Impact of Zinc Excess on Germination, Growth Parameters and Oxidative Stress of Sweet Basil (Ocimum basilicum L.)

Mahmoudi, Héla; Salah, Imen Ben; Zaouali, Wafa; Zorrig, Walid; Smaoui, Ameni; Taheri, Ali; Gruber, Margaret Y.; Ouerghi, Zeineb; Hosni, Karim

doi:10.1007/s00128-021-03188-6

Cited by 12 publications

(6 citation statements)

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“…The results clearly show that the zinc accumulation in shoots as well as in roots leads to oxidative stress generation associated with the peroxidation of membrane lipids as indicated by the increase in TBARs levels in both organs (Table 3). Hence, in safflower plants, the protection against oxidative stress is not well operational which is in agreement with other results reported by Marichali et al (2014Marichali et al ( , 2016, Torasa et al (2019), andMahmoudi et al (2021).…”

Section: Discussionsupporting

confidence: 91%

“…Adverse effects of zinc could also be due to altered uptake and distribution of other essential nutrients in the plant (Benavides et al., 2005; Rout & Das 2003; Sagardoy et al., 2009). In addition, higher concentrations of zinc can induce the generation of reactive oxygen species (ROS), that in turn leads to membrane lipid peroxidation and damaging the biomolecules inside the cells, including lipids, proteins, and nucleic acids (Mahmoudi et al., 2021; Sresty & Madhava Rao, 1999). To cope with this oxidative stress, plants have developed two antioxidative systems, including (1) nonenzymatic antioxidants, such as ascorbate, gluthation, and phenolic compounds, and (2) enzymatic antioxidants, such as SOD, catalase (CAT), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX) (Mahmoudi et al., 2021; Nowak et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

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Physiological and biochemical responses of Carthamus tinctorius L. to zinc at vegetative stage

Smaoui

Mahmoudi

Medimagh

et al. 2023

J. Plant Nutr. Soil Sci.

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BackgroundEnvironment contamination with heavy metals is a major problem both to the environment and human health.AimsThe aim of this work is to evaluate the physiological, nutritional, and biochemical responses of safflower plants (Carthamus tinctorius L.) grown under different zinc concentrations at vegetative stage.MethodsThe effect of zinc on safflower plants was studied through the evaluation of growth parameters, colorimetric assay of phenolic compounds, and antioxidant enzymes activities.ResultsZinc inhibited shoot and root growth and resulted in leaf chlorosis at 75, 225, and 1000 µM zinc concentrations. At higher concentrations, Zn also reduced photosynthetic parameters except the internal CO2 concentration that was higher at these levels. Zinc reduced potassium content of the shoots at 75 µM of zinc. The presence of Zn at 1000 µM concentration reduced the iron content and led to the accumulation of the copper content in the shoots. In roots, iron and copper contents were reduced from 15 µM Zn. In the case of copper, this content was canceled out at 225 and 1000 µM of zinc. Lipid peroxidation (evaluated as thiobarbituric acid reactive substances content) increased with zinc treatment. Safflower plants generally responded to this oxidative stress by enhancing the antioxidant enzymes activities, namely, catalase, ascorbate peroxidase, and guaiacol peroxidase. There was no increase in superoxide dismutase activity in shoots and roots, except at the highest zinc concentration in the roots. Total soluble sugars (TSS) and starch contents increased, whereas proline content decreased in shoots. In roots, TSS was not altered, whereas starch was decreased, and proline content was increased. There were no changes in the protein content in both organs under different Zn treatments. There was a gradual increase in the total polyphenols in shoots with increasing zinc concentration; however, no changes were observed in the roots. Flavonoids decreased in roots at 225 and 1000 µM Zn. Total antioxidant activity increased in shoots but it decreased in roots with increasing zinc concentration. The inverse trend was observed for the DPPH and ABTS tests.ConclusionsOur results suggest that the decline in safflower plant growth under high zinc concentrations is related to altered photosynthetic activity and antioxidant response to oxidative stress.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Physiological and biochemical responses of Carthamus tinctorius L. to zinc at vegetative stage

