Influence of nitrate - ammonium ratio on the growth, nutrition, and metabolism of sugarcane

Boschiero, Beatriz Nastaro; Mariano, Eduardo; Azevedo, Ricardo Antunes

doi:10.1016/j.plaphy.2019.03.024

Cited by 38 publications

(27 citation statements)

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“…Moreover, NUE of cotton genotypes was enhanced under nitrate than ammonium‐N, as demonstrated by the high uptake and utilization efficiency. A 20% reduction in N utilization efficiency of sugarcane was noted under ammonium‐N as compared to nitrate‐N . The increase in N uptake and utilization efficiency under nitrate‐N was also reported previously in maize .…”

Section: Discussionsupporting

confidence: 84%

Nitrogen preference and genetic variation of cotton genotypes for nitrogen use efficiency

et al. 2020

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BACKGROUND Although nitrogen (N) availability is a major determinant of cotton production, little is known about the importance of plants' preference for ammonium versus nitrate for better growth and nitrogen use efficiency (NUE). We aimed to assess the growth, physiology, and NUE of contrasting N‐efficient cotton genotypes (Z‐1017, N‐efficient and GD‐89, N‐inefficient) supplied with low and high concentrations of ammonium‐ and nitrate‐N. RESULTS The results revealed that ammonium fed plants showed poor root growth, lower dry biomass, N content, leaf chlorophyll and gas exchange than those under nitrate irrespective of the concentration. However, the highest N uptake and utilization efficiency were obtained with nitrate fed plants, which also resulted in the highest dry biomass, N content, leaf chlorophyll and gas exchange as well as root growth. The results further confirmed that N‐efficient (Z‐1017) genotype performed better under both N sources, showing more flexibility to contrasting N condition by increasing growth and NUE in either source of N. Moreover, multivariate analysis showed a strong relationship of root morphological traits with N utilization efficiency, suggesting the physiological importance of roots over shoots in response to low nitrate concentration. CONCLUSION Thus, it was confirmed that nitrate‐N is superior to ammonium‐N and the use of nitrate and N‐efficient genotype is the best option for optimum cotton growth and NUE. Further, field evaluation is required to confirm the hypothesis that nitrate is a preferred N source for better cotton production and NUE. © 2020 Society of Chemical Industry

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Section: Discussionsupporting

confidence: 84%

Nitrogen preference and genetic variation of cotton genotypes for nitrogen use efficiency

et al. 2020

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“…The SP content for X32 and N1 leaves were both increased. Previous studies have reported that exogenous AAs reduced the activity of NO 3 − and NH 4 + absorption and assimilation [ 8 ].…”

Section: Discussionmentioning

confidence: 99%

“…Generally, nitrate nitrogen (NO 3 − -N) and ammonium nitrogen (NH 4 + -N) are mainly taken up in plants, rather than amino acids (AAs) or other N organic forms. Moreover, NO 3 − -N is also the regulatory factor in response to N metabolism, thus playing a critical role in regulating carbon absorption, the carbon and N absorption ratio and light cooperation efficiency [ 8 ]. NH 4 + -N plays a crucial role in the N acquisition regulation by influencing the transcription and/or activity of root NO 3 − transport systems [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…NH 4 + -N plays a crucial role in the N acquisition regulation by influencing the transcription and/or activity of root NO 3 − transport systems [ 9 ]. In sugarcane, drought stress reduced NO 3 − and NH 4 + uptake [ 8 ]. Additionally, the nitrate transporter family ( NRT1:1 and NRT2.1 ) may play crucial roles in NH 4 + and NO 3 − uptake in winter wheat ( Triticum aestivum L.) and Populus [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Drought-Induced Responses of Nitrogen Metabolism in Ipomoea batatas

Xia

Zhang

et al. 2020

Plants

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This study investigated the effect of water stress, simulated by the polyethylene glycol (PEG-6000) method, on nitrogen (N) metabolism in leaves and roots of hydroponically grown sweet potato seedlings, Xushu 32 (X32) and Ningzishu 1 (N1). The concentrations of PEG-6000 treatments were 0%, 5% and 10% (m/v). The results showed that the drought-treated plants showed a decline leaf relative water content, and revealed severe growth inhibition, compared with the 0% treatment. Under drought stress, the decline in biomass of the leaf and stem was more noticeable than in root biomass for X32, leading to a higher root to shoot ratio. Drought stress increased the nitrate nitrogen (NO3−-N) and protein in leaves, but reduced all the activities of N-metabolism enzymes and the transcriptional levels of nitrate reductase (NR), glutamine synthetase (GS) and glutamate synthase (GOGAT); in roots, NO3−-N and NR had opposite trends. The leaf ammonium nitrogen (NH4+-N), GS and amino acid had different trends between X32 and N1 under drought stress. Furthermore, the transcriptional level of nitrate transporter genes NRT1.1 in leaves and roots were upregulated under drought stress, except in N1 roots. In conclusion, NR determined the different response to drought in leaves for X32 and N1, and GS and GOGAT determined the response to drought in roots, respectively.

