Salicylic Acid-Mediated Alleviation of Cadmium Toxicity in Maize Leaves

Al-Mureish, Khalid

doi:10.11648/j.jps.20140206.13

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…MDA is used as an index of lipid peroxidation, which reflects membrane injury (Zhang et al 2014). The accumulation of H2O2 resulted in lipid peroxidation, which causes membrane damage (Al-Mureish et al 2014). Melatonin treatment effectively inhibits the accumulation of H2O2 and MDA in cucumber seedlings under salinity stress (Wang et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Exogenous melatonin ameliorates salinity-induced oxidative stress and improves photosynthetic capacity in sweet corn seedlings

Wang¹,

Wang²,

Shi³

et al. 2021

Photosynt.

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Melatonin (MT) is involved in physiological processes in plants under abiotic stress. In this study, we investigated the effects of melatonin on maize photosynthetic and antioxidant capacities under salinity stress. Our findings indicated salinity stress significantly inhibited maize growth. However, exogenous MT promoted maize growth and antioxidant capacity. Superoxide dismutase, peroxidase, and catalase increased by 138.8, 38.7, and 32.0%, respectively, while H2O2 and malondialdehyde decreased by 23 and 31%, respectively. Exogenous MT also improved maize photosynthesis under salinity stress. Net photosynthetic rate, transpiration rate, and stomatal conductance increased by 134, 67.2, and 46.3%, respectively. Maximum quantum yield of PSII photochemistry, effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and electron transport rate increased by 5.8, 70.4, 65.3, and 41.0%, respectively. Therefore, our findings suggested exogenous MT significantly ameliorated maize physiological and photosynthetic adaptation under salinity stress, thereby providing helpful guidance for maize cultivation in areas of high salinity. Highlights • Exogenous melatonin (MT) mediated physiological and photosynthetic adaptation in sweet corn • Exogenous MT maintained the balance of ROS metabolism under salinity stress • Exogenous MT ameliorated salinity-induced damages of sweet corn seedlings et al. 2020). Several studies have reported a significant decline in growth and biomass yield of plants under salinity stress (Ahanger et al. 2018, Alam et al. 2019). The effects of salinity stress on photosynthesis have several outcomes. A decrease in stomatal conductance leads to a decrease in carbon dioxide assimilation. Moreover, salinity stress is associated with a decrease in chlorophyll (Chl) content,

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Section: Discussionmentioning

confidence: 99%

Exogenous melatonin ameliorates salinity-induced oxidative stress and improves photosynthetic capacity in sweet corn seedlings

Wang¹,

Wang²,

Shi³

et al. 2021

Photosynt.

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“…Together, upon the combination of metals, the antioxidants activities were somehow similar to the individual metals. Metal stress has been reported to alter the activity of Peroxidase (POD), Superoxide dismutase (SOD), and Catalase (CAT) antioxidant enzymes [39,40]. We then investigated whether the combinations of Zn, Pb, and Cd interfere with the POD, SOD, and CAT levels ( Figure 2).…”

Section: Antioxidant Activity Is Altered In Response To Zn Pb and Cmentioning

confidence: 99%

The Interplay between Toxic and Essential Metals for Their Uptake and Translocation Is Likely Governed by DNA Methylation and Histone Deacetylation in Maize

Shafiq

Ali

Sajjad

et al. 2020

IJMS

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The persistent nature of lead (Pb) and cadmium (Cd) in the environment severely affects plant growth and yield. Conversely, plants acquire zinc (Zn) from the soil for their vital physiological and biochemical functions. However, the interplay and coordination between essential and toxic metals for their uptake and translocation and the putative underlying epigenetic mechanisms have not yet been investigated in maize. Here, we report that the presence of Zn facilitates the accumulation and transport of Pb and Cd in the aerial parts of the maize plants. Moreover, the Zn, Pb, and Cd interplay specifically interferes with the uptake and translocation of other divalent metals, such as calcium and magnesium. Zn, Pb, and Cd, individually and in combinations, differentially regulate the expression of DNA methyltransferases, thus alter the DNA methylation levels at the promoter of Zinc-regulated transporters, Iron-regulated transporter-like Protein (ZIP) genes to regulate their expression. Furthermore, the expression of histone deacetylases (HDACs) varies greatly in response to individual and combined metals, and HDACs expression showed a negative correlation with ZIP transporters. Our study highlights the implication of DNA methylation and histone acetylation in regulating the metal stress tolerance dynamics through Zn transporters and warns against the excessive use of Zn fertilizers in metal contaminated soils.

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Use of Maize (Zea mays L.) for phytomanagement of Cd-contaminated soils: a critical review

Rizwan

Ali

Qayyum

et al. 2016

Environ Geochem Health

137

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Maize (Zea mays L.) has been widely adopted for phytomanagement of cadmium (Cd)-contaminated soils due to its high biomass production and Cd accumulation capacity. This paper reviewed the toxic effects of Cd and its management by maize plants. Maize could tolerate a certain level of Cd in soil while higher Cd stress can decrease seed germination, mineral nutrition, photosynthesis and growth/yields. Toxicity response of maize to Cd varies with cultivar/varieties, growth medium and stress duration/extent. Exogenous application of organic and inorganic amendments has been used for enhancing Cd tolerance of maize. The selection of Cd-tolerant maize cultivar, crop rotation, soil type, and exogenous application of microbes is a representative agronomic practice to enhance Cd tolerance in maize. Proper selection of cultivar and agronomic practices combined with amendments might be successful for the remediation of Cd-contaminated soils with maize. However, there might be the risk of food chain contamination by maize grains obtained from the Cd-contaminated soils. Thus, maize cultivation could be an option for the management of low- and medium-grade Cd-contaminated soils if grain yield is required. On the other hand, maize can be grown on Cd-polluted soils only if biomass is required for energy production purposes. Long-term field trials are required, including risks and benefit analysis for various management strategies aiming Cd phytomanagement with maize.

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Salicylic Acid-Mediated Alleviation of Cadmium Toxicity in Maize Leaves

Cited by 8 publications

References 29 publications

Exogenous melatonin ameliorates salinity-induced oxidative stress and improves photosynthetic capacity in sweet corn seedlings

Exogenous melatonin ameliorates salinity-induced oxidative stress and improves photosynthetic capacity in sweet corn seedlings

The Interplay between Toxic and Essential Metals for Their Uptake and Translocation Is Likely Governed by DNA Methylation and Histone Deacetylation in Maize

Use of Maize (Zea mays L.) for phytomanagement of Cd-contaminated soils: a critical review

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