Unraveling the nutritional and bioactive constituents in baby-leaf lettuce for challenging climate conditions

Collado‐González, Jacinta; Piñero, María Carmen; Otálora, Ginés; López‐Marín, Josefa; Amor, Francisco M. del

doi:10.1016/j.foodchem.2022.132506

Cited by 7 publications

(9 citation statements)

References 38 publications

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“…In the same way, consumers require not only a high-quality product but also seek out health benefits. Hence the demand for fresh products like leafy salads with a high concentration of antioxidant compounds is growing (Collado-González et al, 2022). About 35% of consumers are even willing to pay a premium for food that offers benefits beyond basic, inherently healthy nutrition (Sloan, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, there is a paucity of information about antioxidant compounds in different cultivars. Moreover, a slight environmental change can generate a significant variation in antioxidant compound concentration in vegetables like lettuce (Collado-González et al, 2022). Shabala et al (2015) mentioned that salinity is the greatest environmental factor that restricts plant growth.…”

Section: Introductionmentioning

confidence: 99%

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Effect of NaCl and harvest time on antioxidant compounds and morphological cell changes in Lollo Bionda and Lollo Rosso lettuces

Flores

Amorós²,

Escalona

2022

Chil. j. agric. res.

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It is known that lettuce (Lactuca sativa L. var. crispa L.) phenological stage and environmental changes can cause changes in the plant cell morphology and an important variation in secondary plant metabolites. Antioxidant compounds are beneficial to health and salinity can increase them. The aim of this study was to determine the effect of salt concentration (NaCl 0.05 and 0.1 mol L -1 ) and harvest time (days 10, 20 and 30) on mass, color parameters, antioxidant compounds and proline concentration as well as the morphological tissue changes on two lettuce cultivars: Lollo Bionda 'Levistro' (green leaves) and Lollo Rosso 'Carmoli' (red leaves). NaCl treatments and time of harvest affected fresh matter (FM), DM and DM%, total phenol content, concentration of anthocyanin and antioxidant capacity of both cultivars. High NaCl concentrations decreased FM (from 16.8 to 8.7 g in 'Levistro' in 3 rd harvest) and the intracellular space of the leaf tissue but increased the concentration of proline (from 19.6 to 292.2 μg 100 g -1 FM in 'Levistro') and antioxidant compounds (from 412.9 to 487.3 mg Trolox eq. 100 g -1 FM in 'Levistro'). In addition, concentrations of antioxidant compounds (from 458.2 to 506.4 mg Trolox eq. 100 g -1 FM in 'Levistro') and cell density were significantly higher in late than early harvested plants. Thus, successive harvesting may lead to higher antioxidant capacities of lettuces leaves. A moderate decline in FM, a higher cell density and proline concentrations may indicate the better adaptability to salinity stress of red 'Carmoli' than the green 'Levistro' lettuces.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of NaCl and harvest time on antioxidant compounds and morphological cell changes in Lollo Bionda and Lollo Rosso lettuces

Flores

Amorós²,

Escalona

2022

Chil. j. agric. res.

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“…Other studies support the hypothesis that a lower absorption of Mg gives rise to a greater activity of chlorophyllase, damaging the chloroplast apparatus and increasing the generation of ROS [ 52 ]. Additionally, in one study with lettuce, it was observed that plants stressed by high temperatures showed a lower absorption of Mg [ 53 ]. But it is worth mentioning that the decreased chlorophyll content in stressed plants may also be due to a deterioration in the biosynthesis of 5-aminolevulinic acid [ 8 ].…”

Section: Resultsmentioning

confidence: 99%

Assessing optimal nitrate/ ammonium- ratios in baby-leaf lettuce to enhance the heat stress tolerance under elevated CO2 conditions

