Effect of salicylic acid pretreatment on cadmium toxicity in wheat

Moussa, Helal Ragab; El-Gamal, S. M.

doi:10.1007/s10535-010-0054-7

Cited by 97 publications

(42 citation statements)

References 44 publications

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“…1e, f). This finding is in agreement with the observations of Moussa and El-Gamal (2010) in wheat. The improvement in chloroplast structure might provide the primary explanation for the increase in the photosynthesis rate after SA pretreatment and the absence of a significant effect on Gs and E compared with 500 lM Cd treatment (Table 2).…”

Section: Resultssupporting

confidence: 94%

“…In plant cells, the vacuoles are involved in the sequestration of Cd and, consequently, in Cd-induced tolerance (Sanitá di Toppi and Gabbrielli 1999). The occurrence of electron-dense deposits in the vacuoles and appearance of small vesicles in the cytoplasm appeared to be common features of metal-stressed plants and suggested a mechanism of heavy metal detoxification in plants (Moussa and El-Gamal 2010). Our study confirmed that the root tip cells of I. hexagona seedlings possessed small vacuoles with high electron density granules.…”

Section: Resultssupporting

confidence: 79%

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Cadmium Toxicity and Alleviating Effects of Exogenous Salicylic Acid in Iris hexagona

Han

Gang

Chen

et al. 2015

Bull Environ Contam Toxicol

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Cadmium (Cd) toxictity and possible role of salicylic acid (SA) in alleviating Cd-induced toxicity were investigated on ornamental hydrophyte Iris hexagona. Compared to the control, treatments with 100 and 500 µM Cd for 7 days significantly decreased dry weight, the contents of chlorophyll, photosynthetic parameters, and increased the content of thiobarbituric acid reactive substance. Pretreatment of the roots of I. hexagona seedlings with 1 µM SA before Cd exposure may increase dry weight, photosynthetic rate, activities of antioxidant enzymes, improve the cell ultrastructure and protect plants from Cd-induced oxidative stress damage. However, SA pretreatment had no significant effect on Cd concentrations in the leaves and roots. It is suggested that SA-induced Cd tolerances in I. hexagona are likely associated with increases in antioxidant enzyme activities and vacuolar compartmentation, rather than Cd uptake.

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Section: Resultssupporting

confidence: 94%

Section: Resultssupporting

confidence: 79%

Cadmium Toxicity and Alleviating Effects of Exogenous Salicylic Acid in Iris hexagona

Han

Gang

Chen

et al. 2015

Bull Environ Contam Toxicol

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“…In fact, Cd has remarkable effect reducing the growth of non-tolerant plants (Benavides et al, 2005;Gratão et al, 2005). In addition, this metal can constrain the root biomass allocation (Moussa and El-Gamal, 2010) as well as the leaf elongation and shoot biomass (Ye et al, 1997). Hadad et al (2010) reported that Typha domingensis showed no growth modification under the contamination of Cr, Ni and Zn.…”

Section: Discussionmentioning

confidence: 99%

Cadmium tolerance of Typha domingensis Pers. (Typhaceae) as related to growth and leaf morphophysiology

et al. 2017

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Typha domingensis (cattail) is a native macrophyte known by its capacity to tolerate several heavy metals effects and the potential use for phytoremediation. However, in despite that cadmium (Cd) is one of the most toxic pollutants; its effects in T. domingensis biology remain uninvestigated. Thus, the objective of this study was to study the tolerance of T. domingensis to cadmium contamination by evaluating its growth, Cd uptake, leaf anatomy and gas exchange. The experiment was designed using three cadmium concentrations (0, 10 and 50 µM) and ten replicates for 90 days. The cadmium uptake, growth, gas exchange, chlorophyll content and leaf anatomy were evaluated. Data was submitted to ANOVA and Scott-Knott test for P<0.05. Typha domingensis accumulates Cd proportionally to its concentration on the solution and the content of this metal was higher in roots as compared to shoots. Plants showed no significant modifications on growth parameters such as the biomass production, number of leaves, number of clones and the biomass allocation to organs. The photosynthesis, transpiration and chlorophyll content were not modified by Cd. Most anatomical traits evaluated were not modified by the metal but the stomatal density and the proportion of vascular tissues were reduced under 50 µM of Cd. In despite, the leaf anatomy showed no toxicity evidences for any Cd level. The absence of growth reduction and the stability of anatomical and physiological traits give insight about the Cd tolerance of this species. Therefore, T. domingensis is able to overcome Cd toxicity and shows potential for phytoremediation. Keywords

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“…SA plays an important role in plant disease resistance (Klessig and Malamy 1994;Popova et al 1997) and now widely accepted as a major signal transducer or messenger for biotic stress (Klessig and Malamy 1994;Ganesan and Thomas 2001). More recent studies reported that the externally applied SA increased plant's tolerance to several abiotic stresses, including osmotic stress (Singh and Usha 2003;Al-Hakimi 2006), drought (Azooz and Youssef 2010), salinity (Shakirova et al 2003;Gunes et al 2007), and heavy metal stress Moussa and El-Gamel 2010). These studies suggest that SA may enhance the multiple types of stress tolerance in plants through which interactive effects on several functional molecules or other signaling molecules participating in more complex stress responses.…”

Section: Introductionmentioning

confidence: 99%

Changes in the water status and osmotic solute contents in response to drought and salicylic acid treatments in four different cultivars of wheat (Triticum aestivum)

et al. 2011

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Salicylic acid (SA) controls growth and stress responses in plants. It also induces drought tolerance in plants. In this paper, four wheat (Triticum aestivum L.) cultivars with different drought responses were treated with SA in three levels of drain (90, 60, 30% of maximum field capacity) to examine its interactive effects on drought responses and contents of osmotic solutes that may be involved in growth and osmotic adjustment. Under drought condition, the cultivars Geza 164 and Sakha 69 had the plant biomass and leaf relative water content (LRWC) greater than the cultivars Gemaza 1 and Gemaza 3. In all cultivars, drought stress decreased the biomass, LRWC, and the contents of inorganic solutes (Ca, K, Mg) and largely increased the contents of organic solutes (soluble sugars and proline). By contrast, SA increased the biomass, LRWC and the inorganic and organic solute contents, except proline. Correlation analysis revealed that the LRWC correlated positively with the inorganic solute contents but negatively with proline in all cultivars. SA caused maximum accumulations of soluble sugars in roots under drought. These results indicated that SA-enhanced tolerance might involve solute accumulations but independently of proline biosynthesis. Drought-sensitive cultivars had a trait lowering Ca and K levels especially in shoots. Possible functions of the ions and different traits of cultivars were discussed.

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Effect of salicylic acid pretreatment on cadmium toxicity in wheat

Cited by 97 publications

References 44 publications

Cadmium Toxicity and Alleviating Effects of Exogenous Salicylic Acid in Iris hexagona

Cadmium Toxicity and Alleviating Effects of Exogenous Salicylic Acid in Iris hexagona

Cadmium tolerance of Typha domingensis Pers. (Typhaceae) as related to growth and leaf morphophysiology

Changes in the water status and osmotic solute contents in response to drought and salicylic acid treatments in four different cultivars of wheat (Triticum aestivum)

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