Nitrate uptake, xylem NO3- flux, and nitrate assimilation in cowpea exposed to
            salinity

Aragão, Ricardo Evangelista Marrocos de; Silveira, Joaquim Albenísio Gomes da; Silva, Evandro Nascimento; Lobo, Ana Karla Moreira; Dutra, Antônia Tathiana Batista

doi:10.5935/1806-6690.20100014

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…This result is in agreement with Ding et al (2010) who worked sorghum plants and found that higher amounts of nitrate (NO 3 -) decreased the Cl -uptake, which is considered a toxic ion, thereby increasing the resistance of plants to stress caused by excess salts. This effect is possibly due to direct competition between Cl -and NO 3 -ions for the same carrier and/or alterations in membrane integrity (Mansour and Salama, 2004;Rubinigg et al, 2005;Aragão et al, 2010).…”

Section: Nitrate Contentmentioning

confidence: 99%

Nitrogen metabolism in sorghum under salinity and silicon treatments in Brazil

Luma¹,

Ellen²,

Risely³

et al. 2016

Afr. J. Agric. Res.

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The objective of the present research was to study nitrogen metabolism in sorghum plants subjected to salt stress and silicon concentration. The experiment was conducted at the Amazon Federal Rural University, Capitão Poço Decentralized Unit for 1 month, in 2013, using the cultivar BR 700 of forage sorghum plants (Sorghum bicolor [Moench.]). The experimental design was completely randomized, in a 5 × 3 factorial arrangement (0, 50, 100, 150 and 200 µM of silicon) and saline concentrations (0, 1.5 and 2.0 M), consisting of 4 replications. Analyses were conducted of amino acids, proteins, free ammonium, nitrate and nitrate reductase. Nitrate content increased in the leaves and root in the treatments 0 and 1.5 µM of Si, but decreased in treatments with the 0.5 and 1.0 µM doses of Si. In leaves and roots, the treatments 1.5 and 2.0 of SC caused reduction and increase, respectively, of ammonium levels. The silicon doses attenuated the negative effects of the treatments on the biochemical compounds caused by higher salt concentrations in sorghum plants.

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Section: Nitrate Contentmentioning

confidence: 99%

Nitrogen metabolism in sorghum under salinity and silicon treatments in Brazil

Luma¹,

Ellen²,

Risely³

et al. 2016

Afr. J. Agric. Res.

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Dark septate endophytic fungi mitigate the effects of salt stress on cowpea plants

et al. 2019

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Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

Almeida

Gomes

Filho

et al. 2016

Revista Ciência Agronômica

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Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi ABSTRACT -This study evaluated the effect of salt stress on the growth of banana seedling colonized with mycorrhizal fungi (AMF) on a substrate from a Quartzipsamment. The experiment was conducted in a greenhouse, using a completely randomized design in split plots; the plots had 5 levels of salinity in irrigation water (0.5, 1.5, 2.5, 3.5 and 4 5 dS m -1 ) and the subplots of four collection periods (40, 60, 80 and 100 days after transplanting), with 4 repetitions, totaling 80 experimental units. The seedlings of banana cv. "Prata" was produced by micropropagation and inoculated with arbuscular mycorrhizal and acclimatization for 40 days. Evaluations were made of leaf gas exchange, shoot dry mass, nutrient content, mycorrhizal root colonization and spore density. Increased levels of salinity caused reduction in dry matter production and photosynthetic rate, which may be associated with osmotic effects of salts in the soil, the increase in sodium and reduced the levels of N in leaves. Salinity reduced root mycorrhizal colonization, but did not influence the density of AMF spores under the conditions of this study. Key words: Musa ssp.. Arbuscular Mycorrhizal Fungi. Salt stress.RESUMO -Este trabalho teve o objetivo de avaliar o efeito do estresse salino no crescimento inicial de mudas de bananeiras colonizadas com fungos micorrízicos arbusculares (FMA) em um substrato proveniente de um Neossolo Quartzarênico. O experimento foi conduzido em casa de vegetação, utilizando-se delineamento inteiramente casualizado em parcelas subdivididas, sendo as parcelas representadas por cinco níveis de salinidade aplicados na água de irrigação (0,5; 1,5; 2,5; 3,5 e 4,5 dS m -1 ) e as subparcelas por quatro períodos de coleta (40; 60; 80 e 100 dias após transplantio das mudas), com quatro repetições, totalizando 80 unidades experimentais. As mudas de bananeira cv. "Prata" foram produzidas por micropropagação e inoculadas com FMA e passaram por um período de micorrização e aclimatação de 40 dias. Foram realizadas avaliações das trocas gasosas foliares, massa seca da parte aérea, teores de nutrientes, colonização micorrízica arbuscular e densidade de esporos. O aumento nos níveis de salinidade provocou redução na produção de matéria seca e na taxa fotossintética, o que pode estar associado aos efeitos osmóticos dos sais no solo, ao aumento nos teores de Na e a redução dos teores de N nas folhas. A salinidade reduziu a colonização micorrízica, porém não influenciou na densidade de esporos no substrato.Palavras-chave: Musa ssp.. Fungos micorrizicos arbusculares. Estresse salino.

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Nitrate uptake, xylem NO3- flux, and nitrate assimilation in cowpea exposed to salinity

Cited by 3 publications

References 23 publications

Nitrogen metabolism in sorghum under salinity and silicon treatments in Brazil

Nitrogen metabolism in sorghum under salinity and silicon treatments in Brazil

Dark septate endophytic fungi mitigate the effects of salt stress on cowpea plants

Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

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