Effect of boron supply on nitrate concentration and its reduction in roots and leaves of tobacco plants

Matas, M. A.; González-Fontes, Agustı́n; Camacho-Cristóbal, Juan J.

doi:10.1007/s10535-009-0016-0

Cited by 29 publications

(18 citation statements)

References 29 publications

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“…Our data are in agreement with those of Bonilla et al (1980) and Matas et al (2009) suggesting a specific action of B on N metabolic chain. According to Howe (1998) and Banon et al (2012) boron plays an important role in the photosynthesis and in the initial stages of metabolic path, sugar translocation and hormone action.…”

Section: Leaf Vitality Index Responses To Soil Moisture Boron and Nisupporting

confidence: 92%

“…The lower total sugar content can be explained by the increased accumulation of B ions in plant tissues (data not shown) and their negative results in sugar formation. The application of increased level of N (0.30, 0.45 and 0.60 g/kg) had a positive impact on sugar concentration confirming the competition between N and B in plant uptake (Matas et al 2009). Under intermediate N fertilization at both soil moistures and without external B supply, sugars had the highest concentration suggesting that at 0.30 and 0.45 g/kg, there is an adequate balance between the assimilation of C and N, allowing leaves with higher accumulation of quality-related compounds ( Table 2).…”

Section: Quality Characteristics Responses To Soil Moisture Boron Anmentioning

confidence: 74%

“…Irrigation greatly reduces risk of crop failure (Stefanelli et al 2011). Nitrogen (N) is an indispensable element for the synthesis of proteins such as enzymes, which are responsible for the production of all the cellular components and secondary metabolites required for the development of the plant, and hence nitrate availability in the soil and plant tissue concentration can limit plant growth (Lawlor 2002). Nitrate reduction catalysed by nitrate reductase (NR), is the primary step in the nitrate assimilation process and it is essential for the production of ammonium to be incorporated into carbon skeletons for amino acid biosynthesis (Matas et al 2009). Very high nitrogen fertilization is often applied with the belief that it promotes vegetative development and yield.…”

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confidence: 99%

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Interaction of soil moisture and excess of boron and nitrogen on lettuce growth and quality

Ouzounidou¹,

Paschalidis²,

Petropoulos³

et al. 2013

Hort. Sci. (Prague)

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Ouzounidou G., Paschalidis C., Petropoulos D., Koriki A., Zamanidis P., Petridis A., 2013. Interaction of soil moisture and excess of boron and nitrogen on lettuce growth and quality. Hort. Sci. (Prague), 40: 119-125.A study of the effects of boron (10 mg/kg as H 3 BO 3 ) and nitrogen (0-0.15-0.30-0.45-0.60 g/kg) fertilization in combination with soil water capacity (40% and 70%) on lettuce growth and nutritional value was performed. The effects of the simultaneous application of N and B depend on the soil moisture, since lower water in the soil reduced lettuce growth and quality. Linear correlation was found between N fertilization and lettuce yield and quality at the two water soil capacities. Only when N fertilization exceeded 0.45 g/kg the fresh and dry biomass, photosynthesis, sugars and ascorbic acid showed negative influence as compared to the control. The toxic effects of B in lettuce cultivation were alleviated by the presence of high N doses, since a competition between N and B ions was revealed. Overall, the management of irrigation and N fertilization is very important in soils with boron toxicity.

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Section: Leaf Vitality Index Responses To Soil Moisture Boron and Nisupporting

confidence: 92%

Section: Quality Characteristics Responses To Soil Moisture Boron Anmentioning

confidence: 74%

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confidence: 99%

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Interaction of soil moisture and excess of boron and nitrogen on lettuce growth and quality

Ouzounidou¹,

Paschalidis²,

Petropoulos³

et al. 2013

Hort. Sci. (Prague)

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“…However, its function in plants has not yet been fully understood (Bolaños et al 2004, Matas et al 2009). It was reported that B deficiency decreases plant photosynthetic capacity due to reduction of chlorophyll (Chl) content, Hill reaction activity (El-Shintinavy 1999), photosynthetic electron transport and activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and fructose-1,6-bisphosphatase (Han et al 2009).…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Effect of low boron supply in turnip plants under drought stress

Hajiboland¹,

Farhanghi²

2011

Biologia plant.

