Copper toxicity affects phosphorus uptake mechanisms at molecular and physiological levels in Cucumis sativus plants

Feil, Sebastian B.; Pii, Youry; Valentinuzzi, Fabio; Tiziani, Raphael; Mimmo, Tanja; Cesco, Stefano

doi:10.1016/j.plaphy.2020.10.023

Cited by 44 publications

(32 citation statements)

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“…Leaf chlorosis is the most frequent and the first symptom appearing of Cu toxicity [8,17]. Accordingly, in the present work, chlorophyll content was significantly reduced in the leaves of both plants from +Cu condition and from ES + Cu one.…”

Section: Discussionsupporting

confidence: 54%

“…Excess Cu induces the production of high levels of reactive oxygen species (ROS), which cause oxidative degradation of cell membrane lipids, resulting in the leakage of the cell contents, and affects photosynthetic functions [16]. Furthermore, excess Cu interferes with the acquisition processes of other nutrients [17][18][19][20][21], leading to nutritional imbalances [22]. For instance, being sulfur (S) directly involved in the oxidative stress response, plants exposed to high Cu concentrations usually show an enhanced demand for S to sustain the increased production of thiols (mainly glutathione), which are the main plant antioxidants and heavy metal chelators implicated in detoxification [8,23].…”

Section: Introductionmentioning

confidence: 99%

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Potential Use of Copper-Contaminated Soils for Hemp (Cannabis sativa L.) Cultivation

et al. 2021

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To mitigate climate change, reducing greenhouse gas emissions can be achieved by decreasing the use of fossil fuels and increasing that of alternative sources, such as energy crops. However, one of the most important problems in the use of biomass as a fuel is that of changing soil use and consumption, leading to competition with food crops. We addressed the topic by evaluating the possibility to exploit contaminated areas for energy crops cultivation. Indeed, soil contamination makes land inappropriate for cultivation, with damaging consequences for ecosystems, as well as posing serious health hazards to living beings. Specifically, this work aimed to evaluate the ability of hemp (Cannabis sativa L.) plants to grow on a copper (Cu)-contaminated medium. In addition, the effectiveness of an environment-friendly treatment with sulfate in improving plant ability to cope with Cu-induced oxidative stress was also explored. Results showed that plants were able to grow at high Cu concentrations. Therefore, hemp could represent an interesting energy crop in Cu-contaminated soils. Although the response of Cu-treated plants was evidenced by the increase in thiol content, following modulation of sulfur metabolism, it remains to be clarified whether the use of exogenous sulfate could be an agronomic practice to improve crop performance under these edaphic conditions.

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Section: Discussionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Potential Use of Copper-Contaminated Soils for Hemp (Cannabis sativa L.) Cultivation

et al. 2021

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“…Most of these genes have been reported to be highly induced by P deficiency (Wang et al, 2018 ). In cucumber, six genes involved in the phosphate uptake have been identified, namely, CsPT1.3, CsPT1.4, CsPT1.7, CsPT1.9, CsPT1.11 , and Cucsa383630.1 (Naureen et al, 2018 ; Feil et al, 2020 ). However, under the conditions, the expression of CsPT1.7 and CsPT1.11 was not detectable under P starvation (data not shown).…”

Section: Resultsmentioning

confidence: 99%

Can Inoculation With the Bacterial Biostimulant Enterobacter sp. Strain 15S Be an Approach for the Smarter P Fertilization of Maize and Cucumber Plants?

