Short-term water stress affecting NO 3 − absorption by almond plants

Martínez, Herminia; Olivos, Andres; Brown, Patrick H.; Clemente, Júnia Maria; Bruckner, Cláudio Horst; Jifon, John

doi:10.1016/j.scienta.2015.10.040

Cited by 11 publications

(10 citation statements)

References 27 publications

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“…In fact, N content and its metabolism in and outside of plants plays an essential role as a signal in closely regulating the response associated with the resistance/tolerance/adaption of plants to environmental challenges, including drought stress 14 , 15 . Several studies including the present work have reported that drought stress affects N absorption and consequently inhibits enzymes through alteration in the transcriptional levels of transporters implicated in N-metabolism (e.g., nitrate (NO 3 − ) transporters (NRTs), ammonium (NH 4 + ) transporters (AMTs), nitrate reductase (NR), nitrite reductase (NiR), glutamine synthetase (GS), glutamate synthase (GOGAT), glutamate dehydrogenase (GDH)) 16 – 18 .…”

Section: Introductionmentioning

confidence: 76%

Root NRT, NiR, AMT, GS, GOGAT and GDH expression levels reveal NO and ABA mediated drought tolerance in Brassica juncea L.

Sahay

Robledo-Arratia

Głowacka

et al. 2021

Sci Rep

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Little is known about the interactive effects of exogenous nitric oxide (NO) and abscisic acid (ABA) on nitrogen (N) metabolism and related changes at molecular and biochemical levels under drought stress. The present study highlights the independent and combined effect of NO and ABA (grouped as “nitrate agonists”) on expression profiles of representative key genes known to be involved in N-uptake and assimilation, together with proline metabolism, N–NO metabolism enzyme’s activity and nutrient content in polyethylene glycol (PEG) treated roots of Indian mustard (B. juncea cv. Varuna). Here we report that PEG mediated drought stress negatively inhibited growth performance, as manifested by reduced biomass (fresh and dry weight) production. Total N content and other nitrogenous compounds (NO3−, NO2−) were decreased; however, NH4+, NH4+/ NO3− ratio and total free amino acids content were increased. These results were positively correlated with the PEG induced changes in expression of genes and enzymes involved in N-uptake and assimilation. Also, PEG supply lowered the content of macro- and micro-nutrients but proline level and the activity of ∆1-pyrroline-5-carboxylate synthetase increased indicating increased oxidative stress. However, all these responses were reversed upon the exogenous application of nitrate agonists (PEG + NO, PEG + NO + ABA, and PEG + ABA) where NO containing nitrate agonist treatment i.e. PEG + NO was significantly more effective than PEG + ABA in alleviating drought stress. Further, increases in activities of L-arginine dependent NOS-like enzyme and S-nitrosoglutathione reductase were observed under nitrate agonist treatments. This indicates that the balanced endogenous change in NO and ABA levels together during synthesis and degradation of NO mitigated the oxidative stress in Indian mustard seedlings. Overall, our results reveal that NO independently or together with ABA may contribute to improved crop growth and productivity under drought stress.

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Section: Introductionmentioning

confidence: 76%

Root NRT, NiR, AMT, GS, GOGAT and GDH expression levels reveal NO and ABA mediated drought tolerance in Brassica juncea L.

Sahay

Robledo-Arratia

Głowacka

et al. 2021

Sci Rep

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“…Thus, it is necessary developing strategies focused on rationalizing fertilizer use, as well as, on maintaining fruit yield and quality with low environmental impact. Accordingly, kinetic parameters associated with nutrient uptake (V max , K m and C min ) by rootstocks or cultivars (MARTINEZ et al, 2015), can help selecting plants adapted to soils with lower and higher natural fertility or to those that need higher (or lower) doses (or frequency) of nutrient application (PAULA et al, 2018).…”

