Mitigation effect of alpha-tocopherol and thermo-priming in Brassica napus L. under induced mercuric chloride stress.

Autor: Amin F; Department of Botany, University of Peshawar, Peshawar, 25120, Pakistan., Al-Huqail AA; Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia., Ullah S; Department of Botany, University of Peshawar, Peshawar, 25120, Pakistan. samibotany@uop.edu.pk., Khan MN; Department of Botany, Islamia College, Peshawar, 25120, Pakistan.; Biology Laboratory, University Public School, University of Peshawar, Peshawar, 25120, Pakistan., Kaplan A; Department of Crop and Animal Production, Sason Vocational School, Batman University, Batman, 72060, Turkey., Ali B; Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan. baberali@bs.qau.edu.pk., Iqbal M; Institute of Geographic Sciences and Natural Resources Research, University of Chinese Academy of Sciences, Beijing, 100040, China., Elsaid FG; Biology Department, College of Science, King Khalid University, 61421, Abha, Al-Faraa, Asir, Saudi Arabia., Ercisli S; Department of Horticulture, Agricultural Faculty, Ataturk University, Erzurum, 25240, Turkey., Malik T; Department of Biomedical Sciences, Institute of Health, Jimma University, 378, Jimma, Ethiopia. tabarak.malik@ju.edu.et., Al-Robai SA; Department of Biology, Faculty of Science, Al-Baha University, 1988, Al-Baha, Saudi Arabia., Abeed AHA; Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut, 71516, Egypt.
Jazyk: angličtina
Zdroj: BMC plant biology [BMC Plant Biol] 2024 Feb 13; Vol. 24 (1), pp. 108. Date of Electronic Publication: 2024 Feb 13.
DOI: 10.1186/s12870-024-04767-5
Abstrakt: Soil pollution with heavy metals has grown to be a big hassle, leading to the loss in farming production particularly in developing countries like Pakistan, where no proper channel is present for irrigation and extraction of these toxic heavy metals. The present study aims to ameliorate the damages caused by heavy metal ions (Hg-Mercury) on rapeseed (Brassica napus L.) via a growth regulator (α-tocopherol 150 mg/L) and thermopriming technique at 4 °C and 50 °C to maintain plant agronomical and physiological characteristics. In pot experiments, we designed total of 11 treatments viz.( T0 (control), T1 (Hg4ppm), T2 (Hg8ppm), T3 (Hg4ppm + 4 °C), T4 (Hg4ppm + 4 °C + tocopherol (150 m/L)), T5 (Hg4ppm + 50 °C), T6 (Hg4ppm + 50 °C + tocopherol (150 mg/L)), T7 (Hg8ppm + 4 °C), T8 (Hg8ppm + 4 °C + tocopherol (150 mg/L)), T9 (Hg8ppm + 50 °C), T10 (Hg8ppm + 50 °C + tocopherol (150 mg/L) the results revealed that chlorophyll content at p < 0.05 with growth regulator and antioxidant enzymes such as catalase, peroxidase, and malondialdehyde enhanced up to the maximum level at T5 = Hg4ppm + 50 °C (50 °C thermopriming under 4 ppm mercuric chloride stress), suggesting that high temperature initiate the antioxidant system to reduce photosystem damage. However, protein, proline, superoxide dismutase at p < 0.05, and carotenoid, soluble sugar, and ascorbate peroxidase were increased non-significantly (p > 0.05) 50 °C thermopriming under 8 ppm high mercuric chloride stress (T9 = Hg8ppm + 50 °C) representing the tolerance of selected specie by synthesizing osmolytes to resist oxidation mechanism. Furthermore, reduction in % MC (moisture content) is easily improved with foliar application of α-tocopherol and 50 °C thermopriming and 4 ppm heavy metal stress at T6 = Hg4ppm + 50 °C + α-tocopherol (150 mg/L), with a remarkable increase in plant vigor and germination energy. It has resulted that the inhibitory effect of only lower concentration (4 ppm) of heavy metal stress was ameliorated by exogenous application of α-tocopherol and thermopriming technique by synthesizing high levels of proline and antioxidant activities in maintaining seedling growth and development on heavy metal contaminated soil.
(© 2024. The Author(s).)
Databáze: MEDLINE
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