Nitrogen utilization by sulfur-deficient barley plants depends on the nitrogen form

Bona, F. D. De; Fedoseyenko, Dmitri; Wirén, Nicolaus von; Monteiro, Francisco Antônio

doi:10.1016/j.envexpbot.2011.06.005

Cited by 36 publications

(28 citation statements)

References 52 publications

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“…In cereal plant species, increases in S fertilization can enhance the efficiency of N uptake and use because S is a constituent of some enzymes involved in N metabolism (Salvagiotti et al 2009;De Bona et al 2011). Wheat plants exposed to distinct N and S levels revealed an important relationship between N and S. When N was less limiting, N uptake was high at the highest S concentration.…”

Section: Sulfur Uptake and Assimilationmentioning

confidence: 97%

“…SO 4 2− assimilation declines under nitrate (NO 3 − ) deficiency, and the capacity to reduce NO 3 − and the activity of nitrate reductase (NR, EC 1.6.6.1-3) are diminished in plants that are starved for SO 4 2− (Kopriva and Rennenberg 2004;De Bona et al 2011). In tobacco plants, for example, SO 4 2− uptake by the roots was drastically reduced when NR was inactivated (Kruse et al 2007;Siddiqui et al 2012).…”

Section: Sulfur Uptake and Assimilationmentioning

confidence: 99%

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Sulfur Metabolism and Stress Defense Responses in Plants

Capaldi

Gratão

Reis

et al. 2015

Tropical Plant Biol.

188

118

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Sulfur management is an important issue in crop plant nutrition. Sulfur has a role in fundamental processes such as electron transport, structure and regulation. It is also associated with photosynthetic oxygen production, abiotic and biotic stress resistance and secondary metabolism. Sulfate uptake, reductive assimilation and integration into cysteine and methionine are the central processes that direct oxidized and reduced forms of organically bound S into their various functions. Sulfur-containing defense compounds that are crucial for plant survival during biotic and abiotic stress include elemental sulfur, hydrogen sulfide, glutathione, phytochelatins, S-rich proteins and various secondary metabolites. Formation of these compounds in plants is closely related to the supply, demand, uptake and assimilation of S. This review will highlight the role of S during the stress response in plants and the relationship between S metabolism and primary S nutrition.

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Section: Sulfur Uptake and Assimilationmentioning

confidence: 97%

Section: Sulfur Uptake and Assimilationmentioning

confidence: 99%

Sulfur Metabolism and Stress Defense Responses in Plants

Capaldi

Gratão

Reis

et al. 2015

Tropical Plant Biol.

188

118

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“…The fate of these two essential plant micronutrients in the rhizosphere is tightly linked: nitrogen and sulphur are essential constituents of amino acids and proteins and their uptake and metabolism in plant is co-regulated [34]. For example, sulphur-deprived, soil-grown barley plants accumulate more nitrate in their shoots than their cognate controls not exposed to such a nutritional starvation, suggesting that sulphur deficiency directly impacts on nitrogen metabolism in planta [35]. Thus, the dual enrichment of nitrogen and sulphur metabolisms in the Desert rhizosphere may underpin either a mutual relationship, whereby rhizosphere microbes facilitate the release of a “balanced” set of minerals from organic substrate for plant nutrition [36] or a host-microbe competition for these resources.…”

Section: Discussionmentioning

confidence: 99%

Defining composition and function of the rhizosphere microbiota of barley genotypes exposed to growth-limiting nitrogen supplies

