted to determine the effect of foliar applied glycinebetaine (GB) against cadmium (Cd) stress tolerance in spinach. The study consisted of three concentrations of Cd i.e., 0, 25 and 50 mg kg(-1) and foliar application of GB glycinebetaine i.e., 0 and 25 mM. The results indicated that Cd stress considerably reduced the root growth, shoot growth, fresh biomass, dry biomass, chlorophyll a and b contents. Moreover, the foliar application of GB under Cd stress considerably increased the root and shoot growth, fresh and dry biomass production, chlorophyll a and b contents and activity of anti-oxidant enzymes i.e., malondialdehyde (MDA) and ascorbate per oxidase (APX) and reduced the accumulation of Cd in the roots and leaves of spinach. In conclusion, foliar application of GB alleviates the Cd toxicity in spinach through reduction in Cd uptake and improvement in anti-oxidant defensive system under Cd stress.
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