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AuthorXu, Zishu
AuthorPan, Jianmin
AuthorUllah, Najeeb
AuthorDuan, Yi
AuthorHao, Ruiyong
AuthorLi, Juanjuan
AuthorHuang, Qian
AuthorXu, Ling
Available date2023-05-10T07:25:30Z
Publication Date2023-05-01
Publication NamePlant Physiology and Biochemistry
Identifierhttp://dx.doi.org/10.1016/j.plaphy.2023.107701
ISSN09819428
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85153317547&origin=inward
URIhttp://hdl.handle.net/10576/42531
AbstractChromium (Cr) in the soil is one of the major pollutants for agricultural production. This study examined the efficiency of sunflower plants to remediate Cr-contaminated soils using a plant growth regulator, 5-aminolevolinic acid (ALA). At six leaf stage, sunflower plants were exposed to soil-applied Cr (0.15 g kg−1), manganese (Mn, 0.3 g kg−1) and trisodium (S,S)-ethylenediamine-N,N′-disuccinic acid (EDDS, 2.5 mmol kg−1), ALA (10 mg L−1) was sprayed. After ALA treatment, the plants were harvested for further biochemical analyses. Results showed that EDDS and Mn improved the Cr accumulation but restrained plant growth. Conversely, ALA improved the growth of Cr-stressed plants by promoting chlorophyll concentration in the top fully expanded leaves. The bioaccumulation quantity and removal efficiency of sunflowers treated by Cr + EDDS + ALA was improved by 47.92% and 47.94%, respectively, as compared to the Cr treatment. This was further supported by qRT-PCR analysis, where the expression of heavy metal transport genes such as ZIP6 and NRAMP6 and subsequently Cr accumulation in sunflower tissues increased by EDDS, Mn, and ALA application. However, compared with other treatments, ALA ameliorated cellular injury from Cr-stress by uptake or movement of Cr prevention, modulation of antioxidant enzymes, and elimination of reactive oxygen species. Our study suggested that ALA as an ideal option for the phytoremediation of Cr-contaminated soils.
SponsorThe research was sponsored by the Science and Technology Program of Zhejiang Province (2022C02034), and Fundamental Research Funds of Zhejiang Sci-Tech University (14042216-Y). We thank Dr. Li Xie at Bio-ultrastructure Analysis Laboratory of Analysis Center of Agrobiology and Environmental Sciences, Zhejiang University. We also thank Rui Sun from the Agricultural Experiment Station of Zhejiang University for his assistance.
Languageen
PublisherElsevier
Subject5-Aminolevolinic acid
Accumulation of chromium
EDDS
Helianthus annuus L.
Synergistic effect
Title5-Aminolevulinic acid mitigates the chromium-induced changes in Helianthus annuus L. as revealed by plant defense system enhancement
TypeArticle
Volume Number198
dc.accessType Full Text


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