et al. 2021

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Phosphorus (P) is an essential nutrient for plants. The use of plant growth-promoting bacteria (PGPB) may also improve plant development and enhance nutrient availability, thus providing a promising alternative or supplement to chemical fertilizers. This study aimed to evaluate the effectiveness of Enterobacter sp. strain 15S in improving the growth and P acquisition of maize (monocot) and cucumber (dicot) plants under P-deficient hydroponic conditions, either by itself or by solubilizing an external source of inorganic phosphate (Pi) [Ca3(PO4)2]. The inoculation with Enterobacter 15S elicited different effects on the root architecture and biomass of cucumber and maize depending on the P supply. Under sufficient P, the bacterium induced a positive effect on the whole root system architecture of both plants. However, under P deficiency, the bacterium in combination with Ca3(PO4)2 induced a more remarkable effect on cucumber, while the bacterium alone was better in improving the root system of maize compared to non-inoculated plants. In P-deficient plants, bacterial inoculation also led to a chlorophyll content [soil-plant analysis development (SPAD) index] like that in P-sufficient plants (p < 0.05). Regarding P nutrition, the ionomic analysis indicated that inoculation with Enterobacter 15S increased the allocation of P in roots (+31%) and shoots (+53%) of cucumber plants grown in a P-free nutrient solution (NS) supplemented with the external insoluble phosphate, whereas maize plants inoculated with the bacterium alone showed a higher content of P only in roots (36%) but not in shoots. Furthermore, in P-deficient cucumber plants, all Pi transporter genes (CsPT1.3, CsPT1.4, CsPT1.9, and Cucsa383630.1) were upregulated by the bacterium inoculation, whereas, in P-deficient maize plants, the expression of ZmPT1 and ZmPT5 was downregulated by the bacterial inoculation. Taken together, these results suggest that, in its interaction with P-deficient cucumber plants, Enterobacter strain 15S might have solubilized the Ca3(PO4)2 to help the plants overcome P deficiency, while the association of maize plants with the bacterium might have triggered a different mechanism affecting plant metabolism. Thus, the mechanisms by which Enterobacter 15S improves plant growth and P nutrition are dependent on crop and nutrient status.

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“…Despite their low requirements, plants use soil sulphate to synthesize an amino acid, cysteine, which is used for a variety of sulfur-containing compounds, such as glutathione (GSH), methionine, proteins, lipids, coenzymes, and various secondary metabolites (Hawkesford & De Kok, 2007;Maruyama-Nakashita & Ohkama-Ohtsu, 2017). However, Cu participates in cellular physiological processes related to energy production, phospholipid synthesis, iron absorption and transport, and ribonucleic acid production (Alaoui-Sossé , 2004;Alam & Raza, 2001), but is toxic under high concentrations because it affects the absorption of phosphorus (Feil et al, 2020). Marques et al (2018) demonstrated that high concentrations of Cu can affect photosynthetic performance and the root morphology of H. courbaril.…”

Section: H Courbaril Seedlings Requirements For Growth Primarily N and Mnmentioning

confidence: 99%

Evaluation of Requirements and Efficiency Parameters in the Use, Absorption, and Translocation of Nutrients in the Production of Hymenaea courbaril L. Seedlings, a Fruit Tree of Neotropical Importance

Bessa¹,

Reis²,

Vitorino³

et al. 2022

JAS

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The lack of sufficient knowledge on nutritional requirements, as well as efficiency parameters, in the use, absorption, and translocation of nutrients by seedlings in developmental stages may lead to the excessive use of chemical fertilizers, which end up contaminating the environment. Therefore, this research adopted the hydroponic system to elucidate the nutritional requirements of Hymenaea courbaril L. seedlings, a fruit tree of neotropical importance, throughout its development (30, 60, 90, 120, 150, and 180 days after transplantation). Consequently, biometric data on growth and mineral nutrition were obtained and utilized to determine efficiency parameters in the use, absorption, and translocation of nutrients. Although H. courbaril leaves functioned as efficient drains throughout the development, S and Fe accumulated in the roots, owing to their not very mobile nature. The macro and micronutrients that were accumulated the most in the tissues were N and Mn, which even suggested a tendency for H. courbaril to tolerate Mn concentrations that are naturally toxic. The most efficient adoption was observed for the S and Cu nutrients, whereas the most efficiently absorbed nutrients were N (the macro and micronutrient with the greatest accumulation) and Fe (the second micronutrient with the greatest accumulation). However, the seedlings efficiently translocated Ca-N and Mn, i.e., the most accumulated nutrients. Positive effects on growth were correlated with increases in P, Ca, and Mg levels, thus signaling the importance of an optimal supply of these nutrients in obtaining healthy seedlings of this species. This work suggests that to obtain seedlings of H. courbaril in practice, the availability of N, Mn, P, Ca and Mg should be reviewed.

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Copper toxicity affects phosphorus uptake mechanisms at molecular and physiological levels in Cucumis sativus plants

Cited by 44 publications

References 65 publications

Potential Use of Copper-Contaminated Soils for Hemp (Cannabis sativa L.) Cultivation

Potential Use of Copper-Contaminated Soils for Hemp (Cannabis sativa L.) Cultivation

Can Inoculation With the Bacterial Biostimulant Enterobacter sp. Strain 15S Be an Approach for the Smarter P Fertilization of Maize and Cucumber Plants?

Evaluation of Requirements and Efficiency Parameters in the Use, Absorption, and Translocation of Nutrients in the Production of Hymenaea courbaril L. Seedlings, a Fruit Tree of Neotropical Importance

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