Citric Acid and Poly-glutamic Acid Promote the Phytoextraction of Cadmium and Lead in Solanum nigrum L. Grown in Compound Cd–Pb Contaminated Soils

Wang, Yu; Duan, Weidong; Lv, Chao; Wei, Zhuangzhuang; Zhu, Yanping; Yang, Qing; Liu, Ying; Shen, Zhenguo; Xia, Yan; Duan, Kun; Quan, Lingtong

doi:10.1007/s00128-022-03682-5

Cited by 4 publications

(1 citation statement)

References 41 publications

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“…ramosa Hort.) [50], wheat (Triticum aestivum L.) [51], cucumber (Cucumis sativus L.) [52], and Solanum nigrum [53]. In our study, the findings demonstrated that PGA significantly improved S. miltiorrhiza growth, as indicated by basal diameter, plant height, shoot and root biomass, and root volume, which agreed with previous results in other plants [36,50].…”

Section: Discussionsupporting

confidence: 92%

Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in Salvia miltiorrhiza

Shan,

Zhang,

Luo

et al. 2024

Agronomy

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Salvia miltiorrhiza Bunge is a traditional medicinal plant in China and poly-glutamic acid (PGA) is a valuable biopolymer. However, it is unclear whether PGA promotes growth and the accumulation of main medicinal components in S. miltiorrhiza. To elucidate this scientific question, the influences of PGA on the growth, physiological characteristics, and accumulation of main medicinal components in S. miltiorrhiza were explored through a pot experiment. The results revealed that PGA significantly promoted basal diameter, plant height, shoot and root biomass, as well as root volume, compared with control. PGA also increased SPAD value, net photosynthetic rate, actual and maximum photochemical efficiency of photosynthetic system II, photochemical quenching, and electronic transfer rate. Meanwhile, PGA increased transpiration rate, stomatal conductance, water use efficiency, leaf relative water content, and the contents of soluble protein, soluble sugar, and proline. Furthermore, PGA increased the activities of antioxidant enzymes and the contents of antioxidants. The above findings imply that PGA facilitated S. miltiorrhiza growth by enhancing photosynthetic performance, water metabolism, and antioxidant capacity. Additionally, PGA significantly improved the yield of rosmarinic acid, salvianolic acid B, dihydrotanshinone, cryptotanshinone, tanshinone I, and tanshinone ⅡA in roots by up-regulating the transcript levels of genes responsible for their biosynthesis. Our findings indicated that PGA promoted S. miltiorrhiza growth and the accumulation of main medicinal components in roots.

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Section: Discussionsupporting

confidence: 92%

Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in Salvia miltiorrhiza

Shan,

Zhang,

Luo

et al. 2024

Agronomy

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Evaluating the Ability of Mangrove Plants in the Asalouyeh Region for Heavy Metals Removal

Mahdavian

2023

Russ J Plant Physiol

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Poly-glutamic acid reinforces wheat cadmium tolerance by modulating ascorbic acid and glutathione metabolism

Wu,

Zhang,

2024

PLANT SOIL ENVIRON

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The rapid development of cities and modern industry has brought many environmental problems, among which heavy metal pollution has become a widely concerned environmental issue. Excess heavy metals pollute water and soil and further induce plant stress, thereby inhibiting growth and production, especially for food crops. It has been documented that many heavy metals could induce stress to wheat crops, such as cadmium (Cd) (Hussain et al. 2022), mercury (Hg) (Ibrahim et al. 2022), chromium (Cr) (Rafique et al. 2022), copper (Cu) (Alshegaihi et al. 2023) and lead (Pb) (Perveen et al. 2022). Among these heavy metals, Cd usually causes excessive production and massive accumulation of reactive oxygen species (ROS), thereby inducing plant peroxide damage. In this way, Cd breaks plant redox homeostasis and inhibits growth. Fortunately, plants can adapt the antioxidant system to keep ROS at a low level. Thus, plants can maintain redox homeostasis by employing the antioxidant system to relieve the toxic influence of Cd. As reported, the antioxidant defence system contained enzymatic and non-enzymatic antioxidants (Mir et al. 2022. Ascorbic acid (AsA) and glutathione (GSH) are two non-enzymatic antioxidants and display an important part in keeping the redox homeostasis, thereby protecting plants against the peroxide damage caused by various environmental stresses (Zhu et al. 2021, Zhao et al. 2023. Plants may modulate AsA and GSH contents by controlling their recycling and biosynthetic metabolism (Zhu et al. 2021, Zhao et al. 2023. In plants, AsA biosynthesis is mainly

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Citric Acid and Poly-glutamic Acid Promote the Phytoextraction of Cadmium and Lead in Solanum nigrum L. Grown in Compound Cd–Pb Contaminated Soils

Cited by 4 publications

References 41 publications

Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in Salvia miltiorrhiza

Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in Salvia miltiorrhiza

Evaluating the Ability of Mangrove Plants in the Asalouyeh Region for Heavy Metals Removal

Poly-glutamic acid reinforces wheat cadmium tolerance by modulating ascorbic acid and glutathione metabolism

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