Plant Sensors Untangle the Water-Use and Growth Effects of Selected Seaweed-Derived Biostimulants on Drought-Stressed Tomato Plants (Solanum lycopersicum)

Top, Seppe; Vandoorne, Bertrand; Pauwels, Els; Perneel, Maaike; Labeke, Marie-Christine Van; Steppe, Kathy

doi:10.1007/s00344-023-10941-0

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…For this crop, A. nodosum showed no beneficial effect compared with the stressed control. However, another tested Ascophyllum nodosum extract (Asco-N2) reduced stem shrinkage in drought-treated tomato plants, similar to A. nodosum in Hydrangea, and resulted in a similar performance and water uptake as untreated, well-watered control tomato plants [63]. These results might indicate that A. nodosum-derived biostimulants can mitigate drought stress to some extent.…”

Section: Effects Of Biostimulants On Hydrangea Grown Under Deficit Ir...mentioning

confidence: 82%

“…Previsan S, on the other hand, increased the shrinkage compared with the stressed control (DS control). Top et al (2023) tested similar seaweed-based products on tomato (Solanum lycopersicum) plants under deficit irrigation. For this crop, A. nodosum showed no beneficial effect compared with the stressed control.…”

Section: Effects Of Biostimulants On Hydrangea Grown Under Deficit Ir...mentioning

confidence: 99%

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Effect of Seaweed-Based Biostimulants on Growth and Development of Hydrangea paniculata under Continuous or Periodic Drought Stress

Clercq

Pauwels²,

Top

et al. 2023

Horticulturae

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To adapt to climate change and water scarcity during dry, hot summers, more sustainable, or even deficit, irrigation is required in the ornamental sector, as it uses large amounts of water to sustain high-value crop production. Biostimulants, especially seaweed extracts, could offer a sustainable solution against drought stress as they are known to increase plant tolerance to abiotic stress. The effect of four seaweed extracts based on Ascophyllum nodosum, Soliera chordalis, Ecklonia maxima, and Saccharina latissima and one microbial biostimulant were tested on container-grown Hydrangea paniculata under drought stress conditions for two years. During the first trial year, in 2019, overall irrigation was reduced by 20%. In 2021, plants were subjected to repeated drying and wetting cycles. In general, less irrigation, and thus a lower substrate moisture content, reduced stomatal conductance, biomass production, and root development, but increased plant compactness. The biostimulants showed minor effects, but these were not observed in both experiments. Treatment with the A. nodosum extract resulted in longer branches and more biomass under deficit irrigation but tended to accelerate flowering when repeated drying and wetting cycles were applied. The E. maxima extract negatively affected the branching of Hydrangea under repeated drying and wetting cycles.

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Section: Effects Of Biostimulants On Hydrangea Grown Under Deficit Ir...mentioning

confidence: 82%

Section: Effects Of Biostimulants On Hydrangea Grown Under Deficit Ir...mentioning

confidence: 99%

Effect of Seaweed-Based Biostimulants on Growth and Development of Hydrangea paniculata under Continuous or Periodic Drought Stress

Clercq

Pauwels²,

Top

et al. 2023

Horticulturae

Self Cite

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“…Although no clear differences were found in the determined primary growth parameters (stem length, number of leaves, number of flowers, and leaf area), all biostimulants exerted significant protection against drought-induced dehydration in the roots (except HA) and leaves, with the strongest effect observed for TB. Similarly, Top et al [65] found that using a biostimulant derived from seaweed (Ascophyllum nodosum and Saccharina latissimi) extracts enabled plants to maintain water uptake levels during drought, similar to well-watered controls. Several studies have reported beneficial effects on tomato plants' growth after applying biostimulants similar to those used here under different stress conditions, including water shortage [66][67][68] or nutritional stress [69], and also in non-stressed plants [70][71][72].…”

Section: Discussionmentioning

confidence: 96%

Antioxidant Responses of Water-Stressed Cherry Tomato Plants to Natural Biostimulants