Section: The Importance Of the Technique Of Evaluating Kinetic Paramementioning

confidence: 99%

Kinetic parameters estimation for increasing the efficiency of nutrient absorption in fruit trees

et al. 2021

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The selection of rootstocks presenting traits of interest, such as resistance to pests and diseases, and compatibility with scion capable of producing fruits attractive to the market, has revolutionized fruit crops worldwide. However, the enormous potential of plants to be selected based on their nutrient uptake efficiency is yet to be properly explored; it can be done based on knowledge about kinetic parameters such as Influx, Maximum uptake velocity, Constant ion affinity with the carrier, and Minimum concentration. The adaptation of a methodology elaborated for annual crops to set kinetic parameters, as well as the Brazilian development of the Influx software, enabled selecting not only peach rootstocks with different nutrient uptake capacities, but also observing the influence the grafting of a particular cultivar crown has on rootstock’s ability to uptake a given nutrient from the soil. Thus, fruit tree rootstocks and cultivars can always be selected based on traits desired by fruit growers and consumers, with emphasis on yield and quality of fruits. They can also be more efficient in taking up nutrients from low natural-fertility soils that require lower nutrient amounts, a fact that increases fertilizer use rationalization and reduces environmental contamination processes resulting from excessive nutrient applications.

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“…In traditional peach‐producing countries, the peach (Prunus persica) breeding programs select rootstocks and cultivars based on characteristics of agronomic interest, such as yield, fruit quality, resistance to disease, and adaptation to the climatic conditions of each region 1 . However, kinetic parameters like the maximum uptake rate ( V max ), Michaelis–Menten constant ( K m ), minimum concentration ( C min ), and nutrient influx rate ( I ) are not commonly taken into consideration 2 . Likewise, nutrient absorption efficiency is not usually considered, including nitrogen (N), which is the nutrient that most interferes with the quality and yield of temperate fruit such as the peach tree 3‐5 …”

Section: Introductionmentioning

confidence: 99%

Kinetic parameters related to nitrogen uptake in ‘Okinawa’ peach rootstocks are altered by ‘Chimarrita’ scion Nitrogen uptake in ‘Okinawa’ peach rootstock

et al. 2022

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Background The kinetic parameters of peach rootstock are a major factor contributing to its nitrogen (N) uptake efficiency, which directly affects the yield and quality parameters. However, the impact of grafting on N kinetic parameters is not sufficiently known as rootstocks are grafted with other scion cultivars before being transplanted to the field. The objective of this study was therefore to evaluate whether the grafting of ‘Okinawa’ rootstock with the scion cultivar ‘Chimarrita’ can alter the kinetic parameters related to N uptake. Results The plants were acclimatized in Hoagland solution for 21 days and, sequentially, were tested to assess the depletion of the internal reserves at 15 and 30 days in CaSO4 solution. Morphological and physiological parameters were evaluated, and kinetic parameters were calculated. The depletion period for to reach the minimum concentration (Cmin) of NO3− and NH4+ in the plant was 62 h and 56 h, respectively. The optimal time for internal reserve depletion for ‘Okinawa’ rootstock with and without the ‘Chimarrita’ scion was 30 days. Conclusion ‘Okinawa’ rootstock grafted with ‘Chimarrita’ scion cultivar was more efficient in NO3− and NH4+ uptake. © 2022 Society of Chemical Industry.

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Short-term water stress affecting NO 3 − absorption by almond plants

Cited by 11 publications

References 27 publications

Root NRT, NiR, AMT, GS, GOGAT and GDH expression levels reveal NO and ABA mediated drought tolerance in Brassica juncea L.

Root NRT, NiR, AMT, GS, GOGAT and GDH expression levels reveal NO and ABA mediated drought tolerance in Brassica juncea L.

Kinetic parameters estimation for increasing the efficiency of nutrient absorption in fruit trees

Kinetic parameters related to nitrogen uptake in ‘Okinawa’ peach rootstocks are altered by ‘Chimarrita’ scion Nitrogen uptake in ‘Okinawa’ peach rootstock

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