Smaoui

Mahmoudi

Medimagh

et al. 2023

J. Plant Nutr. Soil Sci.

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“…As with other heavy metals, Zn has a negative effect on plant growth [45]. Under Zn excess, a decrease in growth was observed in plants: B. juncea and B. napus [28], Zea mays [46], Polypogon monspeliensis [47], Ocimum basilicum [48]. In the present study, the Zn concentration of 50 mg kg −1 caused a slightly stimulated effect on the growth of yellow mustard.…”

Section: Discussionsupporting

confidence: 51%

Effect of Zinc Excess on Some Physiological Parameters and on the Fatty Acids Profile of Sinapis alba L. and Brassica juncea L. (Czern)

Repkina,

Murzina,

Voronin

et al. 2023

Horticulturae

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Zinc (Zn) is a vital micronutrient for all living organisms, but in high concentrations, it is a major anthropogenic pollutant. In this study, it was investigated the effect of zinc excess concentrations (50, 100, and 150 mg kg−1) in the substrate on some physiological parameters and the dynamics of fatty acid (FA) content in yellow mustard (Sinapis alba L. cv. Belgia) and oriental mustard (Brassica juncea L. (Czern) cv. Slavanka). The Zn concentration of 50 mg kg−1 did not affect the physiological parameters of yellow mustard, whereas some physiological parameters slightly decreased in oriental mustard. Moreover, this concentration stimulated an increase in total and unsaturated FAs content in leaves of both species, along with high Zn accumulation by both species. The Zn concentrations of 100 and 150 mg kg−1 in substrate had a negative effect on the state of plants as measured by the studied physiological parameters and caused different changes in FAs content in yellow and oriental mustard. Particularly, the total amount of FA increased in comparison to the control, but this increase was due to an elevation in saturated FA (SFA) content. At the same time, the total FA content in oriental mustard slightly decreased while the proportion of unsaturated FAs to SFA kept rising. According to the present data and analysis of the available literature, two strategies of adaptation to heavy metals were suggested through the changes in FAs: height-resistant horticultural plant species on the one side and sensitive species on the other.

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“…However, the content of RA in the cultured hairy roots of green basil was higher than that of purple basil under both light and dark conditions ( Kwon et al, 2021 ). It was shown that excess zinc decreased chlorophyll content, total phenol and total flavonoid contents, as well as TBARS levels, which indicate an oxidative burst in O. basilicum ( Mahmoudi et al, 2021 ). A study also indicated that O. basilicum grown on media supplemented with copper oxide nanoparticles (CuO-NPs) increased phenolic contents, flavonoid contents, and antioxidant activities compared to manganese oxide nanoparticles (MnO-NPs) and control.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Ocimum basilicum L. and Its Main Ingredients on Respiratory Disorders: An Experimental, Preclinical, and Clinical Review

2022

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Ocimum basilicum L. (O. basilicum) and its constituents show anti-inflammatory, immunomodulatory, and antioxidant effects. The plant has been mainly utilized in traditional medicine for the treatment of respiratory disorders. In the present article, effects of O. basilicum and its main constituents on respiratory disorders, assessed by experimental and clinical studies, were reviewed. Relevant studies were searched in PubMed, Science Direct, Medline, and Embase databases using relevant keywords including “Ocimum basilicum,” “basilicums,” “linalool,” “respiratory disease,” “asthma,” “obstructive pulmonary disease,” “bronchodilatory,” “bronchitis,” “lung cancer,” and “pulmonary fibrosis,” and other related keywords.The reviewed articles showed both relieving and preventing effects of the plant and its ingredients on obstructive pulmonary diseases such as chronic obstructive pulmonary disease (COPD), asthma, and other respiratory disorders such as bronchitis, aspergillosis tuberculosis, and lung cancer. The results of the reviewed articles suggest the therapeutic potential of O. basilicum and its constituent, linalool, on respiratory disorders.

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Impact of Zinc Excess on Germination, Growth Parameters and Oxidative Stress of Sweet Basil (Ocimum basilicum L.)

Cited by 12 publications

References 43 publications

Physiological and biochemical responses of Carthamus tinctorius L. to zinc at vegetative stage

Physiological and biochemical responses of Carthamus tinctorius L. to zinc at vegetative stage

Effect of Zinc Excess on Some Physiological Parameters and on the Fatty Acids Profile of Sinapis alba L. and Brassica juncea L. (Czern)

The Effect of Ocimum basilicum L. and Its Main Ingredients on Respiratory Disorders: An Experimental, Preclinical, and Clinical Review

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