Plant adaptation to nutrient stress

Pandey, Renu; Vengavasi, Krishnapriya; Hawkesford, Malcolm J.

doi:10.1007/s40502-021-00636-7

Cited by 32 publications

(13 citation statements)

References 19 publications

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“…During plant growth period, the EC level in the NS is influenced by plants because they absorb both nutrients and water from the NS [2]. The rise and fall of EC level, especially when it exceeds the tolerance of the plants, can cause nutrient stresses (excess or deficiency) that inhibit plant growth and development [9,12]. Controlling the EC of NS within an appropriate range is critical for plant production in PFALs.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Yield, Total Phenolic Content, and Antioxidant Capacity of Basil by Controlling the Electrical Conductivity of the Nutrient Solution

Ren

et al. 2022

Horticulturae

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Hydroponic cultivation using nutrient solution (NS) is the main cultivation method employed by plant factories with artificial lighting (PFALs). The electrical conductivity (EC) of NSs influences the yield and quality of vegetables. The purpose of this study was to optimize the yield and antioxidant accumulation of basil in a PFAL by EC management. In experiment 1, basil plants were grown under four different ECs (0.5, 1.0, 3.0, and 5.0 dS m−1) after transplanting. At 18 days after treatment, the highest levels of shoot fresh and dry weights, leaf fresh and dry weights, and leaf area were observed at an EC of 3.0 dS m−1. However, low-EC treatments (0.5 and 1.0 dS m−1) generated total phenolic content (TPC) and antioxidant capacities that were higher than those of other EC treatments (3.0 and 5.0 dS m−1). In experiment 2, basil plants were grown at an EC of 3.0 dS m−1 for 13 or 15 days, then treated with water or NS with low ECs (0.5 and 1.0 dS m−1) for 5 or 3 days before harvest. The short-term low-EC treatments, especially, water for 3 days and 0.5 dS m−1 for 5 days, significantly increased the TPC and antioxidant capacity of leaves without significantly decreasing the yields of basil, compared with the control. In conclusion, yield of basil was optimized with an EC of 3.0 dS m−1; however, the TPC and antioxidant capacity of basil were significantly increased by low ECs of 0.5 and 1.0 dS m−1. Short-term low-EC treatments (0.5 dS m−1 for 5 days or water for 3 days) could be used to promote the TPC and antioxidant capacity in leaves without sacrificing yield of basil significantly.

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Section: Introductionmentioning

confidence: 99%

Optimization of the Yield, Total Phenolic Content, and Antioxidant Capacity of Basil by Controlling the Electrical Conductivity of the Nutrient Solution

Ren

et al. 2022

Horticulturae

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“…Plant growth and development are largely determined by 17 macro/micro-nutrients (Pandey et al, 2021). Nitrogen (N) and phosphorus (P) are two macro-nutrients involved in many different biological processes and often limiting plant performance (Jiang et al, 2007; Nacry et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and phosphorus deficiencies alter primary and secondary metabolites of soybean roots

Nezamivand-Chegini

Metzger

Moghadam

et al. 2022

Preprint

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Nitrogen (N) and phosphorus (P) are two essential plant macronutrients that can limit plant growth by different mechanisms. We aimed to shed light on how soybean respond to low nitrogen (LN), low phosphorus (LP) and their combined deficiency (LNP). Generally, these conditions triggered changes in gene expression of the same processes, including cell wall organization, defense response, response to oxidative stress, and photosynthesis, however, response was different in each condition. A typical primary response to LN and LP was detected also in soybean, i.e., the enhanced uptake of N and P, respectively, by upregulation of genes for the corresponding transporters. The regulation of genes involved in cell wall organization showed that in LP roots tended to produce more casparian strip, in LN more secondary wall biosynthesis occurred, and in LNP reduction in expression of genes involved in secondary wall production accompanied by cell wall loosening was observed. Flavonoid biosynthesis also showed distinct pattern of regulation in different conditions: more anthocyanin production in LP, and more isoflavonoid production in LN and LNP, which we confirmed also on the metabolite level. Interestingly, in soybean the nutrient deficiencies reduced defense response by lowering expression of genes involved in defense response, suggesting a role of N and P nutrition in plant disease resistance. In conclusion, we provide detailed information on how LN, LP, and LNP affect different processes in soybean roots on the molecular and physiological levels.

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“…Most of the soils used for agricultural practices worldwide contain limited levels of nutrients or lower nutrient availability for plants (Lynch and St. Clair, 2004). Nutrient uptake and assimilation affects various important processes related with yield such as biomass accumulation, carbon-nitrogen partition, seed and fruit development and seed quality (Pandey et al, 2021). Climate change is having an impact in soil fertility and plant nutrient acquisition and availability, increasing the constraints of crop productivity (St. Clair and Lynch, 2010).…”

Section: Heat and Nutrient Deficienciesmentioning

confidence: 99%

Effects of Combined Abiotic Stresses Related to Climate Change on Root Growth in Crops

2022

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Climate change is a major threat to crop productivity that negatively affects food security worldwide. Increase in global temperatures are usually accompanied by drought, flooding and changes in soil nutrients composition that dramatically reduced crop yields. Against the backdrop of climate change, human population increase and subsequent rise in food demand, finding new solutions for crop adaptation to environmental stresses is essential. The effects of single abiotic stress on crops have been widely studied, but in the field abiotic stresses tend to occur in combination rather than individually. Physiological, metabolic and molecular responses of crops to combined abiotic stresses seem to be significantly different to individual stresses. Although in recent years an increasing number of studies have addressed the effects of abiotic stress combinations, the information related to the root system response is still scarce. Roots are the underground organs that directly contact with the soil and sense many of these abiotic stresses. Understanding the effects of abiotic stress combinations in the root system would help to find new breeding tools to develop more resilient crops. This review will summarize the current knowledge regarding the effects of combined abiotic stress in the root system in crops. First, we will provide a general overview of root responses to particular abiotic stresses. Then, we will describe how these root responses are integrated when crops are challenged to the combination of different abiotic stress. We will focus on the main changes on root system architecture (RSA) and physiology influencing crop productivity and yield and convey the latest information on the key molecular, hormonal and genetic regulatory pathways underlying root responses to these combinatorial stresses. Finally, we will discuss possible directions for future research and the main challenges needed to be tackled to translate this knowledge into useful tools to enhance crop tolerance.

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Plant adaptation to nutrient stress

Cited by 32 publications

References 19 publications

Optimization of the Yield, Total Phenolic Content, and Antioxidant Capacity of Basil by Controlling the Electrical Conductivity of the Nutrient Solution

Optimization of the Yield, Total Phenolic Content, and Antioxidant Capacity of Basil by Controlling the Electrical Conductivity of the Nutrient Solution

Nitrogen and phosphorus deficiencies alter primary and secondary metabolites of soybean roots

Effects of Combined Abiotic Stresses Related to Climate Change on Root Growth in Crops

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