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Effect of gibberellic acid on growth, photosynthesis and antioxidant defense system of wheat under zinc oxide nanoparticle stress.
Environ Pollut. 2019 Nov; 254(Pt B):113109.EP

Abstract

The production and soil accumulation of nanoparticles (NPs) from the industrial sector has increased concerns about their toxic effects in plants which needs the research to explore the ways of reducing NPs toxicity in pants. The gibberellic acid (GA) has been found to reduce abiotic stresses in plants. However, the effect of GA in reducing zinc oxide (ZnO) NPs-mediated toxicity in plants remains unclear. In this study, foliar application of GA was used to explore the possible role in reducing ZnO NPs toxicity in wheat (Triticum aestivum L.) plants. The plants were grown in pots spiked with ZnO NPs (0, 300, 600, 900, 1200 mg/kg) and GA (0, 100, 200 mg/L) was foliar sprayed at different times during the growth period under ambient environmental conditions. Our results demonstrated that GA inhibited the toxicity of ZnO NPs in wheat especially at higher levels of NPs. The GA application improved the plant biomass, photosynthesis, nutrients, and yield under ZnO NPs stress. The GA reduced the Zn accumulation, and reactive oxygen species generation in plants caused by toxicity of NPs. The protective effect of GA in decreasing ZnO NPs-induced oxidative stress was related to GA-mediated enhancement in antioxidant enzymes in plants. The role of GA in enhancing tolerance of wheat against ZnO NPs was further confirmed by the enhancement in nutrient contents in shoots and roots of wheat. Overall, our study provides the evidence that GA can reduce ZnO NPs-induced toxicity in wheat and probably in other crops which needs further in-depth investigation.

Authors+Show Affiliations

Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan.Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan.Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan.Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan.Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan.Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan. Electronic address: mrizwan@gcuf.edu.pk.Biology Department, College of Science, Jouf University, Sakaka, 2014, Saudi Arabia.Biological Sciences Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia.Biology Department, Faculty of Science, Taibah University, Al-Sharm, Yanbu El-Bahr, Yanbu 46429, Saudi Arabia; Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31487671

Citation

Iftikhar, Azka, et al. "Effect of Gibberellic Acid On Growth, Photosynthesis and Antioxidant Defense System of Wheat Under Zinc Oxide Nanoparticle Stress." Environmental Pollution (Barking, Essex : 1987), vol. 254, no. Pt B, 2019, p. 113109.
Iftikhar A, Ali S, Yasmeen T, et al. Effect of gibberellic acid on growth, photosynthesis and antioxidant defense system of wheat under zinc oxide nanoparticle stress. Environ Pollut. 2019;254(Pt B):113109.
Iftikhar, A., Ali, S., Yasmeen, T., Arif, M. S., Zubair, M., Rizwan, M., Alhaithloul, H. A. S., Alayafi, A. A. M., & Soliman, M. H. (2019). Effect of gibberellic acid on growth, photosynthesis and antioxidant defense system of wheat under zinc oxide nanoparticle stress. Environmental Pollution (Barking, Essex : 1987), 254(Pt B), 113109. https://doi.org/10.1016/j.envpol.2019.113109
Iftikhar A, et al. Effect of Gibberellic Acid On Growth, Photosynthesis and Antioxidant Defense System of Wheat Under Zinc Oxide Nanoparticle Stress. Environ Pollut. 2019;254(Pt B):113109. PubMed PMID: 31487671.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of gibberellic acid on growth, photosynthesis and antioxidant defense system of wheat under zinc oxide nanoparticle stress. AU - Iftikhar,Azka, AU - Ali,Shafaqat, AU - Yasmeen,Tahira, AU - Arif,Muhammad Saleem, AU - Zubair,Muhammad, AU - Rizwan,Muhammad, AU - Alhaithloul,Haifa Abdulaziz S, AU - Alayafi,Aisha A M, AU - Soliman,Mona H, Y1 - 2019/08/28/ PY - 2019/07/12/received PY - 2019/08/11/revised PY - 2019/08/23/accepted PY - 2019/9/6/pubmed PY - 2019/11/28/medline PY - 2019/9/6/entrez KW - Antioxidant KW - Gibberellic acid KW - Phytotoxicity KW - Wheat KW - Zinc oxide nanoparticles SP - 113109 EP - 113109 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 254 IS - Pt B N2 - The production and soil accumulation of nanoparticles (NPs) from the industrial sector has increased concerns about their toxic effects in plants which needs the research to explore the ways of reducing NPs toxicity in pants. The gibberellic acid (GA) has been found to reduce abiotic stresses in plants. However, the effect of GA in reducing zinc oxide (ZnO) NPs-mediated toxicity in plants remains unclear. In this study, foliar application of GA was used to explore the possible role in reducing ZnO NPs toxicity in wheat (Triticum aestivum L.) plants. The plants were grown in pots spiked with ZnO NPs (0, 300, 600, 900, 1200 mg/kg) and GA (0, 100, 200 mg/L) was foliar sprayed at different times during the growth period under ambient environmental conditions. Our results demonstrated that GA inhibited the toxicity of ZnO NPs in wheat especially at higher levels of NPs. The GA application improved the plant biomass, photosynthesis, nutrients, and yield under ZnO NPs stress. The GA reduced the Zn accumulation, and reactive oxygen species generation in plants caused by toxicity of NPs. The protective effect of GA in decreasing ZnO NPs-induced oxidative stress was related to GA-mediated enhancement in antioxidant enzymes in plants. The role of GA in enhancing tolerance of wheat against ZnO NPs was further confirmed by the enhancement in nutrient contents in shoots and roots of wheat. Overall, our study provides the evidence that GA can reduce ZnO NPs-induced toxicity in wheat and probably in other crops which needs further in-depth investigation. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/31487671/Effect_of_gibberellic_acid_on_growth_photosynthesis_and_antioxidant_defense_system_of_wheat_under_zinc_oxide_nanoparticle_stress_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(19)33791-1 DB - PRIME DP - Unbound Medicine ER -