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Turnip (Brassica rapa L.) plants were grown in Perlite with low (< 2.5 µM) or adequate (25 µM) boron supply under well-watered and drought conditions for 12 weeks. Dry mass of leaves and roots was reduced under drought by about 61 and 56 % in plants supplied adequately with B, while up to 84 and 74 % under B starvation. Drought reduced B content by about 70 and 82 % for B-sufficient and B-deficient plants, respectively. According to the chlorophyll fluorescence parameters, the photosynthesis processes conserved their normal activities under low B supply in wellwatered plants, while a serious damage to photosystem 2 occurred under drought stress. Stomatal limitation was the most important cause for a 17 % lower net photosynthetic rate (P N ) of drought stressed B-sufficient plants. In B-deficient plants, however, both stomatal and non-stomatal limitations were involved in 53 % reduction of P N . Low B supply reduced strongly leaf water potential.Additional key words: boron deficiency, carotenoids, chlorophyll, fluorescence, gas exchange, water potential. ⎯⎯⎯⎯Boron is a micronutrient required for normal growth of higher plants. However, its function in plants has not yet been fully understood (Bolaños et al. 2004, Matas et al. 2009). It was reported that B deficiency decreases plant photosynthetic capacity due to reduction of chlorophyll (Chl) content, Hill reaction activity (El-Shintinavy 1999), photosynthetic electron transport and activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and fructose-1,6-bisphosphatase (Han et al. 2009).Soil water is one of the important factors affecting B availability for plant roots (Marschner 1995). Roots absorb B mainly as non-dissociated boric acid which is transported to the leaves via transpiration stream. Therefore, water stress may accentuate B deficiency. However, very little information is available on this relationship and evidences on the effect of water stress on B nutrition are controversial. Water stress has been shown to depress B content in barley and black gram plants (Gupta 1979, Noppakoonwong 1991 and depresses B uptake and transport into young leaves in wheat (Huang et al. 1997). In contrast, another report on wheat showed that B concentration of flag leaf and ear was not affected by irrigation (Pant et al. 1998).Turnip is an important vegetable crop that is known to be susceptible to B deficiency (Shorrocks 1997). However, detailed researches on physiological consequences of low B supply in this plant subjected to drought stress are rare. This work was aimed to study the combination effect of water stress and low B supply on growth, water relations, B content and photosynthesis in turnip plants.Seeds of turnip (Brassica rapa L.) plants were surface-sterilized and germinated in the dark. Seven-dayold young seedlings were transferred to the pots filled with Perlite (1 -2 mm particles) irrigated for two weeks with water or 50 % nutrient solution with low B (< 2.5 µM as contamination of nutrient solution) at field capacity. Thereafter, plants were...

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“…Since 1956, when the purification and characterization of the first plant glutamine was reported (Miflin and Habash 2002), numerous GS isoenzymes have been isolated from various plant species, and different characterization studies have ⎯⎯⎯⎯ shown that these GS genes can display organ-specific, cell-specific, developmental and temporal patterns of mRNA expression (Oliveira and Coruzzi 1999). They are regulated by a variety of environmental factors such as radiation, temperature, salt stress, heavy metal ion toxicity, carbon sources, and especially by supplementation of N in various forms (ammonium, nitrate, and amino acids) (Rana et al 2008, Li et al 2009, Matas et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Molecular cloning and characterization of nitrogen source responsive GS1 gene from melon

Deng¹,

Zhang²,

Guan³

et al. 2011

Biol. plant.

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A full-length cDNA clone encoding cytosolic glutamine synthetase (GS1; EC 6.3.1.2) was isolated from melon (Cucumis melo L.) for the first time by RT-PCR and RACE approach. The clone, designated as M-GS1 (accession No. DQ851867), contains 1494 nucleotides with an open reading frame (ORF) of 1068 nucleotides. The deduced 356 amino acid sequence showed high similarity with previously reported GS1s from various plant species. Sequence analysis revealed that the predicted protein contains a GS β-Grasp domain, a GS catalytic domain, and the main conserved motifs characteristic of a plant GS1. The phylogenetic analysis displayed that M-GS1 is related most closely to the GS1 from Datisca glomerata. Southern blot analysis indicated that M-GS1 belongs to a small gene family of 2 or 3 members. M-GS1 was expressed in all plant tissues without evident tissue specificity, but with different patterns when the melon plants were fed in hydroponic culture with different forms and concentration of nitrogen. Ammonium dramatically enhanced the contents of M-GS1 transcripts in all tested tissues, while nitrate stimulated M-GS1 transcription only in the roots and leaves, but not in the stems; glutamate, however, depressed M-GS1 transcripts in the roots, but resulted in no significant change to the levels of M-GS1 transcripts in the stems and leaves. Moreover, the same effects were observed at the GS enzyme activity level. These results indicated that melons respond to changes of N nutrition by regulating M-GS1 expression.Additional key words: Cucumis melo, cytosol, glutamine synthetase, nitrogen forms, relative mRNA level, total GS enzyme activity.

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Effect of boron supply on nitrate concentration and its reduction in roots and leaves of tobacco plants

Cited by 29 publications

References 29 publications

Interaction of soil moisture and excess of boron and nitrogen on lettuce growth and quality

Interaction of soil moisture and excess of boron and nitrogen on lettuce growth and quality

Effect of low boron supply in turnip plants under drought stress

Molecular cloning and characterization of nitrogen source responsive GS1 gene from melon

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