Plant Physiological Responses to Nutrient Solution

Báron, Daniel; Amaro, Amanda Cristina Esteves; Campos, Felipe Girotto; Boaro, Carmen Sílvia Fernandes; Ferreira, Gisela

doi:10.1016/b978-0-12-812689-9.00024-8

Cited by 7 publications

(6 citation statements)

References 107 publications

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“…The NS in hydroponics is a manageable and flexible experimental factor useful to understand and modulate a plant’s response to nutrient availability beyond mineral withholding, such as by varying the strength and the ion ratio of the NS [ 18 ]. Investigations aiming at elucidating the effects of global NS alterations have also a practical impact [ 19 ], considering that hydroponics is increasingly used in the commercial production of several crops (i.e., tomatoes, strawberries, cucumbers, peppers, eggplants, lettuce) [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

The Strength of the Nutrient Solution Modulates the Functional Profile of Hydroponically Grown Lettuce in a Genotype-Dependent Manner

Senizza

Zhang

Miras-Moreno

et al. 2020

Foods

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Considering that functional components of plant foods are mainly secondary-metabolism products, we investigated the shaping of health-promoting compounds in hydroponically grown butterhead lettuce (Lactuca sativa L. var. capitata) as a function of the strength of the nutrient solution utilized. To this aim, untargeted metabolomics profiling, in vitro antioxidant capacity (total phenolics, 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), cupric reducing antioxidant capacity (CUPRAC), and ferric reducing antioxidant power (FRAP) assays), and the inhibition of selected enzyme activities were investigated in two butterhead lettuce cultivars with different pigmentation, i.e., green and red Salanova. Full-strength nutrition, together with half- and quarter-strength solutions of macronutrients, was tested. Our results indicate that by reducing the nutrients strength, we could elicit a distinctive shaping of the phenolic profile of lettuce. It is noteworthy that only specific classes of phenolics (namely, lignans and phenolic acids, followed by flavones and anthocyanins) were modulated by the induction of nutritional eustress (fold-change values in the range between −5 and +11). This indicates that specific responses, rather than a generalized induction of phenolic compounds, could be observed. Nonetheless, a genotype-dependent response could be observed, with the red cultivar being much more responsive to nutritional deprivation than the green Salanova lettuce. Indeed, analysis of variance (ANOVA) confirmed a genotype x nutrition interaction in red Salanova (p < 0.001). As a consequence of the changes in phenolic composition, also the antioxidant capacity (p < 0.001) and amylase inhibition (p < 0.001) properties were affected by the growing conditions. However, the effect on cholinesterase and tyrosinase inhibition was poorly affected by the nutritional strength. Provided that yields are not compromised, the application of a controlled nutritional eustress in hydroponically cultivated lettuce may represent a valuable strategy to produce food with tailored functional features in a sustainable manner.

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Section: Introductionmentioning

confidence: 99%

The Strength of the Nutrient Solution Modulates the Functional Profile of Hydroponically Grown Lettuce in a Genotype-Dependent Manner

Senizza

Zhang

Miras-Moreno

et al. 2020

Foods

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“…In recent years, the modulation of the mineral nutrient solutions in soilless cultivation has been increasingly applied as a tool to study the various adaptive mechanisms to nutrient availability in higher plants [ 7 ]. Moreover, these studies also gained popularity in addressing environmental issues (e.g., soil and groundwater contamination) [ 7 ]. A wealth of knowledge has been gained especially in relation to the availability of essential minerals (e.g., nutrient limitation) or toxic elements (e.g., excessive amounts).…”

Section: Introductionmentioning

confidence: 99%

Understanding the Morpho-Anatomical, Physiological, and Functional Response of Sweet Basil to Isosmotic Nitrate to Chloride Ratios

Corrado

Formisano

Micco

et al. 2020

Biology

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Sweet basil (Ocimum basilicum L.) is a leafy green with a short-production cycle that is emerging as a model species among aromatic plants. Modulating the mineral composition of the nutrient solution has proved to be a valuable tool to uncover the mechanisms and responses that higher plants adopt in relation to the availability of mineral nutrients. The aim of this work was to examine the effects on basil of four isosmotic nutrient solutions with different nitrate to chloride ratios. These two anions share uptake and transport mechanisms in plants and are often considered antagonist. To this goal, we analyzed morpho-anatomical and physiological parameters as well as quality-related traits, such as the antioxidant capacity, the leaf color, the mineral composition, and the aromatic profile in relation to the nutrient ratios. Moreover, using a full factorial design, we analyzed leaves in two consecutive harvests. The data indicated a broad, multifaceted plant response to the different nutritional ratios, with almost all the recorded parameters involved. Overall, the effects on basil can be explained by considering an interdependent combination of the nitrate and chloride roles in plant nutrition and physiology. Our work revealed the extent of the modification that can be achieved in basil through the modification of the nutrient solution. It also provided indications for more nutrient efficient growing conditions, because a moderate increase in chloride limits the expected negative impact of a sub-optimal nitrate fertilization.

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“…Through the determination of leaf area, shoot dry matter mass and total dry matter mass, physiological indexes were calculated among 22 and 124 DAS, such as leaf area ratio (LAR, dm -2 dia -1 ), specific leaf area (SLA, dm -2 dia -1 ), net assimilation rate (NAR, g dm -2 dia -1 ), leaf weight ratio (LWR, g/g) and relative growth rate (RGR, g g -1 dia -1 ) (Baron et al, 2018).…”

Section: Physiological Indexes Measurementsmentioning

confidence: 99%

Is silicon capable to affect the photosynthetic performance of green maize plants?

Santos¹,

Souza²,

Cruz³

et al. 2019

Afr. J. Agric. Res.

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Green maize (Zea mays L.) is a cultivated species of significant importance in the agricultural scene. The literature reports that Si has been used as an alternative option for sustainable agricultural systems. We examined the hypothesis that this beneficial element will improve the photosynthetic performance and biological productivity of crop plants, under field conditions, without nutritional stress. In this context, leaf gas exchanges, physiological indexes, and growth parameters were investigated in green maize, AG4051 and CATIVERDE 02, under Si availabilities at the initial stage of vegetative development. The treatments were: Via shoot; 0, 130, 260, 390 and 520 g ha -1 ; and via roots; 0, 100, 500, 1000 and 2000 kg ha -1 . The experimental design was randomized blocks (RB) with 5 blocks (experimental plots). The beneficial mineral element Si did not have an improvement on gas exchanges of green maize plants and, consequently, plant development. In conclusion, we reject our initial hypothesis and we accepted the alternative hypothesis, that the beneficial element Si did not optimize the photosynthetic performance and biological productivity of green maize plants, without nutritional stress.

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Plant Physiological Responses to Nutrient Solution

Cited by 7 publications

References 107 publications

The Strength of the Nutrient Solution Modulates the Functional Profile of Hydroponically Grown Lettuce in a Genotype-Dependent Manner

The Strength of the Nutrient Solution Modulates the Functional Profile of Hydroponically Grown Lettuce in a Genotype-Dependent Manner

Understanding the Morpho-Anatomical, Physiological, and Functional Response of Sweet Basil to Isosmotic Nitrate to Chloride Ratios

Is silicon capable to affect the photosynthetic performance of green maize plants?

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