Alleviation of Drought Stress by Nitrogen Application in Brassica campestris ssp. Chinensis L.

Xiong, Xin; Chang, Liu; Khalid, Muhammad; Jing-jin, Zhang; Huang, Danfeng

doi:10.3390/agronomy8050066

Cited by 44 publications

(27 citation statements)

References 45 publications

(32 reference statements)

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“…Xiong et al therefore investigated the influence of drought stress and nitrogen supply on the growth of pak choi. Drought was simulated by adding polyethylene glycol under hydroponic culture conditions, resulting in a significant decline in plant water content, transpiration rate, shoot biomass, and shoot nitrogen concentration [18]. Their results further indicated that pak choi supplied with higher nitrogen concentration showed a significant better growth performance under drought stress compared to the controls.…”

Section: Abiotic Stress Responses and The Usage Of Rna-seq Methodologymentioning

confidence: 98%

Biotic and Abiotic Stress Responses in Crop Plants

2018

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Agricultural productivity depends on increasingly extreme weather phenomena, and the use of germplasm that has to be continuously improved by plant breeders to become tolerant to various biotic and abiotic stresses. Molecular plant biologists try to understand the mechanisms associated with stress responses and provide knowledge that could be used in breeding programs. To provide a partial overview about our current understanding about molecular and physiological stress responses, and how this knowledge can be used in agriculture, we have edited a special issue on “Biotic and Abiotic Stress Responses in Crop Plants”. Contributions are from different fields including heat stress responses, stress responses during drought and salinity, as well as during flooding, and resistance and susceptibility to pathogenetic stresses and about the role of plant functional metabolites in biotic stress responses. Future research demand in particular areas of crop stress physiology is discussed, as well as the importance of translational research and investigations directly in elite crop plants and in the genetic resources available for breeding.

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Section: Abiotic Stress Responses and The Usage Of Rna-seq Methodologymentioning

confidence: 98%

Biotic and Abiotic Stress Responses in Crop Plants

2018

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“…Nitrogen is one of the most important and limiting factors for plant growth and productivity . Nitrogen fertilization significantly increased food, feed, and fiber production and thus reduced the pressure of global population growth .…”

Section: Nitrate‐n and Potential For Improving Nuementioning

confidence: 99%

Untangling the molecular mechanisms and functions of nitrate to improve nitrogen use efficiency

et al. 2019

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A huge amount of nitrogenous fertilizer is used to increase crop production. This leads to an increase in the cost of production, and to human and environmental problems. It is therefore necessary to improve nitrogen use efficiency (NUE) and to design agronomic, biotechnological and breeding strategies for better fertilizer use. Nitrogen use efficiency relies primarily on how plants extract, uptake, transport, assimilate, and remobilize nitrogen. Many plants use nitrate as a preferred nitrogen source. It acts as a signaling molecule in the various important physiological processes required for growth and development. As nitrate is the main source of nitrogen in the soil, root nitrate transporters are important subjects for study. The latest reports have also discussed how nitrate transporter and assimilation genes can be used as molecular tools to improve NUE in crops. The purpose of this review is to describe the mechanisms and functions of nitrate as a specific factor that can be addressed to increase NUE. Improving factors such as nitrate uptake, transport, assimilation, and remobilization through activation by signaling, sensing, and regulatory processes will improve plant growth and NUE.

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“…Like water, nitrogen is very important for plant growth and productivity [17]. Generally, drought stress affects nitrogen uptake and transport to the aboveground plant parts because it decreases the transpiration rate and membrane permeability.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, drought stress affects nitrogen uptake and transport to the aboveground plant parts because it decreases the transpiration rate and membrane permeability. Another reason for the poor transport and metabolism of nitrogen is that both nitrate and ammonium need water for uptake and translocation to the aboveground plant parts for metabolism [17]. The regulation of nitrogen metabolism is very important for plant stress tolerance as most plant physiological processes are associated with it [18].…”

Section: Introductionmentioning

confidence: 99%

High Nitrogen Enhance Drought Tolerance in Cotton through Antioxidant Enzymatic Activities, Nitrogen Metabolism and Osmotic Adjustment

Iqbal

Dong

Wang

et al. 2020

Plants

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Drought is one of the most important abiotic stresses and hampers many plant physiological processes under suboptimal nitrogen (N) concentration. Seedling tolerance to drought stress is very important for optimum growth and development, however, the enhancement of plant stress tolerance through N application in cotton is not fully understood. Therefore, this study investigates the role of high N concentration in enhancing drought stress tolerance in cotton. A hydroponic experiment supplying low (0.25 mM) and high (5 mM) N concentrations, followed by 150 g L−1 polyethylene glycol (PEG)-induced stress was conducted in a growth chamber. PEG-induced drought stress inhibited seedling growth, led to oxidative stress from excessive malondialdehyde (MDA) generation, and reduced N metabolism. High N concentrations alleviated oxidative damage and stomatal limitation by increasing antioxidant enzymatic activities, leaf relative water content, and photosynthesis in cotton seedlings under drought stress. The results revealed that the ameliorative effects of high N concentration may be ascribed to the enhancement of N metabolizing enzymes and an increase in the amounts of osmoprotectants like free amino acids and total soluble protein. The present data suggest that relatively high N concentrations may contribute to drought stress tolerance in cotton through N metabolism, antioxidant capacity, and osmotic adjustment.

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Alleviation of Drought Stress by Nitrogen Application in Brassica campestris ssp. Chinensis L.

Cited by 44 publications

References 45 publications

Biotic and Abiotic Stress Responses in Crop Plants

Biotic and Abiotic Stress Responses in Crop Plants

Untangling the molecular mechanisms and functions of nitrate to improve nitrogen use efficiency

High Nitrogen Enhance Drought Tolerance in Cotton through Antioxidant Enzymatic Activities, Nitrogen Metabolism and Osmotic Adjustment

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