Robertson-Albertyn

et al. 2019

Preprint

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BackgroundSince the dawn of agriculture, human selection on plants has progressively differentiated input-demanding productive crops from their wild progenitors thriving in marginal areas. Barley (Hordeum vulgare), the fourth most cultivated cereal globally, is a prime example of this process. We previously demonstrated that wild and domesticated barley genotypes host distinct microbial communities in their rhizosphere. Here we tested the hypothesis that microbiota diversification is modulated by, and in response to, nitrogen (N) application in soil and we assessed the impact of microbiota composition on plant growth.MethodsWe grew two wild (H. vulgaressp.spontaneum) and a modern domesticated (H. vulgaressp.vulgare) barley genotypes in an agricultural soil amended with and without nitrogen (N) inputs. By using a two-pronged 16S rRNA gene survey and a shotgun metagenomics approach, we determined the impact of N application on the taxonomic composition of the barley microbiota as well as the functional diversification of microbial communities exposed to limiting nitrogen supplies. In parallel, we used metagenomics reads to reconstruct genomes of individual bacterial members of the microbiota. Finally, we implemented a plant-soil feedback experiment to assess the microbiota’s contribution to plant growth.ResultsRhizosphere profiles were distinct from unplanted soil controls and displayed a significant, plant-mediated, N application-dependent taxonomic diversification which is maximised under N-limiting conditions. Strikingly, this diversification mirrors a metabolic specialisation of the barley microbiota, with functions implicated in nitrogen and sulphur metabolism enriched in a wild genotype as opposed to the RNA and cell capsule metabolisms enriched in a modern genotype. We reconstruct 28 high-quality individual bacterial genomes with a bias for Bacteroidetes and Proteobacteria, which are among the taxa differentially recruited between wild and modern genotypes. A plant-soil feedback experiment revealed that modern plants exposed to heat-sterilised soils grew less compared to plants maintained in untreated soils, although this difference was significant only for plants exposed to the wild barley microbiota.ConclusionsOur results point at nitrogen availability as a modulator of the structural and functional configuration of the rhizosphere bacterial communities and suggest a limited, but significant, contribution of the wild barley microbiota to plant growth. This knowledge will contribute to devise strategies to enhance sustainable crop production.

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“…The low S supply may increase NO 3 -N accumulation and soluble protein in plant tissue [13], due to possible restriction in NO 3 -N reductase enzyme [14].…”

Section: Right Ratementioning

confidence: 99%

Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses

Serra¹,

Marchetti²,

Dupas³

et al. 2018

New Perspectives in Forage Crops

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There is a concern about the growing population and limitation in natural resources which are taking the population to direct its agricultural systems into a more productive and efficient activity, looking to avoid a negative impact on the surrounding environment. The industry energy expended to produce nitrogen (N)-fertilizer is considered an indirect consumption of energy in agriculture, which is higher with an increasing forage yield. Nitrogen is the key nutrient associated with high-yielding production in forage grass and grain crops. The aim of this chapter is to introduce the best management practices (BMPs) for N-fertilizer application in forage grasses to improve N-use efficiency, since the most economical way to feed livestock is forage plants where its potential biomass production is not well explored. The BMPs basically follow three management practices: (1) soil nutrient availability and forage requirement, (2) fertilizer application, and (3) decrease in nutrient losses from soil. In order to take a decision on applying N-fertilizer to accomplish forage grasses production with social, economic, and environmental benefits, the N-fertilizer use in forage grasses is going to follow the "Right rate, Right source, Right place, and Right time (4R) nutrient stewardship." The application of the 4R's nutrients stewardship is directly associated with economic, social, and environmental impact. The capacity of the 4R's implementation worldwide turns into a best guide to improve the striving of better N-use efficiency in forage grass. The 4R's are interrelated; thus, the recommendation of N-fertilizer rates cannot be prescribed without the combination of the 4R's where a whole system to be followed should be considered to decide about N-fertilizer in pasture. Consequently, any decision in one of the 4R's is going to affect the expected N-fertilizer results and dry matter production.

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Nitrogen utilization by sulfur-deficient barley plants depends on the nitrogen form

Cited by 36 publications

References 52 publications

Sulfur Metabolism and Stress Defense Responses in Plants

Sulfur Metabolism and Stress Defense Responses in Plants

Defining composition and function of the rhizosphere microbiota of barley genotypes exposed to growth-limiting nitrogen supplies

Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses

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