Effects of Cadmium Stress on Antioxidant Enzymes Activities and Soluble Protein Content in <i>Cyphomandra betacea</i> Seedlings

Qing, Mei; Lin, Lijin; Sun, Jing; Liao, Ming’an

doi:10.1088/1755-1315/199/3/032025

Cited by 6 publications

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“…Its fruit is rich in various nutrients and anthocyanins, and is valued for its ornamental and nutritional qualities 20 . An earlier investigation indicated that an exposure to a certain Cd concentration decreases the antioxidant enzyme and soluble protein contents of C. betacea seedlings 21 . Therefore, in order to enhance the tolerance of C. betacea seedlings to Cd stress, this experiment studied the effects of various concentrations of uniconazole on the physiological characteristics and Cd accumulation of C. betacea seedlings, and screened out the optimal concentration that can promote growth of C. betacea seedlings and reduce its Cd content under Cd conditions.…”

Section: Introductionmentioning

confidence: 99%

Effects of uniconazole on the physiological characteristics and cadmium accumulation of Cyphomandra betacea seedlings

Huang

Xiao

Dong

et al. 2021

Env Prog and Sustain Energy

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To determine if the uniconazole concentration(s) whether could enhance the cadmium (Cd) tolerance of Cyphomandra betacea seedlings, the effects of spray treatments with various uniconazole concentrations (0, 5, 10, 20, and 50 mg/L) on the physiological characteristics and Cd accumulation of C. betacea seedlings were studied in a hydroponic experiment. The results indicated that uniconazole significantly decreased the Cd content of C. betacea seedling stems, leaves, and shoots, but significantly increased the biomass of all analyzed seedling parts. Additionally, the leaf chlorophyll a, chlorophyll b, and carotenoid contents as well as the net photosynthetic rate, transpiration rate, stomatal conductance, and CO 2 concentration of intercellular were higher for the uniconazole-treated C. betacea seedlings than for the control seedlings. The optimal uniconazole concentration significantly promoted the superoxide dismutase, peroxidase, and catalase activities and the soluble protein content of C. betacea leaves. Moreover, uniconazole decreased the soluble sugar content of the C. betacea roots and stems, but had the opposite effect on the soluble sugar content of the leaves and shoots. The 20 mg/L uniconazole treatment resulted in the highest C. betacea seedling biomass and the lowest Cd content, indicating this concentration may be useful for improving C. betacea seedling growth in Cd-contaminated soils.

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Section: Introductionmentioning

confidence: 99%