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Mehrian SK, Karimi N, Rahmani F. 24-Epibrassinolide alleviates diazinon oxidative damage by escalating activities of antioxidant defense systems in maize plants. Sci Rep 2023; 13:19631. [PMID: 37949961 PMCID: PMC10638446 DOI: 10.1038/s41598-023-46764-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 11/04/2023] [Indexed: 11/12/2023] Open
Abstract
Excessive use of pesticides against pests has contaminated agricultural crops and raised global concerns about food safety. This research investigates the alleviation effects of 24-epibrassinolide (EBL) seed priming on diazinon (DZ) pesticide toxicity. The experiment was conducted with eight groups including control, DZ, EBL (10 µM), EBL (0.1 µM), EBL (0.01 µM), EBL (10 µM) + DZ, EBL (0.1 µM) + DZ, and EBL (0.01 µM) + DZ. Plants grown with the lowest concentration of EBL (0.01 µM) exhibited an upward increase in the activity of SOD, CAT, POD, APX, GR, and GST enzymes under DZ toxicity stress. In contrast, higher concentrations of EBL showed some inhibitory effects on the activity of antioxidant enzymes. In addition, low concentrations of EBL elevated the free radical scavenging capacity (DPPH), iron-reducing antioxidant power (FRAP), photosynthesis rate (Pn), stomatal conductance (Gs) and proline, and protein contents. EBL also reduced lipid peroxidation (MDA levels) in the DZ-exposed plants, leading to membrane integrity. The favorable effects of EBL were more evident when plants were exposed to pesticides than normal growth conditions. The results indicated that EBL seed priming intensifies the antioxidant enzymes system activity, and helps maize plants against toxic effects of DZ under proper concentration.
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Affiliation(s)
- Saeed Karami Mehrian
- Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
- Department of Biology, Faculty of Science, Urmia University, Urmia, Iran
| | - Nasser Karimi
- Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran.
| | - Fatemeh Rahmani
- Department of Biology, Faculty of Science, Urmia University, Urmia, Iran.
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Kumar N, Sharma V, Kaur G, Lata C, Dasila H, Perveen K, Khan F, Gupta VK, Khanam MN. Brassinosteroids as promoters of seedling growth and antioxidant activity under heavy metal zinc stress in mung bean ( Vigna radiata L.). Front Microbiol 2023; 14:1259103. [PMID: 37869675 PMCID: PMC10586047 DOI: 10.3389/fmicb.2023.1259103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/12/2023] [Indexed: 10/24/2023] Open
Abstract
The escalation of harmful pollutants, including heavy metals, due to industrialization and urbanization has become a global concern. To mitigate the negative impacts of heavy metal stress on germination and early plant development, growth regulators have been employed. This study aimed to evaluate the response of mung bean (Vigna radiata L.) to zinc stress in the presence of brassinosteroids, focusing on seedling growth and antioxidant potential. Mung bean seedlings were treated with three concentrations of 24-epibrassinolide (EBL) (0.1, 0.2, and 0.4 PPM) with or without zinc. Results demonstrated that the application of brassinosteroids, combined with zinc stress, significantly enhanced germination percentage (about 47.06, 63.64, and 120%), speed of germination (about 39.13, 50, and 100%), seedling growth (about 38% in case of treatment combined 0.4 PPM 24-EBL and 1.5 mM ZnSO4) and seedling vigor index (204% in case of treatment combined 0.4 PPM 24-EBL and 1.5 mM ZnSO4) compared to zinc-treated seedlings alone after 24 h. The activities of antioxidative enzymes (catalase, ascorbate peroxidase, polyphenol oxidase, and peroxidase) and total soluble protein content decreased, while lipid peroxidation and proline content exhibited a significant increase (p ≤ 0.05) when compared to the control. However, the negative effects induced by heavy metal stress on these parameters were significantly mitigated by EBL application. Notably, the most effective concentration of EBL in overcoming zinc stress was found to be 0.4 PPM. These findings underscore the potential of exogenously applied brassinosteroids as a valuable tool in phytoremediation projects by ameliorating heavy metal stress.
