| Issue |
E3S Web Conf.
Volume 293, 2021
2021 3rd Global Conference on Ecological Environment and Civil Engineering (GCEECE 2021)
|
|
|---|---|---|
| Article Number | 03023 | |
| Number of page(s) | 5 | |
| Section | Sustainable Resource Development and Green Energy Saving | |
| DOI | https://doi.org/10.1051/e3sconf/202129303023 | |
| Published online | 23 July 2021 | |
Exogenous abscisic acid alleviates the toxicity of nickel in wheat seedlings
1 School of Geography and Environmental Engineering, Lanzhou City University, Lanzhou 730070, China
2 School of Biological and Environmental Engineering, Xi’an University, Xi’an 710065, China
3 Engineering Center for Pollution Control and Ecological Restoration in Mining of Gansu Province, Lanzhou, 730070, China
* Corresponding author: zkgtp@163.com (T.G.) ORCID: 0000-0001-6821-3836
In order to evaluate the effects of exogenous abscisic acid (ABA) in alleviating nickel (Ni) stress in wheat plants. We studied the changes of biochemical and physiological in wheat seedlings exposed to 250 μM Ni with or without different treatments of ABA. Exposed to Ni (250 μM) caused adverse effect on growth of wheat seedlings, which was accompanied by increased the concentrations of superoxide anion（O2−） and malondialdehyde (MDA). However, exogenous application of ABA (2.5 and 5 μM) alleviated the Ni-induced inhibition of plant growth, decreased the concentrations of O2− and MDA in wheat shoots. Further, application of ABA significantly modulated the activities of antioxidant enzymes and enhanced content of proline and soluble sugar in Ni-stressed wheats, but the application of 20 μM of ABA had no different significantly response for these parameters. The results indicated that application of ABA enhanced the antioxidant defense activities in Ni-stressed wheats, thus alleviating Ni-induced oxidative injury and enhancing Ni tolerance.
© The Authors, published by EDP Sciences, 2021
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