Saturation and Utilization of Nitrate Pools in Pea and Sugar Beet Leaves

Измайлов, С. Ф.

doi:10.1023/b:rupp.0000019212.20774.c7

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…To have a quality yield with low nitrate content is possible by manipulating the nitrogen nutrition of plants (Izmailov, 2004). Apart from nitrogen fertilization, a balanced nutrition of plants is particularly important in intensive agricultural production where high fertilizer applications are aimed at improving the yield and quality.…”

Section: Nutritional Factorsmentioning

confidence: 99%

“…The comparison of the nitrate storage pool with the nitrate concentration in the whole leaf (nitrate metabolic pool + nitrate storage pool) suggests that about 90% of the nitrate accumulates in the storage pool. Functional diversity of nitrate compartmentation in the cells of various species has been discussed by Izmailov (2004).…”

Section: Nitrate Distribution Within the Plantmentioning

confidence: 99%

See 1 more Smart Citation

Nitrate accumulation in plants, factors affecting the process, and human health implications. A review

Umar

Iqbal

2007

Agron. Sustain. Dev.

258

103

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Leafy vegetables occupy a very important place in the human diet, but unfortunately constitute a group of foods which contributes maximally to nitrate consumption by living beings. Under excessive application of nitrogen fertilizer, these vegetables can accumulate high levels of nitrate and, upon being consumed by living beings, pose serious health hazards. Therefore, efforts are warranted to minimize the accumulation of nitrate in leafy vegetables and its ingestion by human beings. This review focuses on (i) the contribution of vegetables towards dietary nitrate intake by humans, (ii) the nutritional, environmental and physiological factors affecting nitrate accumulation in plants, (iii) the harmful and beneficial effects of nitrate on human health, and (iv) the strategies that may be followed to minimize the nitrate content in plants and its subsequent consumption by human beings. The risk to human health due to nitrate consumption may be minimized by harvesting vegetables at noon, removal of organs rich in nitrate content and cooking of vegetables in water with a low nitrate content. The European Commission Regulation No. 1822/2005 needs to be followed in order to ensure safe levels of nitrate in plants for human consumption. nitrate toxicity / nitrate reductase / spinach / human health / leafy vegetables

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Section: Nutritional Factorsmentioning

confidence: 99%

Section: Nitrate Distribution Within the Plantmentioning

confidence: 99%

Nitrate accumulation in plants, factors affecting the process, and human health implications. A review

Umar

Iqbal

2007

Agron. Sustain. Dev.

258

103

View full text Add to dashboard Cite

show abstract

“…Specifying the nitrogen supply in solution with growth stages (McCall & Willumsen, 1999;Seginer, 2003) is another strategy reported in literatures. The use of nitrogen free solution before harvest has significant effect on nitrate content of leafy vegetables (Izmailov, 2004;Yan et al, 2014;Shohreh & Leila, 2015). Many authors have suggested that additions and partial replacing and balancing nitrate ions with chloride before crop maturity (Gunes et al, 2004;Pavlos et al, 2014) affects nitrate content.…”

Section: Introductionmentioning

confidence: 99%

Impact of Light Intensity and Nitrogen of Nutrient Solution on Nitrate Content in Three Lettuce Cultivars Prior to Harvest

Khan¹,

Yan²,

He³

2018

JAS

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Nitrate smoothly accumulates in leafy vegetables and poses serious health hazards if connected excessively in the human diet. The objective of this study was to improve the cultivation method of low nitrate lettuce grown in plant factory. A substantial decrease of nitrate content (NO3-) in three lettuce cultivars were subjected by short-term pre-harvest treatment combined with lowing nitrogen supply of nutrient solution to half concentration and high photosynthetic photon flux density (PPFD) by LED lighting. The lettuce (Lactuca sativa L. cv. Frill ice, Lvzhu, Ziwei) were hydroponically grown in full strength of nutrient solution based on Yamasaki formula up to harvest time within a controlled environment under two light sources using fluorescent lamps and LEDs. The results demonstrated that a subsequent 3-days treatment of additional PPFD from 250 µmol m-2 s-1 to 350 µmol m-2 s-1 from 18 days after transplanting and half concentrations of nitrogen (NO3--N) in nutrient solution which is composition to standard resulted in the decrease of nitrate content as compared to plants grown under initial PPFD and full concentration of NO3--Ncomposition. The gradual decrease in nitrate content was accompanied by an increased concentration of nutritionally carbohydrates. Another important indicator of nutritional quality such as vitamin C content exhibited some variation, fresh weight of cultivars in cv. Frill ice and Ziwei observed higher with fluorescent lamps and for cv. Lvzhu with LED treatment section followed by lowest nitrate content of fresh leaves, respectively. Further, presented results disclosed that to avoid high accumulation of nitrate in leafy vegetables, the strategy of lowering nitrogen supply and increasing light intensity prior to harvest benefiting growers and consumers by improving quality of the product also making it consumer friendly.

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“…This implies the rate-limiting role of NiR in foliar NO 2 assimilation. Moreover, metabolic and storage pools of NO 3 − in higher plants vary with species and physiological variables [20]. For…”

Section: Assimilation Into Amino Acidsmentioning

confidence: 99%

NO2-drived NO3– metabolism in leaves

Hu¹

2011

Insciences J.

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Atmospheric nitrogen dioxide (NO 2) can be dry/wet deposited into plant leaves mainly through stomata, with a small fraction of cuticle deposition. Plants in nature present a wide variation in NO 2 assimilation and the resistance. The ability of leaf NO 2 uptake and efficient remobilization of NO 2-derived NO 3-/NO 2 is important for normal plant growth and to withstand nitrogen deprivation. Moreover, leaf-and root-derived NO 3 metabolisms have both links and differences. This review emphasizes on the fates of NO 2-drived NO 3-, including i) the assimilation into amino acids, ii) accumulation in vacuoles, and iii) reemission by NO x (NO and/or NO 2), and discuss metabolic differences of NO 2-drived and root-derived NO 3 . Special attention is drawn to NO x evolution in apoplast and symplast of leaves and its control to stomatal dynamics. Moreover, further progress is proposed to get a better understanding of the dynamic uptake of NO 2 and NO 3 transporters in leaves.

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Saturation and Utilization of Nitrate Pools in Pea and Sugar Beet Leaves

Cited by 12 publications

References 11 publications

Nitrate accumulation in plants, factors affecting the process, and human health implications. A review

Nitrate accumulation in plants, factors affecting the process, and human health implications. A review

Impact of Light Intensity and Nitrogen of Nutrient Solution on Nitrate Content in Three Lettuce Cultivars Prior to Harvest

NO2-drived NO3– metabolism in leaves

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