Mitigation of Salinity Stress and Lead Toxicity in Maize by Exogenous Application of the Sorghum Water Extract.

Autor: Rasool S; Department of Botany, The Islamia University of Bahawalpur, Bahawalnagar Campus, Bahawalnagar 62300, Punjab, Pakistan., Alhaithloul HAS; Biology Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia., Shahzad S; Department of Botany, The Islamia University of Bahawalpur, Bahawalnagar Campus, Bahawalnagar 62300, Punjab, Pakistan., Rasul F; Department of Agronomy, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan., Lihong W; College of Tourism and Geographic Science, Baicheng Normal University, Baicheng 137099, Jilin, China., Shah AN; Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Punjab, Pakistan., Nawaz M; Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Punjab, Pakistan., Ghafoor A; Department of Botany, The Islamia University of Bahawalpur, Bahawalnagar Campus, Bahawalnagar 62300, Punjab, Pakistan., Aamer M; Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, China., Hassan MU; Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, China., Ercisli S; Department of Horticulture, Faculty of Agriculture Ataturk University, Erzurum 25240, Turkiye., Alharbi RS; Biology Department, Faculty of Applied Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia., Rashed AA; Biology Department, Faculty of Applied Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia., H Qari S; Department of Biology, Al-Jumum University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2024 Mar 08; Vol. 9 (11), pp. 13041-13050. Date of Electronic Publication: 2024 Mar 08 (Print Publication: 2024).
DOI: 10.1021/acsomega.3c09495
Abstrakt: The increased concentration of lead (Pb) in soils is a serious threat to human beings and plants all over the world. Salinity stress is also a major issue across the globe, which limits crop productivity. The use of allelochemicals has become an effective strategy to mitigate the toxic effects of abiotic stresses. Sorghum is an important crop grown across the globe, and it also possesses an appreciably allelopathic potential. Therefore, this study was planned to determine the impacts of the sorghum water extract (SWE) on improving maize growth under Pb and salinity stress. The experiment included different treatments; control, SWE (3%), and different levels of Pb and salinity stress; T 1 : control, T 2 : 50 mM NaCl, T 3 : 100 mM NaCl, T 4 : 250 μM Pb, and T 5 : 500 μM Pb. Lead and salinity stress reduced the maize growth by the genesis of reactive oxygen species (ROS), as evidenced by higher production of malondialdehyde (MDA: 39.1 and 32.28%) and hydrogen peroxide (H 2 O 2 : 20.62 and 17.81%). Spraying plants with SWE improved the maize growth by increasing antioxidant activities (ascorbate peroxidase: APX, catalase: CAT, peroxidase: POD and superoxide dismutase: SOD), photosynthetic pigments, relative water contents (RWC), osmolyte accumulation (proline, total soluble proteins: TSP, free amino acids: FAA), potassium accumulation, and decreasing MDA, H 2 O 2 , sodium, chloride, and Pb accumulation. In conclusion, the application of SWE mitigates adverse impacts of Pb and salinity stresses by improving chlorophyll synthesis and osmolyte accumulation, activating the antioxidant defense system, and preventing the entry of toxic ions.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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