Bioremediation of potentially toxic elements of sewage sludge using sunflower (Heliantus annus L.) in greenhouse and field conditions

Bayat, M. Ghareh Sheikh; Faramarzi, Azita; Ajalli, Jalil; Abdi, Mehrdad; Nourafcan, Hassan

doi:10.1007/s10653-021-01018-6

Cited by 11 publications

(5 citation statements)

References 25 publications

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“…In this experiment, the carotenoid content decreased less than the chlorophyll content, which is consistent with Singh & Tewari (2003) conclusion that heavy metals generally have a greater effect on chlorophyll than carotenoids. Bayat et al (2022) found that carotenoids of Heliantus annus increased under heavy metal stress, and played an important role in scavenging reactive oxygen species and reducing photochemical damage. However, at high Cd 2þ concentration (0.30-0.45 mM), carotenoid content of M. korsakowii decreased significantly, indicating that the degree of Cd 2þ stress exceeded its antioxidant capacity at this time.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic response, antioxidase activity, and cadmium uptake and translocation inMonochoria korsakowiiwith cadmium exposure

Zhou

Xin

Tian

2022

Water Science and Technology

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To identify the tolerance mechanisms of wetland plants exposed to heavy metal, a hydroponic experiment was used to investigate variations in photosynthetically physiological parameters and antioxidant enzyme activities in leaves of Monochoria korsakowii exposed to 0.05, 0.10, 0.15, 0.30, and 0.45 mM Cd2+ for 7 d. The Cd2+ concentrations in the plant roots, stems, and leaves were also investigated. Cd2+ exposure significantly decreased the total chlorophyll content, net photosynthetic rate, intercellular carbon dioxide concentration, and stomatal conductance, while stomatal limitation value had the opposite trend (P < 0.05). During Cd2+ stress, ascorbate peroxidase activity significantly increased (P < 0.05). The translocation factor for Cd2+ was significantly lower than that of the control, and both were less than 1 (P < 0.05). Cd2+ stress damaged the photosynthetic apparatus in the leaves. During Cd2+ stress, M. korsakowii alleviated oxidative stress by increasing the activities of antioxidant enzymes, such as APX. Under 0.45 mM Cd2+ stress, increased heat dissipation was responsible for alleviating the photooxidative damage to photosynthetic organs in the leaves. Meanwhile, the majority of Cd2+ was immobilized in the roots, thus alleviating excessive Cd2+ phytotoxicity in aboveground parts. Generally, M. korsakowii has potential application in the phytoremediation of low-cadmium-polluted water. HIGHLIGHTS Ascorbate peroxidase plays a significant role in alleviating oxidative stress in the leaves. Cadmium immobilized in roots accounted for the plant tolerance to cadmium exposure. M. korsakowii has potential application in phytopremediation of low-cadmium polluted water.

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Section: Discussionmentioning

confidence: 99%

Photosynthetic response, antioxidase activity, and cadmium uptake and translocation inMonochoria korsakowiiwith cadmium exposure

Zhou

Xin

Tian

2022

Water Science and Technology

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“…Tryptophan seed treatment could affect sunflower plant morphology and physiology under stress. Sunflower is generally considered a fast-growing crop and stress-tolerant to heavy metal stress [ 53 , 54 ]. In our experiment, the results showed that root and shoot length was negatively affected by Cd stress.…”

Section: Discussionmentioning

confidence: 99%

Tryptophan Seed Treatment Improves Morphological, Biochemical, and Photosynthetic Attributes of the Sunflower under Cadmium Stress

