Differential patterns of reactive oxygen species and antioxidative mechanisms during atrazine injury and sucrose-induced tolerance in Arabidopsis thaliana plantlets

Ramel, Fanny; Sulmon, Cécile; Bogard, Matthieu; Couée, Ivan; Gouesbet, Gwenola

doi:10.1186/1471-2229-9-28

Cited by 282 publications

(189 citation statements)

References 83 publications

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“…However, a dual role in ROS homeostasis has still to be considered for soluble sugars as particularly sucrose, glucose, and fructose are involved in ROS generation as well as in antioxidant pathways (Couée et al, 2006); for example, sucrose is an important signal triggering defense responses against ROS (Ramel et al, 2007(Ramel et al, , 2009. In this respect, the conversion of sucrose into short chain inulin-type fructans may help shift the balance in the NP and ETCs toward protection against oxidative stress.…”

Section: The Direct Participation Of Oligosaccharides In Ros Detoxifimentioning

confidence: 99%

Spatio-Temporal Dynamics of Fructan Metabolism in Developing Barley Grains

et al. 2014

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Barley (Hordeum vulgare) grain development follows a series of defined morphological and physiological stages and depends on the supply of assimilates (mainly sucrose) from the mother plant. Here, spatio-temporal patterns of sugar distributions were investigated by mass spectrometric imaging, targeted metabolite analyses, and transcript profiling of microdissected grain tissues. Distinct spatio-temporal sugar balances were observed, which may relate to differentiation and grain filling processes. Notably, various types of oligofructans showed specific distribution patterns. Levan-and graminan-type oligofructans were synthesized in the cellularized endosperm prior to the commencement of starch biosynthesis, while during the storage phase, inulin-type oligofructans accumulated to a high concentration in and around the nascent endosperm cavity. In the shrunken endosperm mutant seg8, with a decreased sucrose flux toward the endosperm, fructan accumulation was impaired. The tight partitioning of oligofructan biosynthesis hints at distinct functions of the various fructan types in the young endosperm prior to starch accumulation and in the endosperm transfer cells that accomplish the assimilate supply toward the endosperm at the storage phase.

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Section: The Direct Participation Of Oligosaccharides In Ros Detoxifimentioning

confidence: 99%

Spatio-Temporal Dynamics of Fructan Metabolism in Developing Barley Grains

et al. 2014

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“…After three hours of reaction, plants were bleached in acetic acid-glycerol-ethanol (1/1/3) (v/v/v) solution at 100°C during 5 min. The precipitation of NBT with O2 .-present in plant tissues produces a blue color (Ramel et al, 2009). Plants were then stored in a glycerol-ethanol (1/4) (v/v) solution and photographed.…”

Section: Superoxide Radical Visualizationmentioning

confidence: 99%

The halophytic model plant Thellungiella salsuginea exhibited increased tolerance to phenanthrene-induced stress in comparison with the glycophitic one Arabidopsis thaliana: Application for phytoremediation

Shiri

Rabhi

Abdelly

et al. 2015

Ecological Engineering

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Polycyclic aromatic hydrocarbons constitute a large family of organic environmental pollutants. Hence, a particular attention has been attributed to all approaches involved in the reduction of their contamination in water and natural ecosystems. Plant tolerance, absorption, accumulation, and likely biodegradation of these pollutants, known as phytoremediation, have emerged as an efficient technique to remediate environments contaminated with polycyclic aromatic hydrocarbons. The present work was aimed to compare the tolerance to phenanthrene (a polycyclic aromatic hydrocarbon) in the two model plants: Arabidopsis thaliana (glycophyte) and Thellungiella salsuginea (halophyte). Our study showed that the development of these two species was reduced under phenanthrene stress, the effect being more pronounced in Arabidopsis thaliana than in Thellungiella salsuginea. In parallel, results from the intrinsic quantum yield of photosystem II and chlorophyll concentrations were concomitant with those of growth and phenotypic changes, and confirmed the higher tolerance of Thellungiella salsuginea compared to that of Arabidopsis thaliana. The intrinsic quantum yield of photosystem II was drastically decreased in the glycophyte, which indicates a marked disturbance in photosystem II performance. This induced a severe oxidative stress as shown by the utilization of specific reactive oxygen species probes. In parallel, the activities of glutathione reductase, gaiacol peroxidase, and superoxide dismutase were increased by 95, 73, and 36%, respectively, which indicates a marked phenanthrene-induced oxidative stress. In Thellungiella salsuginea, photosystem II performance was not significantly affected. This species showed less accumulated reactive oxygen species than Arabidopsis thaliana. Its enzymatic antioxidant system showed few changes as superoxide dismutase was the only enzyme whose activity was enhanced (+34%). A 3 much higher capacity of recovery was also noticed in this halophyte as compared to the glycophyte. Indeed, it seems that Thellungiella salsuginea accumulated phenanthrene in stomata, which suggests its possible volatilization. All these data, taken together, add new insight to the mechanisms involved in halophytic plant tolerance to abiotic stresses and their potential use in phytoremediation. Graphical abstract Phenanthrene Glycophytic

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“…Present investigations suggest that AP treatment trends to reduce the atrazine -induced toxicity from studies. In addition, atrazine treatment also increased hydrogen peroxide content, while reducing gene expression and enzymatic activities related to two major hydrogen peroxide-detoxification pathways (Ramel et al, 2009). …”

Section: Discussionmentioning

confidence: 99%

Effect of Antioxidant status on liver following Atrazine exposure and its protection by Andrographis paniculata

Shirisha¹

2013

IOSR-JPBS

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Abstract:The efficacy of Andrographis paniculata (AP) extract was studied on atrazine induced hepatic damage in rats. Ethanolic extract of AP (150mg/kg body weight) was found to protect the male wistar rats from hepato toxic action of atrazine as evidence by significant reduction in the level of lipid peroxidation and increased the antioxidant defense system activity in the atrazine intoxicated rats. However, AP treatment ameliorated the effects of atrazine suggesting it as potential antioxidant against atrazine induced oxidative stress.

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Differential patterns of reactive oxygen species and antioxidative mechanisms during atrazine injury and sucrose-induced tolerance in Arabidopsis thaliana plantlets

Cited by 282 publications

References 83 publications

Spatio-Temporal Dynamics of Fructan Metabolism in Developing Barley Grains

Spatio-Temporal Dynamics of Fructan Metabolism in Developing Barley Grains

The halophytic model plant Thellungiella salsuginea exhibited increased tolerance to phenanthrene-induced stress in comparison with the glycophitic one Arabidopsis thaliana: Application for phytoremediation

Effect of Antioxidant status on liver following Atrazine exposure and its protection by Andrographis paniculata

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