Roles of some nitrogenous compounds protectors in the resistance to zinc toxicity in Lactuca sativa cv. Phillipus and Brassica oleracea cv. Bronco

Paradisone, Valeria; Barrameda-Medina, Yurena; Montesinos-Pereira, D.; Romero, Luís; Esposito, Sergio; Ruiz, Juan M.

doi:10.1007/s11738-015-1893-9

Cited by 25 publications

(18 citation statements)

References 43 publications

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“…The cabbage genotypes studied appeared to have very different critical shoot Zn concentrations, ranging from 0.074 mg Zn g −1 DW for Red Drumhead to 1.201 mg Zn g −1 DW for Tundra (Table 1; Figure 1). These data are consistent with previous studies indicating that the critical shoot Zn concentration of cabbage approximates 0.05-0.40 mg Zn g −1 DW [35,40,42,43] and that cabbage genotypes differ in their critical shoot Zn concentration [44]. Differences in critical shoot Zn concentration appeared to be less pronounced among the broccoli genotypes studied, although Waltham 29 appeared more sensitive and Belstar less sensitive than the other genotypes to increasing shoot Zn concentration (Table 1; Figure 4).…”

Section: Discussionsupporting

confidence: 91%

Limits to the Biofortification of Leafy Brassicas with Zinc

et al. 2018

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Many humans lack sufficient zinc (Zn) in their diet for their wellbeing and increasing Zn concentrations in edible produce (biofortification) can mitigate this. Recent efforts have focused on biofortifying staple crops. However, greater Zn concentrations can be achieved in leafy vegetables than in fruits, seeds, or tubers. Brassicas, such as cabbage and broccoli, are widely consumed and might provide an additional means to increase dietary Zn intake. Zinc concentrations in brassicas are limited primarily by Zn phytotoxicity. To assess the limits of Zn biofortification of brassicas, the Zn concentration in a peat:sand (v/v 75:25) medium was manipulated to examine the relationship between shoot Zn concentration and shoot dry weight (DW) and thereby determine the critical shoot Zn concentrations, defined as the shoot Zn concentration at which yield is reduced below 90%. The critical shoot Zn concentration was regarded as the commercial limit to Zn biofortification. Experiments were undertaken over six successive years. A linear relationship between Zn fertiliser application and shoot Zn concentration was observed at low application rates. Critical shoot Zn concentrations ranged from 0.074 to 1.201 mg Zn g −1 DW among cabbage genotypes studied in 2014, and between 0.117 and 1.666 mg Zn g −1 DW among broccoli genotypes studied in 2015-2017. It is concluded that if 5% of the dietary Zn intake of a population is currently delivered through brassicas, then the biofortification of brassicas from 0.057 to > 0.100 mg Zn g −1 DW through the application of Zn fertilisers could increase dietary Zn intake substantially.

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Section: Discussionsupporting

confidence: 91%

Limits to the Biofortification of Leafy Brassicas with Zinc

et al. 2018

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“…under high temperature stress. GABA biosynthesis is enhanced via various stress conditions (Bor et al, 2009; Al-Quraan et al, 2011; Paradisone et al, 2015), and GABA pathway could regulate the adaptation mechanisms (Al-Quraan and Al-Share, 2016). GABA is synthesized from glutamate by the activity of cytosolic GAD (Bouche et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Gamma-Amino Butyric Acid Metabolism Under High Temperature Stress in Two Lichen Species

Çekiç¹,

Goren-Saglam²,

Torun³

et al. 2018

Appl. Ecol. Env. Res.

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High temperature stress is a major environmental stress factor for all photosynthetic organisms. Some lichen species could have the ability of tolerance against global warming. In the present study, we investigated the effects of high temperature on GABA metabolism in two different lichen species Evernia prunastri and Usnea sp.. Evernia and Usnea sp. were collected from unpolluted locations in Bilecik, TURKEY. Evernia and Usnea sp. were kept at 45 °C for 0, 24 and 48 h. We analyzed GABA content, glutamate dehydrogenase (GDH) and glutamate decarboxylase (GAD) activities and also chlorophyll and MDA contents in the thalli of the liche ns. The chlorophyll degradation and lipid peroxidation data indicated that E. prunastri thalli showed tolerance to high temperature while Usnea sp. thalli were found to be sensitive under these conditions. GABA content was enhanced by high temperature stress in E. prutastri thalli, while GAD and GDH activities were decreased. According to our results, we can suggest that GABA accumulation in lichen thalli could occur via different metabolic pathways.

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“…Root is the first organ feeling abiotic stresses in soil such as salinity and heavy metal contamination (Jiang et al, 2007 ), thus conditioning stress sensitivity and limiting plant biomass production (Steppuhn and Raney, 2005 ; Paradisone et al, 2015 ). Moreover, high Na concentrations in the soil or pore water may depress nutrient-ion activities and produce an extreme ratio of Na/K (Grattan and Grieve, 1999 ), whereas high zinc concentrations may induce deficiency of Mg and Fe because of the similar ion radius of Zn 2+ and Fe 2+ (Sagardoy et al, 2010 ), and Zn 2+ and Mg 2+ (Boardman and McGuire, 1990 ).…”

Section: Discussionmentioning

confidence: 99%

Zinc Excess Triggered Polyamines Accumulation in Lettuce Root Metabolome, As Compared to Osmotic Stress under High Salinity

et al. 2016

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Abiotic stresses such as salinity and metal contaminations are the major environmental stresses that adversely affect crop productivity worldwide. Crop responses and tolerance to abiotic stress are complex processes for which “-omic” approaches such as metabolomics is giving us a newest view of biological systems. The aim of the current research was to assess metabolic changes in lettuce (Lactuca sativa L.), by specifically probing the root metabolome of plants exposed to elevated isomolar concentrations of NaCl and ZnSO4. Most of the metabolites that were differentially accumulated in roots were identified for stress conditions, however the response was more intense in plants exposed to NaCl. Compounds identified in either NaCl or ZnSO4 conditions were: carbohydrates, phenolics, hormones, glucosinolates, and lipids. Our findings suggest that osmotic stress and the consequent redox imbalance play a major role in determining lettuce root metabolic response. In addition, it was identified that polyamines and polyamine conjugates were triggered as a specific response to ZnSO4. These findings help improve understanding of how plants cope with abiotic stresses. This information can be used to assist decision-making in breeding programs for improving crop tolerance to salinity and heavy metal contaminations.

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Roles of some nitrogenous compounds protectors in the resistance to zinc toxicity in Lactuca sativa cv. Phillipus and Brassica oleracea cv. Bronco

Cited by 25 publications

References 43 publications

Limits to the Biofortification of Leafy Brassicas with Zinc

Limits to the Biofortification of Leafy Brassicas with Zinc

Gamma-Amino Butyric Acid Metabolism Under High Temperature Stress in Two Lichen Species

Zinc Excess Triggered Polyamines Accumulation in Lettuce Root Metabolome, As Compared to Osmotic Stress under High Salinity

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