Oxidative damages of maize seedlings caused by exposure to a combination of potassium deficiency and salt stress

Gong, Xiaolan; Liu, Chao; Zhou, Min; Hong, Mengmeng; Luo, Liting; Wang, Ling; Wang, Ying; Cai, Jingwei; Shouliang, Gong; Hong, Fashui

doi:10.1007/s11104-010-0616-7

Cited by 55 publications

(44 citation statements)

References 49 publications

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“…Reduced gas exchange, as a consequence of reduced stomatal conductance and decreased enzyme activities of bundle sheath cells, was responsible for reduced photosynthetic activity in maize under salinity stress (Omoto et al 2012). Gong et al (2011) also reported a reduction in both transpiration and net photosynthesis rates due to limited carbon dioxide uptake under salt stress.…”

Section: Light Harvesting and Carbon Fixationmentioning

confidence: 93%

“…Salt stress and potassium deficiency impaired the light reaction pathways of photosystems I and II in maize seedlings with a greater reduction in photosystem II than photosystem I (Qu et al 2012). Likewise, according to Gong et al (2011), the combination of salt stress and potassium deficiency impacted photosynthesis differently than each individual stress, enhancing oxidative damage and inhibiting maize growth.…”

Section: Light Harvesting and Carbon Fixationmentioning

confidence: 99%

“…Carbon fixation in maize is very sensitive to salt stress (Omoto et al 2012). Both stomatal and nonstomatal limitations and their combination are associated with salinity-induced reductions in maize photosynthesis (Gong et al 2011). Reduced stomatal conductance, impaired activities of carbon fixation enzymes, reduced photosynthetic pigments, and destruction of photosynthetic apparatus are among the key factors limiting carbon fixation capacity of maize plants under salt stress (Kaya et al 2010;Gong et al 2011;Omoto et al 2012;Qu et al 2012).…”

Section: Light Harvesting and Carbon Fixationmentioning

confidence: 99%

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Salt stress in maize: effects, resistance mechanisms, and management. A review

Farooq

Hussain

Wakeel

et al. 2015

Agron. Sustain. Dev.

534

363

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Maize is grown under a wide spectrum of soil and climatic conditions. Maize is moderately sensitive to salt stress; therefore, soil salinity is a serious threat to its production worldwide. Understanding maize response to salt stress and resistance mechanisms and overviewing management options may help to devise strategies for improved maize performance in saline environments. Here, we reviewed the effects, resistance mechanisms, and management of salt stress in maize. Our main conclusions are as follows: (1) germination and stand establishment are more sensitive to salt stress than later developmental stages. (2) High rhizosphere sodium and chloride decrease plant uptake of nitrogen, potassium, calcium, magnesium, and iron. (3) Reduced grain weight and number are responsible for low grain yield in maize under salt stress. Sink limitations and reduced acid invertase activity in developing grains is responsible for poor kernel setting under salt stress. (4) Exclusion of excessive sodium or its compartmentation into vacuoles is an important adaptive strategy for maize under salt stress. (5) Apoplastic acidification, required for cell wall extensibility, is an important indicator of salt resistance, but not essential for better maize growth under salt stress. (6) Upregulation of antioxidant defense genes and β-expansin proteins is important for salt resistance in maize. (7) Arbuscular mycorrhizal fungi improve salt resistance in maize due to better plant nutrient availability. (8) Seed priming is an effective approach for improving maize germination under salt stress. (9) Integration of screening, breeding and ion homeostasis mechanisms into a functional paradigm for the whole plant may help to enhance salt resistance in maize.

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Section: Light Harvesting and Carbon Fixationmentioning

confidence: 93%

Section: Light Harvesting and Carbon Fixationmentioning

confidence: 99%

Section: Light Harvesting and Carbon Fixationmentioning

confidence: 99%

See 1 more Smart Citation

Salt stress in maize: effects, resistance mechanisms, and management. A review

Farooq

Hussain

Wakeel

et al. 2015

Agron. Sustain. Dev.

534

363

View full text Add to dashboard Cite

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“…High pH and excessive Na + in sodic-alkaline soil medium result in serious K + deprivation in living plant cells (Liu et al, 2013). Several studies have reported that a combination of salinity and K + starvation had a greater effect on the growth and productivity of barley and maize (Degl ' Innocenti et al, 2009;Hafsi et al, 2010;Gong et al, 2011;Qu et al, 2012). This study showed that the lowest biomass production and chlorosis with Alkalinity+0 mM K treatment, which indicates that the absence of K + partially intensified the effect of alkalinity on reducing the growth of Swiss chard.…”

Section: Discussionmentioning

confidence: 54%

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Liu¹,

El‐Shemy²,

Saneoka³

2017

IJAB

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Potassium (K + ) plays a vital role for plant growth and therefore the amount of K + seems to be a key of plant development. Therefore, this study investigated whether the sodic-alkalinity tolerance of Swiss chard (Beta vulgaris L. subsp. cicla) could be increased, via greater water uptake, higher concentrations of mineral elements and higher antioxidant enzyme activities in sodic-alkaline stress conditions with K + supplementation. Forty seven day old uniform seedlings were pre-treated in hydroponic medium with or without K + for 7 days, and then treated in non-alkaline or alkaline conditions for 9 days. The absence of K + somewhat intensified the effect of alkalinity on reducing the growth of Swiss chard, the total dry weight (DW) was reduced by 34% in plants treated in sodic-alkaline conditions without K + when compared with plants with K + . Relative water content (RWC) of leaves was increased by 10% by K + supplementation in sodic-alkaline conditions. Additionally, the osmotic adjustment was retorted; the contents of K , and the activities of catalase, guaiacol peroxidase, and glutathione reductase were increased. On other hand, K + supplementation in sodic-alkaline conditions helped to maintain guaiacol peroxidase activity similar to that of control plants, and reduced malondialdehyde content when compared with plants treated in sodic-alkaline conditions without K + . In conclusion, the K + supplementation resulted in favorable changes in plants with higher micronutrient contents and a reduction of oxidative damage induced by sodicalkalinity in Swiss chard.

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“…However, salinity and alkalinity of biochar are negative characteristics for its use as growth media. It can inhibit growth, creating phytotoxic effects through low external water potentials, ion toxicity and ion imbalance (Gong et al, 2011). To test for salt stress, salad germination test is selected in this study where the biochar is mixed with an inert finesand medium; but where the germination of a salt-sensitive species (Lactuca sativa L.) is evaluated.…”

Section: Salad Germination Testmentioning

confidence: 99%

Phytotoxic Effects of Two Biochars Derived from Wood Chip and Sewage Sludge: Salt Stress and Toxic Compounds Tests

2017

May 17-18, 2017 Istanbul (Turkey)

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Oxidative damages of maize seedlings caused by exposure to a combination of potassium deficiency and salt stress

Abstract: Soil salinity results in nutrient imbalances and potassium deficiency.

Cited by 55 publications

References 49 publications

Salt stress in maize: effects, resistance mechanisms, and management. A review

Salt stress in maize: effects, resistance mechanisms, and management. A review

Beneficial Effects of Potassium on Growth, Water Relations, Mineral Accumulation and Oxidative Damage of Beta vulgaris in Sodic-alkaline Condition

Phytotoxic Effects of Two Biochars Derived from Wood Chip and Sewage Sludge: Salt Stress and Toxic Compounds Tests

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