Gil-Ortiz,

Naranjo,

Atares

et al. 2023

Agronomy

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Biostimulants’ application to plants can reduce the damage caused by abiotic factors such as drought or salinity and improve crop yield under these stressful conditions. In this work, several biostimulants, namely Terrabion Aminovit® (a commercial product based on amino acids), potassium fulvate, humic acids, and a seaweed extract, were applied to cherry tomato plants using fertigation at two doses of 0.2 and 1.0 g L−1. The plants were then subjected to a water stress treatment by completely withholding irrigation for 12 days. After the treatments, all plants were harvested to determine several growth and biochemical parameters. Pre-treatment with all biostimulants protected the tomato plants against dehydration, as indicated by a significant increase in leaf water content compared to the non-irrigated controls. Leaf fresh weight and root water content also increased, except in the plants treated with humic acids, by about 2 fold in plants pre-treated with Terrabion Aminovit® and 1.5 fold in the presence of potassium fulvate and the seaweed extract. The water stress treatment caused a significant increase in leaf proline content, up to 113.6 μmol g−1 DW, approximately 18 fold higher than in well-irrigated control plants; this value was significantly lower in Terrabion Aminovit® pre-treated plants but even higher, ca. 180 μmol g−1 DW, in those treated previously with the seaweed extract. These results indicate that proline is a suitable water stress biomarker in tomatoes and that the biostimulants probably differ in their mode of action, suggesting that the effect of the seaweed extract is mediated by proline accumulation. A significant activation of antioxidant enzymes, namely superoxide dismutase, ascorbate peroxidase, and glutathione reductase, was also observed in water-stressed plants; application of the biostimulants resulted in all cases, in a significant reduction in the specific activities of the three enzymes, indicating reduced levels of drought-induced oxidative stress in the plants. We conclude that applying these biostimulants, particularly Terrabion Aminovit®, may help minimise the adverse effects of water stress on tomatoes by maintaining turgor and improving growth through mechanisms still unknown but which appear to involve, at least in part, enhancing the plants’ antioxidant defence responses.

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“…Their beneficial effects on crops could be attributed to the adjustment of plant metabolic processes that are involved in stress responses [31], the improvement of nutrients and water use efficiency, and the increase of tolerance to biotic and abiotic stresses [26]. Particularly in tomato crops, biostimulant products based on seaweed extracts and protein hydrolysates have been associated with improvement in plant growth, yield, and quality of fruit under drought stress and deficit irrigation [18,[32][33][34][35][36]. Moreover, Wang et al [34] suggested that animal-derived biostimulants (pig blood-derived protein hydrolysate) may alleviate the negative effects of water stress through the regulation of photosynthetic processes and osmoregulation, as well as by triggering the antioxidant mechanisms of tomato plants.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Biostimulants on Fruit Quality of Processing Tomato Grown under Deficit Irrigation

Liava,

Chaski,

Añibarro-Ortega

et al. 2023

Horticulturae

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Water shortage can be a restrictive factor for the growth and quality of vegetable crops. Considering the alleviating effects of biostimulant application against water stress, this study aimed to investigate the effect of four biostimulant products (protein and amino acids with carboxylic acids (Tr1); protein and amino acids with seaweed extracts (Tr2); humic and fulvic acids with seaweed extracts (Tr3); SiO2 (Tr4); and control (no biostimulants added)) and two irrigation systems (regulated deficit irrigation (RDI)—65% of field capacity and regular irrigation (RI)—100% of field capacity) on quality parameters of processing tomato fruit. Regulated deficit irrigation and biostimulant application increased the energetic value, carbohydrates, and free sugars content, while organic acids showed a variable response to biostimulant use. In terms of tocopherols (α-, β-, γ-, δ-) and carotenoids (lycopene and β-carotene), regular irrigation and biostimulant application negatively affected their content, while Tr3 treatment had a beneficial impact on these lipophilic compounds under RDI conditions. The main fatty acids were palmitic (C16:0) and linoleic (C18:2n6) acids, which increased when plants were treated with Tr3 and Tr1 biostimulants under a deficit regime. Antioxidant activity (assessed by TBARS and OxHLIA assays) and total phenolic and flavonoids content also showed a variable response to the studied factors. In particular, the application of Tr3 and the control treatment under RDI increased the total phenolic content, while the control and Tr3 treatments under the same irrigation regime recorded the highest antioxidant activity. In conclusion, our results indicate that the adoption of eco-friendly strategies such as regulated deficit irrigation and biostimulant application can beneficially affect the quality traits of processing tomatoes.

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Plant Sensors Untangle the Water-Use and Growth Effects of Selected Seaweed-Derived Biostimulants on Drought-Stressed Tomato Plants (Solanum lycopersicum)

Cited by 7 publications

References 38 publications

Effect of Seaweed-Based Biostimulants on Growth and Development of Hydrangea paniculata under Continuous or Periodic Drought Stress

Effect of Seaweed-Based Biostimulants on Growth and Development of Hydrangea paniculata under Continuous or Periodic Drought Stress

Antioxidant Responses of Water-Stressed Cherry Tomato Plants to Natural Biostimulants

The Effect of Biostimulants on Fruit Quality of Processing Tomato Grown under Deficit Irrigation

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