Hussain,

Kaousar,

Ali

et al. 2024

Plants

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Tryptophan, as a signal molecule, mediates many biotic and environmental stress-induced physiological responses in plants. Therefore, an experiment was conducted to evaluate the effect of tryptophan seed treatment in response to cadmium stress (0, 0.15, and 0.25 mM) in sunflower plants. Different growth and biochemical parameters were determined to compare the efficiency of the treatment agent. The results showed that cadmium stress reduced the growth attributes, including root and shoot length, dry and fresh weight, rate of seed germination, and the number of leaves. Cadmium stress also significantly reduced the contents of chlorophyll a, b, and total chlorophyll, carotenoid contents, phenolics, flavonoids, anthocyanin, and ascorbic acid. Whereas cadmium stress (0.15 and 0.25 mM) enhanced the concentrations of malondialdehyde (45.24% and 53.06%), hydrogen peroxide (−11.07% and 5.86%), and soluble sugars (28.05% and 50.34%) compared to the control. Tryptophan treatment decreased the effect of Cd stress by minimizing lipid peroxidation. Seed treatment with tryptophan under cadmium stress improved the root (19.40%) and shoot length (38.14%), root (41.90%) and shoot fresh weight (13.58%), seed germination ability (13.79%), average leaf area (24.07%), chlorophyll b (51.35%), total chlorophyll (20.04%), carotenoids (43.37%), total phenolic (1.47%), flavonoids (19.02%), anthocyanin (26.57%), ascorbic acid (4%), and total soluble proteins (12.32%) compared with control conditions. Overall, the tryptophan seed treatment showed positive effects on sunflower plants’ growth and stress tolerance, highlighting its potential as a sustainable approach to improve crop performance.

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“…Additionally, the safe disposal (bioremediation) of sewage sludge is of economic and environtmnal signi cance. The use of sewage sludge, as an organic waste, for the treatment of soils, can provide plants with their required micro-and macronutrietns (Bostani, 2018;Bayat et al, 2022). However, there are also some issues with the use of sewage sludege, such as the high concentration of heavy metals inclduing lead (Pb), cadmium (Cd), copper (Cu) and zinc (Zn), negativly affecting the quality of crop plants (Elloumi et al, 2016;Poykio et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Estimating the carcinogenic and non-carcinogenic indices of lead for the vegetables fertilized with sewage sludge

Tehraninejad,

Bostani

2024

Preprint

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Due to the presence of heavy metals in sewage sludge, their use for the fertilization of vegetables is of environmental and health significance. The objective was to investigate the non-carcinogenic and carcinogenic indices of lead (Pb), for children and adults, in the greenhouse vegetables fertilized with sewage sludge. The experiment was a factorial with three replicates, in which five levels of sewage sludge (0 (L1), 1.5 (L2), 3.0 (L3), 4.5 (L4) and 6% (L5)) were tested on spring onion (Allium fistulosum L.), radish (Raphanus satvius L.), cress (Lepidium sativum L.), basil (Ocimum basilicum), purslanes (Portulaca sp.), and summer savory (Satureja sp.). The effects of sewage sludge, vegetable type, and their interaction significantly affected the morphological properties of vegetables, average daily doses (ADD), hazard quotient (HQ), and cancer risk (CR) (P ≤ 0.01) in both children and adults. The highest and the least ADD was resulted by cress and savory. The L3 level increased HQ by 32% compared with control, which is five times higher than the safety level. Cress had the highest CR for children (0.0115) and adults (0.0037). According to the results the occurrence of cancer, which was likely for both children and adults, due to the consumption of vegetables, fertilized with sewage sludge, was three times higher for children. If the use of sewage sludge is desirable for the production of agricultural and horticultural crops, finding methods, which may decrease the concentration of heavy metals in sewage sludge is of outmost significance.

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Bioremediation of potentially toxic elements of sewage sludge using sunflower (Heliantus annus L.) in greenhouse and field conditions

Cited by 11 publications

References 25 publications

Photosynthetic response, antioxidase activity, and cadmium uptake and translocation inMonochoria korsakowiiwith cadmium exposure

Photosynthetic response, antioxidase activity, and cadmium uptake and translocation inMonochoria korsakowiiwith cadmium exposure

Tryptophan Seed Treatment Improves Morphological, Biochemical, and Photosynthetic Attributes of the Sunflower under Cadmium Stress

Estimating the carcinogenic and non-carcinogenic indices of lead for the vegetables fertilized with sewage sludge

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