The effect of nitrate concentration in a flowing solution system on growth and nitrate uptake of twoPlantago species

Freijsen, A. H. J.; Otten, H.

doi:10.1007/bf02182920

Cited by 23 publications

(14 citation statements)

References 24 publications

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“…coinciding with the maximum RGR value. The maximum IM of the N value was lower than that reported for the grassland herbs Plantago lanceolata and P. major (Freijsen and Otten, 1984).…”

Section: Discussioncontrasting

confidence: 74%

Growth and nutrient absorption in chufa (Cyperus esculentusL. var.sativusBoeck.) in soilless culture

Pascual-Seva

Pascual

Bautista

et al. 2009

The Journal of Horticultural Science and Biotechnology

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“…coinciding with the maximum RGR value. The maximum IM of the N value was lower than that reported for the grassland herbs Plantago lanceolata and P. major (Freijsen and Otten, 1984).…”

Section: Discussioncontrasting

confidence: 74%

Growth and nutrient absorption in chufa (Cyperus esculentusL. var.sativusBoeck.) in soilless culture

Pascual-Seva

Pascual

Bautista

et al. 2009

The Journal of Horticultural Science and Biotechnology

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“…Since nitrogen is acquired solely by the root system, an increase in the root-to-shoot ratio thus allows these plants to increase their chances of obtaining nitrogen to sustain growth. Many experiments have confirmed an increase in root growth versus shoot growth in response to nitrogen in a wide range of species, including maize [24], cotton [25], soya bean [25][26][27], rape [28], Plantago [29], tobacco [30,31], birch [32,33] and Arabidopsis [34,35]. Split root experiments again demonstrate a critical role for the shoot, and suggest that the N-depleted status of the shoot results in promotive systemic signalling.…”

Section: Root System Responses To Environmental Nitrogenmentioning

confidence: 99%

Dissecting the effects of nitrate, sucrose and osmotic potential on Arabidopsis root and shoot system growth in laboratory assays

Roycewicz

Malamy

2012

Phil. Trans. R. Soc. B

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Studying the specific effects of water and nutrients on plant development is difficult because changes in a single component can often trigger multiple response pathways. Such confounding issues are prevalent in commonly used laboratory assays. For example, increasing the nitrate concentration in growth media alters both nitrate availability and osmotic potential. In addition, it was recently shown that a change in the osmotic potential of media alters the plant's ability to take up other nutrients such as sucrose. It can also be difficult to identify the initial target tissue of a particular environmental cue because there are correlated changes in development of many organs. These growth changes may be coordinately regulated, or changes in development of one organ may trigger changes in development of another organ as a secondary effect. All these complexities make analyses of plant responses to environmental factors difficult to interpret. Here, we review the literature on the effects of nitrate, sucrose and water availability on root system growth and discuss the mechanisms underlying these effects. We then present experiments that examine the impact of nitrate, sucrose and water on root and shoot system growth in culture using an approach that holds all variables constant except the one under analysis. We found that while all three factors also alter root system size, changes in sucrose and osmotic potential also altered shoot system size. In contrast, we found that, when osmotic effects are controlled, nitrate specifically inhibits root system growth while having no effect on shoot system growth. This effectively decreases the root : shoot ratio. Alterations in root : shoot ratio have been widely observed in response to nitrogen starvation, where root growth is selectively increased, but the present results suggest that alterations in this ratio can be triggered across a wide spectrum of nitrate concentrations.

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“…From these results it was concluded that P. lanceolata reacts more flexibly to sudden changes in nutrient level, and therefore may be better adapted to a fluctuating environment than P. major, which probably prefers a more stable habitat. When grown in a flowing nutrient solution, with a nitrate concentration of 9.5/~M, growth of P. major was not hampered as compared to that at 7.5 mM nitrate, whereas growth of P. lanceolata was reduced at 9.5#M nitrate (Freijsen and Otten, 1984). However, when grown with an intermittent supply of 25/~M nitrate (one day with nitrate, alternating one or two days without), growth of P. major was reduced more than that of P. lanceolata (Freijsen and Otten, 1979).…”

Section: Introductionmentioning

confidence: 76%

“…Also the decrease in nitrate concentration and the increase in sugar concentration were similar in both species. Summarizing, P. major's plastic response to nitrate stress seems more appropriate than that of P. lanceolata (continuation of root growth, stronger increase of NUE, less loss of leaves), in strong contrast with the reaction to sudden stresses as applied by Freijsen and Otten (1984), Stulen et al (1981a and b) and Lambers et al (1981a and b), where P. lanceolata adjusted more adequately than P. major.…”

Section: Nitrogen Depletion In Plantago 203mentioning

confidence: 91%

The response ofPlantago lanceolata L. andP. major L. spp.major to nitrate depletion

Blacquière

Koetsier

1988

Plant Soil

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To study aspects of the ecology of grassland species, in a comparative experiment, plants of P. lanceolata and P. major were grown in pots in a greenhouse, and subjected to a gradual nitrate depletion for several weeks. Control plants were weekly supplied with nitrate. Growth, leaf appearance and disappearance, concentrations of cations and inorganic anions, soluble and insoluble reduced nitrogen concentrations, in vivo nitrate reductase activity (NRA) and the concentration of non-structural carbohydrates in several parts of the plants were followed. Depletion of nitrate caused a reduction of shoot growth, both in biomass and number of leaves. Withering of leaves increased. Accumulation of root dry matter was little (P. lanceolata), or not (P. major) affected. The concentration of reduced nitrogen in all tissues also decreased, both that of the soluble and that of the insoluble fraction. As a result, nitrogen use efficiency (NUE, g dry matter produced per mmol N incorporated) increased by nitrate depletion. NRA was higher in the roots than in the leaves, and decreased with increasing nitrate depletion.In control plants, nitrate became also limiting. This resulted in decreasing nitrate concentrations in leaves and roots. In the leaves, the decrease in nitrate concentration was preceded by a decrease in NRA. The decrease of the nitrate concentration was parallelled by an increase in the concentration of soluble sugar.No major differences in the response towards nitrate depletion were observed between the two species.

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The effect of nitrate concentration in a flowing solution system on growth and nitrate uptake of twoPlantago species

Cited by 23 publications

References 24 publications

Growth and nutrient absorption in chufa (Cyperus esculentusL. var.sativusBoeck.) in soilless culture

Growth and nutrient absorption in chufa (Cyperus esculentusL. var.sativusBoeck.) in soilless culture

Dissecting the effects of nitrate, sucrose and osmotic potential on Arabidopsis root and shoot system growth in laboratory assays

The response ofPlantago lanceolata L. andP. major L. spp.major to nitrate depletion

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