Ex-foliar applied extremolyte ectoine improves water management, photosystem, antioxidant system and redox homeostasis in Zea mays under cadmium toxicity

Photosynthesis has a high capacity for production of hydrogen peroxide (H 2 O 2 ), but the intracellular levels of this relatively weak oxidant are controlled by the antioxidant system, comprising a network of enzymatic and non-enzymatic components that notably includes reactions linked to the intracellular ascorbate and glutathione pools. Mutants and transformed plants with specific decreases in key components offer the opportunity to dissect the complex system that maintains redox homeostasis. Since H 2 O 2 is a signal-transducing molecule relaying information on intracellular redox state, the pool size must be rigorously controlled within each compartment of the cell. This review focuses on compartment-specific differences in the stringency of redox coupling between ascorbate and glutathione, and the significance this may have for the flexibility of the control of gene expression that is linked to photosynthetic H 2 O 2 production.

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Salicylic Acid and Sodium Salicylate Alleviate Cadmium Toxicity to Different Extents in Maize (Zea mays L.)

PLoS ONE ◽

10.1371/journal.pone.0160157 ◽

2016 ◽

Vol 11 (8) ◽

pp. e0160157 ◽

Cited By ~ 38

Author(s):

Orsolya Kinga Gondor ◽

Magda Pál ◽

Éva Darkó ◽

Tibor Janda ◽

Gabriella Szalai

Keyword(s):

Zea Mays ◽

Salicylic Acid ◽

Zea Mays L ◽

Sodium Salicylate ◽

Cadmium Toxicity

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Growth and development of maize (Zea mays L.) in response to different field water management practices: Resource capture and use efficiency

Agricultural and Forest Meteorology ◽

10.1016/j.agrformet.2010.02.003 ◽

2010 ◽

Vol 150 (4) ◽

pp. 606-613 ◽

Cited By ~ 113

Author(s):

Liu Yi ◽

Yang Shenjiao ◽

Li Shiqing ◽

Chen Xinping ◽

Chen Fang

Keyword(s):

Water Management ◽

Zea Mays ◽

Growth And Development ◽

Management Practices ◽

Zea Mays L ◽

Resource Capture ◽

Use Efficiency

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Responses of Wheat (Triticum Aestivum L.) and Maize (Zea Mays L.) Plants to Cadmium Toxicity in Relation to Magnesium Nutrition

Acta Botanica Croatica ◽

10.2478/botcro-2014-0014 ◽

2014 ◽

Vol 73 (2) ◽

pp. 359-373 ◽

Cited By ~ 5

Author(s):

Nataša Nikolić ◽

Slobodanka Pajević ◽

Milan Župunski ◽

Mirjana Topić ◽

Danijela Arsenov

Keyword(s):

Triticum Aestivum ◽

Zea Mays ◽

Considerable Increase ◽

Photosynthetic Activity ◽

Cadmium Toxicity ◽

Triticum Aestivum L ◽

Carotenoid Concentration ◽

Physiological Processes ◽

Leaf Chlorophyll ◽

Negative Effect

AbstractThe influence of cadmium (Cd) on physiological processes in wheat (Triticum aestivumL.) and maize (Zea maysL.) plants exposed to either optimal mineral nutrition or the absence of magnesium (Mg) as well as the accumulation of cadmium and magnesium in plant organs were studied using the method of water culture in a greenhouse. Cd treatment reduced shoot fresh mass more strongly in Mg-supplied than in Mg-deficient plants. Negative effect of Cd on photosynthetic activity was more pronounced inT. aestivumthan inZ. maysplants. Cd treatment decreased leaf chlorophyll and carotenoid concentration in bothZ. maysandT. aestivum,irrespective of the Mg supply. Cd was preferentially accumulated in the roots of both species. Catalase activity inT. aestivumleaves and roots was unaffected by Cd and Mg supply. Cd treatment did not affect Fe accumulation in the leaves of either species, while in the roots a considerable increase occurred, irrespective of the Mg nutrition. Higher tolerance ofZ. maysandT. aestivumplants to Cd toxicity exposed to Mg deficiency could partly be ascribed to the preservation of Fe nutrition.

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