Collado‐González¹,

Piñero²,

Otálora³

et al. 2022

PLoS ONE

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In recent years, the interest on baby-leaf lettuce has grown steadily, because it is richer in bioactive compounds than other traditional vegetables. However, the quality of lettuce is being increasingly affected by climate change. It is very rare for a climatic effect to occur in isolation. Even then, a large body of work has only focused on the effect of isolated heat stress, fertilization, and elevated CO2, on morphological, physiological and biochemical parameters. Thus, very few works have focused on how the combination of several of these factors can affect these parameters. For first time, the present work studied the combined effect derived from the application of two different levels of CO2 (400 and 1000 ppm of CO2), four different NO3-/ NH4+ ratios (100/0 (T-I), 100/0 before the short-term heat stress and finally without NO3- (T-II), 80/20 (T-III) and 50/50 (T-IV)), and a short-term heat stress (25 and 43°C), on some physiological and quality parameters (dry biomass, photosynthetic parameters, pigments content, lipid peroxidation and total soluble proteins content) of baby-leaf lettuce cv Derbi. Additionally, a comparison of that combined effect of all these parameters between inner and outer leaves was also performed. The results obtained indicated that the interaction between the nutrient solution containing a 50/50 NO3-/ NH4+ ratio and a high concentration of CO2 (1000 ppm) improved the biomass, photosynthesis, intercellular/external CO2 concentration ratio (ci/ca), stomatal conductance (gs), evapotranspiration (E) and lipid peroxidation, and protein content in this baby-leaf lettuce. The results obtained in this work lead us to conclude that this existing interaction between the NO3-/ NH4+ ratio and the elevated CO2 concentration may be considered as a new strategy for making baby-leaf lettuce more resistant to heat stress, in other words, stronger against the ever more frequent heat waves.

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“…Potential climate change and plant bioactive compounds were discussed in a survey, which included some published studies (e.g. [163,164]). The production of plant secondary metabolites (as bioactives) may also depend on climate change, which represents both high temperatures and elevated CO 2 [165].…”

Section: Plant Nutrition Under Climate Changementioning

confidence: 99%

Plant Nutrition for Human Health: A Pictorial Review on Plant Bioactive Compounds for Sustainable Agriculture

et al. 2022

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Is there any relationship between plant nutrition and human health? The overall response to this question is very positive, and a strong relationship between the nutrition of plants and humans has been reported in the literature. The nutritional status of edible plants consumed by humans can have a negative or positive impact on human health. This review was designed to assess the importance of plant bioactive compounds for human health under the umbrella of sustainable agriculture. With respect to the first research question, it was found that plant bioactives (e.g., alkaloids, carotenoids, flavonoids, phenolics, and terpenoids) have a crucial role in human health due to their therapeutic benefits, and their potentiality depends on several factors, including botanical, environmental, and clinical attributes. Plant bioactives could be produced using plant tissue culture tools (as a kind of agro-biotechnological method), especially in cases of underexploited or endangered plants. Bioactive production of plants depends on many factors, especially climate change (heat stress, drought, UV radiation, ozone, and elevated CO2), environmental pollution, and problematic soils (degraded, saline/alkaline, waterlogged, etc.). Under the previously mentioned stresses, in reviewing the literature, a positive or negative association was found depending on the kinds of stress or bioactives and their attributes. The observed correlation between plant bioactives and stress (or growth factors) might explain the importance of these bioactives for human health. Their accumulation in stressed plants can increase their tolerance to stress and their therapeutic roles. The results of this study are in keeping with previous observational studies, which confirmed that the human nutrition might start from edible plants and their bioactive contents, which are consumed by humans. This review is the first report that analyzes this previously observed relationship using pictorial presentation.

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Unraveling the nutritional and bioactive constituents in baby-leaf lettuce for challenging climate conditions

Cited by 7 publications

References 38 publications

Effect of NaCl and harvest time on antioxidant compounds and morphological cell changes in Lollo Bionda and Lollo Rosso lettuces

Effect of NaCl and harvest time on antioxidant compounds and morphological cell changes in Lollo Bionda and Lollo Rosso lettuces

Assessing optimal nitrate/ ammonium- ratios in baby-leaf lettuce to enhance the heat stress tolerance under elevated CO2 conditions

Plant Nutrition for Human Health: A Pictorial Review on Plant Bioactive Compounds for Sustainable Agriculture

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