Endogenous salicylic acid potentiates cadmium-induced oxidative stress in Arabidopsis thaliana

Zawoznik, Myriam Sara; Groppa, María Daniela; Tomaro, Marı́a L.; Benavides, María Patricia

doi:10.1016/j.plantsci.2007.05.004

Cited by 110 publications

(79 citation statements)

References 47 publications

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“…However, the results are often contradictory and the exact role of SA is still unclear. In rice, a plant with very high SA content, SA pre-treatment resulted in a higher SA level and provided protection against Cd toxicity, which was mediated Cd-induced oxidative damage [22]. Previous results showed that Cd also increased the levels of SA precursors, BA and oHCA in maize, and that these changes were correlated with the Cd concentration [9].…”

Section: Discussionmentioning

confidence: 99%

Synthesis and role of salicylic acid in wheat varieties with different levels of cadmium tolerance

Kovács

Gondor

Szalai

et al. 2014

Journal of Hazardous Materials

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Wheat genotypes with different endogenous SA contents were investigated, in order to reveal how cadmium influences salicylic acid (SA) synthesis, and to find possible relationships between SA and certain protective compounds (members of the antioxidants and the heavy metal detoxification system) and between the SA content and the level of cadmium tolerance.Cadmium exposure induced SA synthesis, especially in the leaves, and it is suggested that the phenyl-propanoid synthesis pathway is responsible for the accumulation of SA observed after cadmium stress. Cadmium influenced the synthesis and activation of protective compounds to varying extents in wheat genotypes with different levels of tolerance; the roots and leaves also responded differently to cadmium stress. Although a direct relationship was not found between the initial SA levels and the degree of cadmium tolerance, the results suggest that the increase in the root SA level during cadmium stress in the Mv varieties could be related with the enhancement of the internal glutathione cycle, thus inducing the antioxidant and metal detoxification systems, which promote Cd stress tolerance in wheat seedlings. The positive correlation between certain SA-related compounds and protective compounds suggests that SA-related signalling may also play a role in the acclimation to heavy metal stress.

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Section: Discussionmentioning

confidence: 99%

Synthesis and role of salicylic acid in wheat varieties with different levels of cadmium tolerance

Kovács

Gondor

Szalai

et al. 2014

Journal of Hazardous Materials

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“…In plants, SGs and P-bodies are known to be formed under various stressful conditions including heat, oxidative stress, UV irradiation, and translation inhibition. 18 We speculated that the VOZ2 foci formed under the heat stress conditions were associated with SGs or P-bodies. To confirm that VOZ2 colocalizes with PABP8 and DCP1, 14 marker proteins of SGs and P-bodies, respectively, we generated transgenic Arabidopsis plants expressing both tagRFP-PABP8 or tagRFP-DCP1 and GFP-VOZ2 under the control of the CaMV35S promoter.…”

Section: Voz2 Is Associated With Sgs Under the High-temperature Condimentioning

confidence: 99%

Vascular plant one-zinc-finger protein 2 is localized both to the nucleus and stress granules under heat stress in Arabidopsis

Koguchi

Yamasaki

Hirano

et al. 2017

Plant Signaling & Behavior

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VASCULAR PLANT ONE-ZINC FINGER (VOZ)1/and VOZ2 have an ability to bind to the specific cis-element in the AVP1 promoter of Arabidopsis, which function on the PhyB-dependent flowering and possibly in various stress responses as potential transcription factors, although nuclear localization of VOZ proteins is still unclear. In this study, we found that VOZ2 is dispersed throughout the cytoplasm under normal growth conditions, whereas VOZ2 is transferred not only to the nucleus but also to the cytoplasmic foci under heat stress conditions. The VOZ2 foci predominantly co-localized with a marker of stress granules (SGs), which were cytoplasmic granular structures for mRNA storage and decay under abiotic stress conditions. We also demonstrated that GFP-VOZ2 with a nuclear localization signal was rapidly degraded via the ubiquitin/proteasome pathway under the heat stress conditions. Also, stress-related expression of DREB2A in the voz1voz2 mutant was significantly upregulated by heat stress as compared with that in the wild-type Arabidopsis. Our results suggest that VOZ2 is localized to SGs and nucleus under heat stress conditions, and functions as a transcriptional repressor of DREB2A in Arabidopsis.

