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Open AccessArticle

The Recovery of Soybean Plants after Short-Term Cadmium Stress

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Department of Zoology and Anthropology, Faculty of Natural Sciences, Constantine the Philosopher University, ul. Nábrežie mládeže 91, 949-74 Nitra, Slovakia
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Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland
3
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 1419890 Dubna, Moscow Region, Russian
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Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str. MG-6, 077125 Bucharest–Magurele, Romania
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Department of Biochemistry, Faculty of Science, The University of Bamenda, ENS Street, Bambili, Cameroon
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Department of Biotechnology, University of Verona, Via San Francesco, 22, 37129 Verona VR, Italy
*
Author to whom correspondence should be addressed.
Plants 2020, 9(6), 782; https://doi.org/10.3390/plants9060782
Received: 28 May 2020 / Revised: 18 June 2020 / Accepted: 19 June 2020 / Published: 22 June 2020
(This article belongs to the Collection Feature Papers in Plant Physiology and Metabolism)
Background: Cadmium is a non-essential heavy metal, which is toxic even in relatively low concentrations. Although the mechanisms of Cd toxicity are well documented, there is limited information concerning the recovery of plants after exposure to this metal. Methods: The present study describes the recovery of soybean plants treated for 48 h with Cd at two concentrations: 10 and 25 mg/L. In the frame of the study the growth, cell viability, level of membrane damage makers, mineral content, photosynthesis parameters, and global methylation level have been assessed directly after Cd treatment and/or after 7 days of growth in optimal conditions. Results: The results show that exposure to Cd leads to the development of toxicity symptoms such as growth inhibition, increased cell mortality, and membrane damage. After a recovery period of 7 days, the exposed plants showed no differences in relation to the control in all analyzed parameters, with an exception of a slight reduction in root length and changed content of potassium, magnesium, and manganese. Conclusions: The results indicate that soybean plants are able to efficiently recover even after relatively severe Cd stress. On the other hand, previous exposure to Cd stress modulated their mineral uptake. View Full-Text
Keywords: metal stress; cadmium; cell viability; DNA methylation; lipid peroxidation; magnesium; manganese; potassium; recovery metal stress; cadmium; cell viability; DNA methylation; lipid peroxidation; magnesium; manganese; potassium; recovery
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Holubek, R.; Deckert, J.; Zinicovscaia, I.; Yushin, N.; Vergel, K.; Frontasyeva, M.; Sirotkin, A.V.; Bajia, D.S.; Chmielowska-Bąk, J. The Recovery of Soybean Plants after Short-Term Cadmium Stress. Plants 2020, 9, 782.

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