Combined toxic effects and DNA damage to two plant species exposed to binary metal mixtures (Cd/Pb)

Lanier, Caroline; Bernard, Fabien; Dumez, Sylvain; Leclercq-Dransart, J.; Lemière, Sébastien; Vandenbulcke, Franck; Nesslany, Fabrice; Platel, Anne; Devred, I.; Hayet, A.; Cuny, Damien; Deram, Annabelle

doi:10.1016/j.ecoenv.2018.10.010

Cited by 35 publications

(14 citation statements)

References 36 publications

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“…Moreover, the breakdown of reserved food material in endosperm through Cd may also result in retardation of plant growth [46]. Similarly, it was found that Cd and Pb toxicity reduced the root lengths and shoot lengths in Brassica olerace a and Trifolium repens respectively [47]. This reduction in the morphological attributes are because of higher accumulation of heavy metals in plant tissues that inhibited their growth [47].…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, it was found that Cd and Pb toxicity reduced the root lengths and shoot lengths in Brassica olerace a and Trifolium repens respectively [47]. This reduction in the morphological attributes are because of higher accumulation of heavy metals in plant tissues that inhibited their growth [47]. Another study revealed that Cd-mediated toxicity reduced the plant biomass in cucumber plants in terms of fresh and dry root and shoot biomass and leaf surface area of the plant [48].…”

Section: Discussionmentioning

confidence: 99%

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Microbial Fortification Improved Photosynthetic Efficiency and Secondary Metabolism in Lycopersicon esculentum Plants Under Cd Stress

et al. 2019

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Environmental stress including heavy metal pollution is increasing at high speed and is polluting the cultivable land. Consequently, it results in affecting human population through entering into food chain. The current study aims that Cd stress (0.4 mM) led to toxicity and deleterious effects on 45-day-old Lycopersicon esculentum plants. The use of rhizobacterial strains underlines the main hypothesis of the present research that have been exploited in order to alleviate the Cd induced stress in plants and promoting their growth sidewise. The morphological parameters, plant pigments, and gaseous exchange parameters were estimated and found to be reduced in plants due to Cd toxicity. Along with this, the levels of phenolic compounds and osmoprotectants were stimulated in plants raised in Cd spiked soils. In addition, free amino acid content was reduced in plants under Cd treatment. It was revealed that these bacterial strains Pseudomonas aeruginosa (M1) and Burkholderia gladioli (M2) when inoculated to tomato plants improved the morphological characteristics and enhanced photosynthetic attributes. Moreover, the level of phenolic compounds and osmoprotectants were further enhanced by both the inoculating agents independently. However, in situ localization studies of phenol accumulation in root sections was found to be enhanced in Cd treated plants as revealed through higher intensity of yellowish-brown colour. The supplementation of bacterial strains further accumulated the phenols in Cd stressed root sections as evidenced through increased colour intensity. Therefore, the present study suggested that bacterial strains mitigates Cd stress from tomato plants through improving morphological, physiological and metabolite profiles. Consequently, the present research advocates the best utilization of rhizobacteria as stress alleviators for sustainable agriculture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Microbial Fortification Improved Photosynthetic Efficiency and Secondary Metabolism in Lycopersicon esculentum Plants Under Cd Stress

et al. 2019

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“…Another well documented example of abiotic stress activating the plant DDR is the exposure to heavy metals [for example cadmium (Cd), copper (Cu), lead (Pb) or mercury (Hg) (Küpper and Andresen, 2016; Lanier et al, 2019)], or other metallic ions such as aluminum (Al). These metallic ions can be divided into two categories: some, like copper or zinc are essential for plant growth but toxic at high doses, while others such as cadmium, mercury, and lead are not required for plant development.…”

Section: Role Of the Plant Ddr In Abiotic Stress Responsesmentioning

confidence: 99%

The Plant DNA Damage Response: Signaling Pathways Leading to Growth Inhibition and Putative Role in Response to Stress Conditions

et al. 2019

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Maintenance of genome integrity is a key issue for all living organisms. Cells are constantly exposed to DNA damage due to replication or transcription, cellular metabolic activities leading to the production of Reactive Oxygen Species (ROS) or even exposure to DNA damaging agents such as UV light. However, genomes remain extremely stable, thanks to the permanent repair of DNA lesions. One key mechanism contributing to genome stability is the DNA Damage Response (DDR) that activates DNA repair pathways, and in the case of proliferating cells, stops cell division until DNA repair is complete. The signaling mechanisms of the DDR are quite well conserved between organisms including in plants where they have been investigated into detail over the past 20 years. In this review we summarize the acquired knowledge and recent advances regarding the DDR control of cell cycle progression. Studying the plant DDR is particularly interesting because of their mode of development and lifestyle. Indeed, plants develop largely post-embryonically, and form new organs through the activity of meristems in which cells retain the ability to proliferate. In addition, they are sessile organisms that are permanently exposed to adverse conditions that could potentially induce DNA damage in all cell types including meristems. In the second part of the review we discuss the recent findings connecting the plant DDR to responses to biotic and abiotic stresses.

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“…Whereas the alkaline comet assay (performed at pH > 13) detects both DNA single-stranded breaks (SSBs) and DSBs, only DSBs are detected through the neutral comet assay [78,79]. Taken together, the results obtained through this method suggest that Cd exposure induces DNA strand breaks in different plant species including V. faba [80,81,82], Nicotiana tabacum [83,84], Allium sativum [82], Solanum tuberosum [85], Allium cepa [80,86,87], Lemna minor [88,89], Lactuca sativa [86,90], H. vulgare [91], Brassica oleracea and Trifolium repens [92]. In S. tuberosum , the Cd-induced increase in percentage tail DNA was more pronounced in roots as compared to leaves and appeared later in the latter organ [85].…”

Section: Vegetative Plant Growthmentioning

confidence: 99%

Cadmium and Plant Development: An Agony from Seed to Seed

Huybrechts

Cuypers

Deckers

et al. 2019

IJMS

138

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Anthropogenic pollution of agricultural soils with cadmium (Cd) should receive adequate attention as Cd accumulation in crops endangers human health. When Cd is present in the soil, plants are exposed to it throughout their entire life cycle. As it is a non-essential element, no specific Cd uptake mechanisms are present. Therefore, Cd enters the plant through transporters for essential elements and consequently disturbs plant growth and development. In this review, we will focus on the effects of Cd on the most important events of a plant’s life cycle covering seed germination, the vegetative phase and the reproduction phase. Within the vegetative phase, the disturbance of the cell cycle by Cd is highlighted with special emphasis on endoreduplication, DNA damage and its relation to cell death. Furthermore, we will discuss the cell wall as an important structure in retaining Cd and the ability of plants to actively modify the cell wall to increase Cd tolerance. As Cd is known to affect concentrations of reactive oxygen species (ROS) and phytohormones, special emphasis is put on the involvement of these compounds in plant developmental processes. Lastly, possible future research areas are put forward and a general conclusion is drawn, revealing that Cd is agonizing for all stages of plant development.

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Combined toxic effects and DNA damage to two plant species exposed to binary metal mixtures (Cd/Pb)

Cited by 35 publications

References 36 publications

Microbial Fortification Improved Photosynthetic Efficiency and Secondary Metabolism in Lycopersicon esculentum Plants Under Cd Stress

Microbial Fortification Improved Photosynthetic Efficiency and Secondary Metabolism in Lycopersicon esculentum Plants Under Cd Stress

The Plant DNA Damage Response: Signaling Pathways Leading to Growth Inhibition and Putative Role in Response to Stress Conditions

Cadmium and Plant Development: An Agony from Seed to Seed

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