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“…This is reported to increase chilling tolerance (Murphy et al 2002), salt tolerance (Wahid et al 2007), tolerance to osmotic stress (Liu et al 2010), and low light (Zhang et al 2011). Alleviation of heavy metals induced oxidative stress have also been demonstrated during Cd treatment in rice, barley, maize, pea seedlings, Arabidopsis thaliana and Glycine max (Pal et al 2002;Metwally et al 2003;Choudhury and Panda 2004;Drazic and Mihailovic 2005;Noriega et al 2012;Guo et al 2007;Zawoznik et al 2007;Popova et al 2009;Xiao-Juan et al 2010). Reduction of Pb and Hg induced membrane damage in Oryza sativa have been studied by pretreatment with SA (Mishra and Choudhuri 1999), pre-treatement of a rice cultivar with H 2 O 2 has been reported to increase its tolerance towards Cd toxicity by increasing GSH, phytochelatins and nonprotein thiols (Chou et al 2012).…”

Section: Introductionmentioning

confidence: 99%

H2O2 pretreated rice seedlings specifically reduces arsenate not arsenite: difference in nutrient uptake and antioxidant defense response in a contrasting pair of rice cultivars

Mallick

Kumar

Sinha

et al. 2014

Physiol Mol Biol Plants

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The study investigated the reduction in metalloid uptake at equimolar concentrations (~53.3 μM) of As(III) and As(V) in contrasting pair of rice seedlings by pretreating with H 2 O 2 (1.0 μM) and SA (1.0 mM). Results obtained from the contrasting pair (arsenic tolerant vs. sensitive) of rice seedlings (cv. Pant Dhan 11 and MTU 7029, respectively) shows that pretreatment of H 2 O 2 and H 2 O 2 + SA reduces As(V) uptake significantly in both the cultivars, while no reduction in the As(III) uptake. The higher growth inhibition, higher H 2 O 2 and TBARS content in sensitive cultivar against As(III) and As(V) treatments along with higher As accumulation (~1.2 mg g −1 dw) than in cv. P11, unravels the fundamental difference in the response between the sensitive and tolerant cultivar. In the H 2 O 2 pretreated plants, the translocation of As increased in tolerant cultivar against AsIII, whereas, it decreased in sensitive cultivar both against AsIII and AsV. In both the cultivars translocation of Mn increased in the H 2 O 2 pretreated plants against As(III), whereas, the translocation of Cu increased against As(V). In tolerant cultivar the translocation of Fe increased against As(V) with H 2 O 2 pretreatment whereas, it decreased in the sensitive cultivar. In both the cultivars, Zn translocation increased against As(III) and decreased against As(V). The higher level of H 2 O 2 and SOD (EC 1.15.1.1) activity in sensitive cultivar whereas, higher, APX (EC 1.11.1.11), GR (EC 1.6.4.2) and GST (EC 1.6.4.2) activity in tolerant cultivar, also demonstrated the differential anti-oxidative defence responses between the contrasting rice cultivars.

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Endogenous salicylic acid potentiates cadmium-induced oxidative stress in Arabidopsis thaliana

Cited by 110 publications

References 47 publications

Synthesis and role of salicylic acid in wheat varieties with different levels of cadmium tolerance

Synthesis and role of salicylic acid in wheat varieties with different levels of cadmium tolerance

Vascular plant one-zinc-finger protein 2 is localized both to the nucleus and stress granules under heat stress in Arabidopsis

H2O2 pretreated rice seedlings specifically reduces arsenate not arsenite: difference in nutrient uptake and antioxidant defense response in a contrasting pair of rice cultivars

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