Exogenous proline enhances growth, mineral uptake, antioxidant defense, and reduces cadmium-induced oxidative damage in young date palm ( Phoenix dactylifera L.)

Zouari, Mohamed; Elloumi, Nada; Ahmed, Chedlia Ben; Delmail, David; Rouina, Béchir Ben; Abdallah, Ferjani Ben; Labrousse, Pascal

doi:10.1016/j.ecoleng.2015.11.016

Cited by 74 publications

(30 citation statements)

References 44 publications

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“…Islam et al, 2009;Siripornadulsil et al, 2002;Sharma and Dietz, 2006). Moreover, osmoregulatory molecules such as proline can act as antioxidants (Zheng et al, 2015;Zouari et al, 2016). The present study was unable to determine a role for proline or glycine betaine accumulation in the studied phytochromes among genotypes in the presence of Cd upon comparison with the control condition ( Fig.…”

Section: Discussionmentioning

confidence: 58%

Phytochromes are key regulators of abiotic stress responses in tomato

Gavassi

Monteiro

Campos

et al. 2017

Scientia Horticulturae

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A B S T R A C TPhytochromes are the best characterized and most frequently studied plant photoreceptors. A plethora of studies have revealed important roles for phytochromes in plant development, and more recently, evidence indicates that these photoreceptors also modulate responses to a multitude of abiotic and biotic stresses. Thus, the present work aimed to investigate whether tomato phytochromes phyA, phyB1 and phyB2 are involved with responses to low water potential (polyethylene glycol 6000 at Ψ w of −0.3 MPa), high salinity (100 mM NaCl), cadmium contamination (65 mM CdCl 2 ), high temperature (42°C for six hours during three days) and ultraviolet B radiation (UV-B − 280-320 nm for eight hours during three days) stresses. For this purpose, seedlings of tomato mutants impacted by phytochrome A (fri), phytochrome B1 (tri) and phytochrome B2 (phyB2) were subjected to abiotic stresses and evaluated for their growth, pigment and osmoprotectant accumulation and lipid peroxidation. Under the conditions of this study, the results did not shown large variations of phyA mutant when compared to the wild genotype. However, the tomato phytochromes B1 and B2 mainly act as negative regulators of growth, pigment maintenance and osmoprotectant accumulation during responses to the different abiotic stresses.

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Section: Discussionmentioning

confidence: 58%

Phytochromes are key regulators of abiotic stress responses in tomato

Gavassi

Monteiro

Campos

et al. 2017

Scientia Horticulturae

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“…Cd directly or indirectly affects photosynthesis by reducing or preventing the uptake of elements like Zn, Fe and Cu, and in turn blocking enzyme activation and respiration (Seregin and Ivanov, 2001). Therefore, destructive effects of heavy metals on some physiological processes of plants such as photosynthesis, water relations, and mineral nutrition (Zouari et al, 2016) As the duration and degree of the stress increases, these structures gradually degrade, and a morphological, physiological and biochemical decay process which ends with the plant's death begins (Shahid et al, 2017). In the present study, the number of stomata on both surfaces of the lemon balm leaves decreased parallel to the increase in the concentration of Cd.…”

Section: Discussionmentioning

confidence: 64%

Effects of cadmium-induced stress on essential oil production, morphology and physiology of lemon balm (Melissa officinalis L., Lamiaceae)

Kılıç¹

2017

Appl Ecol Env Res

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Abstract. Secondary metabolites, which have an important role in regulating plants' relationship with the environment, are affected by soil pollution. Thus, it is important to describe the mechanism in which lemon balm's (Melissa officinalis L. subsp. officinalis) secondary metabolite accumulation is affected by Cadmium (Cd) stress. For this purpose, lemon balms seedlings that were grown in a controlled environment were exposed to increasing Cd stress and the relationship of lemon balm's growth and development with EO (essential oil) accumulation were investigated. Morphological, anatomical and physiological parameters of plants' that were exposed to Cd significantly decreased in parallel with increasing Cd concentration. Impairments in growth and development of lemon balm due to increasing Cd concentrations also affected EO accumulation. However, this destructive effect was most evident on EO accumulation amongst all investigated parameters. Furthermore, amount of EO decreased by 97%, at the highest concentration. In conclusion, Cd might have damaged both the EO producing mechanism and the structures that produce EO by inhibiting plant growth. Therefore it is important to reveal the responses of all parameters which affect EO production of medicinal plants under various stress conditions.

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“…Other samples of leaves were oven-dried at 70°C to a constant 3 BioMed Research International Table 1: Variables and nutrient screened on the Plackett-Burman design in gibberellic acid production by F. oxysporum. BioMed Research International weight as described previously by Zouari et al [17]. Finally, the oven-dried plant materials were ground in a grinder.…”

Section: Methodsmentioning

confidence: 99%

A New Endophytic Fusarium Oxysporum Gibberellic Acid: Optimization of Production Using Combined Strategies of Experimental Designs and Potency on Tomato Growth under Stress Condition

Rhouma

Kriaa

Nasr

et al. 2020

BioMed Research International

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This study reports the potential of the endophytic fungi identified as a Fusarium oxysporum to produce gibberellic acid (GA3). The GA3 production was confirmed by high performance liquid chromatography. To improve the production of this phytohormone under solid state fermentation (SSF), successive optimization strategies were used. Firstly, Plackett-Burman design was applied for screening medium components and culture condition. Under the optimized condition, GA3 yield (7.14 g/kg) was 2.62-fold higher than by the use of the initial condition (2.72 g/kg). The concentration of the most influential parameters and their interaction were optimized with a Box-Behnken experimental design. The optimized condition led to a 1.14-fold enhancement in GA3 production, reaching 8.16 g/kg. The GA3 crude extract obtained by SSF was then used to study its ameliorative role on adverse salinity effect on tomato plants (Solanum lycopersicum L.). The interactive effects of different GA3 concentrations were examined on morphological and physiological parameters of tomato plants. The application of GA3 (10 -6 M) under salt stress condition (100 mM) was found to improve growth and physiological parameters including plant height, total chlorophyll, starch, and proline contents. The exogenous application of GA3 is a potent strategy to reverse abiotic stress that affect the agricultural productivity and limit plant growth and yield.

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Exogenous proline enhances growth, mineral uptake, antioxidant defense, and reduces cadmium-induced oxidative damage in young date palm ( Phoenix dactylifera L.)

Cited by 74 publications

References 44 publications

Phytochromes are key regulators of abiotic stress responses in tomato

Phytochromes are key regulators of abiotic stress responses in tomato

Effects of cadmium-induced stress on essential oil production, morphology and physiology of lemon balm (Melissa officinalis L., Lamiaceae)

A New Endophytic Fusarium Oxysporum Gibberellic Acid: Optimization of Production Using Combined Strategies of Experimental Designs and Potency on Tomato Growth under Stress Condition

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