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“…Nitrate (NO 3 − ), ammonium (NH 4 + ), and urea (CO(NH 2 ) 2 ) are the main forms of fertilizers and, thus, are the main sources of N for crops (Esteban et al , 2016). Some crops have a preference for NH 4 + uptake (Malagoli et al , 2000), but most studies have reported stress symptoms associated with NH 4 + toxicity (Barreto et al , 2018; Boschiero et al , 2019). While Robinson et al (2011) reported the sugarcane preference for NH 4 + , Pissolato et al (2019) found that increasing NH 4 + supply causes biomass reduction and photosynthesis impairment of sugarcane plants.…”

Section: Introductionmentioning

confidence: 99%

Enhanced nitric oxide synthesis through nitrate supply improves drought tolerance of sugarcane plants

Pissolato

Silveira

Prataviera

et al. 2019

Preprint

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37Nitric oxide (NO) is an important signaling molecule associated with many 38 biochemical and physiological processes in plants under stressful conditions. 39 Nitrate reductase (NR) not only mediates the reduction of NO 3¯ to NO 2¯ but also 40 reduces NO 2¯ to NO, a relevant pathway for NO production in higher plants. 41 Herein, we hypothesized that sugarcane plants supplied with more NO 3¯ as a 42 source of N would produce more NO under water deficit. Such NO would 43 reduce oxidative damage and favor photosynthetic metabolism and growth 44 under water limiting conditions. Sugarcane plants were grown in nutrient 45 solution and received the same amount of nitrogen, with varying 46 nitrate:ammonium ratios (100:0 and 70:30). Plants were then grown under well-47 watered or water deficit conditions, in which the osmotic potential of nutrient 48 solution was -0.15 and -0.75 MPa, respectively. Under water deficit, plants 49 exhibited higher root [NO 3¯] and [NO 2¯] when supplied with 100% NO 3¯. 50Accordingly, the same plants also showed higher root NR activity and root NO 51 production. We also found higher photosynthetic rates and stomatal 52 conductance in plants supplied with more NO 3¯, which improved root growth. 53 ROS accumulation was reduced due to increases in the activity of catalase in 54 leaves and superoxide dismutase and ascorbate peroxidase in roots of plants 55 supplied with 100% NO 3¯ and facing water deficit. Such positive responses to 56 water deficit were offset when a NO scavenger was supplied to the plants, thus 57 confirming that increases in leaf gas exchange and plant growth were induced 58 by NO. Concluding, NO 3¯ supply is an interesting strategy for alleviating the 59 negative effects of water deficit on sugarcane plants, increasing drought 60 tolerance through enhanced NO production. Our data also provide insights on 61 how plant nutrition could improve crop tolerance against abiotic stresses, such 62 as drought. 63 64 Akaike T, Maeda H. 1996. Quantitation of nitric oxide using 2-phenyl-4, 4, 5, 5tetramethylimidazoline-1-oxyl 3-oxide (PTIO). Methods in Enzymology 268, 211-221. Albertos P, Romero-Puertas MC, Tatematsu K, Mateos I, Sánchez-Vicente I, Nambara E, Lorenzo O. 2015. S-nitrosylation triggers ABI5 degradation to promote seed germination and seedling growth. Nature Communications 6, 8669. Alderton WK, Cooper CE, Knowles RG. 2001. Nitric Oxide Synthases: structure, function and inhibition. Biochemistry Journal 357, 593-615. Alexieva V, Sergiev I, Mapelli S, Karanov E. 2001. The effect of drought and ultraviolet radiation on growth and stress markers in pea and wheat. Plant, Cell and Environment 24, 1337-1344. Andrés RM, Peralta AS, Vázquez JPS, Mendivil SN, Cabrera JAP, Torres MES, Dubrovsky JG, Ruan VL. 2015. The nitric oxide production in the moss Physcomitrella patens is mediated by nitrate reductase. PloS One 10, e0119400. Arasimowicz-Jelonek M, Floryszak-Wieczorek J, Kubiś J. 2009. Involvement of nitric oxide in water stress-induced responses of cucumber roots. Plant...

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Influence of nitrate - ammonium ratio on the growth, nutrition, and metabolism of sugarcane

Cited by 38 publications

References 69 publications

Nitrogen preference and genetic variation of cotton genotypes for nitrogen use efficiency

Nitrogen preference and genetic variation of cotton genotypes for nitrogen use efficiency

Drought-Induced Responses of Nitrogen Metabolism in Ipomoea batatas

Enhanced nitric oxide synthesis through nitrate supply improves drought tolerance of sugarcane plants

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