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Affiliation(s)
- Naresh Kumar
- Department of Chemistry and Biochemistry, Eternal University, Rajgarh, India
- Department of Biochemistry, Kurukshetra University, Kurukshetra, India
| | - Vikas Sharma
- ICAR-National Dairy Research Institute, Karnal, India
| | - Gurpreet Kaur
- ICAR-Central Soil Salinity Research Institute, Karnal, India
| | - Charu Lata
- ICAR- Indian Institute of Wheat and Barley Research, RRS, Shimla, India
| | - Hemant Dasila
- Department of Microbiology, Eternal University, Rajgarh, India
| | - Kahkashan Perveen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Faheema Khan
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Vijay K. Gupta
- Department of Biochemistry, Kurukshetra University, Kurukshetra, India
| | - Mehrun Nisha Khanam
- School of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
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Ma C, Pei ZQ, Bai X, Feng JY, Zhang L, Fan JR, Wang J, Zhang TG, Zheng S. Involvement of NO and Ca 2+ in the enhancement of cold tolerance induced by melatonin in winter turnip rape (Brassica rapa L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 190:262-276. [PMID: 36152511 DOI: 10.1016/j.plaphy.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/08/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
As a multifunctional phytohormone, melatonin (Mel) plays pivotal roles in plant responses to multiple stresses. However, its mechanism of action remains elusive. In the present study, we evaluated the role of NO and Ca2+ signaling in Mel enhanced cold tolerance in winter turnip rape. The results showed that the NO content and concentration of intracellular free Ca2+ ([Ca2+]cyt) increased by 35.42% and 30.87%, respectively, in the leaves of rape seedlings exposed to cold stress. Compared with those of the seedlings in cold stress alone, the NO content and concentration of [Ca2+]cyt in rape seedlings pretreated with Mel increased further. In addition, the Mel-mediated improvement of cold tolerance was inhibited by L-NAME (a NO synthase inhibitor), tungstate (a nitrate reductase inhibitor), LaCl3 (a Ca2+ channel blocker), and EGTA (a Ca2+ chelator), and this finding was mainly reflected in the increase in ROS content and the decrease in osmoregulatory capacity, photosynthetic efficiency and antioxidant enzyme activities, and expression levels of antioxidant enzyme genes. These findings suggest that NO and Ca2+ are necessary for Mel to improve cold tolerance and function synergistically downstream of Mel. Notably, the co-treatment of Mel with L-NAME, tungstate, LaCl3, or EGTA also inhibited the Mel-induced expression of MAPK3/6 under cold stress. In conclusion, NO and Ca2+ are involved in the enhancement of cold tolerance induced by Mel through activating the MAPK cascades in rape seedlings, and a crosstalk may exist between NO and Ca2+ signaling.
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Affiliation(s)
- Cheng Ma
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Zi-Qi Pei
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Xue Bai
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Ju-Yan Feng
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Lu Zhang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Jie-Ru Fan
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Juan Wang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Teng-Guo Zhang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China.
| | - Sheng Zheng
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China.
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Starodubtseva A, Kalachova T, Iakovenko O, Stoudková V, Zhabinskii V, Khripach V, Ruelland E, Martinec J, Burketová L, Kravets V. BODIPY Conjugate of Epibrassinolide as a Novel Biologically Active Probe for In Vivo Imaging. Int J Mol Sci 2021; 22:3599. [PMID: 33808421 PMCID: PMC8036458 DOI: 10.3390/ijms22073599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 11/17/2022] Open
Abstract
Brassinosteroids (BRs) are plant hormones of steroid nature, regulating various developmental and adaptive processes. The perception, transport, and signaling of BRs are actively studied nowadays via a wide range of biochemical and genetic tools. However, most of the knowledge about BRs intracellular localization and turnover relies on the visualization of the receptors or cellular compartments using dyes or fluorescent protein fusions. We have previously synthesized a conjugate of epibrassinolide with green fluorescent dye BODIPY (eBL-BODIPY). Here we present a detailed assessment of the compound bioactivity and its suitability as probe for in vivo visualization of BRs. We show that eBL-BODIPY rapidly penetrates epidermal cells of Arabidopsis thaliana roots and after long exposure causes physiological and transcriptomic responses similar to the natural hormone.
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Affiliation(s)
- Anastasiia Starodubtseva
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague, Czech Republic; (A.S.); (O.I.); (V.S.); (J.M.); (L.B.)
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic
- Institute of Ecology and Environmental Sciences of Paris, Paris-Est University, UPEC, 94010 Créteil, France
| | - Tetiana Kalachova
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague, Czech Republic; (A.S.); (O.I.); (V.S.); (J.M.); (L.B.)
| | - Oksana Iakovenko
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague, Czech Republic; (A.S.); (O.I.); (V.S.); (J.M.); (L.B.)
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 02094 Kyiv, Ukraine;
| | - Vera Stoudková
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague, Czech Republic; (A.S.); (O.I.); (V.S.); (J.M.); (L.B.)
| | - Vladimir Zhabinskii
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich Str., 5/2, 220141 Minsk, Belarus; (V.Z.); (V.K.)
| | - Vladimir Khripach
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich Str., 5/2, 220141 Minsk, Belarus; (V.Z.); (V.K.)
| | - Eric Ruelland
- UMR 7025 CNRS, GEC Génie Enzymatique et Cellulaire, Centre de Recherches, Rue Personne de Roberval, CS 60319, Alliance Sorbonne Universités, Université de Technologie de Compiègne, 60203 Compiègne CEDEX, France;
| | - Jan Martinec
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague, Czech Republic; (A.S.); (O.I.); (V.S.); (J.M.); (L.B.)
| | - Lenka Burketová
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague, Czech Republic; (A.S.); (O.I.); (V.S.); (J.M.); (L.B.)
| | - Volodymyr Kravets
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 02094 Kyiv, Ukraine;
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