Nitrogen Assimilation in the Highly Salt- and Boron-Tolerant Ecotype Zea mays L. Amylacea

Fuertes‐Mendizábal, Teresa; Bastías, Elizabeth; González‐Murua, Carmen; González‐Moro, María Begoña

doi:10.3390/plants9030322

Cited by 23 publications

(18 citation statements)

References 72 publications

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“…Most SMR treatments resulted in excessive N toxicity mainly due to decreased biomass relative to the 100% peat substrate. Our results concur with those in previous studies, which together demonstrate inhibition of N assimilation pathway through GS activity caused N toxicity [ 32 , 33 ]. The salinity in SMR in proportions higher than 25% caused the toxicity and further limited N assimilation in leaves.…”

Section: Discussionsupporting

confidence: 94%

Nutrient uptake and assimilation in fragrant rosewood (Dalbergia odorifera T.C. Chen) seedlings in growing media with un-composted spent mushroom residue

Xia

Wang

et al. 2021

PLoS ONE

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The purpose of this study was to detect nutrient uptake and assimilation in woody plants subjected to growing media with some peat replaced by spent mushroom residue (SMR). Fragrant rosewood (Dalbergia odorifera T.C. Chen) seedlings were cultured in five types of growing media with SMR and peat in volumetric proportions of 0% (control), 25%, 50%, 75%, and 100%. With the increase of SMR proportion, ammonium- and nitrate-nitrogen (N) concentrations declined but available phosphorus (P) concentration and electrical conductance both increased. Seedlings in the full SMR substrates showed obvious mortality. Seedlings in substrates with SMR in proportions higher than 25% showed symptoms of excessive N and P toxicities. The utilization efficiency for P was highest in the 25% SMR growing-media. Mineral N in substrates had a positive relationship with growth and biomass but not with glutamine synthetase activity. Available P was negatively related with acid phosphatase activity in both leaves and roots. Un-composted SMR can replace 25% of peat in growing media for fragrant rosewood seedlings, benefitting P uptake and assimilation.

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Section: Discussionsupporting

confidence: 94%

Nutrient uptake and assimilation in fragrant rosewood (Dalbergia odorifera T.C. Chen) seedlings in growing media with un-composted spent mushroom residue

Xia

Wang

et al. 2021

PLoS ONE

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“…Although PGPR possess many different mechanisms to maintain plant growth under salinity detriment, the production of ACC deaminase is extremely important in reducing the elevated levels of ethylene, thereby indirectly support plant growth. The ACC deaminase-producing PGPR that live on plant surfaces or colonize in the plant tissues function as a sink for ACC [ 30 ] and the use of ACC as a nitrogen (N) source is beneficial to plant health since N uptake is always suppressed under salt conditions [ 94 ]. Up to now, a plethora of PGPR that have been studied to evaluate their roles in mitigating salinity stress in plants.…”

Section: Plant Growth-promoting Rhizobacteria As the Promising Biomentioning

confidence: 99%

Roles of Plant Growth-Promoting Rhizobacteria (PGPR) in Stimulating Salinity Stress Defense in Plants: A Review

Ha-Tran

Nguyen

Hung

et al. 2021

IJMS

141

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To date, soil salinity becomes a huge obstacle for food production worldwide since salt stress is one of the major factors limiting agricultural productivity. It is estimated that a significant loss of crops (20–50%) would be due to drought and salinity. To embark upon this harsh situation, numerous strategies such as plant breeding, plant genetic engineering, and a large variety of agricultural practices including the applications of plant growth-promoting rhizobacteria (PGPR) and seed biopriming technique have been developed to improve plant defense system against salt stress, resulting in higher crop yields to meet human’s increasing food demand in the future. In the present review, we update and discuss the advantageous roles of beneficial PGPR as green bioinoculants in mitigating the burden of high saline conditions on morphological parameters and on physio-biochemical attributes of plant crops via diverse mechanisms. In addition, the applications of PGPR as a useful tool in seed biopriming technique are also updated and discussed since this approach exhibits promising potentials in improving seed vigor, rapid seed germination, and seedling growth uniformity. Furthermore, the controversial findings regarding the fluctuation of antioxidants and osmolytes in PGPR-treated plants are also pointed out and discussed.

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“…Nutritional disorders resulting from salinity could emanate from its effect on competitive uptake, nutrient availability and transport within the plant (Grattan and Grieve 1999;Fageria et al 2011). Decreased nitrogen uptake under saline conditions has been due to interaction of NO 3 − and Cl − (Bar et al 1997;Fuertes-Mendizábal et al 2020) and Na + and NH 4 + (Rozeff 1995;Fuertes-Mendizábal et al 2020). Nutrient inefficiencies in plants may also come from high concentrations of sodium ion in the soil which decreases the concentration of the available magnesium, potassium and calcium ions (Asch et al 2000;Hu and Schmidhalter 2005).…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical evaluation of river Ajali water for irrigational application in agricultural farmland

et al. 2021

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A major population of Udi and Ezeagu communities residing along river Ajali is peasant farmers who engage in the cultivation of vegetables along the river banks during the dry seasons. The existence of beverage industries around the 9th Mile Corner Ngwo of Enugu State has caused both communities to suffer from a shortage of quality drinking water, due to the constant discharge of wastewater by these industries into the Ajali River, which flows through these communities. Ajali River water near some beverage industries was then assessed for irrigation application. Water samples were collected from different locations along the river. Physicochemical and ionic parameters were analyzed using standard methods. Irrigation water criteria were applied, and the result showed that the major cation and anions were Mg2+, Ca2+, Na+, K+ and HCO3−, SO42−, $${\text{PO}}_{4}^{3- }$$ PO 4 3 - , NO3−, Cl−, CO3− . Na+ was dominant with 43% average contribution of all the cations, while the least was Mg2+ with 4% average contribution; HCO3− was the dominant anion with 31% contribution while $${\text{PO}}_{4}^{3- }$$ PO 4 3 - was the least with 2% average contribution. The trend of the cations was Na+ > K+ > Ca2+ > Mg2+ while the anions were HCO3− > SO42− > Cl− > NO3− > CO3− > PO43−. The cation concentrations were within FAO irrigation water specifications. However, some samples recorded higher values of carbonate above FAO limit (0–3 mg/L). All the irrigation assessment criteria suggested that Ajali River water is suitable for irrigation purposes.

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Nitrogen Assimilation in the Highly Salt- and Boron-Tolerant Ecotype Zea mays L. Amylacea

Cited by 23 publications

References 72 publications

Nutrient uptake and assimilation in fragrant rosewood (Dalbergia odorifera T.C. Chen) seedlings in growing media with un-composted spent mushroom residue

Nutrient uptake and assimilation in fragrant rosewood (Dalbergia odorifera T.C. Chen) seedlings in growing media with un-composted spent mushroom residue

Roles of Plant Growth-Promoting Rhizobacteria (PGPR) in Stimulating Salinity Stress Defense in Plants: A Review

Hydrochemical evaluation of river Ajali water for irrigational application in agricultural farmland

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