Effects of exogenous salicylic acid on manganese toxicity, element contents and antioxidative system in cucumber

Shi, Qinghua; Zhu, Zhujun

doi:10.1016/j.envexpbot.2007.11.003

Cited by 234 publications

(127 citation statements)

References 78 publications

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“…An important observation result of in the present study was that in both the cultivars, which showed significant decrease in As translocation in plants receiving As(V) by pretreatment with H 2 O 2 for 48 h. This is in agreement with the earlier studies where plants with exogenous application of H 2 O 2 or SA have ameliorated Cd toxicity (Guo et al 2007(Guo et al , 2009), where they have attributed this to SA-induced H 2 O 2 signaling in mediating Cd tolerance. Several studies have supported a major role of SA in modulating plant responses to abiotic stresses including heavy metal toxicity (Guo et al 2007;Janda et al 2012;Shi and Zhu 2008). The higher As level in the leaves of sensitive cultivar and the reverse in tolerant cultivar can be explained in the light of leaf GSH level.…”

Section: Discussionmentioning

confidence: 97%

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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Section: Discussionmentioning

confidence: 97%

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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“…Ferulic acid upregulated APX activity in the roots and shoots of wheat seedlings. In contrast to this, Shi and Zhu (2008) found decreased APX activity on application of SA in cucumber plants. Glutathione reductase (Chen et al 2011).…”

Section: Influence Of Fa Pre-treatment On Antioxidative Enzymes and Hmentioning

confidence: 49%

Ferulic acid: A novel inducer of antioxidant enzymes in wheat (Triticum aestivumL.) seedlings

Sharma

Bhardwaj

Gupta

2015

Cereal Research Communications

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The present study reports the effects of pre-treatment with ferulic acid (FA) on antioxidant response of wheat seedlings. In comparison to hydropriming, 100 and 150 ppm of FA significantly enhanced seedling growth of wheat at 6th day after germination (DAG). However, 1000 ppm of FA led to reduction in seedling growth. Roots and shoots of wheat seedlings pre-treated with 100 ppm of FA showed significant upregulation of peroxidase (POX), ascorbate peroxidase (APX) activities. Although catalase (CAT) remained unaffected in the roots, but showed about 2-fold increase in the shoots. Despite of low glutathione reductase (GR) and high polyphenol oxidase (PPO) activities in the shoots and roots, respectively, ascorbic acid and total phenolic contents also increased at 6th DAG which may be due to the activation of their biosynthetic pathways in seedlings pre-treated with 100 ppm of FA. Proline content of wheat seedlings pre-treated with 100 ppm of FA remained unaffected. Results signify the role of FA pre-treatment in augmenting the antioxidant response of wheat and thereby suggest that at lower concentrations, it can be used for improving performance of wheat under various environmental constraints.

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“…During the last years, SA has been intensively studied as a signal molecule mediating local and systemic defense responses against pathogens. Currently, it has been reported that this compound plays also a role in plants responses to abiotic stresses, such as drought, low and high temperatures, heavy metals, and osmotic stress (Janda et al, 1999;Rao and Davis 1999;Molina et al, 2002, Nemeth et al, 2002Munne-Bosch and Peñuelas 2003;Shi et al, 2008;Rivas-San Vicente and Plasencia 2011). SA was also shown to influence a number of physiological processes, including seed germination, seedling growth, fruit ripening, flowering, ion uptake and transport, photosynthesis rate, stomata conductance, biogenesis of chloroplast (Fariduddin et al, 2003;Khodary 2004;Hayat et al, 2005;Shakirova 2007).…”

Section: Salicylic Acid (Sa)mentioning

confidence: 99%

Drought Tolerance and Stress Hormones: From Model Organisms to Forage Crops

Aimar¹,

Calafat²,

Andrade³

et al. 2011

Plants and Environment

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Effects of exogenous salicylic acid on manganese toxicity, element contents and antioxidative system in cucumber

Cited by 234 publications

References 78 publications

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

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

Ferulic acid: A novel inducer of antioxidant enzymes in wheat (Triticum aestivumL.) seedlings

Drought Tolerance and Stress Hormones: From Model Organisms to Forage Crops

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